feat: the extension picks a Discord source's posters from who posts in the channel, stored by id (#4488)

On a Discord channel page the Add panel lists who posted in the newest 200
messages, the creator the server is named for (or owned by) ticked. On a
channel FabledCurator already follows, the chip opens the same list with Save
and Open artist. The list is kept as user ids, so a rename never quietly stops
it matching; the name each was picked under rides beside it for display, and
the Subscriptions dialog shows it.

- DiscordClient.recent_posters + rank_posters (owner / name-matches-server;
  bots never suggested; it suggests, the operator ticks).
- GET/POST /api/extension/discord/posters; quick-add takes discord_authors.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.forgejo/workflows/build.yml

@@ -142,6 +142,16 @@ concurrency:
 # Deriving it per job invites the two halves to disagree: sign-extension would
 # derive dev's extension version while build-web bundled main's, and the
 # release download would 404 on a version that exists perfectly well.
+#
+# On every other trigger it is the COMMIT that fired (`github.sha`), never the
+# branch name. A branch is re-resolved by each job's checkout when that job
+# starts, so a push landing mid-run moved the later jobs onto the new tip: run
+# 7499 signed 423275a's extension, then build-web checked out 83e1382 (pushed
+# while 7499 ran), derived a version nobody had signed, and 404'd on the
+# download (#4427). The guard failed closed that time; a job without one would
+# have published a commit the run's own lanes never tested — the lanes check
+# out `github.sha` by default, so pinning here makes the publish build exactly
+# what they passed.
 # IS THIS A BASE REFRESH? Asked in five places and previously spelled five
 # ways — `github.event_name == 'schedule'` in an `if:`, `$GITHUB_EVENT_NAME` in
 # one shell, an `EVENT:` env passed into another, and a bare expression on
@@ -178,7 +188,16 @@ concurrency:
 # where a step-level `if:` needs the answer before any shell runs.
 env:
   IS_REFRESH: ${{ (github.event_name == 'schedule' || format('{0}', github.event.inputs.refresh) == 'true') && 'true' || 'false' }}
-  BUILD_REF: ${{ (github.event_name == 'schedule' || format('{0}', github.event.inputs.refresh) == 'true') && 'main' || github.ref }}
+  BUILD_REF: ${{ (github.event_name == 'schedule' || format('{0}', github.event.inputs.refresh) == 'true') && 'main' || github.sha }}
+# What the six LANES check out. Empty — the checkout default, the triggering
+# commit (or a PR's merge ref) — on every trigger but the refresh, where it is
+# `main`: the refresh publishes main, so the gate has to test main (#4430). It
+# is not BUILD_REF itself because a pull_request run's `github.sha` is a merge
+# commit the default checkout reaches through its ref, not by sha. Each job
+# still resolves `main` when it starts, so a merge to main during the ~5 min of
+# a Sunday-06:00 refresh could put the lanes and the build one commit apart;
+# the build jobs' own guards assert the branch, not the commit.
+  LANE_REF: ${{ (github.event_name == 'schedule' || format('{0}', github.event.inputs.refresh) == 'true') && 'main' || '' }}
 
 # Requires repo secret RELEASE_TOKEN — a Forgejo PAT with scopes:
 #   - write:package, read:package  (for docker push to git.fabledsword.com)
@@ -219,6 +238,8 @@ jobs:
       image: git.fabledsword.com/bvandeusen/ci-python:3.14
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ env.LANE_REF }}
       - name: Ruff lint
         # agent/ included so the GPU-agent is linted before its image is built
         # (build.yml only `docker build`s it — this is where it gets checked).
@@ -265,6 +286,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
+          ref: ${{ env.LANE_REF }}
           # The derivation needs real history: a depth-1 clone sees one commit
           # and produces a wrong, too-low value RATHER THAN FAILING. Checking
           # that here is half the point of the lane.
@@ -320,6 +342,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
+          ref: ${{ env.LANE_REF }}
           # Full history for tests/test_artifact_identity.py, which derives
           # each artifact's revision to check the identity scheme. On a
           # depth-1 clone that derivation either fails or returns the tip sha
@@ -366,6 +389,8 @@ jobs:
         working-directory: frontend
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ env.LANE_REF }}
       # No package-lock.json is tracked yet (we don't run npm locally per
       # feedback-no-local-runs). Using `npm install` instead of `npm ci`.
       # If we want strict lockfile-based reproducibility later, commit a
@@ -395,6 +420,8 @@ jobs:
       image: node:24-bookworm-slim
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ env.LANE_REF }}
       # Not --no-save: vitest and web-ext are both real devDependencies now,
       # and the suite needs vitest resolvable from node_modules.
       - name: Install dev dependencies
@@ -497,6 +524,8 @@ jobs:
           --health-retries 10
     steps:
       - uses: actions/checkout@v4
+        with:
+          ref: ${{ env.LANE_REF }}
       - name: Integration suite (resolve service IPs, migrate, test)
         run: |
           set -eux
@@ -605,8 +634,8 @@ jobs:
       - uses: actions/checkout@v4
         with:
           # Not the triggering ref — see the `env:` block at the top. On a
-          # scheduled refresh this is `main`; on everything else it is the ref
-          # that fired, so this is a no-op on every ordinary path.
+          # scheduled refresh this is `main`; on everything else it is the
+          # commit that fired, the same one the lanes above tested.
           ref: ${{ env.BUILD_REF }}
           # Full history is load-bearing, not a convenience: the version this
           # job signs is derived from the commit TIME of the newest packaged
@@ -945,8 +974,8 @@ jobs:
       - uses: actions/checkout@v4
         with:
           # Not the triggering ref — see the `env:` block at the top. On a
-          # scheduled refresh this is `main`; on everything else it is the ref
-          # that fired, so this is a no-op on every ordinary path.
+          # scheduled refresh this is `main`; on everything else it is the
+          # commit that fired, the same one the lanes above tested.
           ref: ${{ env.BUILD_REF }}
           # Full history: this job RE-DERIVES the extension version rather than
           # being handed it, and a depth-1 clone derives a wrong, too-low value
@@ -2174,8 +2203,8 @@ jobs:
       - uses: actions/checkout@v4
         with:
           # Not the triggering ref — see the `env:` block at the top. On a
-          # scheduled refresh this is `main`; on everything else it is the ref
-          # that fired, so this is a no-op on every ordinary path.
+          # scheduled refresh this is `main`; on everything else it is the
+          # commit that fired, the same one the lanes above tested.
           ref: ${{ env.BUILD_REF }}
           # Full history: this job derives its artifact's version from the
           # commit its shipped files last changed in (milestone 313). A

README.md

@@ -22,7 +22,8 @@ through afterwards.
 - **ML tagging.** Runs image models in-container to suggest tags, group
   characters, find near-duplicates and power similarity search. Suggestions are
   reviewable — it proposes, you confirm, and it learns which proposals you keep
-  rejecting.
+  rejecting. It ships switched off: turn it on under Settings → System when
+  you want it, and it fetches its model weights then.
 - **Deduplication and provenance.** Everything that arrives is hashed and
   deduplicated by content, metadata sidecars are read wherever the source
   writes them, and every file keeps a record of where it came from.
@@ -119,9 +120,12 @@ needs every credential entered again by hand.
 
 A few other things are worth knowing about the first few minutes:
 
-- **The ML worker downloads its model weights on first boot**, several GB from
-  HuggingFace into `./models`. Until that finishes, tagging is queued rather
-  than broken. It is idempotent — a restart resumes rather than refetches.
+- **ML tagging starts switched off, and nothing is downloaded at boot.** Give
+  the ML lane a slot under **Settings → System** and it fetches its model
+  weights then — several GB from HuggingFace into `./models`, shown as a job
+  under **Settings → Activity** that you can watch and retry. Until it
+  finishes, tagging is queued rather than broken, and the fetch only takes
+  what is missing, so turning the lane off and on again does not refetch.
 - **The gallery starts empty**, and that is the expected state. Add a creator
   under **Subscriptions** and it fills as posts come down.
 - **If you already have a library on disk**, there is no screen that imports

alembic/versions/0112_retire_soft_wip_title.py

@@ -0,0 +1,78 @@
+"""Retire the sketch/doodle WIP title tier — its tags, its review flags, its toggle.
+
+Milestone 430, #4428. The soft tier (#1474) tagged `wip` on any post titled
+sketch / doodle / scribble. Measured on the operator's library it was 6,096 of
+8,876 wip tags, and its conflict audit filled the Gallery's review strip with
+2,086 cards, because most finished art scores >= 0.5 on some content head. A
+"sketch" is usually finished work, so the operator retired it (2026-09-25).
+
+Data:
+
+* A soft tag the operator stood behind is kept and relabelled `manual`: one they
+  confirmed (tag_positive_confirmation), or one whose review flag they resolved
+  while leaving the tag on (the strip's "Keep tag").
+* Every other `wip_title_soft` row is deleted.
+* Unresolved review flags whose tag is no longer on the image are deleted: the
+  question they ask no longer applies. That is the audit's cards, and any older
+  orphan the same way.
+
+Then `import_settings.wip_soft_title_tagging_enabled` is dropped. The downgrade
+restores the column only; deleted tags are not recreated.
+
+Revision ID: 0112
+Revises: 0111
+Create Date: 2026-09-25
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0112"
+down_revision = "0111"
+branch_labels = None
+depends_on = None
+
+
+def retire_soft_wip_tags(conn) -> None:
+    """The data half, on a plain connection, so a test can run it directly."""
+    conn.execute(sa.text("""
+        UPDATE image_tag it SET source = 'manual'
+        WHERE it.source = 'wip_title_soft'
+          AND (
+            EXISTS (
+              SELECT 1 FROM tag_positive_confirmation c
+              WHERE c.image_record_id = it.image_record_id AND c.tag_id = it.tag_id
+            )
+            OR EXISTS (
+              SELECT 1 FROM presentation_review pr
+              WHERE pr.image_record_id = it.image_record_id AND pr.tag_id = it.tag_id
+                AND pr.resolved_at IS NOT NULL
+            )
+          )
+    """))
+    conn.execute(sa.text("DELETE FROM image_tag WHERE source = 'wip_title_soft'"))
+    conn.execute(sa.text("""
+        DELETE FROM presentation_review pr
+        WHERE pr.resolved_at IS NULL
+          AND NOT EXISTS (
+            SELECT 1 FROM image_tag it
+            WHERE it.image_record_id = pr.image_record_id AND it.tag_id = pr.tag_id
+          )
+    """))
+
+
+def upgrade():
+    retire_soft_wip_tags(op.get_bind())
+    op.drop_column("import_settings", "wip_soft_title_tagging_enabled")
+
+
+def downgrade():
+    op.add_column(
+        "import_settings",
+        sa.Column(
+            "wip_soft_title_tagging_enabled",
+            sa.Boolean(),
+            nullable=False,
+            server_default=sa.text("false"),
+        ),
+    )

alembic/versions/0113_redate_native_images.py

@@ -0,0 +1,60 @@
+"""Re-date images whose post's date arrived after they were linked.
+
+#4431. The native ingesters import a post's media before its record, and the
+date travels in the record (`_post.json`). Every natively downloaded image was
+therefore linked to an undated post and kept its download time in both gallery
+date columns, while the post itself was dated correctly. The importer now
+re-dates a post's images when its record lands; this repairs the images that
+landed before that.
+
+Both columns get back the rules the importer keeps:
+
+* `effective_date` is the primary post's date (left alone when that post has
+  none, as the importer does);
+* `earliest_post_date` is the earliest dated post the image is linked to.
+
+Only rows that differ are written. The downgrade does nothing: the old values
+were download times that no one chose.
+
+Revision ID: 0113
+Revises: 0112
+Create Date: 2026-09-25
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0113"
+down_revision = "0112"
+branch_labels = None
+depends_on = None
+
+
+def redate_images(conn) -> None:
+    """The data step, on a plain connection, so a test can run it directly."""
+    conn.execute(sa.text("""
+        UPDATE image_record ir SET effective_date = p.post_date
+        FROM post p
+        WHERE p.id = ir.primary_post_id
+          AND p.post_date IS NOT NULL
+          AND ir.effective_date IS DISTINCT FROM p.post_date
+    """))
+    conn.execute(sa.text("""
+        UPDATE image_record ir SET earliest_post_date = m.earliest
+        FROM (
+          SELECT ip.image_record_id, MIN(p.post_date) AS earliest
+          FROM image_provenance ip JOIN post p ON p.id = ip.post_id
+          WHERE p.post_date IS NOT NULL
+          GROUP BY ip.image_record_id
+        ) m
+        WHERE m.image_record_id = ir.id
+          AND ir.earliest_post_date IS DISTINCT FROM m.earliest
+    """))
+
+
+def upgrade():
+    redate_images(op.get_bind())
+
+
+def downgrade():
+    pass

alembic/versions/0114_fold_misfiled_attachment_posts.py

@@ -0,0 +1,79 @@
+"""Fold the undated shell posts a misfiled attachment created into the real post.
+
+#4435. A non-image file (an archive, a pdf) downloaded for one of an artist's
+Discord channels was filed under the artist's FIRST Discord source: the
+attachment path looked the source up by (artist, platform), which takes the
+lowest id. That created an undated, url-less post there holding only the
+attachment, and the message's real post record then created the dated post
+under the right source. The importer now uses the source it was downloading
+for; this repairs the pairs it left.
+
+A shell is folded only when all of this holds:
+
+* it has no date and no url, and nothing synthesized it;
+* another post of the same artist, platform and external id HAS a date;
+* no image is linked to the shell (it held an attachment and nothing else).
+
+Its attachments move to the dated post, dropping any the dated post already
+has (same sha256, which the per-post unique forbids twice), and the shell is
+deleted. A shell with no dated twin is left alone: which channel it belongs to
+is not recorded anywhere but the file name. The downgrade does nothing.
+
+Revision ID: 0114
+Revises: 0113
+Create Date: 2026-09-25
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0114"
+down_revision = "0113"
+branch_labels = None
+depends_on = None
+
+_PAIRS = """
+    SELECT DISTINCT ON (shell.id) shell.id AS shell_id, real.id AS real_id
+    FROM post shell
+    JOIN source ss ON ss.id = shell.source_id
+    JOIN post real
+      ON real.artist_id = shell.artist_id
+     AND real.external_post_id = shell.external_post_id
+     AND real.id <> shell.id
+     AND real.post_date IS NOT NULL
+    JOIN source rs ON rs.id = real.source_id AND rs.platform = ss.platform
+    WHERE shell.post_date IS NULL
+      AND shell.post_url IS NULL
+      AND shell.synthesized_by IS NULL
+      AND NOT EXISTS (SELECT 1 FROM image_provenance ip WHERE ip.post_id = shell.id)
+    ORDER BY shell.id, real.id
+"""
+
+
+def fold_misfiled_attachment_posts(conn) -> int:
+    """The data step, on a plain connection, so a test can run it directly.
+    Returns how many shells were folded."""
+    pairs = conn.execute(sa.text(_PAIRS)).all()
+    for shell_id, real_id in pairs:
+        conn.execute(sa.text("""
+            DELETE FROM post_attachment pa
+            WHERE pa.post_id = :shell
+              AND EXISTS (
+                SELECT 1 FROM post_attachment keep
+                WHERE keep.post_id = :real AND keep.sha256 = pa.sha256
+              )
+        """), {"shell": shell_id, "real": real_id})
+        conn.execute(
+            sa.text("UPDATE post_attachment SET post_id = :real WHERE post_id = :shell"),
+            {"shell": shell_id, "real": real_id},
+        )
+        conn.execute(sa.text("DELETE FROM post WHERE id = :shell"), {"shell": shell_id})
+    return len(pairs)
+
+
+def upgrade() -> None:
+    fold_misfiled_attachment_posts(op.get_bind())
+
+
+def downgrade() -> None:
+    pass

alembic/versions/0115_source_display_name.py

@@ -0,0 +1,27 @@
+"""source.display_name — what a source is called on its platform.
+
+#4481. A Discord source's URL is a server id and a channel id, so the
+Subscriptions page could only show two numbers. The Discord ingester already
+loads the server and channel names to walk them; it now keeps them here,
+refreshed on every walk. NULL until a walk has read it.
+
+Revision ID: 0115
+Revises: 0114
+Create Date: 2026-09-28
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0115"
+down_revision = "0114"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.add_column("source", sa.Column("display_name", sa.Text(), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("source", "display_name")

alembic/versions/0116_single_color_threshold.py

@@ -0,0 +1,34 @@
+"""The single-color filter's default becomes near-total: 0.95 → 0.995.
+
+#4483. At 0.95 the filter rejected line art: a pencil doodle on white is
+mostly white, and five of Todding's Discord doodles were skipped on import as
+"single color", leaving their posts with text and no image. The predicate now
+samples real pixels instead of a blurred thumbnail, and the default only
+calls an image blank when it essentially is one.
+
+A stored 0.95 is the old default, so it moves with it. Any other value was
+chosen by hand and is left alone.
+
+Revision ID: 0116
+Revises: 0115
+Create Date: 2026-09-28
+
+"""
+from alembic import op
+
+revision = "0116"
+down_revision = "0115"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.alter_column("import_settings", "single_color_threshold", server_default="0.995")
+    op.execute(
+        "UPDATE import_settings SET single_color_threshold = 0.995 "
+        "WHERE single_color_threshold = 0.95"
+    )
+
+
+def downgrade() -> None:
+    op.alter_column("import_settings", "single_color_threshold", server_default="0.95")

backend/app/api/extension.py

@@ -19,8 +19,10 @@ from ..models import AppSetting
 from ..services.extension_service import (
     ExtensionService,
     InvalidUrlError,
+    PosterLookupError,
     UnknownArtistError,
     UnknownPlatformError,
+    UnknownSourceError,
 )
 from ..services.source_service import KNOWN_PLATFORMS
 from ._responses import error_response as _bad
@@ -121,6 +123,10 @@ async def quick_add_source():
     # Patreon is canon: adding a Patreon source to an existing artist can take
     # the creator's Patreon display name (name only; the slug never moves).
     use_platform_name = body.get("use_platform_name") is True
+    # #4488: a Discord add can carry the posters picked in the panel.
+    discord_authors = body.get("discord_authors")
+    if discord_authors is not None and not _valid_authors(discord_authors):
+        return _bad("invalid_body", detail="discord_authors must be a list of {id, name}")
 
     from .credentials import _get_crypto
 
@@ -133,6 +139,7 @@ async def quick_add_source():
             result = await ExtensionService(session, _get_crypto()).quick_add_source(
                 url, artist_id=artist_id, artist_name=artist_name,
                 use_platform_name=use_platform_name,
+                discord_authors=discord_authors,
             )
         except UnknownArtistError as exc:
             return _bad("not_found", detail=str(exc), status=404)
@@ -147,6 +154,59 @@ async def quick_add_source():
     return jsonify(result), (201 if result["created_source"] else 200)
 
 
+def _valid_authors(value) -> bool:
+    """[{id, name}]: the id is what the list keys on, the name only shows it."""
+    return isinstance(value, list) and all(
+        isinstance(a, dict) and isinstance(a.get("id"), str | int)
+        and not isinstance(a.get("id"), bool)
+        and (a.get("name") is None or isinstance(a.get("name"), str))
+        for a in value
+    )
+
+
+@extension_bp.route("/discord/posters", methods=["GET"])
+async def discord_posters():
+    """Who posts in the Discord channel `url` shows, lately, with the likely
+    creator marked (#4488). Reads the channel with the stored token; writes
+    nothing."""
+    url = (request.args.get("url") or "").strip()
+    if not url:
+        return _bad("invalid_body", detail="url query parameter is required")
+    from .credentials import _get_crypto
+
+    async with get_session() as session:
+        if not await _ext_key_required(session):
+            return _bad("unauthorized", status=401)
+        try:
+            result = await ExtensionService(session, _get_crypto()).discord_posters(url)
+        except (InvalidUrlError, UnknownPlatformError) as exc:
+            return _bad("invalid_url", detail=str(exc))
+        except PosterLookupError as exc:
+            return _bad("posters_unavailable", detail=str(exc), status=409)
+    return jsonify(result)
+
+
+@extension_bp.route("/discord/posters", methods=["POST"])
+async def set_discord_posters():
+    """Set the poster list of the source following `url`'s channel."""
+    body = await request.get_json(silent=True)
+    if not isinstance(body, dict) or not isinstance(body.get("url"), str):
+        return _bad("invalid_body", detail="url is required")
+    authors = body.get("authors")
+    if not _valid_authors(authors):
+        return _bad("invalid_body", detail="authors must be a list of {id, name}")
+    async with get_session() as session:
+        if not await _ext_key_required(session):
+            return _bad("unauthorized", status=401)
+        try:
+            result = await ExtensionService(session).set_discord_posters(body["url"], authors)
+        except (InvalidUrlError, UnknownPlatformError, PosterLookupError) as exc:
+            return _bad("invalid_url", detail=str(exc))
+        except UnknownSourceError as exc:
+            return _bad("not_found", detail=str(exc), status=404)
+    return jsonify(result)
+
+
 def _read_manifest_sync() -> dict | None:
     """All the filesystem-touching work for /api/extension/manifest,
     in a sync helper so the async route can dispatch it via

backend/app/api/settings.py

@@ -57,7 +57,6 @@ _EDITABLE_FIELDS = (
     "translation_target_lang",
     "translation_min_confidence",
     "wip_title_tagging_enabled",
-    "wip_soft_title_tagging_enabled",
 )
 
 # Per-host external-download toggles — all plain booleans, validated uniformly.
@@ -196,12 +195,6 @@ async def update_import_settings():
         return jsonify(
             {"error": "wip_title_tagging_enabled must be a boolean"}
         ), 400
-    if "wip_soft_title_tagging_enabled" in body and not isinstance(
-        body["wip_soft_title_tagging_enabled"], bool
-    ):
-        return jsonify(
-            {"error": "wip_soft_title_tagging_enabled must be a boolean"}
-        ), 400
 
     async with get_session() as session:
         row = await ImportSettings.load(session)

backend/app/api/sources.py

@@ -1,10 +1,13 @@
 """FC-3a: CRUD over Source rows. FC-3c adds POST /<id>/check."""
 
+from pathlib import Path
+
 from quart import Blueprint, jsonify, request
 from sqlalchemy import func, select
 
 from ..extensions import get_session
 from ..models import DownloadEvent, MembershipSync, PlatformMembership, Source
+from ..services import discord_poster_cleanup as poster_cleanup
 from ..services.artist_membership_service import ArtistMembershipService
 from ..services.artist_membership_service import rescan as membership_rescan
 from ..services.artist_service import ArtistService
@@ -463,3 +466,49 @@ async def adopt_membership():
             return jsonify({"already_tracked": exc.existing_id})
         artist_id = artist.id
     return jsonify({"source_id": record.id, "artist_id": artist_id}), 201
+
+
+# -- Discord: remove posts by people outside the poster list (#4486) --------------
+
+_IMAGES_ROOT = Path("/images")
+
+
+async def _poster_cleanup_preview(source_id: int):
+    async with get_session() as session:
+        return await session.run_sync(
+            lambda s: poster_cleanup.preview(s, source_id=source_id)
+        )
+
+
+@sources_bp.route("/<int:source_id>/discord/other-posters", methods=["GET"])
+async def other_posters_preview(source_id: int):
+    """What removing other posters' posts would delete. Nothing is touched."""
+    try:
+        projection = await _poster_cleanup_preview(source_id)
+    except LookupError:
+        return _bad("not_found", status=404)
+    except poster_cleanup.PosterCleanupError as exc:
+        return _bad("not_applicable", detail=str(exc), status=409)
+    projection["confirm_token"] = poster_cleanup.confirm_token(projection)
+    return jsonify(projection)
+
+
+@sources_bp.route("/<int:source_id>/discord/other-posters/remove", methods=["POST"])
+async def other_posters_remove(source_id: int):
+    """Delete them. `confirm` must be the token of the preview the operator saw:
+    a poster list edited since then changes the set, and the token with it."""
+    body = await request.get_json(silent=True) or {}
+    try:
+        projection = await _poster_cleanup_preview(source_id)
+    except LookupError:
+        return _bad("not_found", status=404)
+    except poster_cleanup.PosterCleanupError as exc:
+        return _bad("not_applicable", detail=str(exc), status=409)
+    expected = poster_cleanup.confirm_token(projection)
+    if body.get("confirm") != expected:
+        return _bad("confirm_mismatch", expected=expected)
+    async with get_session() as session:
+        result = await session.run_sync(
+            lambda s: poster_cleanup.apply(s, source_id=source_id, images_root=_IMAGES_ROOT)
+        )
+    return jsonify(result)

backend/app/api/system_activity.py

@@ -152,6 +152,8 @@ async def list_runs():
       queue=<name>     filter to one queue
       status=<status>  filter to one status (running/ok/error/timeout/retry)
       task=<substr>    case-insensitive substring match on task_name
+      celery_task_id=<id>  exactly one run — how a page follows a job it
+                           started without having to know its lane
       limit=<int>      default 50, max 200
       before_id=<int>  cursor for keyset pagination
 
@@ -167,6 +169,7 @@ async def list_runs():
     queue = request.args.get("queue")
     status = request.args.get("status")
     task = request.args.get("task")
+    celery_task_id = request.args.get("celery_task_id")
     before_id_raw = request.args.get("before_id")
     before_id = int(before_id_raw) if before_id_raw else None
 
@@ -176,6 +179,8 @@ async def list_runs():
             stmt = stmt.where(TaskRun.queue == queue)
         if status:
             stmt = stmt.where(TaskRun.status == status)
+        if celery_task_id:
+            stmt = stmt.where(TaskRun.celery_task_id == celery_task_id)
         if task:
             # Task names contain literal underscores (download_source,
             # vacuum_analyze) — escape LIKE wildcards so a search for

backend/app/celery_app.py

@@ -69,6 +69,8 @@ def make_celery() -> Celery:
             # up behind it (2026-09-24: 7 waiting, "all workers busy for 18
             # minutes"). An exact name wins over the glob above.
             "backend.app.tasks.maintenance.backfill_phash": {"queue": "maintenance_long"},
+            # Walks a folder tree per artist with undated posts (#4436).
+            "backend.app.tasks.maintenance.date_posts_from_records": {"queue": "maintenance_long"},
             "backend.app.tasks.backup.*": {"queue": "maintenance_long"},
             "backend.app.tasks.admin.*": {"queue": "maintenance_long"},
             "backend.app.tasks.library_audit.*": {"queue": "maintenance_long"},
@@ -156,6 +158,11 @@ def make_celery() -> Celery:
                 "schedule": 86400.0,  # daily — sweep .part/.partial left by a
                 # download/import killed mid-write (graceful-shutdown fallout)
             },
+            "date-posts-from-records-hourly": {
+                "task": "backend.app.tasks.maintenance.date_posts_from_records",
+                "schedule": 3600.0,  # an empty query once every native post is
+                # dated; otherwise upserts the _post.json a killed walk left (#4436)
+            },
             "backfill-phash-daily": {
                 "task": "backend.app.tasks.maintenance.backfill_phash",
                 "schedule": 86400.0,  # daily — NULL-only, so a no-op once the
@@ -223,11 +230,6 @@ def make_celery() -> Celery:
                 "schedule": 86400.0,  # auto-tag wip/editor process art (#1464);
                 # no-op unless process_auto_apply_enabled (opt-in)
             },
-            "soft-wip-conflict-audit-daily": {
-                "task": "backend.app.tasks.ml.scheduled_soft_wip_conflict_audit",
-                "schedule": 86400.0,  # flag ring-loud soft-WIP (sketch/doodle) tags
-                # for review (#1474); no-op with no content heads
-            },
             "prune-presentation-reviews-daily": {
                 "task": "backend.app.tasks.ml.prune_presentation_reviews",
                 "schedule": 86400.0,  # retention: drop resolved review flags >30d

backend/app/celery_signals.py

@@ -18,11 +18,18 @@ dark for that interval. Monitoring NEVER breaks the thing it's
 monitoring.
 """
 
+import functools
 import logging
 from datetime import UTC, datetime
 
 from celery.exceptions import SoftTimeLimitExceeded
-from celery.signals import task_failure, task_postrun, task_prerun, task_retry
+from celery.signals import (
+    task_failure,
+    task_postrun,
+    task_prerun,
+    task_retry,
+    worker_ready,
+)
 
 from .models import TaskRun
 from .tasks._sync_engine import sync_session_factory
@@ -53,42 +60,29 @@ _INT32_MIN = -2_147_483_648
 
 
 def _queue_for(task) -> str:
-    """Reverse the task→queue routing from celery_app.task_routes.
-    Keep in sync if task_routes is reordered.
+    """The queue Celery routes this task to — asked of the router itself.
 
-    Audit 2026-06-02: backup/admin/library_audit prefixes were
-    missing here even though task_routes sent all three to
-    'maintenance'. The TaskRun.queue column then lied for those
-    rows (claimed 'default') so per-queue dashboard filters and
-    per-queue threshold overrides silently missed them.
+    This was a hand-kept copy of `celery_app.task_routes`, and it drifted
+    twice (the 2026-06-02 audit, then #4432). Long-lane jobs were recorded as
+    `maintenance`, and translation and gpu_queue runs as `default`, where the
+    5-minute stall sweep failed healthy 35-minute translation runs. The router
+    answers from the same table the broker uses, so the two cannot disagree.
     """
     name = getattr(task, "name", "") or ""
-    if name.startswith("backend.app.tasks.import_file."):
-        return "import"
-    if name.startswith("backend.app.tasks.ml."):
-        return "ml"
-    if name.startswith("backend.app.tasks.thumbnail."):
-        return "thumbnail"
-    if name.startswith((
-        "backend.app.tasks.download.",
-        # External file-host fetches share the download lane (celery_app
-        # routes external.* → download). Mirror it here or TaskRun.queue
-        # lies 'default' for them, so per-queue dashboard filters and the
-        # per-queue threshold override miss them — the same gap the
-        # 2026-06-02 audit fixed for backup/admin/library_audit.
-        "backend.app.tasks.external.",
-    )):
-        return "download"
-    if name.startswith("backend.app.tasks.scan."):
-        return "scan"
-    if name.startswith((
-        "backend.app.tasks.maintenance.",
-        "backend.app.tasks.backup.",
-        "backend.app.tasks.admin.",
-        "backend.app.tasks.library_audit.",
-    )):
-        return "maintenance"
-    return "default"
+    app = getattr(task, "app", None)
+    if app is None:
+        from .celery_app import celery as app
+    return _routed_queue(app, name)
+
+
+@functools.lru_cache(maxsize=1024)
+def _routed_queue(app, name: str) -> str:
+    try:
+        queue = app.amqp.router.route({}, name).get("queue")
+    except Exception:  # noqa: BLE001 — monitoring never breaks the task
+        log.warning("task_run: could not resolve the queue for %s", name)
+        return "default"
+    return getattr(queue, "name", None) or (queue if isinstance(queue, str) else "default")
 
 
 def _target_id_from_args(args) -> int | None:
@@ -225,3 +219,43 @@ def _on_retry(sender=None, request=None, reason=None, einfo=None, **_):
         error_message=str(reason) if reason else None,
         retry_count=getattr(request, "retries", 0),
     )
+
+
+def _consumed_queues(consumer) -> set[str]:
+    """The queue names this worker process consumes (its `-Q`), or empty when
+    they can't be read — which makes the boot hook below a no-op, not a guess."""
+    try:
+        return {q.name for q in consumer.task_consumer.queues}
+    except Exception:  # noqa: BLE001 — shape varies across celery versions
+        return set()
+
+
+@worker_ready.connect
+def _on_worker_ready(sender=None, **_):
+    """The download lane clears what its previous process left behind (#4433).
+
+    A restart SIGKILLs any walk that outlives the stop grace, so its event is
+    never finalized and its platform lock is never released. Both used to wait
+    out timers — a 30-min stall sweep that then blamed the source, and a 27-min
+    lock TTL that stalled every other source on the platform. Only the process
+    consuming `download` does this; the other lanes booting beside it must not.
+    Best-effort: a failure here is logged and the worker still starts.
+    """
+    if "download" not in _consumed_queues(sender):
+        return
+    booted_at = datetime.now(UTC)
+    try:
+        from .services.download_recovery import interrupt_orphaned_download_events
+        from .services.platform_lock import release_all_platform_locks
+
+        with sync_session_factory()() as session:
+            closed = interrupt_orphaned_download_events(session, booted_at=booted_at)
+            session.commit()
+        released = release_all_platform_locks()
+        if closed or released:
+            log.info(
+                "download lane boot: closed %d orphaned download event(s) as "
+                "interrupted, released %d platform lock(s)", closed, released,
+            )
+    except Exception:  # noqa: BLE001 — never block the worker from starting
+        log.exception("download lane boot recovery failed")

backend/app/frontend.py

@@ -46,6 +46,14 @@ async def serve_extension(filename: str):
 
     The application/x-xpinstall MIME tells Firefox to show its native
     install prompt instead of downloading the file as a blob.
+
+    Caching differs by name, and has to. A versioned name is one build's bytes
+    forever, so it can be cached for good. `fabledcurator-latest.xpi` is ONE
+    URL whose bytes change on every release, and Quart's default for a file
+    is `public, max-age=43200`: a browser that fetched it once reused those
+    bytes for 12 hours, so "install the latest" quietly reinstalled the
+    previous build (operator-flagged 2026-09-25). It is `no-cache` — the ETag
+    still makes an unchanged file a cheap 304.
     """
     if not _XPI_NAME_RE.fullmatch(filename):
         abort(404)
@@ -56,10 +64,11 @@ async def serve_extension(filename: str):
         if not xpis:
             abort(404)
         latest = xpis[-1]
-        return await send_file(
+        resp = await send_file(
             latest, mimetype="application/x-xpinstall",
             attachment_filename=latest.name,
         )
+        return _cache(resp, "no-cache")
     target = (XPI_DIR / filename).resolve()
     try:
         target.relative_to(XPI_DIR)
@@ -67,10 +76,19 @@ async def serve_extension(filename: str):
         abort(404)
     if not target.is_file():
         abort(404)
-    return await send_file(
+    resp = await send_file(
         target, mimetype="application/x-xpinstall",
         attachment_filename=filename,
     )
+    return _cache(resp, "public, max-age=31536000, immutable")
+
+
+def _cache(resp, policy: str):
+    """Set the XPI's Cache-Control, dropping the Expires send_file adds so the
+    two can never disagree."""
+    resp.headers["Cache-Control"] = policy
+    resp.headers.pop("Expires", None)
+    return resp
 
 
 @frontend_bp.route("/")

backend/app/models/import_settings.py

@@ -39,7 +39,7 @@ class ImportSettings(Base):
     transparency_threshold: Mapped[float] = mapped_column(Float, nullable=False, default=0.9, server_default="0.9")
 
     skip_single_color: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False, server_default="false")
-    single_color_threshold: Mapped[float] = mapped_column(Float, nullable=False, default=0.95, server_default="0.95")
+    single_color_threshold: Mapped[float] = mapped_column(Float, nullable=False, default=0.995, server_default="0.995")
     single_color_tolerance: Mapped[int] = mapped_column(Integer, nullable=False, default=30, server_default="30")
 
     # Hamming distance over a 256-bit pHash (utils.phash, hash_size=16). The
@@ -238,13 +238,6 @@ class ImportSettings(Base):
     wip_title_tagging_enabled: Mapped[bool] = mapped_column(
         Boolean, nullable=False, default=True, server_default="true",
     )
-    # Soft WIP title tier (#1474): also tag sketch/doodle/scribble titles, but with
-    # a PROVISIONAL source (`wip_title_soft`) that never trains the head, since these
-    # are lower-precision (a finished "sketch" isn't WIP). OFF by default — a lower-
-    # precision tier is opt-in (the ring-loud audit surfaces false positives).
-    wip_soft_title_tagging_enabled: Mapped[bool] = mapped_column(
-        Boolean, nullable=False, default=False, server_default="false",
-    )
 
     @classmethod
     async def load(cls, session) -> ImportSettings:

backend/app/models/source.py

@@ -46,6 +46,11 @@ class Source(Base):
     enabled: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True, server_default="true")
 
     config_overrides: Mapped[dict | None] = mapped_column(JSON, nullable=True)
+    # alembic 0115: what the source is called on its platform, where the URL
+    # alone doesn't say — a Discord link is two numbers. The ingester that
+    # walks it refreshes it every walk, so a rename reads as the new name.
+    # NULL until a walk has read it, and on platforms that don't write it.
+    display_name: Mapped[str | None] = mapped_column(Text, nullable=True)
 
     last_checked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
     last_error: Mapped[str | None] = mapped_column(Text, nullable=True)

backend/app/services/audits/single_color.py

@@ -4,11 +4,19 @@ predicate for BOTH surfaces: FC-Cleanup's retroactive audit and — since
 2026-07-02 — the import-side filter (Importer._single_color_hit /
 SkipReason.single_color), so what the audit flags and what the import
 skips can never disagree.
+
+It is meant to catch the blank: a placeholder, an error tile, a solid fill.
+Line art is the case it must not catch (#4483): a pencil doodle on white can be
+well over 95% white even at full size, and a smoothing downsample blends its strokes
+into the paper until it measures as blank. So the sample is taken by NEAREST
+(each sampled pixel is a real pixel, strokes keep their contrast), at 256px
+so thin strokes are still hit, and the default threshold is near-total
+(0.995) — a few percent of ink is a drawing, not an empty image.
 """
 
 from PIL import Image
 
-_THUMB_SIZE = (64, 64)
+_THUMB_SIZE = (256, 256)
 
 
 def evaluate(
@@ -20,7 +28,8 @@ def evaluate(
     """True iff the fraction of pixels within `tolerance` (Euclidean RGB
     distance) of the dominant color exceeds `threshold`.
 
-    Downsamples to 64x64 for speed (~4ms regardless of source size).
+    Samples 256x256 by NEAREST (see the module docstring for why not a
+    smoothing resample).
     Alpha channels are stripped; only RGB is considered. Animated images
     use frame 0 (PIL's default after Image.open without seek).
     """
@@ -30,7 +39,7 @@ def evaluate(
     elif im.mode not in ("RGB", "L"):
         im = im.convert("RGB")
     if im.size != _THUMB_SIZE:
-        im = im.resize(_THUMB_SIZE, Image.Resampling.BILINEAR)
+        im = im.resize(_THUMB_SIZE, Image.Resampling.NEAREST)
     pixels = list(im.getdata())
     if not pixels:
         return False

backend/app/services/discord_client.py

@@ -32,6 +32,13 @@ Two deliberate departures, both about the walk order, neither about content:
     the walk. gallery-dl skips only nested channels; one private thread the
     token cannot read would otherwise stop every channel after it.
 
+And one about content: a message is taken only if it has an image or video
+ATTACHMENT (`has_visual_attachment`). Discord is where creators chat as well
+as post, and the operator wants the art, not the conversation (2026-09-28): a
+text line, a lone archive or PSD, a pasted link's preview or a Tenor GIF is
+chat. A message that passes keeps every file gallery-dl would take, numbered
+as gallery-dl numbers them, so the on-disk names still match.
+
 FC runs on a plain-HTTP homelab; nothing here uses a secure-context Web API.
 """
 
@@ -68,6 +75,9 @@ _THREADS_BATCH = 25
 # it is honoured when present; 60s is the fallback and the cap.
 _MAX_429_RETRIES = 4
 _429_WAIT_SECONDS = 60.0
+# How far back the poster picker looks: two pages. Enough to see who posts in
+# a channel, few enough to answer while the operator waits (#4488).
+_POSTER_SCAN = 200
 
 # https://discord.com/developers/docs/resources/message#message-object-message-types
 # DEFAULT, REPLY, CHAT_INPUT_COMMAND — the ones that carry user content.
@@ -79,6 +89,13 @@ _FORUM = frozenset({15, 16})            # forum, media: threads only
 _CATEGORY = 4
 _SERVER_WALK = _TEXT | _FORUM
 _EMBED_TYPES = frozenset({"image", "gifv", "video"})
+# What makes a message art rather than chat: an attached file FC imports as an
+# image or video. Mirrors importer.ALL_EXTS (not imported: that module is the
+# import pipeline, and this one is a network client).
+_VISUAL_EXTS = frozenset({
+    "png", "jpg", "jpeg", "gif", "webp", "bmp", "tif", "tiff",
+    "mp4", "mov", "avi", "mkv", "webm", "m4v", "wmv", "flv",
+})
 
 _URL_RE = re.compile(
     r"^(?:https?://)?(?:www\.|ptb\.|canary\.)?discord(?:app)?\.com/channels/"
@@ -163,6 +180,82 @@ def message_text(message: dict) -> str:
     return "\n".join(p for p in parts if p)
 
 
+def _message_and_snapshots(message: dict) -> list[dict]:
+    """The message itself, then each forwarded message it carries."""
+    return [message] + [
+        (s or {}).get("message") or {}
+        for s in message.get("message_snapshots") or []
+        if ((s or {}).get("message") or {}).get("type", 0) in MESSAGE_TYPES
+    ]
+
+
+def _is_visual(attachment: dict) -> bool:
+    ctype = (attachment.get("content_type") or "").lower()
+    if ctype.startswith(("image/", "video/")):
+        return True
+    name = attachment.get("filename") or attachment.get("url") or ""
+    return nameext_from_url(name)[1] in _VISUAL_EXTS
+
+
+def has_visual_attachment(message: dict) -> bool:
+    """Does this message, or a message it forwards, have an image or video
+    attached? The one test for "art, not chat" — see the module docstring."""
+    return any(
+        att.get("url") and _is_visual(att)
+        for snap in _message_and_snapshots(message)
+        for att in snap.get("attachments") or []
+    )
+
+
+_SQUASH = re.compile(r"[\W_]+", re.UNICODE)
+# Words a server name wraps around its creator's: "Todding's Server",
+# "The Official Todding Discord".
+_SERVER_WORDS = frozenset({"server", "discord", "the", "official", "community", "s"})
+
+
+def _squash(text: str | None) -> str:
+    return _SQUASH.sub("", (text or "").lower())
+
+
+def _server_tokens(server_name: str | None) -> list[str]:
+    name = (server_name or "").lower().replace("'s", " ").replace("\u2019s", " ")
+    words = [w for w in _SQUASH.split(name) if w and w not in _SERVER_WORDS]
+    tokens = [w for w in words if len(w) >= 3]
+    joined = "".join(words)
+    if len(joined) >= 3 and joined not in tokens:
+        tokens.append(joined)
+    return tokens
+
+
+def rank_posters(server_name: str | None, owner_id, posters: list[dict]) -> list[dict]:
+    """Mark who is probably the creator a server is named for, and order the
+    list for picking: suggested first, then by images posted, then messages.
+
+    Two signals, each a reason the picker shows beside the name:
+      - they own the server;
+      - their username or display name matches the server's name, once
+        "'s Server", "Official", "Discord" and punctuation are taken off
+        ("Todding's Server" and "todding").
+    Neither signal alone is proof, which is why this suggests and never
+    decides: the operator ticks the list. Bots are never suggested."""
+    tokens = _server_tokens(server_name)
+    owner = str(owner_id) if owner_id else None
+    ranked = []
+    for p in posters:
+        reasons = []
+        if owner and p.get("id") == owner:
+            reasons.append("owns the server")
+        names = [n for n in (_squash(p.get("username")), _squash(p.get("global_name"))) if len(n) >= 3]
+        if any(t in n or n in t for t in tokens for n in names):
+            reasons.append("name matches the server")
+        ranked.append({**p, "reasons": reasons, "suggested": False})
+    best = max((len(r["reasons"]) for r in ranked if not r.get("bot")), default=0)
+    for r in ranked:
+        r["suggested"] = best > 0 and not r.get("bot") and len(r["reasons"]) == best
+    ranked.sort(key=lambda r: (not r["suggested"], -r.get("images", 0), -r.get("messages", 0)))
+    return ranked
+
+
 @dataclass
 class MediaItem:
     """One file of a Discord message. `filename`/`extension` are gallery-dl's
@@ -212,6 +305,8 @@ class DiscordClient:
         self._server: dict = {}
         self._channels: dict[str, dict] = {}
         self._skip_feed = False
+        # Whose messages the walk takes (`only_from`); empty takes everyone's.
+        self._authors: frozenset[str] = frozenset()
 
     # -- request -----------------------------------------------------------
 
@@ -373,6 +468,43 @@ class DiscordClient:
             if meta["channel_type"] in _SERVER_WALK:
                 yield from self._feeds(meta["channel_id"], safe=True)
 
+    def only_from(self, authors) -> None:
+        """Take only messages posted by these people: user ids, usernames or
+        display names, any case. A creator's server is full of other members
+        posting their own pictures; the source is subscribed to the creator.
+        Empty or None takes everyone's, as before."""
+        self._authors = frozenset(
+            str(a).strip().lower() for a in authors or () if str(a).strip()
+        )
+
+    def _author_wanted(self, message: dict) -> bool:
+        if not self._authors:
+            return True
+        author = message.get("author") or {}
+        names = (author.get("id"), author.get("username"), author.get("global_name"))
+        return any(str(n).lower() in self._authors for n in names if n)
+
+    def source_label(self, url: str) -> str | None:
+        """What the source is called in Discord — `Server · #channel`, a
+        thread as `#parent › thread`, a whole server by its name — from the
+        metadata the walk loaded. None when the walk never got that far."""
+        try:
+            _, channel_id = parse_source_url(url)
+        except DiscordAPIError:
+            return None
+        server = self._server.get("server") or None
+        if channel_id is None:
+            return server
+        meta = self._channels.get(channel_id) or {}
+        name = meta.get("channel")
+        if not name:
+            return None
+        if name != "DMs":
+            name = f"#{name}"
+            if meta.get("is_thread") and meta.get("parent"):
+                name = f"#{meta['parent']} › {meta['channel']}"
+        return f"{server} · {name}" if server else name
+
     def skip_feed(self) -> None:
         """Optional core seam (#4413): end the current channel and go on to the
         next one. A tick's early-out means THIS channel has nothing new, not
@@ -440,6 +572,8 @@ class DiscordClient:
             for message in messages:
                 if message.get("type") not in MESSAGE_TYPES:
                     continue
+                if not self._author_wanted(message):
+                    continue
                 message["_meta"] = meta
                 yield message, meta, page_cursor
                 if self._skip_feed:
@@ -454,13 +588,14 @@ class DiscordClient:
     def extract_media(post: dict, included: dict | None = None) -> list[MediaItem]:
         """gallery-dl's file list for one message: attachments, then the first
         of video/image/thumbnail `proxy_url` of each file-bearing embed, then
-        the same for every forwarded snapshot; numbered from 1 across them."""
+        the same for every forwarded snapshot; numbered from 1 across them.
+
+        Empty for a message with no image or video attached: that is chat,
+        whatever else it carries (`has_visual_attachment`)."""
+        if not has_visual_attachment(post):
+            return []
         mid = str(post.get("id") or "")
-        snapshots = [post] + [
-            (s or {}).get("message") or {}
-            for s in post.get("message_snapshots") or []
-            if ((s or {}).get("message") or {}).get("type", 0) in MESSAGE_TYPES
-        ]
+        snapshots = _message_and_snapshots(post)
         found: list[tuple[str, str, str | None]] = []
         for snap in snapshots:
             for att in snap.get("attachments") or []:
@@ -498,10 +633,10 @@ class DiscordClient:
         """`(message:<id>, <id>)` — gates the message record through the seen
         ledger, like `post:<id>` on the other platforms.
 
-        None for a message with no files. gallery-dl wrote a sidecar only
-        beside a file, so a text-only chat line never became a post, and the
-        drop grouping (discord_grouping) is built on that: a channel's chatter
-        recorded as posts would bury the drops it exists to surface."""
+        None for a message `extract_media` takes nothing from, i.e. one with
+        no image or video attached. The drop grouping (discord_grouping) is
+        built on that: a channel's chatter recorded as posts would bury the
+        drops it exists to surface."""
         mid = post.get("id")
         mid = str(mid) if mid is not None else ""
         if not mid or not cls.extract_media(post):
@@ -528,6 +663,61 @@ class DiscordClient:
                 pass
         return out
 
+    def recent_posters(
+        self, server_id: str | None, channel_id: str, *, max_messages: int = _POSTER_SCAN,
+    ) -> dict:
+        """Who has posted lately in a channel, for picking a source's poster
+        list (#4488): the newest `max_messages` messages, tallied per author.
+        Deliberately shallow — it answers "who posts here", not "who ever did".
+        Every poster comes back with their stable id, which is what the list
+        stores: a username can change on a whim, an id can't."""
+        server: dict = {}
+        if server_id:
+            try:
+                server = self._get(f"/guilds/{server_id}") or {}
+            except DiscordAPIError:
+                server = {}
+        tally: dict[str, dict] = {}
+        before = None
+        seen = 0
+        while seen < max_messages:
+            page = self._get(
+                f"/channels/{channel_id}/messages",
+                {"limit": min(_MESSAGES_BATCH, max_messages - seen), "before": before},
+            )
+            if not isinstance(page, list) or not page:
+                break
+            for message in page:
+                seen += 1
+                if message.get("type") not in MESSAGE_TYPES:
+                    continue
+                author = message.get("author") or {}
+                aid = str(author.get("id") or "")
+                if not aid:
+                    continue
+                row = tally.setdefault(aid, {
+                    "id": aid,
+                    "username": author.get("username"),
+                    "global_name": author.get("global_name"),
+                    "bot": bool(author.get("bot")),
+                    "messages": 0,
+                    "images": 0,
+                })
+                row["messages"] += 1
+                if has_visual_attachment(message):
+                    row["images"] += 1
+            if len(page) < _MESSAGES_BATCH:
+                break
+            before = str(page[-1]["id"])
+        return {
+            "server": server.get("name") or None,
+            "owner_id": str(server["owner_id"]) if server.get("owner_id") else None,
+            "scanned": seen,
+            "posters": rank_posters(
+                server.get("name"), server.get("owner_id"), list(tally.values()),
+            ),
+        }
+
     def verify_auth(self, url: str) -> tuple[bool | None, str]:
         """Is the token valid, and can it see what the source names?"""
         try:

backend/app/services/discord_downloader.py

@@ -195,6 +195,7 @@ class DiscordDownloader(BaseNativeDownloader):
             "parent": meta.get("parent"),
             "is_thread": meta.get("is_thread"),
             "author": author.get("username"),
+            "author_name": author.get("global_name"),
             "author_id": author.get("id"),
             "message": body,
             "date": post.get("timestamp"),

backend/app/services/discord_ingester.py

@@ -13,6 +13,11 @@ Two things differ from the cookie platforms:
     something; a Discord drop is routinely files and nothing else, so on
     Discord that is an ordinary backfill, not a broken parser.
 
+And two things only a Discord source has: `discord_authors` in its
+config_overrides limits it to the creator's own messages (a server's other
+members post pictures too), and it learns its own name — the server and
+channel it walks — into `source.display_name`.
+
 `campaign_id` is the source URL (a server, channel, thread or category link).
 FC runs on a plain-HTTP homelab; nothing here uses a secure-context Web API.
 """
@@ -20,15 +25,23 @@ FC runs on a plain-HTTP homelab; nothing here uses a secure-context Web API.
 from __future__ import annotations
 
 import asyncio
+import logging
 from collections.abc import Callable
 from pathlib import Path
 
-from ..models import DiscordFailedMedia, DiscordSeenMedia
+from sqlalchemy import select, update
+
+from ..models import DiscordFailedMedia, DiscordSeenMedia, Source
 from .discord_client import DiscordAPIError, DiscordClient, MediaItem
 from .discord_downloader import DiscordDownloader
 from .ingest_core import Ingester
 
+log = logging.getLogger(__name__)
+
 _LEDGER_KEY_MAX = 128
+# `config_overrides` key: the people whose messages this source takes (user
+# ids, usernames or display names). Absent or empty takes everyone's.
+AUTHORS_KEY = "discord_authors"
 
 
 def _ledger_key(media: MediaItem) -> str:
@@ -74,6 +87,46 @@ class DiscordIngester(Ingester):
             body_canary=False,
         )
 
+    def run(self, **kwargs):
+        """The core walk, bracketed by the two things only a Discord source
+        has: whose messages it takes, read before the walk, and the name of
+        what it walks, written after it (the walk is what loads that name)."""
+        source_id = kwargs["source_id"]
+        self.client.only_from(self._source_authors(source_id))
+        try:
+            return super().run(**kwargs)
+        finally:
+            self._record_display_name(source_id, kwargs["campaign_id"])
+
+    def _source_authors(self, source_id: int) -> list:
+        if self.session_factory is None:
+            return []
+        with self.session_factory() as session:
+            overrides = session.execute(
+                select(Source.config_overrides).where(Source.id == source_id)
+            ).scalar_one_or_none() or {}
+        authors = overrides.get(AUTHORS_KEY) or []
+        return authors if isinstance(authors, list) else []
+
+    def _record_display_name(self, source_id: int, url: str) -> None:
+        """Refreshed on every walk, never written once: a renamed channel
+        should read as its new name. A name the walk couldn't read leaves the
+        stored one alone, and a failure here never fails the walk."""
+        label = self.client.source_label(url)
+        if not label or self.session_factory is None:
+            return
+        try:
+            with self.session_factory() as session:
+                session.execute(
+                    update(Source)
+                    .where(Source.id == source_id)
+                    .where(Source.display_name.is_distinct_from(label))
+                    .values(display_name=label)
+                )
+                session.commit()
+        except Exception as exc:  # a name is decoration — never fail the walk
+            log.warning("Discord: couldn't record source %s's name: %s", source_id, exc)
+
 
 async def verify_discord_credential(url: str, auth_token: str | None) -> tuple[bool | None, str]:
     """The uniform `(ok, message)` probe: is the token valid, and can its

backend/app/services/discord_poster_cleanup.py

@@ -0,0 +1,243 @@
+"""Remove a Discord source's posts by people outside its poster list (#4486).
+
+A creator's server is full of other members posting their own pictures. The
+poster list (`discord_authors`, #4481) stops a walk taking them; this removes
+the ones taken before the list existed. The operator sets the list first, then
+previews what would go, then applies.
+
+## What goes
+
+A post of this source whose record names its poster (`author_id` / `author`,
+written by `DiscordDownloader.write_post_record`) and names someone NOT on the
+list. Two kinds of post are never touched:
+
+* a post whose record names no poster — a message recorded before the native
+  ingester, whose poster FC cannot tell. Counted as `unknown`, never guessed;
+* a synthetic drop post (`synthesized_by`) — FC authored it, and it is handled
+  below as a consequence, not matched as a poster's post.
+
+An image goes when every REAL post it belongs to is going. A link to a
+synthetic drop does not keep an image: the drop only references its members'
+images. An image also on a kept post — the creator re-posting a piece someone
+else shared — stays.
+
+A drop that absorbed a removed message is deleted outright. Deleting a drop is
+its undo (discord_grouping's honesty rule): its remaining members return to
+the feed and the grouping sweep regroups them on its next run, so no half-
+rebuilt drop keeps text or thumbnails from someone it no longer contains.
+
+Preview and apply spread the same predicates (rule 93, snippet #3087).
+"""
+
+from __future__ import annotations
+
+import logging
+from pathlib import Path
+
+from sqlalchemy import and_, delete, exists, func, or_, select
+from sqlalchemy.orm import Session, aliased
+
+from ..models import ImageProvenance, ImageRecord, Post, PostAttachment, Source
+from .cleanup_service import delete_images
+from .discord_ingester import AUTHORS_KEY
+
+log = logging.getLogger(__name__)
+
+PLATFORM = "discord"
+# The record keys that name a message's poster. `author_name` (the display
+# name) is only on records written after 2026-09-28.
+_POSTER_KEYS = ("author_id", "author", "author_name")
+
+
+class PosterCleanupError(ValueError):
+    """The source can't be cleaned this way (not Discord, or no list)."""
+
+
+def source_authors(source: Source) -> list[str]:
+    """The source's poster list, lowercased; empty means everyone's wanted."""
+    authors = (source.config_overrides or {}).get(AUTHORS_KEY) or []
+    if not isinstance(authors, list):
+        return []
+    return sorted({str(a).strip().lower() for a in authors if str(a).strip()})
+
+
+def _poster(key: str):
+    return func.lower(Post.raw_metadata[key].as_string())
+
+
+def _has_poster():
+    return or_(*(Post.raw_metadata[k].as_string().isnot(None) for k in ("author_id", "author")))
+
+
+def _real_post_conditions(source_id: int) -> list:
+    return [Post.source_id == source_id, Post.synthesized_by.is_(None)]
+
+
+def _named_poster_conditions(source_id: int) -> list:
+    """A real post of this source whose record says who posted it."""
+    return [*_real_post_conditions(source_id), _has_poster()]
+
+
+def _other_poster_post_conditions(source_id: int, authors: list[str]) -> list:
+    """The posts that go: a named poster none of whose names is on the list."""
+    return [
+        *_named_poster_conditions(source_id),
+        *(func.coalesce(_poster(k), "").notin_(authors) for k in _POSTER_KEYS),
+    ]
+
+
+def _doomed_post_ids(source_id: int, authors: list[str]):
+    # correlate(None): used inside queries that are themselves over `post` (the
+    # drops, the delete), where auto-correlation would bind this to the outer
+    # row instead of scanning the table.
+    return (
+        select(Post.id)
+        .where(*_other_poster_post_conditions(source_id, authors))
+        .correlate(None)
+    )
+
+
+def _image_conditions(source_id: int, authors: list[str]) -> list:
+    """Images that belong to a removed post and to no kept real post."""
+    doomed = _doomed_post_ids(source_id, authors)
+    keeper = aliased(Post)
+    on_doomed = or_(
+        ImageRecord.primary_post_id.in_(doomed),
+        exists().where(
+            ImageProvenance.image_record_id == ImageRecord.id,
+            ImageProvenance.post_id.in_(doomed),
+        ),
+    )
+    on_kept = or_(
+        and_(
+            ImageRecord.primary_post_id.isnot(None),
+            ImageRecord.primary_post_id.notin_(doomed),
+        ),
+        exists().where(
+            ImageProvenance.image_record_id == ImageRecord.id,
+            ImageProvenance.post_id == keeper.id,
+            keeper.synthesized_by.is_(None),
+            keeper.id.notin_(doomed),
+        ),
+    )
+    return [on_doomed, ~on_kept]
+
+
+def _drop_conditions(source_id: int, authors: list[str]) -> list:
+    """The synthetic drops that absorbed a removed message."""
+    member = aliased(Post)
+    return [
+        Post.source_id == source_id,
+        Post.synthesized_by.isnot(None),
+        exists().where(
+            member.absorbed_by_post_id == Post.id,
+            member.id.in_(_doomed_post_ids(source_id, authors)),
+        ),
+    ]
+
+
+def _attachment_conditions(source_id: int, authors: list[str]) -> list:
+    return [PostAttachment.post_id.in_(_doomed_post_ids(source_id, authors))]
+
+
+def _load(session: Session, source_id: int) -> tuple[Source, list[str]]:
+    source = session.get(Source, source_id)
+    if source is None:
+        raise LookupError(source_id)
+    if source.platform != PLATFORM:
+        raise PosterCleanupError("Only a Discord source has posters to filter by.")
+    authors = source_authors(source)
+    if not authors:
+        raise PosterCleanupError(
+            "Set this source's 'Only posts by' list first — with no list, "
+            "every poster is wanted and nothing would be removed."
+        )
+    return source, authors
+
+
+def _count(session: Session, stmt) -> int:
+    return session.execute(stmt).scalar_one()
+
+
+def preview(session: Session, *, source_id: int) -> dict:
+    """What `apply` would remove, per poster, without touching anything."""
+    _, authors = _load(session, source_id)
+    who = func.coalesce(
+        Post.raw_metadata["author_name"].as_string(),
+        Post.raw_metadata["author"].as_string(),
+        Post.raw_metadata["author_id"].as_string(),
+    )
+    rows = session.execute(
+        select(who, func.count(Post.id))
+        .where(*_other_poster_post_conditions(source_id, authors))
+        .group_by(who)
+        .order_by(func.count(Post.id).desc())
+    ).all()
+    posters = [{"poster": name, "posts": n} for name, n in rows]
+    unknown = _count(session, select(func.count(Post.id)).where(
+        *_real_post_conditions(source_id), ~_has_poster(),
+    ))
+    return {
+        "authors": authors,
+        "posters": posters,
+        "posts": sum(p["posts"] for p in posters),
+        "images": _count(session, select(func.count(ImageRecord.id)).where(
+            *_image_conditions(source_id, authors))),
+        "attachments": _count(session, select(func.count(PostAttachment.id)).where(
+            *_attachment_conditions(source_id, authors))),
+        "drops": _count(session, select(func.count(Post.id)).where(
+            *_drop_conditions(source_id, authors))),
+        "unknown_posts": unknown,
+    }
+
+
+def confirm_token(projection: dict) -> str:
+    """What the operator's apply must echo: the preview it was shown, so a
+    list edited between preview and apply can't delete an unseen set."""
+    return f"remove-{projection['posts']}-posts-{projection['images']}-images"
+
+
+def apply(session: Session, *, source_id: int, images_root: Path) -> dict:
+    """Remove them. Counts are taken before the deletes they describe — once
+    the rows are gone there is nothing left to count (snippet #3087 note 2)."""
+    projection = preview(session, source_id=source_id)
+    _, authors = _load(session, source_id)
+
+    image_ids = session.execute(
+        select(ImageRecord.id).where(*_image_conditions(source_id, authors))
+    ).scalars().all()
+    # Drops first-class: found BEFORE their members go, since the link that
+    # finds them is the member's absorbed_by_post_id.
+    drop_ids = session.execute(
+        select(Post.id).where(*_drop_conditions(source_id, authors))
+    ).scalars().all()
+
+    deleted = delete_images(session, image_ids=list(image_ids), images_root=images_root)
+    # Attachments before posts: post_attachment.post_id is SET NULL, and a
+    # NULL-post attachment collides on its partial unique index (see
+    # cleanup_service.delete_artist_cascade).
+    attachments = session.execute(
+        delete(PostAttachment).where(*_attachment_conditions(source_id, authors))
+    ).rowcount or 0
+    posts = session.execute(
+        Post.__table__.delete().where(Post.id.in_(_doomed_post_ids(source_id, authors)))
+    ).rowcount or 0
+    drops = 0
+    if drop_ids:
+        drops = session.execute(
+            Post.__table__.delete().where(Post.id.in_(drop_ids))
+        ).rowcount or 0
+    session.commit()
+    log.info(
+        "discord poster cleanup (source %s, keeping %s): %d post(s), %d image(s), "
+        "%d attachment(s), %d drop(s) removed",
+        source_id, authors, posts, deleted["images_deleted"], attachments, drops,
+    )
+    return {
+        **projection,
+        "posts_deleted": posts,
+        "images_deleted": deleted["images_deleted"],
+        "files_deleted": deleted["files_deleted"],
+        "attachments_deleted": attachments,
+        "drops_deleted": drops,
+    }

backend/app/services/download_recovery.py

@@ -0,0 +1,57 @@
+"""Closing the download runs a worker restart orphaned (#4433).
+
+Its own module, importing nothing but the model, because its caller is the
+worker boot hook in `celery_signals` — which every download task imports via
+`celery_app`. Living in `tasks.maintenance` put the whole maintenance import
+graph, the membership roster included, on the fetch path, which
+`test_gated_reason` forbids.
+"""
+from __future__ import annotations
+
+from datetime import UTC, datetime
+
+from sqlalchemy import literal, update
+from sqlalchemy.dialects.postgresql import JSONB
+
+from ..models import DownloadEvent
+
+DOWNLOAD_INTERRUPTED_MESSAGE = (
+    "interrupted by a worker restart — the next check picks it up where it left off"
+)
+
+
+def interrupt_orphaned_download_events(session, *, booted_at: datetime) -> int:
+    """Close the download events a restart orphaned, without blaming the source.
+
+    Called when the download lane comes up (#4433). Anything still
+    pending/running from before this boot belongs to the previous process:
+    a walk that outlived the 90s stop grace was SIGKILLed, and a queued or
+    serialize-deferred task is held unacked until Redis redelivers it about an
+    hour later. Left alone, the 30-min stall sweep would error each one and
+    bump `consecutive_failures`, backing the source off as if the platform had
+    failed.
+
+    Instead they end as `skipped` (terminal, not a failure) and the source is
+    not touched: `last_checked_at` keeps its old value, so the next tick finds
+    it due and the walk resumes from its checkpoint. A redelivered message
+    that arrives later finds no pending event and opens a fresh one.
+
+    An event promoted to running after the boot has `started_at` reset to its
+    real start (download_service), so it is never caught here. Does NOT commit.
+    """
+    now = datetime.now(UTC)
+    result = session.execute(
+        update(DownloadEvent)
+        .where(DownloadEvent.status.in_(["pending", "running"]))
+        .where(DownloadEvent.started_at < booted_at)
+        .values(
+            status="skipped",
+            finished_at=now,
+            error=DOWNLOAD_INTERRUPTED_MESSAGE,
+            metadata_=DownloadEvent.metadata_.op("||")(
+                literal({"error_type": "interrupted"}, JSONB)
+            ),
+        )
+        .returning(DownloadEvent.id)
+    )
+    return len(result.all())

backend/app/services/extension_service.py

@@ -23,6 +23,12 @@ log = logging.getLogger(__name__)
 
 # The probe runs while the chip is drawing; names that take longer are skipped.
 _NAME_LOOKUP_SECONDS = 6.0
+# The poster picker waits on two pages of a channel's messages (#4488).
+_POSTER_LOOKUP_SECONDS = 20.0
+
+# A source's poster list (discord_ingester.AUTHORS_KEY) holds user ids; this
+# keeps the name each id was picked under, for showing the list to a person.
+AUTHOR_LABELS_KEY = "discord_author_labels"
 
 
 class UnknownPlatformError(Exception):
@@ -37,6 +43,15 @@ class UnknownArtistError(Exception):
     """quick-add named an `artist_id` that does not exist."""
 
 
+class PosterLookupError(Exception):
+    """The Discord poster picker couldn't read the channel (no token, no
+    access, not a channel page, or Discord was slow)."""
+
+
+class UnknownSourceError(Exception):
+    """No source follows this Discord channel or its server."""
+
+
 # Mirrored byte-for-byte from extension/lib/platforms.js
 # PLATFORM_ARTIST_PATTERNS. Keep these two copies in sync by hand —
 # reviewers catch drift.
@@ -110,6 +125,7 @@ class ExtensionService:
         artist_id: int | None = None,
         artist_name: str | None = None,
         use_platform_name: bool = False,
+        discord_authors: list[dict] | None = None,
     ) -> dict:
         """Add `url` as a source. `artist_id` connects it to an existing
         artist, `artist_name` to that artist (created if new); with neither,
@@ -119,7 +135,10 @@ class ExtensionService:
         name is canon: a Patreon source added to an existing artist renames
         that artist to the creator's Patreon display name. Name only — the
         slug, and every path keyed off it, never moves (#130). Ignored on every
-        other platform, and when the name can't be read."""
+        other platform, and when the name can't be read.
+
+        `discord_authors` ([{id, name}], #4488) sets a Discord source's poster
+        list in the same step, on a new source or one already there."""
         platform, raw_slug = self._derive(url)
         url = canonical_source_url(platform, url, raw_slug)
         renamed_from = None
@@ -133,6 +152,8 @@ class ExtensionService:
             artist = (await self.session.execute(
                 select(Artist).where(Artist.id == existing.artist_id)
             )).scalar_one()
+            if platform == DISCORD and discord_authors is not None:
+                await self._apply_posters(existing, discord_authors)
             return self._shape(existing, artist, created_source=False, created_artist=False)
 
         if artist_id is not None:
@@ -154,11 +175,98 @@ class ExtensionService:
         source, created_source = await self._find_or_create_source(
             artist_id=artist.id, platform=platform, url=url,
         )
+        if platform == DISCORD and discord_authors is not None:
+            await self._apply_posters(source, discord_authors)
         shaped = self._shape(source, artist, created_source, created_artist)
         if renamed_from is not None:
             shaped["renamed_from"] = renamed_from
         return shaped
 
+    # -- Discord poster picker (#4488) ------------------------------------------
+
+    def _discord_page(self, url: str) -> tuple[str, str]:
+        platform, raw_slug = self._derive(url)
+        if platform != DISCORD:
+            raise InvalidUrlError("not a Discord page")
+        server_id, _, channel_id = raw_slug.partition("/")
+        if not channel_id:
+            raise PosterLookupError("Open a channel to see who posts in it.")
+        return server_id, channel_id
+
+    async def _source_for_page(self, server_id: str, channel_id: str) -> Source | None:
+        """The source this channel's posts land on: the channel's own, else a
+        whole-server source that walks it."""
+        base = f"https://discord.com/channels/{server_id}"
+        return (
+            await self._existing_source(DISCORD, f"{base}/{channel_id}")
+            or await self._existing_source(DISCORD, base)
+        )
+
+    async def discord_posters(self, url: str) -> dict:
+        """Who posts in the channel `url` shows, newest `_POSTER_SCAN`
+        messages deep, with the likely creator marked — and, when a source
+        already follows it, the poster list that source has now."""
+        server_id, channel_id = self._discord_page(url)
+        import asyncio
+
+        from .credential_service import CredentialService
+        from .discord_client import DiscordAPIError, DiscordClient
+        token = None
+        if self._crypto is not None:
+            token = await CredentialService(self.session, self._crypto).get_token(DISCORD)
+        if not token:
+            raise PosterLookupError("No Discord token is saved in FabledCurator.")
+        client = DiscordClient(token, max_retries=0)
+        loop = asyncio.get_running_loop()
+        try:
+            found = await asyncio.wait_for(
+                loop.run_in_executor(None, client.recent_posters, server_id, channel_id),
+                timeout=_POSTER_LOOKUP_SECONDS,
+            )
+        except TimeoutError as exc:
+            raise PosterLookupError("Discord took too long to answer; try again.") from exc
+        except DiscordAPIError as exc:
+            raise PosterLookupError(f"Couldn't read this channel: {exc}") from exc
+        source = await self._source_for_page(server_id, channel_id)
+        co = (source.config_overrides or {}) if source is not None else {}
+        from .discord_ingester import AUTHORS_KEY
+        return {
+            **found,
+            "source_id": source.id if source is not None else None,
+            "selected": list(co.get(AUTHORS_KEY) or []),
+            # So someone on the list who hasn't posted lately still shows by
+            # name, and can be unticked.
+            "selected_labels": dict(co.get(AUTHOR_LABELS_KEY) or {}),
+        }
+
+    async def set_discord_posters(self, url: str, authors: list[dict]) -> dict:
+        """Store the picked posters on the source that follows `url`'s channel."""
+        server_id, channel_id = self._discord_page(url)
+        source = await self._source_for_page(server_id, channel_id)
+        if source is None:
+            raise UnknownSourceError("No source follows this channel yet.")
+        return await self._apply_posters(source, authors)
+
+    async def _apply_posters(self, source: Source, authors: list[dict]) -> dict:
+        """Ids are what the list keys on — a username can change on a whim,
+        an id can't — and the name each was picked under rides beside it for
+        showing the list to a person. An empty pick clears the list, which
+        takes everyone's posts again."""
+        from .discord_ingester import AUTHORS_KEY
+        picked = [a for a in authors if str(a.get("id") or "").strip()]
+        co = dict(source.config_overrides or {})
+        if picked:
+            co[AUTHORS_KEY] = [str(a["id"]).strip() for a in picked]
+            co[AUTHOR_LABELS_KEY] = {
+                str(a["id"]).strip(): str(a.get("name") or a["id"]) for a in picked
+            }
+        else:
+            co.pop(AUTHORS_KEY, None)
+            co.pop(AUTHOR_LABELS_KEY, None)
+        source.config_overrides = co or None
+        await self.session.commit()
+        return {"source_id": source.id, "discord_authors": co.get(AUTHORS_KEY, [])}
+
     async def _adopt_patreon_name(self, artist, raw_slug: str, url: str) -> str | None:
         """Rename `artist` to the Patreon display name; the old name when it
         changed, else None. Unreadable name → no rename, never the handle."""

backend/app/services/importer.py

@@ -49,10 +49,8 @@ from .audits import single_color
 from .link_extract import extract_external_links
 from .thumbnailer import Thumbnailer
 from .wip_title import (
-    WIP_TITLE_SOFT_SOURCE,
     WIP_TITLE_SOURCE,
     apply_wip_image_tags,
-    matches_soft_wip_title,
     matches_wip_title,
     resolve_wip_tag_id,
 )
@@ -428,11 +426,19 @@ class Importer:
         return self._upsert_artist(name) if name else None
 
     def _post_for_sidecar(
-        self, source: Path, artist: Artist | None
+        self, source: Path, artist: Artist | None,
+        *, source_row: Source | None = None,
     ) -> Post | None:
         """If a sidecar sits next to `source`, ensure its Source+Post
         exist (idempotent) and return the Post — so attachments can link
-        to the same Post the per-member _apply_sidecar will reuse."""
+        to the same Post the per-member _apply_sidecar will reuse.
+
+        `source_row` is the subscription being downloaded, when there is one,
+        and wins over the (artist, platform) lookup — as it does in
+        `upsert_post_record`. The lookup takes the artist's FIRST source on the
+        platform, which is right only while an artist has one: a Discord artist
+        has one per channel, and every non-image file from a later channel was
+        filed under the first as an undated second post (#4435)."""
         sc = find_sidecar(source)
         if sc is None or artist is None:
             return None
@@ -444,10 +450,13 @@ class Importer:
             log.warning("sidecar parse failed for %s: %s", sc, exc)
             return None
         sd = parse_sidecar(data)
-        platform = sd.platform or "unknown"
-        src = self._lookup_source_for_sidecar(
-            artist_id=artist.id, platform=platform,
-        )
+        if source_row is not None:
+            src = source_row
+        else:
+            platform = sd.platform or "unknown"
+            src = self._lookup_source_for_sidecar(
+                artist_id=artist.id, platform=platform,
+            )
         epid = sd.external_post_id or sc.stem
         return self._find_or_create_post(
             source_id=src.id if src else None,
@@ -545,7 +554,7 @@ class Importer:
             # nothing silently vanishes, matching extract_archive's
             # fail-soft contract.
             artist_use = artist if artist is not None else self._resolve_artist(source)
-            post = self._post_for_sidecar(source, artist_use)
+            post = self._post_for_sidecar(source, artist_use, source_row=source_row)
             self._capture_attachment(
                 source, post=post, artist=artist_use, resolved=True,
             )
@@ -554,7 +563,7 @@ class Importer:
             return ImportResult(status="attached", error=reason)
 
         artist_use = artist if artist is not None else self._resolve_artist(source)
-        post = self._post_for_sidecar(source, artist_use)
+        post = self._post_for_sidecar(source, artist_use, source_row=source_row)
         member_ids: list[int] = []
         # Every member image touched (new + superseded + deduped), so the
         # from_attachment_id stamp below covers files that already existed in the
@@ -1040,9 +1049,7 @@ class Importer:
         removal sticks. The existing catalogue is covered separately by the
         operator-triggered backfill sweep. Gated by the settings toggle, and
         best-effort: any failure is logged, never allowed to fail the import."""
-        hard_on = self.settings.wip_title_tagging_enabled
-        soft_on = self.settings.wip_soft_title_tagging_enabled
-        if not (hard_on or soft_on):
+        if not self.settings.wip_title_tagging_enabled:
             return
         if record.primary_post_id is None:
             return
@@ -1050,21 +1057,14 @@ class Importer:
             title = self.session.execute(
                 select(Post.post_title).where(Post.id == record.primary_post_id)
             ).scalar_one_or_none()
-            # HARD tier ("WIP"/"work in progress") wins — higher precision, and it
-            # trains the head; SOFT (sketch/doodle, #1474) is the provisional fallback
-            # that never trains (source wip_title_soft).
-            if hard_on and matches_wip_title(title):
-                source = WIP_TITLE_SOURCE
-            elif soft_on and matches_soft_wip_title(title):
-                source = WIP_TITLE_SOFT_SOURCE
-            else:
+            if not matches_wip_title(title):
                 return
             if self._wip_tag_id is _UNSET:
                 self._wip_tag_id = resolve_wip_tag_id(self.session)
             if self._wip_tag_id is None:
                 return
             apply_wip_image_tags(
-                self.session, [record.id], self._wip_tag_id, source=source
+                self.session, [record.id], self._wip_tag_id, source=WIP_TITLE_SOURCE
             )
         except Exception as exc:  # noqa: BLE001 — a tag must never fail an import
             log.warning(
@@ -1141,9 +1141,51 @@ class Importer:
         if post.artist_id is None:
             post.artist_id = artist.id
         self._apply_post_fields(post, sd)
+        self._redate_post_images(post)
         self.session.commit()
         return True
 
+    def _redate_post_images(self, post: Post) -> None:
+        """Carry a post's date onto the images already linked to it (#4431).
+
+        The native ingesters import a post's media BEFORE its record: the
+        per-media sidecar holds only the image identity (post-first, #856), and
+        the date arrives with `_post.json`. So `_attach_provenance` links each
+        image to a post that has no date yet, and the image keeps its download
+        time. This runs when the record lands, and applies the same two rules
+        `_attach_provenance` applies: `effective_date` is the PRIMARY post's
+        date, and `earliest_post_date` is the earliest date across every post
+        the image is linked to. Only rows that differ are written."""
+        if post.post_date is None:
+            return
+        self.session.flush()
+        self.session.execute(
+            update(ImageRecord)
+            .where(ImageRecord.primary_post_id == post.id)
+            .where(ImageRecord.effective_date.is_distinct_from(post.post_date))
+            .values(effective_date=post.post_date)
+            .execution_options(synchronize_session=False)
+        )
+        linked = select(ImageProvenance.image_record_id).where(
+            ImageProvenance.post_id == post.id
+        )
+        earliest = (
+            select(func.min(Post.post_date))
+            .select_from(ImageProvenance)
+            .join(Post, Post.id == ImageProvenance.post_id)
+            .where(ImageProvenance.image_record_id == ImageRecord.id)
+            .where(Post.post_date.is_not(None))
+            .correlate(ImageRecord)
+            .scalar_subquery()
+        )
+        self.session.execute(
+            update(ImageRecord)
+            .where(ImageRecord.id.in_(linked))
+            .where(ImageRecord.earliest_post_date.is_distinct_from(earliest))
+            .values(earliest_post_date=earliest)
+            .execution_options(synchronize_session=False)
+        )
+
     def attach_in_place(
         self,
         path: Path,
@@ -1187,7 +1229,10 @@ class Importer:
                 path, artist=artist, source_row=source,
             )
         if not is_supported(path):
-            post = self._post_for_sidecar(path, artist) if artist else None
+            post = (
+                self._post_for_sidecar(path, artist, source_row=source)
+                if artist else None
+            )
             return self._capture_attachment(
                 path, post=post, artist=artist, resolved=True,
             )

backend/app/services/ingest_core.py

@@ -289,6 +289,11 @@ class Ingester:
         # Media handed to phase 3 for import. Marked seen by phase 3 once the
         # import has run (`mark_seen_after_import`), not here — see there.
         fetched: list[tuple[str, str]] = []
+        # Post-record keys written this walk. Marked with the media, after
+        # phase 3 has upserted the records — marking them at write time left a
+        # walk killed before phase 3 with posts the ledger calls recorded that
+        # the database never dated, and no later tick walks back to them (#4436).
+        recorded: list[tuple[str, str]] = []
         downloaded = 0
         errors = 0
         quarantined = 0
@@ -342,7 +347,9 @@ class Ingester:
                 written_paths=written,
                 post_record_paths=list(post_records),
                 relink_source_paths=list(relink),
-                mark_seen_after_import=lambda: self._mark_seen(source_id, fetched),
+                mark_seen_after_import=lambda: self._mark_seen(
+                    source_id, fetched + recorded,
+                ),
                 stdout="\n".join(log_lines),
                 stderr="",
                 return_code=return_code,
@@ -511,7 +518,7 @@ class Ingester:
                                     posts_with_body += 1
                             if rec.path is not None:
                                 post_records.append(str(rec.path))
-                                self._mark_seen(source_id, [(pkey, ppid)])
+                                recorded.append((pkey, ppid))
                             # Per-post handling line in the run stdout (the existing
                             # "Raw stdout" panel) — the downloader already read the
                             # post; we only format its outcome here. post_type beside

backend/app/services/ml/heads.py

@@ -97,8 +97,8 @@ def _sigmoid(z, np):
 
 def _conflict_scores(Xn, Wc, bc, np):
     """The presentation conflict signal (#141): per row, the MAX content-head
-    probability and WHICH head produced it. Shared by the system-tag sweep's guard-2
-    and the soft-wip audit — both ask "does this ALSO look like real content?"."""
+    probability and WHICH head produced it — the system-tag sweep's guard-2 asks
+    "does this ALSO look like real content?"."""
     cprobs = _sigmoid(Xn @ Wc.T + bc, np)
     return cprobs.max(axis=1), cprobs.argmax(axis=1)
 
@@ -106,10 +106,9 @@ def _conflict_scores(Xn, Wc, bc, np):
 def _insert_presentation_review(
     session, *, image_record_id, tag_id, conflict_tag_id, conflict_score, mode,
 ):
-    """Single-source the ring-loud PresentationReview row shape so the two writers
-    (system-tag sweep guard-2 + soft-wip audit) can't drift on columns or `mode` —
-    they share the (image_record_id, tag_id) composite PK, so a divergent `mode`
-    would be a silent first-writer-wins bug."""
+    """Single-source the ring-loud PresentationReview row shape, so every writer of
+    the (image_record_id, tag_id) composite PK agrees on columns and `mode` — a
+    divergent `mode` would be a silent first-writer-wins bug."""
     session.execute(
         pg_insert(PresentationReview)
         .values(
@@ -963,68 +962,6 @@ def system_tag_auto_apply_sweep(
     }
 
 
-def soft_wip_conflict_audit(session: Session, dry_run: bool = False) -> dict:
-    """Ring-loud audit for the SOFT WIP-title cohort (#1474). Images auto-tagged
-    `wip` from a low-precision sketch/doodle title (source='wip_title_soft') that ALSO
-    score >= the process conflict threshold on a content head are probably FINISHED
-    art mis-tagged as process — flag them (PresentationReview, mode='process') so the
-    review strip surfaces them ("also looks like <X>", Keep tag / Remove tag). Does
-    NOT remove the tag; the operator decides. No-op when there are no content heads.
-    numpy-only. Returns {n_scanned, n_flagged}."""
-    import numpy as np
-
-    from ..wip_title import WIP_TITLE_SOFT_SOURCE, resolve_wip_tag_id
-
-    settings = _settings(session)
-    ver = settings.embedder_model_version
-    conflict_thr = float(settings.process_conflict_threshold)
-    conf = _conflict_heads(session, ver)
-    wip_id = resolve_wip_tag_id(session)
-    if not conf or wip_id is None:
-        return {"n_scanned": 0, "n_flagged": 0}
-    Wc = np.vstack([np.asarray(r.weights, dtype=np.float32) for r in conf])
-    bc = np.asarray([r.bias for r in conf], dtype=np.float32)
-    conf_tag_ids = [r.tag_id for r in conf]
-
-    soft_ids = [iid for (iid,) in session.execute(
-        select(image_tag.c.image_record_id)
-        .where(image_tag.c.tag_id == wip_id)
-        .where(image_tag.c.source == WIP_TITLE_SOFT_SOURCE)
-    )]
-    # Skip images already flagged for this tag (idempotent re-runs).
-    flagged = {iid for (iid,) in session.execute(
-        select(PresentationReview.image_record_id)
-        .where(PresentationReview.tag_id == wip_id)
-    )}
-    soft_ids = [i for i in soft_ids if i not in flagged]
-
-    n_flagged = 0
-    scanned = 0
-    for start in range(0, len(soft_ids), _AUTO_APPLY_CHUNK):
-        chunk = soft_ids[start:start + _AUTO_APPLY_CHUNK]
-        emb = _load_embeddings(session, chunk)
-        cids = [i for i in chunk if i in emb]
-        if not cids:
-            continue
-        scanned += len(cids)
-        Xn = _l2norm(np.vstack([emb[i] for i in cids]).astype(np.float32), np)
-        max_c, arg_c = _conflict_scores(Xn, Wc, bc, np)
-        for k in range(len(cids)):
-            if float(max_c[k]) >= conflict_thr:
-                n_flagged += 1
-                if not dry_run:
-                    _insert_presentation_review(
-                        session,
-                        image_record_id=cids[k], tag_id=wip_id,
-                        conflict_tag_id=conf_tag_ids[int(arg_c[k])],
-                        conflict_score=float(max_c[k]),
-                        mode="process",
-                    )
-        if not dry_run:
-            session.commit()
-    return {"n_scanned": scanned, "n_flagged": n_flagged}
-
-
 def retract_auto_applied_heads(session: Session) -> int:
     """Soft auto-apply (milestone 139): re-score every standing source='head_auto'
     tag against its CURRENT head and REMOVE the ones now BELOW the head's

backend/app/services/ml/training_data.py

@@ -32,11 +32,8 @@ from ...models.tag import image_tag
 # `process_auto` (#1464): wip/editor screenshot applied by the process sweep are
 # ALSO provisional — the head must learn only from title (`wip_title`) + manual
 # labels, never its own auto-applied output, or it would runaway (operator 2026-07-12).
-# `wip_title_soft` (#1474): the soft title tier (sketch/doodle) is LOW-precision, so
-# it's provisional too — a finished piece titled "sketch" must not train the wip head.
 _AUTO_SOURCES = (
     "head_auto", "ccip_auto", "ml_auto", "presentation_auto", "process_auto",
-    "wip_title_soft",
 )
 
 

backend/app/services/platform_lock.py

@@ -60,3 +60,22 @@ def platform_lock(platform: str, *, ttl_seconds: int):
     except redis.RedisError as exc:  # pragma: no cover - broker outage
         log.warning("platform_lock unavailable for %s: %s", platform, exc)
         return None
+
+
+def release_all_platform_locks() -> int:
+    """Drop every serialized platform's lock. Returns how many were held.
+
+    Only for the download lane's boot (#4433). A worker that restarts mid-walk
+    is SIGKILLed past its stop grace, so its `finally` never releases the lock,
+    and the TTL keeps every other source on that platform bouncing for up to
+    27 minutes after the new worker is ready. At boot no walk of ours can be
+    running, so a held lock names a dead one. Assumes one download consumer —
+    the only shape FC deploys; a second replica booting would free a live
+    walk's lock (not corrupt it: the walk runs on, a second walk may overlap it).
+    """
+    try:
+        client = _redis()
+        return int(client.delete(*(f"{_LOCK_PREFIX}{p}" for p in SERIALIZED_PLATFORMS)))
+    except redis.RedisError as exc:  # pragma: no cover - broker outage
+        log.warning("could not release platform locks at boot: %s", exc)
+        return 0

backend/app/services/post_feed_service.py

@@ -479,6 +479,10 @@ class PostFeedService:
             # the UI uses this to explain why a post it linked to is not in the
             # stream.
             "absorbed_by_post_id": post.absorbed_by_post_id,
+            # #4481. The Discord channel a message was posted in: both the native
+            # post record and gallery-dl's sidecars carry it as `channel`. None
+            # on every other platform, and on a Discord post that never said.
+            "channel": _discord_channel(post, source),
             "artist": {"id": artist.id, "name": artist.name, "slug": artist.slug},
             "source": (
                 {"id": source.id, "platform": source.platform}
@@ -488,3 +492,13 @@ class PostFeedService:
             "thumbnails_more": thumbs_entry["more"],
             "attachments": atts_map.get(post.id, []),
         }
+
+
+def _discord_channel(post: Post, source: Source | None) -> str | None:
+    if source is None or source.platform != "discord":
+        return None
+    raw = post.raw_metadata if isinstance(post.raw_metadata, dict) else {}
+    channel = raw.get("channel")
+    if not isinstance(channel, str):
+        return None
+    return channel.strip() or None

backend/app/services/post_record_repair.py

@@ -0,0 +1,86 @@
+"""Date the posts whose record reached the disk but never the database (#4436).
+
+A native walk writes each post's record (`_post.json`, or Discord's
+`<day>_<message id>_post.json`) as it goes, and phase 3 upserts those records
+after the walk — which is when the post, and through it its images, get their
+date. Until #4436 the walk marked a record's post key seen at write time, so a
+walk killed before phase 3 (a restart, a stall) left the post undated with the
+ledger saying it was done, and no later tick walked back that far to fix it.
+
+The record files are still on disk. This finds each undated native post's
+record under its artist's folder and upserts it with the post's OWN source —
+never the (artist, platform) lookup, which picks the artist's first source and
+would misfile a Discord channel's post (#4435). Idempotent: a post that is
+already dated is never looked at, and upserting a record twice changes nothing.
+"""
+from __future__ import annotations
+
+import json
+import logging
+from collections import defaultdict
+from pathlib import Path
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from ..models import Artist, Post, Source
+from ..utils.sidecar import parse_sidecar
+from .download_backends import NATIVE_INGESTER_PLATFORMS
+
+log = logging.getLogger(__name__)
+
+
+def _is_record(path: Path) -> bool:
+    return path.name == "_post.json" or path.name.endswith("_post.json")
+
+
+def _record_id(path: Path) -> str | None:
+    try:
+        data = json.loads(path.read_text("utf-8"))
+    except (OSError, ValueError):
+        return None
+    if not isinstance(data, dict):
+        return None
+    return parse_sidecar(data).external_post_id
+
+
+def date_posts_from_records(session: Session, importer, images_root: Path) -> dict:
+    """Upsert the on-disk record of every undated native post. Returns counts."""
+    rows = session.execute(
+        select(Post.external_post_id, Post.source_id, Post.artist_id, Source.platform)
+        .join(Source, Source.id == Post.source_id)
+        .where(
+            Post.post_date.is_(None),
+            Post.synthesized_by.is_(None),
+            Source.platform.in_(NATIVE_INGESTER_PLATFORMS),
+        )
+    ).all()
+    wanted: dict[tuple[int, str], dict[str, int]] = defaultdict(dict)
+    for epid, source_id, artist_id, platform in rows:
+        wanted[(artist_id, platform)][epid] = source_id
+
+    summary = {"undated": len(rows), "dated": 0, "no_record": 0}
+    for (artist_id, platform), by_epid in wanted.items():
+        artist = session.get(Artist, artist_id)
+        root = Path(images_root) / artist.slug / platform if artist else None
+        if root is None or not root.is_dir():
+            summary["no_record"] += len(by_epid)
+            continue
+        found = 0
+        for record in root.rglob("*post.json"):
+            if not _is_record(record):
+                continue
+            epid = _record_id(record)
+            source_id = by_epid.pop(epid, None) if epid else None
+            if source_id is None:
+                continue
+            source = session.get(Source, source_id)
+            if importer.upsert_post_record(record, artist=artist, source=source):
+                found += 1
+            if not by_epid:
+                break
+        summary["dated"] += found
+        summary["no_record"] += len(by_epid)
+    if summary["undated"]:
+        log.info("date_posts_from_records: %s", summary)
+    return summary

backend/app/services/source_service.py

@@ -68,6 +68,9 @@ class SourceRecord:
     artist_slug: str
     platform: str
     url: str
+    # alembic 0115: the name the platform gives it, where the URL is opaque
+    # (a Discord link is two ids). None until a walk has read it.
+    display_name: str | None
     enabled: bool
     config_overrides: dict | None
     last_checked_at: str | None
@@ -110,6 +113,7 @@ class SourceRecord:
             "artist_slug": self.artist_slug,
             "platform": self.platform,
             "url": self.url,
+            "display_name": self.display_name,
             "enabled": self.enabled,
             "config_overrides": self.config_overrides,
             "last_checked_at": self.last_checked_at,
@@ -301,6 +305,7 @@ class SourceService:
             artist_slug=artist.slug,
             platform=source.platform,
             url=source.url,
+            display_name=source.display_name,
             enabled=source.enabled,
             config_overrides=source.config_overrides,
             last_checked_at=source.last_checked_at.isoformat() if source.last_checked_at else None,

backend/app/services/wip_title.py

@@ -27,13 +27,10 @@ from .image_tag_apply import insert_image_tags
 
 # image_tag.source stamped on title-heuristic WIP tags — distinct from the other
 # apply sources so provenance stays legible and a future undo can target only these.
-# HARD tier ("WIP"/"work in progress") is high-precision → trains the wip head.
+# Only the artist's own "WIP"/"work in progress" label counts — high-precision, so it
+# trains the wip head. A sketch/doodle/scribble tier (#1474) was retired in milestone
+# 430: a "sketch" is usually finished art, and its 6k tags flooded the review strip.
 WIP_TITLE_SOURCE = "wip_title"
-# SOFT tier (sketch/doodle/scribble, #1474) is LOWER-precision — a finished "sketch"
-# is often not WIP. This source is PROVISIONAL (in training_data._AUTO_SOURCES) so it
-# NEVER trains the wip head; a soft-tagged image that also looks like real content is
-# surfaced by the ring-loud audit for review.
-WIP_TITLE_SOFT_SOURCE = "wip_title_soft"
 
 # A standalone "WIP" / "W.I.P" token, or the phrase "work in progress"
 # (space/underscore/hyphen separated). The letter-boundary lookarounds are what
@@ -45,20 +42,10 @@ _WIP_RE = re.compile(
     re.IGNORECASE,
 )
 
-# Soft tier: sketch / doodle / scribble (+ plurals), letter-boundary anchored so
-# "sketchbook" / "kadoodle" don't trip it. Deliberately conservative — recall is
-# secondary because the soft source doesn't train the head and the ring-loud audit
-# catches false positives.
-_SOFT_WIP_RE = re.compile(
-    r"(?<![A-Za-z])(?:sketch|sketches|doodle|doodles|scribble|scribbles)(?![A-Za-z])",
-    re.IGNORECASE,
-)
-
-# Coarse SQL prefilters for the backfill sweep — narrow the post scan to rows that
+# Coarse SQL prefilter for the backfill sweep — narrows the post scan to rows that
 # COULD match before the precise regex confirms. Case-insensitive ILIKE patterns.
-# Each MUST stay a SUPERSET of its regex or the sweep would silently miss posts.
+# It MUST stay a SUPERSET of the regex or the sweep would silently miss posts.
 WIP_TITLE_SQL_PREFILTER = ("%wip%", "%work%progress%")
-SOFT_WIP_TITLE_SQL_PREFILTER = ("%sketch%", "%doodle%", "%scribble%")
 
 # Chunk bulk inserts so a large sweep can't blow past psycopg's 65535-parameter
 # ceiling (3 params/row → ~21k rows max; 5k stays comfortably under).
@@ -66,19 +53,12 @@ _INSERT_CHUNK = 5000
 
 
 def matches_wip_title(title: str | None) -> bool:
-    """True when a post title explicitly marks it work-in-progress (HARD tier)."""
+    """True when a post title explicitly marks it work-in-progress."""
     if not title:
         return False
     return _WIP_RE.search(title) is not None
 
 
-def matches_soft_wip_title(title: str | None) -> bool:
-    """True when a title carries a SOFT WIP cue (sketch/doodle/scribble, #1474)."""
-    if not title:
-        return False
-    return _SOFT_WIP_RE.search(title) is not None
-
-
 def resolve_wip_tag_id(session: Session) -> int | None:
     """The seeded ``wip`` system tag's id (migration 0075), or None if absent."""
     return session.execute(

backend/app/tasks/maintenance.py

@@ -137,7 +137,13 @@ IMPORT_BATCH_KEEP_DAYS = 30
 #   (the import queue itself stays at the 5-min default for single
 #   files); time_limit=2100.
 QUEUE_STUCK_THRESHOLD_MINUTES: dict[str, int] = {
-    "ml": 25,
+    # ml: the scheduled auto-apply sweeps and refresh_character_prototypes run
+    # to a 35-min hard limit (2100s); 25 swept them mid-run (#4432). The two
+    # 65-min jobs have their own entries below.
+    "ml": 40,
+    # import: import_media_file's hard limit is 6 min (360s), one past the
+    # 5-min default this queue fell to (#4432).
+    "import": 10,
     # download_source legitimately walks 5-25 min (Patreon/gallery-dl
     # deep creators); its hard time_limit is DOWNLOAD_HARD_TIME_LIMIT
     # (1500s = 25m). The 5-min default flagged healthy in-flight walks as
@@ -154,6 +160,12 @@ QUEUE_STUCK_THRESHOLD_MINUTES: dict[str, int] = {
     # overrides below cover the outliers (backups, library audit).
     "maintenance": 75,
     "scan": 75,
+    # The long lane (#4432). Until TaskRun.queue asked the router, nothing was
+    # recorded here: these runs read as `maintenance` (75) or, for
+    # translation, `default` (5 — which failed healthy 35-min runs). The
+    # longest task without its own entry below is the admin family at a
+    # 40-min hard limit; 45 = 40 + 5.
+    "maintenance_long": 45,
 }
 TASK_STUCK_THRESHOLD_MINUTES: dict[str, int] = {
     "backend.app.tasks.import_file.import_archive_file": 40,
@@ -179,6 +191,10 @@ TASK_STUCK_THRESHOLD_MINUTES: dict[str, int] = {
     # external-fetch entry above — without an override a healthy in-flight walk
     # is swept 'RecoverySweep' at the bare 5-min default. 30 = 25 + 5.
     "backend.app.tasks.admin.reclaim_orphaned_attachments_task": 30,
+    # Head training and the manual head apply run to 65 min (3900s) — past the
+    # ml queue's threshold (#4432). 70 = 65 + 5.
+    "backend.app.tasks.ml.train_heads": 70,
+    "backend.app.tasks.ml.apply_head_tags": 70,
 }
 
 
@@ -715,6 +731,32 @@ def recover_stalled_download_events() -> int:
         return events_recovered
 
 
+@celery.task(
+    name="backend.app.tasks.maintenance.date_posts_from_records",
+    soft_time_limit=1500,
+    time_limit=1800,
+)
+def date_posts_from_records() -> dict:
+    """Date undated native posts from the records their walk left on disk
+    (#4436). Hourly and self-limiting: once every post is dated it is one
+    empty query."""
+    from ..services.importer import Importer
+    from ..services.post_record_repair import date_posts_from_records as _repair
+    from ..services.thumbnailer import Thumbnailer
+
+    images_root = IMAGES_ROOT
+    SessionLocal = _sync_session_factory()
+    with SessionLocal() as session:
+        importer = Importer(
+            session=session,
+            images_root=images_root,
+            import_root=images_root,
+            thumbnailer=Thumbnailer(images_root=images_root),
+            settings=ImportSettings.load_sync(session),
+        )
+        return _repair(session, importer, images_root)
+
+
 @celery.task(name="backend.app.tasks.maintenance.recover_stalled_backup_runs")
 def recover_stalled_backup_runs() -> int:
     """Flip BackupRun rows stuck in running/restoring past the hard limit
@@ -1041,8 +1083,7 @@ def cleanup_old_download_events() -> int:
 
 def _backfill_wip_tier(session, tag_id, prefilter, matcher, source) -> int:
     """One keyset-paginated pass over posts whose title matches a WIP tier, applying
-    `tag_id` (stamped `source`) to their images. Shared by the hard + soft tiers
-    (#1458 / #1474). Coarse `prefilter` (ILIKE superset) narrows the scan; the precise
+    `tag_id` (stamped `source`) to their images (#1458). Coarse `prefilter` (ILIKE superset) narrows the scan; the precise
     `matcher` confirms. Idempotent-additive (ON CONFLICT DO NOTHING). Returns the row
     count newly applied."""
     from ..models import Post
@@ -1082,26 +1123,17 @@ def _backfill_wip_tier(session, tag_id, prefilter, matcher, source) -> int:
 )
 def backfill_wip_title_tags() -> int:
     """Scan EXISTING posts for WIP titles and apply the `wip` system tag to their
-    images — the operator-triggered back-catalogue catch-up (task #1458 hard tier +
-    #1474 soft tier). New imports are tagged live by the importer; this covers the
-    existing library.
-
-    HARD tier ("WIP"/"work in progress") always runs (the operator triggered the
-    scan); the SOFT tier (sketch/doodle, provisional source) runs only when
-    wip_soft_title_tagging_enabled, AFTER hard so a title matching both keeps the
-    trained hard tag (ON CONFLICT DO NOTHING). Keyset-paginated, restart-safe.
+    images — the operator-triggered back-catalogue catch-up (task #1458). New
+    imports are tagged live by the importer; this covers the existing library.
+    Keyset-paginated, restart-safe.
 
     Deliberately NOT scheduled as a beat: a periodic re-run would re-apply to matching
     posts and silently undo a manual WIP removal, so it stays an explicit operator
     action (Settings → "Scan existing posts for WIP titles"). Returns rows applied.
     """
-    from ..models import ImportSettings
     from ..services.wip_title import (
-        SOFT_WIP_TITLE_SQL_PREFILTER,
-        WIP_TITLE_SOFT_SOURCE,
         WIP_TITLE_SOURCE,
         WIP_TITLE_SQL_PREFILTER,
-        matches_soft_wip_title,
         matches_wip_title,
         resolve_wip_tag_id,
     )
@@ -1114,16 +1146,10 @@ def backfill_wip_title_tags() -> int:
                 "backfill_wip_title_tags: no `wip` system tag present; nothing to do"
             )
             return 0
-        settings = ImportSettings.load_sync(session)
         applied = _backfill_wip_tier(
             session, tag_id, WIP_TITLE_SQL_PREFILTER, matches_wip_title,
             WIP_TITLE_SOURCE,
         )
-        if settings.wip_soft_title_tagging_enabled:
-            applied += _backfill_wip_tier(
-                session, tag_id, SOFT_WIP_TITLE_SQL_PREFILTER, matches_soft_wip_title,
-                WIP_TITLE_SOFT_SOURCE,
-            )
     if applied:
         log.info("backfill_wip_title_tags: applied wip to %d image(s)", applied)
     return applied

backend/app/tasks/ml.py

@@ -620,24 +620,6 @@ def scheduled_process_auto_apply() -> str:
     return f"applied={result['n_applied']} flagged={result['n_flagged']}"
 
 
-@celery.task(
-    name="backend.app.tasks.ml.scheduled_soft_wip_conflict_audit",
-    soft_time_limit=1800, time_limit=2100,
-)
-def scheduled_soft_wip_conflict_audit() -> str:
-    """Ring-loud audit over the SOFT WIP-title cohort (#1474) — flag sketch/doodle
-    auto-tags that ALSO look like real content for review. No-op when there are no
-    content heads; idempotent (already-flagged images skipped). Runs regardless of
-    the process-sweep toggle, since soft-title tags come from the importer, not that
-    sweep. Wall-clock bounded by the task time limits."""
-    from ..services.ml.heads import soft_wip_conflict_audit
-
-    SessionLocal = _sync_session_factory()
-    with SessionLocal() as session:
-        result = soft_wip_conflict_audit(session)
-    return f"scanned={result['n_scanned']} flagged={result['n_flagged']}"
-
-
 @celery.task(name="backend.app.tasks.ml.prune_presentation_reviews")
 def prune_presentation_reviews() -> str:
     """Retention (rule 89): drop RESOLVED presentation-review flags older than 30

ci-requirements.md

@@ -180,7 +180,10 @@ per `docs/process.md`'s "add deps to the image when used by >1 project".
     BUILD_REF` that every checkout in the file takes, rather than per job —
     otherwise `sign-extension` would derive dev's extension version while
     `build-web` bundled main's, and the release download would 404 on a version
-    that exists perfectly well. Every job then ASSERTS its checkout is `main`
+    that exists perfectly well. On every other trigger `BUILD_REF` is the
+    triggering COMMIT (`github.sha`), not the branch: a branch is re-resolved
+    per job, so a push landing mid-run used to move the publishing jobs onto a
+    commit the run's lanes never tested (run 7499, #4427). Every job then ASSERTS its checkout is `main`
     before doing anything, because `env` inside `with:` is not a context this
     runner is known to evaluate — if it silently resolved to empty, checkout
     would fall back to the triggering ref and the refresh would publish dev's

extension/background/background.js

@@ -88,7 +88,12 @@ async function checkForUpdateInfo() {
     currentVersion,
     latestVersion,
     channel,
-    xpiUrl: info && info.latest_url ? `${base}${info.latest_url}` : null,
+    // Where the Update button sends the operator: FC's own install card, not
+    // the XPI. Firefox refuses an add-on install whose navigation an extension
+    // started (tabs.create on the .xpi dies with NS_ERROR_FAILURE — operator-
+    // flagged 2026-09-25); it accepts one from a user click on a web page,
+    // which is exactly what the card's Install button is.
+    installPageUrl: base ? `${base}/subscriptions?tab=settings` : null,
   };
 }
 
@@ -271,11 +276,26 @@ browser.runtime.onMessage.addListener(async (msg) => {
           artistId: msg.artistId ?? null,
           artistName: msg.artistName ?? null,
           usePlatformName: msg.usePlatformName === true,
+          discordAuthors: Array.isArray(msg.discordAuthors) ? msg.discordAuthors : null,
         });
       } catch (e) {
         return { error: e.message };
       }
 
+    case 'DISCORD_POSTERS':
+      try {
+        return await api.getDiscordPosters(msg.url);
+      } catch (e) {
+        return { error: e.message };
+      }
+
+    case 'SET_DISCORD_POSTERS':
+      try {
+        return await api.setDiscordPosters(msg.url, msg.authors || []);
+      } catch (e) {
+        return { error: e.message };
+      }
+
     case 'SEARCH_ARTISTS':
       try {
         return { artists: await api.searchArtists(msg.q || '') };

extension/content/content-script.css

@@ -100,3 +100,7 @@
 /* The panel's own [hidden] — its rows are display:flex, which beats the UA's. */
 .fc-panel [hidden] { display: none !important; }
 .fc-panel__rename { margin-top: 8px; font-size: 13px; }
+/* Poster picker (#4488): who posts in the channel, the likely creator ticked. */
+.fc-panel__posters { max-height: 220px; overflow-y: auto; }
+.fc-panel__poster { flex-wrap: wrap; }
+.fc-panel__poster-meta { flex-basis: 100%; padding-left: 21px; font-size: 11px; color: rgb(170, 166, 156); }

extension/content/content-script.js

@@ -81,6 +81,13 @@
     const probe = currentProbe;
 
     if (probe?.state === 'source_match') {
+      // A followed Discord channel opens its poster list (#4488); the artist
+      // page is one click further, in that panel.
+      if (probe.platform === 'discord' && probe.discord?.channel_id) {
+        if (document.getElementById('fc-add-panel')) closePanel();
+        else openPostersPanel(btn, probe);
+        return;
+      }
       await openArtist(btn, probe.artist?.slug);
       return;
     }
@@ -158,6 +165,120 @@
     document.getElementById('fc-add-panel')?.remove();
   }
 
+  // ---- Poster picker (#4488) ----
+  // Who posted in this channel lately, read by FabledCurator with its Discord
+  // token, the creator the server is named for (or owned by) ticked. The
+  // source keeps their ids: a username can change on a whim, an id can't, so
+  // the list never quietly stops matching. Names are other people's text —
+  // createElement only.
+
+  function posterSection() {
+    const list = el('div', { class: 'fc-panel__posters' }, [
+      el('div', { class: 'fc-panel__hint', text: 'Reading who posts here…' }),
+    ]);
+    const node = el('div', {}, [
+      el('div', { class: 'fc-panel__label', text: 'Only posts by' }),
+      list,
+    ]);
+    const state = { data: null, picked: new Set() };
+
+    function render() {
+      const posters = withSelected(state.data);
+      if (!posters.length) {
+        list.replaceChildren(el('div', { class: 'fc-panel__hint', text: 'No one has posted here lately.' }));
+        return;
+      }
+      const rows = posters.map((p) => {
+        const id = String(p.id);
+        const box = el('input', { type: 'checkbox', checked: state.picked.has(id) });
+        box.addEventListener('change', () => {
+          if (box.checked) state.picked.add(id);
+          else state.picked.delete(id);
+          hint.textContent = pickHint();
+        });
+        const bits = [`${p.images} image${p.images === 1 ? '' : 's'}`, `${p.messages} message${p.messages === 1 ? '' : 's'}`];
+        if (p.reasons?.length) bits.unshift(p.reasons.join(', '));
+        return el('label', { class: 'fc-panel__radio fc-panel__poster' }, [
+          box,
+          el('span', { text: posterLabel(p) }),
+          el('span', { class: 'fc-panel__poster-meta', text: bits.join(' · ') }),
+        ]);
+      });
+      const hint = el('div', { class: 'fc-panel__hint', text: pickHint() });
+      list.replaceChildren(...rows, hint);
+    }
+
+    function pickHint() {
+      return state.picked.size
+        ? 'Only the ticked people’s posts are taken.'
+        : 'Nothing ticked: everyone’s posts are taken.';
+    }
+
+    async function load() {
+      let r;
+      try {
+        r = await browser.runtime.sendMessage({ type: 'DISCORD_POSTERS', url: window.location.href });
+      } catch (e) {
+        r = { error: e.message };
+      }
+      if (r?.error) {
+        list.replaceChildren(el('div', { class: 'fc-panel__hint', text: `Couldn’t list posters — ${r.error}` }));
+        return;
+      }
+      state.data = r;
+      state.picked = initialPosterPick(r);
+      render();
+    }
+
+    // null until the list has loaded: an add made before then leaves the
+    // source's list as it is instead of clearing it.
+    const request = () => (state.data ? postersRequest(state.data.posters, state.picked) : null);
+    return { node, load, request };
+  }
+
+  function openPostersPanel(btn, probe) {
+    closePanel();
+    const d = probe.discord || {};
+    const posters = posterSection();
+    const saveBtn = el('button', { class: 'fc-panel__btn fc-panel__btn--primary', text: 'Save' });
+    const artistBtn = el('button', { class: 'fc-panel__btn', text: `Open ${probe.artist?.name || 'artist'}` });
+    const cancelBtn = el('button', { class: 'fc-panel__btn', text: 'Close' });
+    const panel = el('div', { id: 'fc-add-panel', class: 'fc-panel' }, [
+      el('div', { class: 'fc-panel__title', text: 'Discord source' }),
+      el('div', { class: 'fc-panel__sub', text: d.channel_id ? channelLabel(d) : serverLabel(d) }),
+      posters.node,
+      el('div', { class: 'fc-panel__actions' }, [artistBtn, cancelBtn, saveBtn]),
+    ]);
+    panel.addEventListener('keydown', (e) => {
+      e.stopPropagation();
+      if (e.key === 'Escape') closePanel();
+    });
+    cancelBtn.addEventListener('click', closePanel);
+    artistBtn.addEventListener('click', () => { closePanel(); openArtist(btn, probe.artist?.slug); });
+    saveBtn.addEventListener('click', async () => {
+      const authors = posters.request();
+      if (!authors) return;
+      saveBtn.disabled = true;
+      try {
+        const r = await browser.runtime.sendMessage({
+          type: 'SET_DISCORD_POSTERS', url: window.location.href, authors,
+        });
+        if (r?.error) {
+          showToast(`Error: ${r.error}`, 'error');
+          return;
+        }
+        showToast(authors.length ? `Only posts by ${authors.map((a) => a.name || a.id).join(', ')}` : 'Taking everyone’s posts', 'success');
+        closePanel();
+      } catch (e) {
+        showToast(`Error: ${e.message}`, 'error');
+      } finally {
+        saveBtn.disabled = false;
+      }
+    });
+    document.body.appendChild(panel);
+    posters.load();
+  }
+
   async function openAddPanel(btn, probe) {
     closePanel();
     const platformName = PLATFORMS[probe.platform]?.name || probe.platform;
@@ -184,6 +305,8 @@
     const d = probe.discord || {};
     const discord = probe.platform === 'discord';
     const choice = panelDefaults(probe, window.location.href);
+    // #4488: on a channel page, pick whose posts the new source takes.
+    const posters = discord && d.channel_id ? posterSection() : null;
 
     const scopeRow = (value, label, disabled) => {
       const input = el('input', {
@@ -234,6 +357,7 @@
       el('div', { class: 'fc-panel__label', text: 'Artist' }),
       el('div', { class: 'fc-panel__combo' }, [nameInput, results]),
       renameRow,
+      ...(posters ? [posters.node] : []),
       hint,
       el('div', { class: 'fc-panel__actions' }, [cancelBtn, addBtn]),
     ]);
@@ -392,6 +516,8 @@
     addBtn.addEventListener('click', async () => {
       const req = addRequest(choice);
       if (!req) return;
+      const authors = posters?.request();
+      if (authors) req.discordAuthors = authors;
       const btn = document.getElementById('fc-add-source-btn');
       addBtn.disabled = true;
       const ok = await add(btn || addBtn, req);
@@ -402,6 +528,7 @@
     document.body.appendChild(panel);
     refresh();
     nameInput.focus();
+    posters?.load();
     nameInput.select();
     // Search what the field opens with — the server's name, usually — so an
     // artist it already matches is picked before the operator types anything.

extension/lib/api.js

@@ -106,8 +106,11 @@ class FabledCuratorAPI {
   // artist from the URL. A Discord channel always sends one.
   // usePlatformName: a Patreon source joining an existing artist renames it
   // to the Patreon display name (Patreon is canon; name only, never the slug).
-  quickAddSource(url, { artistId = null, artistName = null, usePlatformName = false } = {}) {
+  // discordAuthors ([{id, name}], #4488): a Discord source's poster list, set
+  // in the same step.
+  quickAddSource(url, { artistId = null, artistName = null, usePlatformName = false, discordAuthors = null } = {}) {
     const body = { url };
+    if (discordAuthors) body.discord_authors = discordAuthors;
     if (artistId != null) body.artist_id = artistId;
     else if (artistName) body.artist_name = artistName;
     if (usePlatformName) body.use_platform_name = true;
@@ -123,6 +126,15 @@ class FabledCuratorAPI {
     const qs = new URLSearchParams(params).toString();
     return this.request('GET', `/extension/probe?${qs}`);
   }
+  // #4488: who posts in the Discord channel `url` shows, lately, with the
+  // likely creator marked; and setting the list on the source that follows it.
+  getDiscordPosters(url) {
+    const qs = new URLSearchParams({ url }).toString();
+    return this.request('GET', `/extension/discord/posters?${qs}`);
+  }
+  setDiscordPosters(url, authors) {
+    return this.request('POST', '/extension/discord/posters', { url, authors });
+  }
   // Latest published extension version on this instance — drives the in-app
   // update prompt. Public endpoint (no key needed, but request() sends it
   // harmlessly). Returns {version, xpi_url, latest_url, sha256}.

extension/lib/chip.js

@@ -144,3 +144,49 @@ function inlineCompletion(typed, results) {
   if (!t) return null;
   return (results || []).find((a) => a.name.length > t.length && a.name.toLowerCase().startsWith(t)) || null;
 }
+
+// ---- Discord poster picker (#4488) ----
+// /api/extension/discord/posters lists who posted in the channel lately, with
+// the creator the server is named for (or owned by) marked `suggested`. The
+// picker ticks posters; the source keeps their ids, since a username can
+// change on a whim and an id can't.
+
+/** "Todding (@todding)" — the display name, then the handle when it differs. */
+function posterLabel(p) {
+  const shown = p?.global_name || p?.username || p?.id || '';
+  const handle = p?.username && p.username !== shown ? ` (@${p.username})` : '';
+  return `${shown}${handle}`;
+}
+
+/** What the picker starts with: the source's current list when it has one,
+ *  else the suggested creator(s). A set of ids. */
+function initialPosterPick(data) {
+  const current = (data?.selected || []).map(String);
+  if (current.length) return new Set(current);
+  return new Set((data?.posters || []).filter((p) => p.suggested).map((p) => String(p.id)));
+}
+
+/** The checklist's rows: who posted lately, then anyone already on the
+ *  source's list who hasn't — by the name they were picked under — so they
+ *  can still be unticked. */
+function withSelected(data) {
+  const posters = [...(data?.posters || [])];
+  const shown = new Set(posters.map((p) => String(p.id)));
+  const labels = data?.selected_labels || {};
+  for (const id of (data?.selected || []).map(String)) {
+    if (shown.has(id)) continue;
+    posters.push({ id, global_name: labels[id] || null, username: null,
+      messages: 0, images: 0, reasons: ['on the list, not posting lately'] });
+  }
+  return posters;
+}
+
+/** The picked posters as the API takes them: [{id, name}], in list order.
+ *  An id already on the source but no longer posting lately is kept. */
+function postersRequest(posters, picked) {
+  const byId = new Map((posters || []).map((p) => [String(p.id), p]));
+  return [...picked].map((id) => ({
+    id,
+    name: byId.has(id) ? (byId.get(id).global_name || byId.get(id).username || id) : null,
+  }));
+}

extension/popup/popup.js

@@ -76,7 +76,7 @@ function updateConnectionDot(connected) {
 async function checkForUpdate() {
   try {
     const r = await browser.runtime.sendMessage({ type: 'CHECK_UPDATE' });
-    if (r && r.updateAvailable && r.xpiUrl) showUpdateBanner(r);
+    if (r && r.updateAvailable && r.installPageUrl) showUpdateBanner(r);
   } catch { /* non-fatal */ }
 }
 
@@ -86,10 +86,14 @@ function showUpdateBanner(r) {
   // exactly as it did before the field existed.
   const channel = r.channel ? ` (${r.channel})` : '';
   document.getElementById('update-text').textContent =
-    `Update available${channel} — v${r.latestVersion} (installed v${r.currentVersion})`;
-  // Opening the signed XPI triggers Firefox's native install prompt.
+    `Update available${channel} — v${r.latestVersion} (installed v${r.currentVersion}). ` +
+    'Opens FabledCurator — click “Install Firefox extension” there.';
+  // Opens FC's install card rather than the XPI: Firefox only installs an
+  // add-on from a user click on a web page, never from a tab an extension
+  // opened on the .xpi itself.
   document.getElementById('update-btn').addEventListener('click', () => {
-    browser.tabs.create({ url: r.xpiUrl });
+    browser.tabs.create({ url: r.installPageUrl });
+    window.close();
   });
   document.getElementById('update-banner').classList.remove('hidden');
 }

extension/test/chip.spec.js

@@ -198,3 +198,46 @@ describe('Add panel on Patreon and SubscribeStar', () => {
     expect(c.artistName).toBe('Tamada')
   })
 })
+
+const { posterLabel, initialPosterPick, postersRequest, withSelected } = loadLib('chip.js', [
+  'posterLabel', 'initialPosterPick', 'postersRequest', 'withSelected',
+])
+
+describe('the poster checklist rows', () => {
+  it('adds someone on the list who has not posted lately, by their saved name', () => {
+    const rows = withSelected({
+      posters: [{ id: '7', username: 'todding', global_name: 'Todding' }],
+      selected: ['7', '42'],
+      selected_labels: { 42: 'Old Name' },
+    })
+    expect(rows.map((r) => r.id)).toEqual(['7', '42'])
+    expect(posterLabel(rows[1])).toBe('Old Name')
+    expect(rows[1].reasons).toEqual(['on the list, not posting lately'])
+  })
+})
+
+describe('the Discord poster picker (#4488)', () => {
+  const posters = [
+    { id: '7', username: 'todding', global_name: 'Todding', suggested: true },
+    { id: '8', username: 'jakeboii', global_name: 'Jake Boii', suggested: false },
+    { id: '9', username: 'plain', global_name: null, suggested: false },
+  ]
+
+  it('labels a poster by display name, then handle', () => {
+    expect(posterLabel(posters[0])).toBe('Todding (@todding)')
+    expect(posterLabel(posters[2])).toBe('plain')
+  })
+
+  it('starts from the source list when it has one, else the suggestion', () => {
+    expect([...initialPosterPick({ posters, selected: [] })]).toEqual(['7'])
+    expect([...initialPosterPick({ posters, selected: ['8'] })]).toEqual(['8'])
+    expect([...initialPosterPick({ posters: [] })]).toEqual([])
+  })
+
+  it('sends ids with the names they were picked under, keeping unknown ids', () => {
+    expect(postersRequest(posters, new Set(['7', '42']))).toEqual([
+      { id: '7', name: 'Todding' },
+      { id: '42', name: null },
+    ])
+  })
+})

frontend/src/components/cleanup/SingleColorAuditCard.vue

@@ -101,7 +101,7 @@ import MaintenanceTile from '../common/MaintenanceTile.vue'
 import { useCleanupStore } from '../../stores/cleanup.js'
 
 const store = useCleanupStore()
-const threshold = ref(0.95)
+const threshold = ref(0.995)
 const tolerance = ref(30)
 const audit = ref(null)
 const busy = ref(false)

frontend/src/components/gallery/HiddenReviewStrip.vue

@@ -2,14 +2,14 @@
   <!-- System-tag auto-applies (chrome hides / process WIP tags) that ALSO looked
        like real content — surfaced PROACTIVELY atop the gallery whenever there's
        something to review (NOT gated on the Show-hidden toggle, so misfires can't
-       go unnoticed), most-concerning first, with keep / remove (#141, #1464).
+       go unnoticed), most-concerning first (#141, #1464). Each card asks one
+       question — is this image a <tag>? — and its buttons answer it (#4424).
        Renders nothing when there's nothing to review. -->
   <section v-if="items.length" class="fc-review" aria-label="Auto-tagged images to review">
     <div class="fc-review__head">
       <v-icon size="18" color="warning">mdi-alert-outline</v-icon>
       <span class="fc-review__title">
-        {{ items.length }} auto-tagged {{ items.length === 1 ? 'image' : 'images' }}
-        may be real content — review
+        {{ items.length }} {{ items.length === 1 ? 'auto-tag' : 'auto-tags' }} to check
       </span>
     </div>
     <div class="fc-review__cards">
@@ -21,22 +21,23 @@
           class="fc-review-card__thumb" loading="lazy"
         >
         <div class="fc-review-card__body">
+          <div class="fc-review-card__question">{{ question(it) }}</div>
           <div
-            class="fc-review-card__conflict"
-            :title="`Scored ${Math.round(it.conflict_score * 100)}% on “${it.conflict_name || 'a content tag'}”`"
+            class="fc-review-card__reason"
+            :title="reasonTitle(it)"
           >
-            also looks like <strong>{{ it.conflict_name || 'content' }}</strong>
+            also {{ Math.round(it.conflict_score * 100) }}%
+            <strong>{{ it.conflict_name || 'content' }}</strong>
           </div>
-          <div class="fc-review-card__tag">{{ tagLine(it) }}</div>
           <div class="fc-review-card__acts">
             <button
               type="button" class="fc-review-btn fc-review-btn--keep"
               :disabled="busy.includes(keyOf(it))" @click="resolve(it, 'keep')"
-            >{{ keepLabel(it) }}</button>
+            >Is {{ withArticle(it) }}</button>
             <button
               type="button" class="fc-review-btn fc-review-btn--unhide"
               :disabled="busy.includes(keyOf(it))" @click="resolve(it, 'unhide')"
-            >{{ removeLabel(it) }}</button>
+            >Is not {{ withArticle(it) }}</button>
           </div>
         </div>
       </div>
@@ -55,11 +56,18 @@ const items = ref([])
 const busy = ref([])
 
 function keyOf(it) { return `${it.image_id}:${it.tag_id}` }
-// Chrome flags hide the image (keep-hidden / un-hide); process flags leave it
-// visible and just tagged (keep-tag / remove-tag). Same endpoints, different words.
-function tagLine(it) { return (it.mode === 'process' ? 'auto-tagged ' : 'hidden as ') + it.tag_name }
-function keepLabel(it) { return it.mode === 'process' ? 'Keep tag' : 'Keep hidden' }
-function removeLabel(it) { return it.mode === 'process' ? 'Remove tag' : 'Un-hide' }
+// The card asks whether the image IS the auto-applied system tag, and the buttons
+// answer that (operator, #4424: "is a <tag>" / "is not a <tag>"). "Is" keeps the
+// tag ('keep'); "Is not" removes it, un-hiding a chrome image ('unhide'). The
+// content tag it also scored on is the reason it was flagged, not the question.
+function noun(it) { return it.tag_name === 'wip' ? 'WIP' : it.tag_name }
+function withArticle(it) { return (/^[aeiou]/i.test(noun(it)) ? 'an ' : 'a ') + noun(it) }
+function question(it) { return `Is this ${withArticle(it)}?` }
+function reasonTitle(it) {
+  const hidden = it.mode === 'process' ? '' : ' It is hidden from the gallery until you answer.'
+  return `Auto-tagged “${it.tag_name}”, but it also scored ${Math.round(it.conflict_score * 100)}% `
+    + `on “${it.conflict_name || 'a content tag'}”, so it may be finished art.${hidden}`
+}
 
 async function load() {
   // Fetched unconditionally on mount — the strip prompts for pending misfires
@@ -77,14 +85,11 @@ async function resolve(it, action) {
     await api.post(`/api/gallery/hidden-review/${it.image_id}/${it.tag_id}/${action}`)
     items.value = items.value.filter((x) => keyOf(x) !== k)
     if (action === 'unhide') {
-      const verb = it.mode === 'process' ? 'Removed' : 'Un-hidden'
-      toast({ text: `${verb} — “${it.tag_name}” removed; it'll train the head`, type: 'success' })
+      const shown = it.mode === 'process' ? '' : ', back in the gallery'
+      toast({ text: `Not ${withArticle(it)} — “${it.tag_name}” removed${shown}; the tagger learns from it`, type: 'success' })
     }
   } catch (e) {
-    toast({
-      text: `Could not ${action === 'keep' ? 'keep hidden' : 'un-hide'}: ${e.message}`,
-      type: 'error',
-    })
+    toast({ text: `Could not save your answer: ${e.message}`, type: 'error' })
   } finally {
     busy.value = busy.value.filter((x) => x !== k)
   }
@@ -112,7 +117,7 @@ onMounted(load)
   display: flex; gap: 10px; overflow-x: auto; padding-bottom: 4px;
 }
 .fc-review-card {
-  flex: 0 0 auto; width: 150px;
+  flex: 0 0 auto; width: 170px;
   display: flex; flex-direction: column;
   border: 1px solid rgb(var(--v-theme-surface-light));
   border-radius: 6px; overflow: hidden;
@@ -123,16 +128,16 @@ onMounted(load)
   background: rgb(var(--v-theme-surface-light));
 }
 .fc-review-card__body { padding: 6px 8px; }
-.fc-review-card__conflict {
-  font-size: 11px; color: rgb(var(--v-theme-on-surface));
+.fc-review-card__question {
+  font-size: 12px; font-weight: 600; color: rgb(var(--v-theme-on-surface));
   overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
 }
-.fc-review-card__conflict strong { color: rgb(var(--v-theme-warning)); }
-.fc-review-card__tag {
+.fc-review-card__reason {
   font-size: 10px; color: rgb(var(--v-theme-on-surface-variant));
   margin: 1px 0 6px;
   overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
 }
+.fc-review-card__reason strong { color: rgb(var(--v-theme-warning)); font-weight: 600; }
 .fc-review-card__acts { display: flex; gap: 4px; }
 .fc-review-btn {
   flex: 1; font-size: 11px; padding: 3px 4px; border-radius: 4px;

frontend/src/components/posts/PostCard.vue

@@ -26,6 +26,7 @@
         :to="{ name: 'artist', params: { slug: post.artist.slug } }"
         class="fc-post-card__artist"
       >{{ post.artist.name }}</RouterLink>
+      <span v-if="post.channel" class="fc-post-card__meta">#{{ post.channel }}</span>
       <span class="fc-post-card__date" :title="absoluteDate">{{ relativeDate }}</span>
       <span v-if="totalImages" class="fc-post-card__meta">
         · {{ totalImages }} image{{ totalImages === 1 ? '' : 's' }}

frontend/src/components/settings/ArchiveReextractCard.vue

@@ -17,7 +17,7 @@
         <v-icon start>mdi-folder-zip-outline</v-icon> Re-extract archives now
       </v-btn>
       <span v-if="queued" class="ml-3 text-caption text-success">Queued ✓</span>
-      <QueueStatusBar queue="maintenance" queue-label="Maintenance" />
+      <QueueStatusBar queue="maintenance_long" queue-label="Long maintenance" />
   </MaintenanceTile>
 </template>
 

frontend/src/components/settings/BrowserExtensionCard.vue

@@ -49,16 +49,20 @@
                sometimes triggered nothing instead of the install dialog
                (operator-flagged 2026-05-26). No `download` attribute —
                that would force a save dialog instead of install. -->
+          <!-- The VERSIONED file, not the `latest` alias: a versioned URL can
+               only ever be this build's bytes, so a browser cache can't hand
+               back the previous build (operator-flagged 2026-09-25: a cached
+               alias reinstalled the old version and the update never took). -->
           <v-btn
             v-if="isFirefox"
             color="accent" variant="flat" rounded="pill"
             prepend-icon="mdi-firefox"
-            :href="manifest.latest_url"
+            :href="manifest.xpi_url"
           >Install Firefox extension</v-btn>
 
           <v-btn
             variant="outlined" rounded="pill"
-            :href="manifest.latest_url" download
+            :href="manifest.xpi_url" download
             prepend-icon="mdi-download"
           >Download XPI</v-btn>
 

frontend/src/components/settings/ImportFiltersForm.vue

@@ -77,7 +77,7 @@
         <v-col cols="12" sm="6">
           <v-slider
             v-model="local.single_color_threshold" label="Single-color threshold"
-            min="0.5" max="1" step="0.05" thumb-label hide-details color="accent"
+            min="0.9" max="1" step="0.005" thumb-label hide-details color="accent"
             :disabled="!local.skip_single_color" @end="save"
           />
         </v-col>
@@ -103,17 +103,6 @@
           the Explore browse. Applies to new imports; run the scan below to catch
           posts already in your library.
         </div>
-        <v-switch
-          v-model="local.wip_soft_title_tagging_enabled"
-          label="Also tag “sketch” / “doodle” titles (lower precision)"
-          density="compact" hide-details color="primary" @change="save"
-        />
-        <div class="fc-help mb-3">
-          Extends the above to softer cues (<code>sketch</code>, <code>doodle</code>,
-          <code>scribble</code>). These stay <strong>visible</strong> and never train
-          the tagging model — a daily audit flags any that actually look like finished
-          art for review. Off by default.
-        </div>
         <v-btn
           variant="tonal" color="primary" size="small"
           :loading="store.wipScanBusy" prepend-icon="mdi-magnify"
@@ -153,10 +142,9 @@ const PHASH_TICKS = { 0: 'Exact', 12: 'Strict', 24: 'Default', 48: 'Loose' }
 const local = reactive({
   min_width: 0, min_height: 0,
   skip_transparent: false, transparency_threshold: 0.9,
-  skip_single_color: false, single_color_threshold: 0.95,
+  skip_single_color: false, single_color_threshold: 0.995,
   phash_threshold: 24,
   wip_title_tagging_enabled: true,
-  wip_soft_title_tagging_enabled: false,
 })
 
 watch(() => store.settings, (s) => { if (s) Object.assign(local, s) }, { immediate: true })

frontend/src/components/settings/MissingFileRepairCard.vue

@@ -18,7 +18,7 @@
         <v-icon start>mdi-file-remove-outline</v-icon> Repair missing-file records
       </v-btn>
       <span v-if="queued" class="ml-3 text-caption text-success">Queued ✓</span>
-      <QueueStatusBar queue="maintenance" queue-label="Maintenance" />
+      <QueueStatusBar queue="maintenance_long" queue-label="Long maintenance" />
   </MaintenanceTile>
 </template>
 

frontend/src/components/settings/QueuesTable.vue

@@ -41,7 +41,7 @@ const props = defineProps({
 
 const QUEUE_NAMES = [
   'default', 'import', 'thumbnail', 'ml',
-  'download', 'scan', 'maintenance',
+  'download', 'scan', 'maintenance', 'maintenance_long',
 ]
 
 function formatDepth(name) {

frontend/src/components/subscriptions/PosterCleanupDialog.vue

@@ -0,0 +1,135 @@
+<template>
+  <!-- #4486. A Discord source's posts by people outside its "Only posts by"
+       list, taken before the list existed. Preview first, always: nothing is
+       deleted until the operator has seen the per-poster breakdown and typed
+       the token that preview returned. -->
+  <v-dialog :model-value="modelValue" max-width="560"
+            @update:model-value="$emit('update:modelValue', $event)">
+    <v-card>
+      <v-card-title>Remove posts from other posters</v-card-title>
+      <v-card-text>
+        <div class="text-caption mb-2">{{ source.display_name || source.url }}</div>
+        <v-progress-linear v-if="loading" indeterminate color="accent" class="mb-3" />
+        <v-alert v-else-if="error" type="warning" variant="tonal" density="compact">
+          {{ error }}
+        </v-alert>
+        <template v-else-if="result">
+          <v-alert type="success" variant="tonal" density="compact">
+            Removed {{ result.posts_deleted }} post(s), {{ result.images_deleted }} image(s),
+            {{ result.attachments_deleted }} attachment(s) and {{ result.drops_deleted }}
+            grouped post(s). Grouping rebuilds what remains on its next sweep.
+          </v-alert>
+        </template>
+        <template v-else-if="preview">
+          <p class="mb-2">
+            Keeping posts by <strong>{{ preview.authors.join(', ') }}</strong>.
+          </p>
+          <p v-if="!preview.posts" class="fc-dim">
+            Nothing to remove: every post with a known poster is by someone on the list.
+          </p>
+          <template v-else>
+            <v-table density="compact" class="mb-3">
+              <thead><tr><th>Poster</th><th class="text-right">Posts</th></tr></thead>
+              <tbody>
+                <tr v-for="p in preview.posters" :key="p.poster">
+                  <td>{{ p.poster }}</td>
+                  <td class="text-right">{{ p.posts }}</td>
+                </tr>
+              </tbody>
+            </v-table>
+            <p class="mb-1">
+              {{ preview.posts }} post(s), {{ preview.images }} image(s) found only on them,
+              {{ preview.attachments }} attachment(s).
+            </p>
+            <p v-if="preview.drops" class="mb-1">
+              {{ preview.drops }} grouped post(s) that include them are ungrouped; the
+              rest regroup on the next sweep.
+            </p>
+            <p class="fc-dim">
+              Images that also belong to a kept post stay. If a name you want to keep
+              appears above, add it to the source's "Only posts by" list first.
+            </p>
+          </template>
+          <p v-if="preview.unknown_posts" class="fc-dim mt-2">
+            {{ preview.unknown_posts }} older post(s) don't record who posted them and
+            are left alone.
+          </p>
+        </template>
+      </v-card-text>
+      <v-card-actions>
+        <v-spacer />
+        <v-btn variant="text" @click="$emit('update:modelValue', false)">
+          {{ result ? 'Close' : 'Cancel' }}
+        </v-btn>
+        <v-btn
+          v-if="preview && preview.posts && !result"
+          color="error" variant="flat" :loading="busy"
+          @click="confirmOpen = true"
+        >Remove {{ preview.posts }} post(s)</v-btn>
+      </v-card-actions>
+    </v-card>
+    <DestructiveConfirmModal
+      v-if="preview"
+      v-model="confirmOpen"
+      action="delete" kind="other posters' posts" tier="C"
+      :expected-token-override="preview.confirm_token"
+      :projected-counts="{ posts: preview.posts, images: preview.images,
+                           attachments: preview.attachments, grouped: preview.drops }"
+      @confirm="onConfirm"
+    />
+  </v-dialog>
+</template>
+
+<script setup>
+import { ref, watch } from 'vue'
+import { useSourcesStore } from '../../stores/sources.js'
+import DestructiveConfirmModal from '../modal/DestructiveConfirmModal.vue'
+
+const props = defineProps({
+  modelValue: { type: Boolean, default: false },
+  source: { type: Object, required: true },
+})
+defineEmits(['update:modelValue'])
+const store = useSourcesStore()
+
+const loading = ref(false)
+const busy = ref(false)
+const error = ref('')
+const preview = ref(null)
+const result = ref(null)
+const confirmOpen = ref(false)
+
+function message(e) {
+  return e?.body?.detail || e?.body?.error || e?.message || String(e)
+}
+
+watch(() => props.modelValue, async (open) => {
+  if (!open) return
+  preview.value = null
+  result.value = null
+  error.value = ''
+  loading.value = true
+  try {
+    preview.value = await store.previewOtherPosters(props.source.id)
+  } catch (e) {
+    error.value = message(e)
+  } finally {
+    loading.value = false
+  }
+})
+
+async function onConfirm(token) {
+  busy.value = true
+  try {
+    result.value = await store.removeOtherPosters(props.source.id, token)
+  } catch (e) {
+    error.value = message(e)
+  } finally {
+    busy.value = false
+  }
+}
+</script>
+
+<style scoped>
+.fc-dim { color: rgb(var(--v-theme-on-surface-variant)); }
+</style>

frontend/src/components/subscriptions/SourceActions.vue

@@ -50,6 +50,17 @@
           library — without re-downloading media
         </v-list-item-subtitle>
       </v-list-item>
+      <v-list-item
+        v-if="hasPosterList && !running"
+        prepend-icon="mdi-account-remove-outline"
+        @click="cleanupOpen = true"
+      >
+        <v-list-item-title>Remove posts from other posters</v-list-item-title>
+        <v-list-item-subtitle>
+          Preview, then delete the posts taken from people outside this
+          source's "Only posts by" list
+        </v-list-item-subtitle>
+      </v-list-item>
       <v-divider v-if="isNative && !running" />
       <v-list-item
         base-color="error"
@@ -59,12 +70,14 @@
         <v-list-item-title>Remove source</v-list-item-title>
       </v-list-item>
     </KebabMenu>
+    <PosterCleanupDialog v-if="hasPosterList" v-model="cleanupOpen" :source="source" />
   </div>
 </template>
 
 <script setup>
-import { computed } from 'vue'
+import { computed, ref } from 'vue'
 import KebabMenu from '../common/KebabMenu.vue'
+import PosterCleanupDialog from './PosterCleanupDialog.vue'
 
 const props = defineProps({
   source: { type: Object, required: true },
@@ -80,6 +93,10 @@ const recapturing = computed(() => !!props.source.backfill_recapture)
 // which those are (`native_ingester`); a copied list here went stale when
 // Discord moved over.
 const isNative = computed(() => !!props.source.native_ingester)
+// #4486: only a Discord source with an "Only posts by" list has other posters.
+const hasPosterList = computed(() => props.source.platform === 'discord'
+  && (props.source.config_overrides?.discord_authors || []).length > 0)
+const cleanupOpen = ref(false)
 </script>
 
 <style scoped>

frontend/src/components/subscriptions/SourceCard.vue

@@ -16,7 +16,7 @@
       <a
         :href="source.url" target="_blank" rel="noopener"
         class="fc-source-card__url" @click.stop
-      >{{ source.url }}</a>
+      >{{ source.display_name || source.url }}</a>
       <v-btn
         icon="mdi-pencil" size="x-small" variant="text"
         @click.stop="$emit('edit', source)"
@@ -39,18 +39,18 @@
       </v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'running'"
-        size="x-small" color="info" variant="tonal" label
+        size="x-small" color="info" variant="flat" label
       >{{ source.backfill_bypass_seen ? 'Recovering' : (source.backfill_recapture ? 'Recapturing' : 'Backfilling')
         }}{{ source.backfill_posts
               ? ` · ${source.backfill_posts} posts`
               : (source.backfill_chunks ? ` (${source.backfill_chunks})` : '') }}</v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'complete'"
-        size="x-small" color="success" variant="tonal" label
+        size="x-small" color="success" variant="flat" label
       >Backfilled</v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'stalled'"
-        size="x-small" color="warning" variant="tonal" label
+        size="x-small" color="warning" variant="flat" label
       >Stalled</v-chip>
     </div>
 

frontend/src/components/subscriptions/SourceFormDialog.vue

@@ -44,6 +44,17 @@
               v-model="structuredSince" label="Skip posts older than (YYYY-MM-DD)"
               placeholder="2024-01-01" hide-details class="mt-2"
             />
+            <!-- A creator's server is full of other members posting their own
+                 pictures; the source is subscribed to the creator (#4481). -->
+            <v-text-field
+              v-if="platform === 'discord'"
+              v-model="structuredAuthors" label="Only posts by (Discord names or ids)"
+              placeholder="Todding" hint="Comma-separated. Empty takes everyone's."
+              persistent-hint class="mt-2"
+            />
+            <div v-if="platform === 'discord' && authorNames.length" class="text-caption mt-2">
+              {{ authorNames.join(', ') }}
+            </div>
             <p class="text-caption mt-2" style="opacity: 0.75">
               More per-platform fields land here over time. Use Advanced JSON for everything else.
             </p>
@@ -98,6 +109,33 @@ const urlError = ref('')
 const configTab = ref('structured')
 const structuredVideos = ref(true)
 const structuredSince = ref('')
+const structuredAuthors = ref('')
+// Keys the structured view has no field for, carried through its saves so
+// switching tabs never drops what the JSON view set.
+const otherConfig = ref({})
+const STRUCTURED_KEYS = ['videos', 'since', 'discord_authors']
+
+// The extension's poster picker stores ids (#4488) and the name each was
+// picked under, so a list of numbers still says who it means.
+const authorNames = computed(() => {
+  const labels = otherConfig.value.discord_author_labels || {}
+  return splitAuthors(structuredAuthors.value)
+    .map(a => (labels[a] ? `${labels[a]} (${a})` : null))
+    .filter(Boolean)
+})
+
+function splitAuthors(txt) {
+  return (txt || '').split(',').map(s => s.trim()).filter(Boolean)
+}
+
+function takeConfig(co) {
+  structuredVideos.value = co.videos !== false
+  structuredSince.value = co.since ?? ''
+  structuredAuthors.value = Array.isArray(co.discord_authors) ? co.discord_authors.join(', ') : ''
+  otherConfig.value = Object.fromEntries(
+    Object.entries(co).filter(([k]) => !STRUCTURED_KEYS.includes(k)),
+  )
+}
 const jsonText = ref('{}')
 const jsonError = ref('')
 
@@ -105,13 +143,15 @@ const busy = ref(false)
 
 // Sync config_overrides between the two views.
 const config = computed(() => {
-  const out = {}
+  const out = { ...otherConfig.value }
   if (!structuredVideos.value) out.videos = false
   if (structuredSince.value) out.since = structuredSince.value
+  const authors = splitAuthors(structuredAuthors.value)
+  if (authors.length) out.discord_authors = authors
   return out
 })
 
-watch([structuredVideos, structuredSince], () => {
+watch([structuredVideos, structuredSince, structuredAuthors], () => {
   if (configTab.value === 'structured') {
     jsonText.value = JSON.stringify(config.value, null, 2)
     jsonError.value = ''
@@ -128,8 +168,7 @@ watch(jsonText, (txt) => {
     }
     jsonError.value = ''
     // Reflect recognized keys into the structured view.
-    structuredVideos.value = parsed.videos !== false
-    structuredSince.value = parsed.since ?? ''
+    takeConfig(parsed)
   } catch {
     jsonError.value = 'Invalid JSON'
   }
@@ -146,14 +185,13 @@ watch(() => props.modelValue, async (open) => {
     url.value = props.source.url
     enabled.value = props.source.enabled
     const co = props.source.config_overrides || {}
-    structuredVideos.value = co.videos !== false
-    structuredSince.value = co.since ?? ''
+    takeConfig(co)
     jsonText.value = JSON.stringify(co, null, 2)
     artistChoice.value = { id: props.source.artist_id, name: props.source.artist_name }
   } else {
     platform.value = platformsStore.list[0]?.key || 'patreon'
     url.value = ''; enabled.value = true
-    structuredVideos.value = true; structuredSince.value = ''
+    takeConfig({})
     jsonText.value = '{}'
     artistChoice.value = props.initialArtist
       ? { id: props.initialArtist.id, name: props.initialArtist.name }

frontend/src/components/subscriptions/SourceRow.vue

@@ -10,7 +10,7 @@
       <div class="fc-source-row__url-wrap">
         <a :href="source.url" target="_blank" rel="noopener" class="fc-source-row__url"
            @click.stop>
-          {{ source.url }}
+          {{ source.display_name || source.url }}
         </a>
         <!-- Edit sits next to the source identity (operator-requested), not in
              the action cluster where it was easy to fat-finger Remove. -->
@@ -72,7 +72,7 @@
            worked, the content just isn't ours. -->
       <v-chip
         v-else-if="source.error_type === 'tier_limited'"
-        size="x-small" color="info" variant="tonal" label
+        size="x-small" color="info" variant="flat" label
         prepend-icon="mdi-lock-outline"
       >{{ source.tier_gated_count ? `${source.tier_gated_count} gated` : 'No access' }}
         <v-tooltip activator="parent" location="top" max-width="480">
@@ -81,18 +81,18 @@
       </v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'running'"
-        size="x-small" color="info" variant="tonal" label
+        size="x-small" color="info" variant="flat" label
       >{{ source.backfill_bypass_seen ? 'Recovering' : (source.backfill_recapture ? 'Recapturing' : 'Backfilling')
         }}{{ source.backfill_posts
               ? ` · ${source.backfill_posts} posts`
               : (source.backfill_chunks ? ` (${source.backfill_chunks})` : '') }}</v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'complete'"
-        size="x-small" color="success" variant="tonal" label
+        size="x-small" color="success" variant="flat" label
       >Backfilled</v-chip>
       <v-chip
         v-else-if="source.backfill_state === 'stalled'"
-        size="x-small" color="warning" variant="tonal" label
+        size="x-small" color="warning" variant="flat" label
       >Stalled</v-chip>
       <span v-else class="fc-source-row__zero">0</span>
     </td>

frontend/src/components/subscriptions/SubscriptionsTab.vue

@@ -108,7 +108,7 @@
             v-if="item.singleSource"
             :href="item.singleSource.url" target="_blank" rel="noopener"
             class="fc-subs__sub-url" @click.stop
-          >{{ item.singleSource.url }}</a>
+          >{{ item.singleSource.display_name || item.singleSource.url }}</a>
         </template>
 
         <template #item.platforms="{ item }">
@@ -517,6 +517,7 @@ const filteredGroups = computed(() => {
         g.sources.some(
           (s) =>
             (s.url || '').toLowerCase().includes(q) ||
+            (s.display_name || '').toLowerCase().includes(q) ||
             (s.platform || '').toLowerCase().includes(q),
         ),
     )

frontend/src/stores/admin.js

@@ -119,7 +119,7 @@ export const useAdminStore = defineStore('admin', () => {
   // --- Task progress polling (taps FC-3i activity dashboard) --------
 
   /**
-   * Polls /api/system/activity/runs?queue=maintenance every 3s,
+   * Polls /api/system/activity/runs?celery_task_id=<id> every 3s,
    * resolves when a task_run row with the given celery task_id
    * reaches a terminal status (ok / error / timeout). Returns the
    * row. Times out after 30 min by default.
@@ -129,7 +129,9 @@ export const useAdminStore = defineStore('admin', () => {
     while (Date.now() < deadline) {
       const body = await api.get(
         '/api/system/activity/runs',
-        { params: { queue: 'maintenance', limit: 20 } },
+        // By id, not by lane: these jobs run on `maintenance_long`, and a
+        // lane filter here is one more copy of the routing table (#4432).
+        { params: { celery_task_id: taskId, limit: 1 } },
       )
       const row = (body.runs || []).find(r => r.celery_task_id === taskId)
       if (row && ['ok', 'error', 'timeout'].includes(row.status)) {

frontend/src/stores/cleanup.js

@@ -12,7 +12,7 @@ export const useCleanupStore = defineStore('cleanup', () => {
     min_width: 0,
     min_height: 0,
     transparency_threshold: 0.9,
-    single_color_threshold: 0.95,
+    single_color_threshold: 0.995,
     single_color_tolerance: 30,
   })
 
@@ -24,7 +24,7 @@ export const useCleanupStore = defineStore('cleanup', () => {
       min_width: s.min_width ?? 0,
       min_height: s.min_height ?? 0,
       transparency_threshold: s.transparency_threshold ?? 0.9,
-      single_color_threshold: s.single_color_threshold ?? 0.95,
+      single_color_threshold: s.single_color_threshold ?? 0.995,
       single_color_tolerance: s.single_color_tolerance ?? 30,
     }
   }

frontend/src/stores/sources.js

@@ -149,6 +149,15 @@ export const useSourcesStore = defineStore('sources', () => {
     return body
   }
 
+  // #4486: a Discord source's posts by people outside its poster list.
+  // The preview touches nothing and hands back the token the remove must echo.
+  async function previewOtherPosters(id) {
+    return api.get(`/api/sources/${id}/discord/other-posters`)
+  }
+  async function removeOtherPosters(id, confirm) {
+    return api.post(`/api/sources/${id}/discord/other-posters/remove`, { body: { confirm } })
+  }
+
   function sourcesByArtistGrouped() {
     // returns [{artist: {id,name,slug}, sources: [...]}, ...]
     const arr = byArtist.value.get(null) ?? []
@@ -179,6 +188,7 @@ export const useSourcesStore = defineStore('sources', () => {
     stopBackfill,
     recoverSource,
     recaptureSource,
+    previewOtherPosters, removeOtherPosters,
     findOrCreateArtist, autocompleteArtist, reassign,
     loadScheduleStatus,
     sourcesByArtistGrouped,

scripts/release_notes.py

@@ -210,8 +210,8 @@ def render(
         )
 
     parts.append(
-        f"Built from `{short}`. The rollback unit is the immutable `:c-` tag "
-        f"(rule 145) — these three move together:\n\n```\n"
+        f"Built from `{short}`. To roll back to this release, pull these "
+        f"immutable `:c-` tags — the images move together:\n\n```\n"
         + "\n".join(f"{image}:c-{short}" for image in IMAGES)
         + "\n```"
     )
@@ -221,10 +221,10 @@ def render(
         # truncated to MAX_COMMITS, which is 200 lines of internal build-out
         # presented to someone who has never seen this project.
         parts.append(
-            "---\n\n_First release under rule 148's `vYYYY.MM.DD.HHMM` shape, so "
-            "there is no predecessor to diff against and no changelog to derive. "
-            "The description above is README.md's, quoted at publish time. Later "
-            "releases carry the commits since the previous one._"
+            "---\n\n_The first release, so there is no earlier one to diff "
+            "against and no changelog to derive. The description above is "
+            "README.md's, quoted at publish time. Later releases carry the "
+            "commits since the previous one._"
         )
         return "\n\n".join(parts)
 
@@ -257,8 +257,8 @@ def cross_checks(tag: str, sha: str) -> list[str]:
 
     if not RULE_148.match(tag):
         notes.append(
-            f"`{tag}` is not rule 148's `vYYYY.MM.DD.HHMM` shape. Published "
-            f"anyway — the old `v26.*` tags predate the rule."
+            f"`{tag}` is not the `vYYYY.MM.DD.HHMM` release-tag shape. "
+            f"Published anyway — the old `v26.*` tags predate it."
         )
     else:
         derived = artifact_version("web")

tests/test_api_extension.py

@@ -779,6 +779,28 @@ async def test_serve_extension_latest_returns_most_recent_xpi(
     assert data == b"new"
 
 
+@pytest.mark.asyncio
+async def test_the_latest_alias_is_never_served_from_a_stale_cache(
+    client, monkeypatch, tmp_path,
+):
+    """One URL whose bytes change every release: a cached copy reinstalls the
+    previous build (operator-flagged 2026-09-25, when it was max-age=43200)."""
+    (tmp_path / "fabledcurator-1.0.1.xpi").write_bytes(b"new")
+    monkeypatch.setattr(frontend_module, "XPI_DIR", tmp_path)
+    resp = await client.get("/extension/fabledcurator-latest.xpi")
+    assert resp.headers["Cache-Control"] == "no-cache"
+    assert "Expires" not in resp.headers
+
+
+@pytest.mark.asyncio
+async def test_a_versioned_xpi_is_cached_for_good(client, monkeypatch, tmp_path):
+    """A versioned name is one build's bytes forever."""
+    (tmp_path / "fabledcurator-1.0.1.xpi").write_bytes(b"new")
+    monkeypatch.setattr(frontend_module, "XPI_DIR", tmp_path)
+    resp = await client.get("/extension/fabledcurator-1.0.1.xpi")
+    assert "immutable" in resp.headers["Cache-Control"]
+
+
 @pytest.mark.asyncio
 async def test_serve_extension_latest_404_when_dir_empty(client, monkeypatch, tmp_path):
     monkeypatch.setattr(frontend_module, "XPI_DIR", tmp_path)

tests/test_api_system_activity.py

@@ -295,3 +295,11 @@ async def test_failures_only_within_24h_window(client, _seed_failures):
     body = await resp.get_json()
     ids = {r["error_type"] for r in body["recent"]}
     assert "OldError" not in ids
+
+
+@pytest.mark.asyncio
+async def test_runs_filter_by_celery_task_id(client, _seed_runs):
+    # How a page follows a job it started, without knowing its lane (#4432).
+    resp = await client.get("/api/system/activity/runs?celery_task_id=tid-3")
+    body = await resp.get_json()
+    assert [r["celery_task_id"] for r in body["runs"]] == ["tid-3"]

tests/test_audits_single_color.py

@@ -40,3 +40,48 @@ def test_single_color_evaluate_handles_rgba_input():
     # Alpha channel should be ignored — only RGB matters for the rule.
     im = Image.new("RGBA", (50, 50), (100, 100, 100, 128))
     assert single_color.evaluate(im, threshold=0.9, tolerance=10) is True
+
+
+# -- line art is a drawing, not a blank (#4483) ---------------------------------
+
+_T = 0.995  # the default since alembic 0116
+_TOL = 30
+
+
+def _doodle(size=(1500, 2000), lines=12):
+    """Pencil line art on white: a few thin dark strokes plus faint
+    construction lines — a couple of percent ink, the rest paper."""
+    from PIL import ImageDraw
+
+    im = Image.new("RGB", size, (255, 255, 255))
+    draw = ImageDraw.Draw(im)
+    w, h = size
+    for i in range(lines):
+        x = (i + 1) * w // (lines + 1)
+        draw.line([(x, 0), (w - x, h)], fill=(70, 60, 60), width=3)
+        draw.line([(0, (i + 1) * h // (lines + 1)), (w, h - x)], fill=(235, 235, 235), width=2)
+    return im
+
+
+def test_line_art_on_white_is_not_single_color():
+    """Five of Todding's Discord doodles were skipped as blank: a smoothing
+    64px thumbnail blended the strokes into the paper."""
+    assert single_color.evaluate(_doodle(), threshold=_T, tolerance=_TOL) is False
+
+
+def test_a_blank_page_with_a_small_mark_is_still_single_color():
+    from PIL import ImageDraw
+
+    im = Image.new("RGB", (1000, 1000), (250, 250, 250))
+    ImageDraw.Draw(im).rectangle([480, 480, 520, 520], fill=(40, 40, 40))
+    assert single_color.evaluate(im, threshold=_T, tolerance=_TOL) is True
+
+
+def test_a_noisy_solid_fill_is_still_single_color():
+    """JPEG noise on a placeholder stays inside the tolerance."""
+    im = Image.new("RGB", (600, 600), (30, 90, 160))
+    for i in range(0, 600 * 600, 7):
+        x, y = i % 600, i // 600
+        d = (i % 21) - 10
+        im.putpixel((x, y), (30 + d, 90 + d, 160 + d))
+    assert single_color.evaluate(im, threshold=_T, tolerance=_TOL) is True

tests/test_celery_routing.py

@@ -2,6 +2,8 @@
 `maintenance_long` lane so a 30-min backup or a multi-chunk audit can't starve
 the quick recovery sweeps / vacuum on the concurrency-1 `maintenance` lane
 (operator-flagged 2026-06-07)."""
+import pytest
+
 from backend.app.celery_app import celery
 
 
@@ -20,23 +22,65 @@ def test_quick_maintenance_stays_on_maintenance():
     assert routes["backend.app.tasks.maintenance.*"]["queue"] == "maintenance"
 
 
-def test_queue_for_mirrors_external_to_download():
-    """celery_signals._queue_for is a hand-maintained mirror of task_routes
-    that stamps TaskRun.queue. external.* routes to the download lane, so the
-    mirror must agree — else TaskRun.queue lies 'default' for external fetches
-    and per-queue dashboard filters / threshold overrides miss them
-    (operator-flagged 2026-06-17)."""
+@pytest.mark.parametrize(("name", "queue"), [
+    ("backend.app.tasks.external.fetch_external_link", "download"),
+    # The rows #4432 found recorded on the wrong lane:
+    ("backend.app.tasks.translation.translate_posts", "maintenance_long"),
+    ("backend.app.tasks.gpu_queue.enqueue_gpu_backfill", "maintenance"),
+    ("backend.app.tasks.maintenance.backfill_phash", "maintenance_long"),
+    ("backend.app.tasks.maintenance.date_posts_from_records", "maintenance_long"),
+    ("backend.app.tasks.admin.normalize_tags_task", "maintenance_long"),
+    ("backend.app.tasks.backup.backup_db_task", "maintenance_long"),
+    ("backend.app.tasks.maintenance.vacuum_analyze", "maintenance"),
+    ("backend.app.tasks.not_routed.anything", "default"),
+])
+def test_task_run_records_the_queue_the_router_sends_to(name, queue):
+    """TaskRun.queue comes from the router, not a copy of task_routes (#4432):
+    the stall sweep's per-queue thresholds and the System activity filters both
+    key off it."""
     from backend.app.celery_signals import _queue_for
 
     class _T:
-        name = "backend.app.tasks.external.fetch_external_link"
+        pass
 
-    assert _queue_for(_T()) == "download"
-    assert (
-        celery.conf.task_routes["backend.app.tasks.external.*"]["queue"]
-        == "download"
+    t = _T()
+    t.name = name
+    t.app = celery
+    assert _queue_for(t) == queue
+
+
+def test_no_task_outlives_its_stall_threshold():
+    """A task whose hard time limit is longer than the stall sweep's threshold
+    for it gets failed 'RecoverySweep' while it is still healthy — the class
+    #4432 found on the ml, import and long-maintenance lanes. The threshold is
+    resolved the way recover_stalled_task_runs resolves it: task-name override,
+    then queue, then the default."""
+    from backend.app.celery_signals import _queue_for
+    from backend.app.tasks.maintenance import (
+        QUEUE_STUCK_THRESHOLD_MINUTES,
+        STUCK_THRESHOLD_MINUTES,
+        TASK_STUCK_THRESHOLD_MINUTES,
     )
 
+    celery.loader.import_default_modules()
+    checked = 0
+    too_short = []
+    for name, task in sorted(celery.tasks.items()):
+        if name.startswith("celery."):
+            continue
+        limit = getattr(task, "time_limit", None)
+        if not limit:
+            continue
+        threshold = TASK_STUCK_THRESHOLD_MINUTES.get(
+            name,
+            QUEUE_STUCK_THRESHOLD_MINUTES.get(_queue_for(task), STUCK_THRESHOLD_MINUTES),
+        )
+        checked += 1
+        if limit / 60 > threshold:
+            too_short.append(f"{name}: limit {limit / 60:.0f} min > sweep {threshold} min")
+    assert checked > 20, "the task registry did not load — this guard checked nothing"
+    assert not too_short, "\n".join(too_short)
+
 
 def test_backfill_phash_runs_on_the_long_lane():
     """It lives in maintenance.py, so the quick-lane glob matches it too —

tests/test_discord_client.py

@@ -153,9 +153,11 @@ def test_an_embeds_identity_ignores_its_signature():
     def embed(sig):
         return {"type": "image", "image": {"proxy_url": f"https://media/p/x.png?ex={sig}"}}
 
-    one = DiscordClient.extract_media(_msg(9, embeds=[embed("a")]))[0].media_id
-    two = DiscordClient.extract_media(_msg(9, embeds=[embed("b")]))[0].media_id
-    assert one == two and len(one) <= 33
+    art = [{"url": "https://cdn/a/1.png"}]
+    one = DiscordClient.extract_media(_msg(9, attachments=art, embeds=[embed("a")]))[1]
+    two = DiscordClient.extract_media(_msg(9, attachments=art, embeds=[embed("b")]))[1]
+    assert one.kind == two.kind == "embed"
+    assert one.media_id == two.media_id and len(one.media_id) <= 33
 
 
 def test_post_seams():
@@ -165,11 +167,52 @@ def test_post_seams():
 
 
 def test_a_text_only_message_is_not_a_post():
-    """gallery-dl never made one: chat lines would bury the drops."""
+    """Chat lines would bury the drops."""
     assert DiscordClient.post_record_key(_msg(6, content="brb")) is None
     assert DiscordClient.post_meta(_msg(1))["date"].startswith("2026-09-20")
 
 
+def test_a_message_without_an_attached_image_is_chat():
+    """Operator 2026-09-28: only content with an image attached. A lone
+    archive, a link preview or a Tenor GIF takes nothing and records nothing."""
+    chat = [
+        _msg(1, content="the stash", attachments=[
+            {"url": "https://cdn/a/Links_Stash.rar", "content_type": "application/x-rar"},
+        ]),
+        _msg(2, content="look", embeds=[
+            {"type": "image", "image": {"proxy_url": "https://media/p/x.png"}},
+        ]),
+        _msg(3, content="lol", embeds=[
+            {"type": "gifv", "video": {"proxy_url": "https://media/p/t.mp4"}},
+        ]),
+        _msg(4, content="wip", attachments=[{"url": "https://cdn/a/wip.psd"}]),
+    ]
+    for m in chat:
+        assert DiscordClient.extract_media(m) == []
+        assert DiscordClient.post_record_key(m) is None
+
+
+def test_an_attached_image_takes_every_file_numbered_as_gallery_dl_does():
+    """The gate decides WHETHER a message is taken, never which of its files:
+    the rar beside the image keeps its number, so on-disk names still match."""
+    m = _msg(7, attachments=[
+        {"url": "https://cdn/a/pack.rar"},
+        {"url": "https://cdn/a/noext", "content_type": "image/png"},
+    ])
+    items = DiscordClient.extract_media(m)
+    assert [(i.num, i.filename) for i in items] == [(1, "pack"), (2, "noext")]
+    assert DiscordClient.post_record_key(m) == ("message:7", "7")
+    video = _msg(8, attachments=[{"url": "https://cdn/a/clip.MP4?ex=1"}])
+    assert len(DiscordClient.extract_media(video)) == 1
+
+
+def test_a_forwarded_image_counts_as_attached():
+    m = _msg(9, message_snapshots=[
+        {"message": {"type": 0, "attachments": [{"url": "https://cdn/a/fwd.png"}]}},
+    ])
+    assert DiscordClient.post_record_key(m) == ("message:9", "9")
+
+
 # -- the walk --------------------------------------------------------------------
 
 def test_a_channel_pages_newest_first_and_skips_system_messages():
@@ -206,6 +249,50 @@ def test_messages_carry_server_and_channel_metadata():
     assert meta["parent"] == "Art"
 
 
+def _one_channel(messages):
+    return {
+        "/guilds/1": _ok({"id": "1", "name": "Todding's Server"}),
+        "/guilds/1/channels": _ok([
+            {"id": "4", "type": 4, "name": "Todding"},
+            {"id": "2", "type": 0, "name": "banana-land", "parent_id": "4"},
+        ]),
+        ("/channels/2/messages", None): _ok(messages),
+        ("/channels/2/threads/search", 0): _ok({"threads": []}),
+    }
+
+
+def test_only_from_takes_the_creators_messages_and_no_one_elses():
+    """Operator 2026-09-28: in the creator's server, another member posting a
+    meme is not the creator's art. Matched by id, username or display name."""
+    creator = {"id": "7", "username": "todding", "global_name": "Todding"}
+    other = {"id": "8", "username": "jakeboii", "global_name": "Jake Boii"}
+    msgs = [_msg(3, author=creator), _msg(2, author=other), _msg(1, author=creator)]
+    url = "https://discord.com/channels/1/2"
+
+    everyone = _client(_one_channel([dict(m) for m in msgs]))
+    assert [mid for mid, _ in _ids(everyone, url)] == ["3", "2", "1"]
+    for who in (["Todding"], ["TODDING "], ["7"]):
+        client = _client(_one_channel([dict(m) for m in msgs]))
+        client.only_from(who)
+        assert [mid for mid, _ in _ids(client, url)] == ["3", "1"]
+    client = _client(_one_channel([dict(m) for m in msgs]))
+    client.only_from([])
+    assert len(_ids(client, url)) == 3
+
+
+def test_the_source_label_names_the_server_and_channel_the_walk_read():
+    client = _client(_one_channel([]))
+    url = "https://discord.com/channels/1/2"
+    assert client.source_label(url) is None  # nothing walked yet
+    list(client.iter_posts(url))
+    assert client.source_label(url) == "Todding's Server · #banana-land"
+    assert client.source_label("https://discord.com/channels/1") == "Todding's Server"
+    client._channels["9"] = {"channel": "wip", "is_thread": True, "parent": "banana-land"}
+    assert client.source_label("https://discord.com/channels/1/9") == (
+        "Todding's Server · #banana-land › wip"
+    )
+
+
 def test_a_server_walks_text_then_threads_newest_created_first_and_skips_private():
     routes = {
         "/guilds/1": _ok({"id": "1", "name": "S"}),
@@ -337,3 +424,60 @@ def test_the_adapter_authenticates_with_the_token_and_keys_by_identity(tmp_path)
         _msg(9, attachments=[{"id": "300", "url": "https://cdn/a/1.png"}])
     )
     assert _ledger_key(media) == "9:300"
+
+
+# -- the poster picker (#4488) -------------------------------------------------
+
+def _person(pid, username, global_name=None, **extra):
+    return {"id": pid, "username": username, "global_name": global_name,
+            "messages": 1, "images": 0, **extra}
+
+
+def test_the_creator_a_server_is_named_for_is_suggested():
+    ranked = dc.rank_posters("Todding's Server", "99", [
+        _person("8", "jakeboii", "Jake Boii", images=3),
+        _person("7", "todding", "Todding", images=1),
+    ])
+    assert ranked[0]["id"] == "7" and ranked[0]["suggested"] is True
+    assert ranked[0]["reasons"] == ["name matches the server"]
+    assert ranked[1]["suggested"] is False
+
+
+def test_owning_the_server_and_matching_its_name_outranks_either_alone():
+    ranked = dc.rank_posters("The Official Todding Discord", "7", [
+        _person("5", "toddingfan"),
+        _person("7", "t0dd", "Todding"),
+    ])
+    assert [r["id"] for r in ranked if r["suggested"]] == ["7"]
+    assert ranked[0]["reasons"] == ["owns the server", "name matches the server"]
+
+
+def test_no_signal_suggests_no_one_and_bots_never():
+    assert not any(r["suggested"] for r in dc.rank_posters("Art Club", None, [
+        _person("1", "alice"), _person("2", "bob"),
+    ]))
+    ranked = dc.rank_posters("Todding's Server", None, [_person("3", "toddingbot", bot=True)])
+    assert ranked[0]["suggested"] is False
+
+
+def test_recent_posters_tallies_a_shallow_window_by_id():
+    creator = {"id": "7", "username": "todding", "global_name": "Todding"}
+    other = {"id": "8", "username": "jakeboii", "global_name": "Jake Boii"}
+    art = [{"url": "https://cdn/a/1.png"}]
+    page = [_msg(i, author=creator, attachments=art) for i in range(300, 240, -1)]
+    page += [_msg(i, author=other) for i in range(240, 200, -1)]
+    routes = {
+        "/guilds/1": _ok({"id": "1", "name": "Todding's Server", "owner_id": "7"}),
+        ("/channels/2/messages", None): _ok(page),
+        ("/channels/2/messages", "201"): _ok([_msg(150, author=other)]),
+    }
+    client = _client(routes)
+    got = client.recent_posters("1", "2", max_messages=150)
+    assert got["server"] == "Todding's Server" and got["owner_id"] == "7"
+    assert got["scanned"] == 101
+    first = got["posters"][0]
+    assert (first["id"], first["messages"], first["images"], first["suggested"]) == ("7", 60, 60, True)
+    assert got["posters"][1]["messages"] == 41
+    # It asked for no more than the window: 100, then the 50 left of 150.
+    limits = [p.get("limit") for e, p in client._session.calls if e.endswith("/messages")]
+    assert limits == [100, 50]

tests/test_discord_poster_cleanup.py

@@ -0,0 +1,131 @@
+"""Removing a Discord source's posts by people outside its poster list (#4486).
+
+Real Postgres (db_sync): the predicates read `raw_metadata->>'author'`, which
+only the database can evaluate. The test that matters runs preview and apply
+on one fixture and asserts they agree AND that the rows went (snippet #3087).
+"""
+
+import pytest
+from sqlalchemy import func, select
+
+from backend.app.models import (
+    Artist,
+    ImageProvenance,
+    ImageRecord,
+    Post,
+    PostAttachment,
+    Source,
+)
+from backend.app.services import discord_poster_cleanup as cleanup
+
+pytestmark = pytest.mark.integration
+
+
+def _image(db, artist, tmp_path, name, post):
+    f = tmp_path / f"{name}.png"
+    f.write_bytes(b"x")
+    img = ImageRecord(
+        artist_id=artist.id, path=str(f), sha256=name.ljust(64, "0"),
+        size_bytes=1, mime="image/png", origin="downloaded", primary_post_id=post.id,
+    )
+    db.add(img)
+    db.flush()
+    return img
+
+
+def _post(db, source, mid, raw, **extra):
+    p = Post(
+        source_id=source.id, artist_id=source.artist_id, external_post_id=mid,
+        raw_metadata=raw, **extra,
+    )
+    db.add(p)
+    db.flush()
+    return p
+
+
+def _fixture(db, tmp_path, authors=("Todding",)):
+    """Todding's post, two of Jake's (one sharing an image with Todding's), an
+    old post with no poster, and a drop that absorbed Todding's and Jake's."""
+    artist = Artist(name="Todding", slug="todding-cleanup")
+    db.add(artist)
+    db.flush()
+    src = Source(
+        artist_id=artist.id, platform="discord",
+        url="https://discord.com/channels/1/2",
+        config_overrides={"discord_authors": list(authors)} if authors else None,
+    )
+    db.add(src)
+    db.flush()
+    todd = _post(db, src, "10", {"author": "todding", "author_name": "Todding", "author_id": "1"})
+    jake1 = _post(db, src, "11", {"author": "jakeboii", "author_id": "8"})
+    jake2 = _post(db, src, "12", {"author": "jakeboii", "author_id": "8"})
+    old = _post(db, src, "13", {"category": "discord"})
+    drop = _post(db, src, "fc-drop:10", None, synthesized_by="discord_drop")
+    todd.absorbed_by_post_id = drop.id
+    jake1.absorbed_by_post_id = drop.id
+
+    art = _image(db, artist, tmp_path, "art", todd)
+    meme = _image(db, artist, tmp_path, "meme", jake1)
+    shared = _image(db, artist, tmp_path, "shared", jake2)
+    legacy = _image(db, artist, tmp_path, "legacy", old)
+    db.add_all([
+        ImageProvenance(image_record_id=shared.id, post_id=todd.id, source_id=src.id),
+        ImageProvenance(image_record_id=art.id, post_id=drop.id, source_id=src.id),
+        ImageProvenance(image_record_id=meme.id, post_id=drop.id, source_id=src.id),
+        PostAttachment(
+            post_id=jake2.id, artist_id=artist.id, sha256="z" * 64,
+            path="/store/z/f.zip", original_filename="f.zip", ext=".zip", size_bytes=1,
+        ),
+    ])
+    db.commit()
+    return src, {
+        "todd": todd.id, "jake1": jake1.id, "jake2": jake2.id, "old": old.id,
+        "drop": drop.id, "art": art.id, "meme": meme.id, "shared": shared.id,
+        "legacy": legacy.id,
+    }
+
+
+def test_preview_matches_apply_and_the_rows_go(db_sync, tmp_path):
+    src, ids = _fixture(db_sync, tmp_path)
+
+    projected = cleanup.preview(db_sync, source_id=src.id)
+    assert projected["authors"] == ["todding"]
+    assert projected["posters"] == [{"poster": "jakeboii", "posts": 2}]
+    assert projected["unknown_posts"] == 1
+
+    done = cleanup.apply(db_sync, source_id=src.id, images_root=tmp_path)
+    assert projected["posts"] == done["posts_deleted"] == 2
+    assert projected["images"] == done["images_deleted"] == 1  # the meme only
+    assert projected["attachments"] == done["attachments_deleted"] == 1
+    assert projected["drops"] == done["drops_deleted"] == 1
+
+    post_ids = set(db_sync.execute(select(Post.id).where(Post.source_id == src.id)).scalars())
+    assert post_ids == {ids["todd"], ids["old"]}
+    image_ids = set(db_sync.execute(
+        select(ImageRecord.id).where(ImageRecord.id.in_(
+            [ids["art"], ids["meme"], ids["shared"], ids["legacy"]]))
+    ).scalars())
+    # The meme was only Jake's. The shared piece is also on Todding's post, and
+    # the drop's link to the art was never what kept it.
+    assert image_ids == {ids["art"], ids["shared"], ids["legacy"]}
+    assert not (tmp_path / "meme.png").exists()
+    # Todding's message is back in the feed, for the sweep to regroup.
+    assert db_sync.get(Post, ids["todd"]).absorbed_by_post_id is None
+    assert db_sync.execute(select(func.count(PostAttachment.id)).where(
+        PostAttachment.sha256 == "z" * 64)).scalar_one() == 0
+
+
+def test_a_poster_matches_by_display_name_or_id_too(db_sync, tmp_path):
+    src, _ = _fixture(db_sync, tmp_path, authors=("8",))
+    projected = cleanup.preview(db_sync, source_id=src.id)
+    assert projected["posters"] == [{"poster": "Todding", "posts": 1}]
+
+
+def test_no_list_means_nothing_to_remove(db_sync, tmp_path):
+    src, _ = _fixture(db_sync, tmp_path, authors=())
+    with pytest.raises(cleanup.PosterCleanupError):
+        cleanup.preview(db_sync, source_id=src.id)
+
+
+def test_the_token_names_what_the_preview_showed():
+    assert cleanup.confirm_token({"posts": 2, "images": 1}) == "remove-2-posts-1-images"

tests/test_download_lane_boot.py

@@ -0,0 +1,71 @@
+"""#4433: only the process consuming `download` clears a restart's leftovers.
+
+The consolidated container boots four lanes side by side. If the scheduler or
+ml lane ran this too, a lane restarting on its own (supervisord restarts a
+crashed program) would close the events of walks that are still running.
+"""
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+import pytest
+
+from backend.app import celery_signals
+
+
+def _consumer(*queues: str):
+    return SimpleNamespace(
+        task_consumer=SimpleNamespace(queues=[SimpleNamespace(name=q) for q in queues])
+    )
+
+
+@pytest.fixture
+def calls(monkeypatch):
+    seen: list[str] = []
+
+    class _Session:
+        def __enter__(self):
+            return self
+
+        def __exit__(self, *exc):
+            return False
+
+        def commit(self):
+            seen.append("commit")
+
+    monkeypatch.setattr(celery_signals, "sync_session_factory", lambda: _Session)
+    monkeypatch.setattr(
+        "backend.app.services.download_recovery.interrupt_orphaned_download_events",
+        lambda session, *, booted_at: seen.append("interrupt") or 0,
+    )
+    monkeypatch.setattr(
+        "backend.app.services.platform_lock.release_all_platform_locks",
+        lambda: seen.append("release") or 0,
+    )
+    return seen
+
+
+def test_the_download_lane_clears_orphans_and_locks(calls):
+    celery_signals._on_worker_ready(sender=_consumer("default", "download", "import"))
+    assert calls == ["interrupt", "commit", "release"]
+
+
+@pytest.mark.parametrize("queues", [("maintenance", "scan"), ("ml",), ("maintenance_long",)])
+def test_other_lanes_leave_downloads_alone(calls, queues):
+    celery_signals._on_worker_ready(sender=_consumer(*queues))
+    assert calls == []
+
+
+def test_unreadable_queues_do_nothing_rather_than_guess(calls):
+    celery_signals._on_worker_ready(sender=SimpleNamespace())
+    assert calls == []
+
+
+def test_a_failure_does_not_stop_the_worker_starting(monkeypatch, calls):
+    def boom(session, *, booted_at):
+        raise RuntimeError("db down")
+
+    monkeypatch.setattr(
+        "backend.app.services.download_recovery.interrupt_orphaned_download_events", boom
+    )
+    celery_signals._on_worker_ready(sender=_consumer("download"))  # must not raise

tests/test_fold_misfiled_attachment_posts_migration.py

@@ -0,0 +1,106 @@
+"""Migration 0114 (#4435): the undated shell post a misfiled attachment made on
+the artist's first Discord source is folded into the real, dated post."""
+import importlib.util
+from datetime import UTC, datetime
+from pathlib import Path
+
+import pytest
+from sqlalchemy import select
+
+from backend.app.models import (
+    Artist,
+    ImageProvenance,
+    Post,
+    PostAttachment,
+    Source,
+)
+from tests.factories import make_image as _img
+
+pytestmark = pytest.mark.integration
+
+_MIGRATION = (
+    Path(__file__).resolve().parents[1]
+    / "alembic" / "versions" / "0114_fold_misfiled_attachment_posts.py"
+)
+
+
+def _fold():
+    spec = importlib.util.spec_from_file_location("m0114", _MIGRATION)
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod.fold_misfiled_attachment_posts
+
+
+def _source(db, artist, channel):
+    s = Source(
+        artist_id=artist.id, platform="discord",
+        url=f"https://discord.com/channels/1/{channel}",
+    )
+    db.add(s)
+    db.flush()
+    return s
+
+
+def _post(db, artist, source, epid, when=None):
+    p = Post(
+        artist_id=artist.id, source_id=source.id, external_post_id=epid,
+        post_date=when,
+        post_url=f"https://discord.com/channels/1/x/{epid}" if when else None,
+    )
+    db.add(p)
+    db.flush()
+    return p
+
+
+def _attach(db, post, sha, name):
+    db.add(PostAttachment(
+        post_id=post.id, artist_id=post.artist_id, sha256=sha,
+        path=f"/att/{sha}", original_filename=name, ext=".rar", size_bytes=1,
+    ))
+    db.flush()
+
+
+def test_shells_fold_into_their_dated_twin_and_nothing_else_moves(db_sync):
+    sent = datetime(2024, 12, 26, 1, 42, tzinfo=UTC)
+    artist = Artist(name="Yellow", slug="yellow")
+    db_sync.add(artist)
+    db_sync.flush()
+    first = _source(db_sync, artist, 100)
+    second = _source(db_sync, artist, 200)
+
+    # The #4435 shape: shell on the first source, real post on the second.
+    shell = _post(db_sync, artist, first, "555")
+    real = _post(db_sync, artist, second, "555", sent)
+    _attach(db_sync, shell, "a" * 64, "pack.rar")
+    # A shell whose attachment the real post already has: dropped, not doubled.
+    shell2 = _post(db_sync, artist, first, "556")
+    real2 = _post(db_sync, artist, second, "556", sent)
+    _attach(db_sync, shell2, "b" * 64, "same.rar")
+    _attach(db_sync, real2, "b" * 64, "same.rar")
+    # Left alone: no dated twin, and an undated post that holds an image.
+    lonely = _post(db_sync, artist, first, "557")
+    _attach(db_sync, lonely, "c" * 64, "lonely.rar")
+    with_image = _post(db_sync, artist, first, "558")
+    _post(db_sync, artist, second, "558", sent)
+    img = _img(db_sync, "d" * 64)
+    db_sync.add(ImageProvenance(image_record_id=img.id, post_id=with_image.id))
+    db_sync.flush()
+    shell_id, shell2_id = shell.id, shell2.id
+
+    folded = _fold()(db_sync.connection())
+    db_sync.expire_all()
+
+    assert folded == 2
+    assert db_sync.get(Post, shell_id) is None
+    assert db_sync.get(Post, shell2_id) is None
+    owners = dict(db_sync.execute(
+        select(PostAttachment.original_filename, PostAttachment.post_id)
+    ).all())
+    assert owners["pack.rar"] == real.id
+    assert owners["lonely.rar"] == lonely.id
+    kept = db_sync.execute(
+        select(PostAttachment.id).where(PostAttachment.post_id == real2.id)
+    ).scalars().all()
+    assert len(kept) == 1
+    assert db_sync.get(Post, lonely.id) is not None
+    assert db_sync.get(Post, with_image.id) is not None

tests/test_importer_attach_in_place.py

@@ -435,3 +435,48 @@ def test_attach_in_place_non_media_routes_to_attachment(importer, db_sync):
     ).scalar_one()
     assert row.ext == ".txt"
     assert row.artist_id == artist.id
+
+
+def test_a_non_media_file_lands_on_the_source_being_downloaded(importer, db_sync):
+    """#4435: a Discord artist has one source per channel. A non-media file
+    downloaded for the SECOND channel was filed under the artist's first
+    Discord source (the (artist, platform) lookup takes the lowest id), as an
+    undated shell post; the real post record then made a second post under
+    the right source. The attachment must follow the source it was fetched for."""
+    from backend.app.models import Post, PostAttachment, Source
+
+    images_root = importer.images_root
+    artist = Artist(name="Yara", slug="yara")
+    db_sync.add(artist)
+    db_sync.flush()
+    first = Source(
+        artist_id=artist.id, platform="discord",
+        url="https://discord.com/channels/1/100",
+    )
+    second = Source(
+        artist_id=artist.id, platform="discord",
+        url="https://discord.com/channels/1/200",
+    )
+    db_sync.add_all([first, second])
+    db_sync.flush()
+
+    rar = images_root / "yara" / "discord" / "rewards" / "20241226_555_01_pack.rar"
+    rar.parent.mkdir(parents=True, exist_ok=True)
+    rar.write_bytes(b"not a real archive, so it is kept as an attachment")
+    rar.with_suffix(rar.suffix + ".json").write_text(
+        '{"category": "discord", "id": "555", "message_id": "555"}'
+    )
+
+    result = importer.attach_in_place(rar, artist=artist, source=second)
+    assert result.status == "attached"
+
+    owner = db_sync.execute(
+        select(Post.source_id, Post.external_post_id)
+        .join(PostAttachment, PostAttachment.post_id == Post.id)
+        .where(PostAttachment.original_filename == rar.name)
+    ).one()
+    assert owner.source_id == second.id
+    assert owner.external_post_id == "555"
+    assert db_sync.execute(
+        select(func.count()).select_from(Post).where(Post.source_id == first.id)
+    ).scalar_one() == 0

tests/test_maintenance.py

@@ -335,26 +335,30 @@ def test_recover_stalled_task_runs_ml_queue_uses_longer_threshold(db_sync):
     """ml-queue tasks (embed_image video branch) legitimately run
     past the default 5-min threshold. The sweep must NOT flag an
     ml-queue task that's only been running 10 min — the override
-    threshold (25 min via QUEUE_STUCK_THRESHOLD_MINUTES) protects
-    in-flight video tagging. Operator-flagged 2026-05-28 after
-    image 6288 (mp4) was marked failed at the 5-min tick mid-run."""
+    threshold (QUEUE_STUCK_THRESHOLD_MINUTES["ml"]) protects in-flight
+    video tagging. Operator-flagged 2026-05-28 after image 6288 (mp4)
+    was marked failed at the 5-min tick mid-run. Read from the table
+    rather than restated: the value moved 25 -> 40 in #4432."""
     from sqlalchemy import select
 
     from backend.app.models import TaskRun
-    from backend.app.tasks.maintenance import recover_stalled_task_runs
+    from backend.app.tasks.maintenance import (
+        QUEUE_STUCK_THRESHOLD_MINUTES,
+        recover_stalled_task_runs,
+    )
 
+    ml_threshold = QUEUE_STUCK_THRESHOLD_MINUTES["ml"]
     now = datetime.now(UTC)
     # 10-min-old ml-queue row: stale by the default 5-min rule but
-    # fresh by the 25-min ml override. Must survive the sweep.
+    # fresh by the ml override. Must survive the sweep.
     ml_fresh_id = _make_task_run(
         db_sync, status="running", queue="ml",
         started_at=now - timedelta(minutes=10),
     )
-    # 30-min-old ml-queue row: past even the ml override. Must be
-    # flagged.
+    # Past even the ml override. Must be flagged.
     ml_stale_id = _make_task_run(
         db_sync, status="running", queue="ml",
-        started_at=now - timedelta(minutes=30),
+        started_at=now - timedelta(minutes=ml_threshold + 5),
     )
     db_sync.commit()
 
@@ -431,9 +435,10 @@ def test_download_stuck_threshold_exceeds_hard_time_limit():
 def test_recover_stalled_task_runs_archive_task_uses_longer_threshold(db_sync):
     """import_archive_file shares the 'import' queue with fast
     single-file import_media_file, so it gets a per-task-name override
-    (40 min) while the import queue stays at the 5-min default. A
-    10-min-old archive task-run must survive; a 50-min-old one is
-    flagged. Operator-flagged 2026-05-28."""
+    (40 min) while the import queue keeps its short threshold (10 min
+    since #4432; import_media_file's hard limit is 6). A 10-min-old
+    archive task-run must survive; a 50-min-old one is flagged.
+    Operator-flagged 2026-05-28."""
     from sqlalchemy import select
 
     from backend.app.models import TaskRun
@@ -441,12 +446,12 @@ def test_recover_stalled_task_runs_archive_task_uses_longer_threshold(db_sync):
 
     archive_name = "backend.app.tasks.import_file.import_archive_file"
     now = datetime.now(UTC)
-    # Fast single-file import on the same queue, 10 min old → flagged
-    # by the default 5-min rule.
+    # Fast single-file import on the same queue, 15 min old → flagged
+    # by the import queue's 10-min threshold.
     media_id = _make_task_run(
         db_sync, status="running", queue="import",
         task_name="backend.app.tasks.import_file.import_media_file",
-        started_at=now - timedelta(minutes=10),
+        started_at=now - timedelta(minutes=15),
     )
     # Archive on the same queue, 10 min old → survives (40-min override).
     archive_fresh_id = _make_task_run(
@@ -713,6 +718,57 @@ def test_recover_stalled_download_skips_fresh(db_sync):
     assert failures == 0
 
 
+def test_download_lane_boot_closes_pre_boot_events_without_blaming_the_source(db_sync):
+    """#4433: a restart SIGKILLs a walk past its stop grace and strands queued
+    ones. At the download lane's boot, everything pending/running from before
+    it ends as `skipped`/interrupted — and the source is left as it was, so it
+    is due on the next tick instead of backed off as a failure."""
+    from sqlalchemy import select
+
+    from backend.app.models import DownloadEvent, Source
+    from backend.app.services.download_recovery import (
+        DOWNLOAD_INTERRUPTED_MESSAGE,
+        interrupt_orphaned_download_events,
+    )
+
+    sid = _make_source(db_sync, slug="rebooted")
+    booted_at = datetime.now(UTC)
+    before = booted_at - timedelta(minutes=5)
+    walking = DownloadEvent(
+        source_id=sid, status="running", started_at=before,
+        metadata_={"live": {"downloaded": 3}},
+    )
+    queued = DownloadEvent(source_id=sid, status="pending", started_at=before)
+    finished = DownloadEvent(source_id=sid, status="ok", started_at=before)
+    # Promoted to running after the boot: download_service resets started_at.
+    fresh = DownloadEvent(
+        source_id=sid, status="running", started_at=booted_at + timedelta(seconds=5),
+    )
+    db_sync.add_all([walking, queued, finished, fresh])
+    db_sync.commit()
+
+    closed = interrupt_orphaned_download_events(db_sync, booted_at=booted_at)
+    db_sync.commit()
+
+    assert closed == 2
+    db_sync.expire_all()
+    for ev in (walking, queued):
+        assert ev.status == "skipped"
+        assert ev.error == DOWNLOAD_INTERRUPTED_MESSAGE
+        assert ev.finished_at is not None
+        assert ev.metadata_["error_type"] == "interrupted"
+    assert walking.metadata_["live"] == {"downloaded": 3}
+    assert finished.status == "ok"
+    assert fresh.status == "running"
+    src = db_sync.execute(
+        select(Source.consecutive_failures, Source.last_error, Source.last_checked_at)
+        .where(Source.id == sid)
+    ).one()
+    assert src.consecutive_failures == 0
+    assert src.last_error is None
+    assert src.last_checked_at is None
+
+
 def test_recover_stalled_download_flips_stale_pending(db_sync):
     """A 2-hour-old pending event flips to error AND the source is bumped
     (consecutive_failures, last_error, last_checked_at) so the next scan

tests/test_patreon_ingester.py

@@ -239,8 +239,8 @@ async def test_tick_downloads_unseen_and_marks_seen(source_id, sync_engine, tmp_
     # plan #704: structured run_stats carry the real counts.
     assert result.run_stats["downloaded_count"] == 2
     assert result.posts_processed == 1
-    # The media wait for phase 3 to import them; only the post key is in yet.
-    assert _count_ledger(sync_engine, source_id) == 1
+    # The media and the post record both wait for phase 3 to import them (#4436).
+    assert _count_ledger(sync_engine, source_id) == 0
     result.mark_seen_after_import()
     # 2 media keys + 1 synthetic post key (body/links recaptured per post).
     assert _count_ledger(sync_engine, source_id) == 3
@@ -648,8 +648,10 @@ async def test_recovery_tier2_disk_still_skips(source_id, sync_engine, tmp_path)
     assert result.files_downloaded == 0
     assert downloader.download_calls == 0
     assert result.written_paths == []
-    # Disk-skip reconciles the media key + the synthetic post key (recovery
-    # recaptures the body/links per post) = 2.
+    # Disk-skip reconciles the media key at once; the synthetic post key
+    # (recovery recaptures the body/links per post) waits for phase 3 (#4436).
+    assert _count_ledger(sync_engine, source_id) == 1
+    result.mark_seen_after_import()
     assert _count_ledger(sync_engine, source_id) == 2
 
 
@@ -943,8 +945,10 @@ async def test_a_run_that_dies_before_import_leaves_its_media_unmarked(
                     _FakeDownloader(tmp_path))
     ing.run(source_id=source_id, campaign_id="c1", artist_slug="ingest",
             url="https://patreon.com/ingest", mode="tick")
-    # Phase 3 never ran, so `mark_seen_after_import` never did: only the post key.
-    assert _count_ledger(sync_engine, source_id) == 1
+    # Phase 3 never ran, so `mark_seen_after_import` never did: neither the
+    # media nor the post record is marked (#4436 — the record, marked at write
+    # time, left the post undated for good once the run died before phase 3).
+    assert _count_ledger(sync_engine, source_id) == 0
 
     # The next walk finds the file on disk with no record, and imports it.
     ing2 = _ingester(sync_engine, tmp_path, _FakeClient([(None, [("p1", [m1])])]),
@@ -954,6 +958,7 @@ async def test_a_run_that_dies_before_import_leaves_its_media_unmarked(
     assert result.written_paths == [str(tmp_path / "p1_1.jpg")]
     assert result.files_downloaded == 0          # not fetched again
     assert "on disk but never imported: p1_1.jpg" in result.stdout
+    assert len(result.post_record_paths) == 1    # the record is written again
     result.mark_seen_after_import()
     assert _count_ledger(sync_engine, source_id) == 2
 
@@ -1200,7 +1205,10 @@ async def test_tick_captures_media_less_post_once(source_id, sync_engine, tmp_pa
     assert result.success is True
     assert len(result.post_record_paths) == 1
     assert downloader.post_records == 1
-    # The synthetic `post:ptext` key was marked seen (gates re-capture).
+    # The synthetic `post:ptext` key is marked once phase 3 has upserted the
+    # record (#4436), and then gates re-capture.
+    assert _count_ledger(sync_engine, source_id) == 0
+    result.mark_seen_after_import()
     assert _count_ledger(sync_engine, source_id) == 1
 
     # Second walk: already recorded → gated, no re-write, no new ledger row.
@@ -1540,6 +1548,7 @@ async def test_revisits_do_not_feed_the_body_drift_canary(
         url="https://patreon.com/ingest", mode="tick", revisit_days=30,
     )
     assert first.success is True
+    first.mark_seen_after_import()  # phase 3 ran
 
     # Second walk: every post is a revisit, and every body comes back empty.
     client2 = _FakeClient([(None, posts)], published=published, empty_body=True)

tests/test_post_feed_service.py

@@ -283,6 +283,27 @@ async def test_scroll_item_shape_minimal(db):
     assert "description_full" not in item
 
 
+@pytest.mark.asyncio
+async def test_a_discord_post_names_its_channel(db):
+    """#4481: the card says which channel a message came from. Read from the
+    record's `channel`; never on another platform, even with the same key."""
+    artist = await _seed_artist(db, "todding-ch")
+    dsrc = await _seed_source(db, artist.id, "discord", "https://discord.com/channels/1/2")
+    psrc = await _seed_source(db, artist.id, "patreon", "https://p/todding-ch")
+    now = datetime.now(UTC)
+    d = await _seed_post(db, dsrc.id, external_id="D1", post_date=now)
+    d.raw_metadata = {"category": "discord", "channel": "banana-land"}
+    blank = await _seed_post(db, dsrc.id, external_id="D2", post_date=now)
+    blank.raw_metadata = {"category": "discord", "channel": "  "}
+    p = await _seed_post(db, psrc.id, external_id="P1", post_date=now)
+    p.raw_metadata = {"channel": "not-discord"}
+    await db.commit()
+
+    page = await PostFeedService(db).scroll(cursor=None, limit=10, artist_id=artist.id)
+    by_id = {it["external_post_id"]: it["channel"] for it in page["items"]}
+    assert by_id == {"D1": "banana-land", "D2": None, "P1": None}
+
+
 @pytest.mark.asyncio
 async def test_scroll_surfaces_translation_fields(db):
     # #143: a translated post exposes the translated title/description + source

tests/test_process_auto_apply.py

@@ -126,53 +126,17 @@ def test_process_sweep_flags_conflict_with_process_mode(db_sync):
 
 
 def test_process_auto_source_never_trains_head(db_sync):
-    # The runaway break: provisional wip tags (process sweep 'process_auto', soft
-    # title 'wip_title_soft') are NOT training positives; a HARD title-heuristic /
-    # manual one IS. So the head learns only from trusted labels, never its own
-    # output or the low-precision sketch/doodle tier (#1464 + #1474).
+    # The runaway break: provisional wip tags (process sweep 'process_auto') are NOT
+    # training positives; a title-heuristic / manual one IS. So the head learns only
+    # from trusted labels, never its own output (#1464).
     wip = _system_tag(db_sync, "wip")
     auto_img = _img(db_sync, "f" * 64, _emb(0))
-    soft_img = _img(db_sync, "9" * 64, _emb(2))
     title_img = _img(db_sync, "0" * 64, _emb(1))
     db_sync.execute(image_tag.insert().values(
         image_record_id=auto_img.id, tag_id=wip.id, source="process_auto"))
-    db_sync.execute(image_tag.insert().values(
-        image_record_id=soft_img.id, tag_id=wip.id, source="wip_title_soft"))
     db_sync.execute(image_tag.insert().values(
         image_record_id=title_img.id, tag_id=wip.id, source="wip_title"))
     db_sync.commit()
     positives = set(_ids_with_tag(db_sync, wip.id))
     assert title_img.id in positives       # trusted HARD label trains the head
     assert auto_img.id not in positives    # its own auto-applied output does NOT
-    assert soft_img.id not in positives    # low-precision soft tier does NOT
-
-
-def test_soft_wip_conflict_audit_flags_ring_loud(db_sync):
-    # A soft-tagged image (sketch/doodle title) that ALSO scores high on a content
-    # head is probably finished art mis-tagged — flagged for review; a quiet one is not.
-    from backend.app.services.ml.heads import soft_wip_conflict_audit
-
-    s = db_sync.execute(select(MLSettings).where(MLSettings.id == 1)).scalar_one()
-    s.process_conflict_threshold = 0.6
-    wip = _system_tag(db_sync, "wip")
-    content = Tag(name="looksreal", kind=TagKind.general)
-    db_sync.add(content)
-    db_sync.flush()
-    _head(db_sync, content.id, 0, weight=1.0)   # sigmoid(1)=0.73 > 0.6 conflict
-    ring = _img(db_sync, "1" * 64, _emb(0))      # scores on the content head
-    quiet = _img(db_sync, "2" * 64, _emb(5))     # orthogonal → 0.5 < 0.6
-    for img in (ring, quiet):
-        db_sync.execute(image_tag.insert().values(
-            image_record_id=img.id, tag_id=wip.id, source="wip_title_soft"))
-    db_sync.commit()
-
-    res = soft_wip_conflict_audit(db_sync)
-    assert res["n_flagged"] == 1
-    flag = db_sync.execute(
-        select(PresentationReview).where(PresentationReview.image_record_id == ring.id)
-    ).scalar_one()
-    assert flag.mode == "process"
-    assert flag.conflict_tag_id == content.id
-    assert db_sync.execute(
-        select(PresentationReview).where(PresentationReview.image_record_id == quiet.id)
-    ).scalar_one_or_none() is None

tests/test_redate_images_migration.py

@@ -0,0 +1,70 @@
+"""Migration 0113 (#4431): images linked to a post before its date arrived get
+the post's date back. Runs the migration's data step against real rows."""
+import importlib.util
+from datetime import UTC, datetime
+from pathlib import Path
+
+import pytest
+
+from backend.app.models import Artist, ImageProvenance, ImageRecord, Post
+from tests.factories import make_image as _img
+
+pytestmark = pytest.mark.integration
+
+_MIGRATION = (
+    Path(__file__).resolve().parents[1]
+    / "alembic" / "versions" / "0113_redate_native_images.py"
+)
+
+
+def _redate():
+    spec = importlib.util.spec_from_file_location("m0113", _MIGRATION)
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod.redate_images
+
+
+def _post(db, artist, epid, when):
+    p = Post(artist_id=artist.id, external_post_id=epid, post_date=when)
+    db.add(p)
+    db.flush()
+    return p
+
+
+def _link(db, img, post, *, primary):
+    db.add(ImageProvenance(image_record_id=img.id, post_id=post.id))
+    if primary:
+        img.primary_post_id = post.id
+    db.flush()
+
+
+def test_redate_images_from_their_posts(db_sync):
+    sent = datetime(2024, 3, 1, 18, 30, tzinfo=UTC)
+    earlier = datetime(2023, 1, 5, tzinfo=UTC)
+    artist = Artist(name="Alice", slug="alice")
+    db_sync.add(artist)
+    db_sync.flush()
+    undated = _post(db_sync, artist, "u1", None)
+    dated = _post(db_sync, artist, "d1", sent)
+    repost = _post(db_sync, artist, "r1", earlier)
+
+    stale = _img(db_sync, "a" * 64)          # primary post dated, image not
+    reposted = _img(db_sync, "b" * 64)       # also in an earlier post
+    orphan = _img(db_sync, "c" * 64)         # only an undated post
+    _link(db_sync, stale, dated, primary=True)
+    _link(db_sync, reposted, dated, primary=True)
+    _link(db_sync, reposted, repost, primary=False)
+    _link(db_sync, orphan, undated, primary=True)
+    orphan_before = orphan.effective_date
+
+    _redate()(db_sync.connection())
+    db_sync.expire_all()
+
+    stale = db_sync.get(ImageRecord, stale.id)
+    reposted = db_sync.get(ImageRecord, reposted.id)
+    orphan = db_sync.get(ImageRecord, orphan.id)
+    assert stale.effective_date == sent
+    assert stale.earliest_post_date == sent
+    assert reposted.effective_date == sent             # the primary post's date
+    assert reposted.earliest_post_date == earlier      # the earliest post's date
+    assert orphan.effective_date == orphan_before      # no date to take

tests/test_release_notes.py

@@ -14,6 +14,7 @@ re-implementation of it.
 """
 from __future__ import annotations
 
+import re
 import subprocess
 from pathlib import Path
 
@@ -162,6 +163,15 @@ def test_the_first_release_describes_the_product_instead_of_diffing(shaped_histo
     assert not [ln for ln in body.split("\n") if ln.startswith("- work landing")]
 
 
+@pytest.mark.parametrize("tag", ["v2026.08.28.2208", "v2026.08.29.1000"])
+def test_the_release_page_cites_no_internal_rule_numbers(shaped_history, tag):
+    """The release page is read by strangers. "rule 145" names a record in the
+    operator's own notes, which a reader cannot open — say what the rule means
+    instead. Covers the first-release overview and the changelog body."""
+    body = body_of(notes(tag, cwd=shaped_history))
+    assert not re.search(r"\brule\s+\d+", body, re.IGNORECASE), body
+
+
 def test_the_overview_is_readmes_words_not_a_second_copy(shaped_history):
     """Two hand-maintained descriptions of one product drift and nothing
     catches it. The release page quotes README.md so there is one source."""

tests/test_retire_soft_wip_migration.py

@@ -0,0 +1,90 @@
+"""Migration 0112 (milestone 430, #4428): retiring the sketch/doodle WIP title tier.
+
+Runs the migration's data step against real rows. The soft tags the operator stood
+behind (confirmed, or kept through the review strip) survive as `manual`; the rest go,
+and so do the unresolved review cards whose tag went with them. Hard title tags and
+their flags are untouched.
+"""
+import importlib.util
+from datetime import UTC, datetime
+from pathlib import Path
+
+import pytest
+from sqlalchemy import select
+
+from backend.app.models import PresentationReview, TagPositiveConfirmation
+from backend.app.models.tag import image_tag
+from backend.app.services.wip_title import resolve_wip_tag_id
+from tests.factories import make_image as _img
+
+pytestmark = pytest.mark.integration
+
+_MIGRATION = (
+    Path(__file__).resolve().parents[1]
+    / "alembic" / "versions" / "0112_retire_soft_wip_title.py"
+)
+
+
+def _retire():
+    spec = importlib.util.spec_from_file_location("m0112", _MIGRATION)
+    mod = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(mod)
+    return mod.retire_soft_wip_tags
+
+
+def _source(db, image_id, tag_id):
+    return db.execute(
+        select(image_tag.c.source)
+        .where(image_tag.c.image_record_id == image_id)
+        .where(image_tag.c.tag_id == tag_id)
+    ).scalar_one_or_none()
+
+
+def _review(db, image_id, tag_id):
+    return db.execute(
+        select(PresentationReview)
+        .where(PresentationReview.image_record_id == image_id)
+        .where(PresentationReview.tag_id == tag_id)
+    ).scalar_one_or_none()
+
+
+def _flag(db, image_id, tag_id, *, resolved):
+    db.add(PresentationReview(
+        image_record_id=image_id, tag_id=tag_id, conflict_score=0.8, mode="process",
+        resolved_at=datetime.now(UTC) if resolved else None,
+    ))
+
+
+def test_retire_soft_wip_keeps_human_judged_and_clears_the_rest(db_sync):
+    wip = resolve_wip_tag_id(db_sync)
+    plain = _img(db_sync, "a" * 64)       # soft, never looked at → removed
+    confirmed = _img(db_sync, "b" * 64)   # soft + confirmed → kept as manual
+    kept = _img(db_sync, "c" * 64)        # soft + "Keep tag" in the strip → manual
+    pending = _img(db_sync, "d" * 64)     # soft + open card → tag and card removed
+    hard = _img(db_sync, "e" * 64)        # hard title tag + open card → untouched
+    for img in (plain, confirmed, kept, pending):
+        db_sync.execute(image_tag.insert().values(
+            image_record_id=img.id, tag_id=wip, source="wip_title_soft"))
+    db_sync.execute(image_tag.insert().values(
+        image_record_id=hard.id, tag_id=wip, source="wip_title"))
+    db_sync.add(TagPositiveConfirmation(image_record_id=confirmed.id, tag_id=wip))
+    _flag(db_sync, kept.id, wip, resolved=True)
+    _flag(db_sync, pending.id, wip, resolved=False)
+    _flag(db_sync, hard.id, wip, resolved=False)
+    db_sync.flush()
+
+    _retire()(db_sync.connection())
+    db_sync.expire_all()
+
+    assert _source(db_sync, plain.id, wip) is None
+    assert _source(db_sync, confirmed.id, wip) == "manual"
+    assert _source(db_sync, kept.id, wip) == "manual"
+    assert _source(db_sync, pending.id, wip) is None
+    assert _source(db_sync, hard.id, wip) == "wip_title"
+
+    assert _review(db_sync, pending.id, wip) is None
+    assert _review(db_sync, kept.id, wip) is not None     # resolved history stays
+    assert _review(db_sync, hard.id, wip) is not None     # its tag is still on
+    assert db_sync.execute(
+        select(image_tag.c.image_record_id).where(image_tag.c.source == "wip_title_soft")
+    ).first() is None

tests/test_sidecar_import.py

@@ -382,3 +382,84 @@ def test_external_links_not_duplicated_on_reimport(importer, import_layout):
     assert importer.session.execute(
         select(func.count()).select_from(ExternalLink)
     ).scalar_one() == 1
+
+
+def test_post_record_redates_images_linked_before_it(importer, import_layout):
+    """#4431: the native ingesters import a message's media before its record,
+    and only the record carries the date. The images start on their download
+    time; when the record lands they take the post's date."""
+    import_root, _ = import_layout
+    artist = Artist(name="Alice", slug="alice")
+    importer.session.add(artist)
+    importer.session.flush()
+    m = import_root / "Alice" / "20240301_123_01_art.jpg"
+    _split(m, "v")
+    _sidecar(m, {"category": "discord", "message_id": "123"})
+    r = importer.import_one(m)
+    assert r.status == "imported"
+    rec = importer.session.get(ImageRecord, r.image_id)
+    post = importer.session.execute(select(Post)).scalar_one()
+    assert post.post_date is None
+    download_time = rec.effective_date
+
+    sc = import_root / "Alice" / "20240301_123_post.json"
+    sc.write_text(json.dumps({
+        "category": "discord", "message_id": "123", "message": "",
+        "date": "2024-03-01T18:30:00.000000+00:00",
+    }))
+    assert importer.upsert_post_record(sc, artist=artist) is True
+    importer.session.expire_all()
+    rec = importer.session.get(ImageRecord, r.image_id)
+    post = importer.session.execute(select(Post)).scalar_one()
+    assert post.post_date is not None
+    assert post.post_date != download_time
+    assert rec.effective_date == post.post_date
+    assert rec.earliest_post_date == post.post_date
+
+
+def test_an_undated_post_is_dated_from_the_record_its_walk_left_on_disk(
+    importer, import_layout,
+):
+    """#4436: a walk killed before phase 3 wrote the message's record to disk
+    but never upserted it, and marked it seen, so no later tick fixed it. The
+    repair finds the record under the artist's folder and dates the post — and
+    its images — under the post's own source."""
+    from backend.app.services.post_record_repair import date_posts_from_records
+
+    import_root, images_root = import_layout
+    artist = Artist(name="Alice", slug="alice")
+    importer.session.add(artist)
+    importer.session.flush()
+    importer.session.add(Source(
+        artist_id=artist.id, platform="discord",
+        url="https://discord.com/channels/1/100",
+    ))
+    importer.session.flush()
+    m = import_root / "Alice" / "20240301_123_01_art.jpg"
+    _split(m, "v")
+    _sidecar(m, {"category": "discord", "message_id": "123"})
+    r = importer.import_one(m)
+    assert r.status == "imported"
+    post = importer.session.execute(select(Post)).scalar_one()
+    assert post.post_date is None and post.source_id is not None
+
+    channel = images_root / "alice" / "discord" / "rewards"
+    channel.mkdir(parents=True)
+    (channel / "20240301_123_post.json").write_text(json.dumps({
+        "category": "discord", "message_id": "123", "message": "",
+        "date": "2024-03-01T18:30:00.000000+00:00",
+    }))
+    (channel / "20240301_999_post.json").write_text("not json")  # skipped, not fatal
+
+    summary = date_posts_from_records(importer.session, importer, images_root)
+
+    assert summary == {"undated": 1, "dated": 1, "no_record": 0}
+    importer.session.expire_all()
+    post = importer.session.execute(select(Post)).scalar_one()
+    rec = importer.session.get(ImageRecord, r.image_id)
+    assert post.post_date is not None
+    assert rec.earliest_post_date == post.post_date
+    # Nothing left undated: the next sweep is an empty query.
+    assert date_posts_from_records(importer.session, importer, images_root) == {
+        "undated": 0, "dated": 0, "no_record": 0,
+    }

tests/test_wip_title.py

@@ -8,7 +8,7 @@ negative cases (substrings like ``swipe`` / ``wiped``) are the load-bearing ones
 """
 import pytest
 
-from backend.app.services.wip_title import matches_soft_wip_title, matches_wip_title
+from backend.app.services.wip_title import matches_wip_title
 
 
 @pytest.mark.parametrize("title", [
@@ -48,29 +48,3 @@ def test_matches_positive(title):
 ])
 def test_matches_negative(title):
     assert matches_wip_title(title) is False
-
-
-@pytest.mark.parametrize("title", [
-    "quick sketch",
-    "Nami sketch",
-    "morning doodle",
-    "some doodles",
-    "sketches from today",
-    "a little scribble",
-    "SKETCH",
-])
-def test_soft_matches_positive(title):
-    assert matches_soft_wip_title(title) is True
-
-
-@pytest.mark.parametrize("title", [
-    None,
-    "",
-    "sketchbook tour",              # 'sketch' inside sketchbook — must NOT match
-    "kadoodle mascot",              # 'doodle' mid-word
-    "the final piece",
-    "WIP",                          # a HARD cue is not a SOFT cue
-    "prescribed colours",           # 'scrib' inside prescribed — must NOT match
-])
-def test_soft_matches_negative(title):
-    assert matches_soft_wip_title(title) is False

tests/test_wip_title_tagging.py

@@ -10,7 +10,6 @@ from backend.app.celery_app import celery
 from backend.app.models import Artist, ImageProvenance, ImageRecord, Post, Source
 from backend.app.models.tag import image_tag
 from backend.app.services.wip_title import (
-    WIP_TITLE_SOFT_SOURCE,
     apply_wip_image_tags,
     resolve_wip_tag_id,
 )
@@ -108,14 +107,3 @@ def test_backfill_tags_only_wip_titled_posts(db_sync):
 
     # Idempotent: a second sweep finds the tag already present and applies nothing.
     assert backfill_wip_title_tags.apply().get() == 0
-
-
-def test_apply_soft_source_stamps_wip_title_soft(db_sync):
-    # The soft tier (#1474) stamps a distinct provisional source.
-    tag_id = resolve_wip_tag_id(db_sync)
-    rec = _img(db_sync)
-    db_sync.commit()
-    assert apply_wip_image_tags(
-        db_sync, [rec.id], tag_id, source=WIP_TITLE_SOFT_SOURCE
-    ) == 1
-    assert _wip_source(db_sync, rec.id, tag_id) == "wip_title_soft"