feat: genre mixes pick specific genres that don't share songs (#6933 )

The shelf had four mixes built largely from the same lo-fi beats: about 1,250 tracks carry Hip Hop, Lo-Fi, Instrumental, Downtempo and four more tags at once, and the near-duplicate guard compared artists, not songs, so each tag passed as its own channel. Genre selection now works on songs: - ListGenreMixCandidates returns each genre's track ids instead of its artist ids. - A broad genre, one whose songs mostly also carry clearly narrower candidates (Rock over Pop Punk and Ska Punk), is considered after the specific genres of its tier. - A genre is kept only when at least half its songs are not already in a kept genre. - Each mix leaves out songs tagged with a genre kept before it (ListGenreMixTracks exclude_genres), so a song is in one mix at most. The tiers, the minimum shelf and the minimum mix length are unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
feat: genre mixes lean toward what the listener likes (#6921 )
2026-11-07 14:55:19 -05:00 · 2026-11-06 14:21:04 -05:00 · 2026-11-06 11:55:59 -05:00 · 2026-11-06 10:30:42 -05:00 · 2026-11-06 10:22:59 -05:00 · 2026-11-05 22:39:29 -05:00
1042 changed files with 19552 additions and 7509 deletions
@@ -9,12 +9,8 @@ web/build
 # The Android client — built by its own job, never from this context. The APK
 # reaches the image through client/, downloaded as a CI artifact, so nothing
 # here reads android/ sources.
-#
+# Excluded so the Gradle project neither bloats the context nor busts the
-# This block named `flutter_client/` until 2026-09-10 and lost its PATTERN when
+# `COPY . .` layer on every Android-only change.
 # that tree was deleted, leaving a comment describing an exclusion that was no
 # longer happening. android/ never took its place, so 4.1 MB of Gradle project
 # has been entering the context and busting the `COPY . .` layer on every
 # Android-only change.
 android/
 # Local `make build` output — an 18 MB binary the image never uses, since the
@@ -1,12 +1,11 @@
-# Minstrel environment variable overrides.
+# Environment for running the server outside Docker (`go run ./cmd/minstrel`).
-# Copy to .env for docker compose, or export before `go run ./cmd/minstrel`.
+# The values match the Postgres in docker-compose.yml.
 # Values shown are sensible defaults for the local docker-compose postgres.
-SMARTMUSIC_SERVER_ADDRESS=:4533
+MINSTREL_SERVER_ADDRESS=:4533
-SMARTMUSIC_DATABASE_URL=postgres://minstrel:minstrel@localhost:5432/minstrel?sslmode=disable
+MINSTREL_DATABASE_URL=postgres://minstrel:minstrel@localhost:5432/minstrel?sslmode=disable
-SMARTMUSIC_LOG_LEVEL=info
+MINSTREL_LOG_LEVEL=info
-SMARTMUSIC_LOG_FORMAT=text
+MINSTREL_LOG_FORMAT=text
-# Set this when running `go test ./...` without -short to exercise the
+# Runs the database tests in `go test ./...` (without -short). Use a separate
-# migration test against a running postgres.
+# database: the tests truncate every table.
-# MINSTREL_TEST_DATABASE_URL=postgres://minstrel:minstrel@localhost:5432/minstrel?sslmode=disable
+# MINSTREL_TEST_DATABASE_URL=postgres://minstrel:minstrel@localhost:5432/minstrel_test?sslmode=disable
@@ -2,50 +2,50 @@ name: release
 # Builds and pushes the minstrel container image to the Gitea registry.
 #
-#   push to dev                  → :dev            (freshly-built dev APK bundled)
+#   push to dev                  → :dev             (freshly-built dev APK bundled)
-#   push to main                 → :latest + :<sha> (latest-release APK bundled)
+#   push to main                 → :latest + :<sha> (freshly-built stable APK bundled)
-#   push tag vYYYY.MM.DD.HHMM    → :latest          (fresh APK bundled)
+#   push tag vYYYY.MM.DD.HHMM    → :latest          (fresh APK bundled, and attached to the Release)
 #   workflow_dispatch            → manual trigger (same rules based on the ref)
 #
-# That is the whole tag map, and it is family rule 145 + 147 as written.
+# That is the whole tag map.
 #
 # :<sha> on main is the ROLLBACK UNIT — every production commit addressable
 # without a release ceremony. It is minted only on main, where rollback is
-# actually worth having: merges are gated (rule 2) so they number in the dozens
+# actually worth having: merges to main are deliberate, so they number in the
-# per year, while on dev they would be one per push, forever, for a channel
+# dozens per year, while on dev they would be one per push, forever, for a
-# whose entire contract is that it moves.
+# channel whose entire contract is that it moves.
 #
-# There are NO :<version> image tags. This repo published :vYYYY.MM.DD.HHMM
+# There are NO :<version> image tags. Git and the build's own self-reported
-# until 2026-09-10 and it was the inverse of the rule on both counts — minting
+# version answer "which build is this"; a third name for the same thing is
-# a version tag nobody pinned while the rollback unit the rule names did not
+# upkeep for a model we do not run. Only the APK needs version numbers, for
-# exist here at all. Git and the build's own self-reported version answer
+# its update process.
 # "which build is this"; a third name for the same thing is upkeep for a model
 # we do not run. Operator, 2026-09-10: "only things like the APK need that kind
 # of versioning for their update process."
 #
-# There is no :main either. :latest tracks main's tip with no gate between them
+# There is no :main either. :latest tracks main's tip with no gate between
-# (rule 147), so a second name for the same image sends readers looking for a
+# them, so a second name for the same image sends readers looking for a
 # distinction that does not exist.
 #
-# The dev channel exists so testing a build does not require shipping one.
+# The dev channel exists so testing a build does not require shipping one:
-# Before it, the only way to get an APK onto a phone was to cut a release,
+# without it the only way to get an APK onto a phone is to cut a release,
-# which made `main` the staging area by default. `:dev` carries its own
+# which makes `main` the staging area. `:dev` carries its own freshly-built
-# freshly-built APK, signed with the SAME key as release builds — a different
+# APK, signed with the SAME key as release builds — a different key cannot
-# key cannot install over the stable app, so anyone crossing channels would
+# install over the stable app, so anyone crossing channels would have to
-# have to uninstall and lose their data.
+# uninstall and lose their data.
 #
 # :dev is published ALONE, with no per-commit tag. A rolling channel is
 # rolling by definition; a commit-addressable image for it would be a
 # rollback target nobody ever pulls, kept forever. Recovery on dev is to fix
 # forward.
 #
-# Note what this repo does NOT need: a cross-repo dispatch to refresh the
+# No cross-repo dispatch is needed to refresh a channel when its bundled APK
-# channel when its bundled APK is rebuilt. That mechanism exists elsewhere in
+# is rebuilt: Minstrel is a monorepo, so one push builds the APK and the
-# the family because the app and the server live in separate repos. Minstrel
+# image in the same run from the same commit, and the channel cannot go
-# is a monorepo — one push builds the APK and the image in the same run from
+# stale against its own artifact.
-# the same commit, so the channel cannot go stale against its own artifact.
+#
-# The requirement is satisfied structurally; copying the mechanism would add
+# Every branch build carries the app built from its own commit, so a merge to
-# a moving part to fix a problem that does not exist here.
+# main is all it takes to put a new app in front of stable phones: `:latest`
 # serves it from /api/client/apk and the in-app update offers it. A release
 # is an optional bookmark — a named point in history with the APK attached
 # for download — never a step the app has to wait for.
 #
 # Release model: the tag IS the artifact's version name with a `v` in front.
 # `v2026.09.10.1432` and `2026.09.10.1432` are the same string, derived from
@@ -55,43 +55,30 @@ name: release
 #
 # TAGS ARE IMMUTABLE. Never move, retarget or delete a published tag. A
 # same-day second release is not a collision — HHMM makes every tag unique
-# by construction, so the answer is simply another tag.
+# by construction, so the answer is simply another tag. Anyone installing
-#
+# from a moved tag would hold something the tag no longer points at, which
-# This block used to say the opposite: that the per-day tag was
+# is a worse failure than an extra row in the tag list.
 # "intentionally mutable" and that a same-day re-cut should
 # `git push -f origin vYYYY.MM.DD`. That instruction is what the family
 # rulebook now forbids outright, and it has incidents behind it — moving a
 # same-day tag forward once took a published release down with it. Anyone
 # installing from a tag is holding something the tag no longer points at,
 # which is a worse failure than an extra row in the tag list.
 #
 # :latest is updated by every main push AND every tag push, so it always
 # reflects the newest blessed image.
 #
-# APK pipeline: on tag pushes the android-release job builds + signs the
+# APK pipeline: on every push — dev, main and tags alike — the
-# Android APK and uploads it as a workflow artifact. The image-release
+# android-release job builds + signs the Android APK and uploads it as a
-# job declares `needs: android-release`, so the docker image cannot
+# workflow artifact. The image-release job declares `needs: android-release`
-# start building until the APK is guaranteed-ready — no polling, no
+# and requires its success, so the docker image cannot start building until
-# race, no silent-failure mode. Attaching the APK to the gitea Release is
+# the APK is guaranteed-ready — no polling, no race, no silent-failure mode,
-# its own job (release-assets), behind the test gate below.
+# and no image that moves a channel without an app inside it. Attaching the
 # APK to the gitea Release is its own job (release-assets), tags only, behind
 # the test gate below.
 #
-# :latest always carries an APK. Because every main push also moves
+# THE GATE. Every verifying lane lives in this file —
 # :latest (not just tags), a main build with no APK would silently strip
 # the in-app update channel off :latest until the next release. So on
 # non-tag builds image-release pulls the MOST RECENT release's signed APK
 # AND the version sidecar published beside it — the recorded values, not
 # recomputed ones — so no rebuild is needed, just a rebundle. Tag builds
 # keep bundling their own freshly-built APK.
 #
 # THE GATE (rule 177, M462 #4984). Every verifying lane lives in this file —
 # Go (vet, lint, short tests), the Postgres integration suite, the web app
 # (npm audit, svelte-check, vitest), Android (ktlint, detekt, unit tests) and
 # govulncheck — and every job that publishes something names each of them in
 # `needs:` and requires `success` from each, by name. Nothing publishes on red.
 #
-# They used to be three separate workflows (test-go, test-web, android) on the
+# One workflow, because separate workflows cannot see each other's verdict:
-# same push trigger as this one. Separate workflows cannot see each other's
+# :dev would mean "it built", never "it passed", and a red test run and a
 # verdict, so :dev meant "it built", never "it passed": a red test run and a
 # fresh :dev could carry the same timestamp. One graph is the only place the
 # edge can be written.
 #
@@ -125,10 +112,9 @@ on:
        type: boolean
        default: false
-# A rapid re-push to main should supersede the in-flight build — the
+# A rapid re-push to main supersedes the in-flight build: the later commit
-# operator explicitly wants the later commit to win. Tags no longer enter
+# wins. Tags are immutable and unique, so no tag build can be superseded by
-# into this: they are immutable and unique, so no tag build can ever be
+# another run on the same ref.
 # superseded by another run on the same ref.
 concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
@@ -173,14 +159,14 @@ jobs:
  # Full `go test -race` against an ephemeral Postgres.
  #
  # DB wiring follows the act_runner shared-daemon pattern: the runner's Docker
-  # daemon also runs the operator's dev compose stack, so service containers
+  # daemon also runs a dev compose stack, so service containers get NO
-  # get NO published ports (collision) and no service-name DNS. We discover the
+  # published ports (collision) and no service-name DNS. We discover the
  # service container through the mounted docker socket and reach it by bridge
  # IP. The exactly-one assertion is a hard guard — pointing tests at the dev
-  # Postgres would truncate it (the disaster Fable #339 exists to prevent).
+  # Postgres would truncate it.
  #
-  # The key stays `integration` with no `name:` (rule 80): act_runner derives
+  # The key stays `integration` with no `name:`: act_runner derives the
-  # the service container's name from the job's display name.
+  # service container's name from the job's display name.
  #
  # `web/build/` has a committed placeholder index.html so go:embed succeeds
  # without the SPA being built first.
@@ -195,7 +181,7 @@ jobs:
          POSTGRES_USER: minstrel
          POSTGRES_PASSWORD: minstrel
          POSTGRES_DB: minstrel_test
-        # No `ports:` — the runner shares the operator's dev compose
+        # No `ports:` — the runner shares the dev compose
        # Docker daemon; publishing a fixed host port collides.
    steps:
@@ -209,13 +195,13 @@ jobs:
          # mounted docker socket. act_runner attaches the job
          # container and its service container(s) to a shared per-job
          # network, so scope discovery to a postgres that sits on a
-          # network THIS job container is also on. The old
+          # network THIS job container is also on. A name filter alone
-          # `--filter name=integration` matched EVERY concurrent
+          # would match EVERY concurrent integration run's postgres (a dev
-          # integration run's postgres (a dev push + the main-merge run
+          # push and a main-merge run overlapping give 2 candidates and a
-          # overlap → 2 candidates → false "expected exactly 1" abort).
+          # false "expected exactly 1" abort). The dev compose
-          # The operator's dev compose `minstrel-postgres-*` is never on
+          # `minstrel-postgres-*` is never on this job's network; skip it
-          # this job's network; skip it explicitly as belt-and-suspenders
+          # explicitly as belt-and-suspenders (a wrong target would
-          # (a wrong target would truncate real data).
+          # truncate real data).
          SELF=$(cat /etc/hostname)
          SELF_NETS=$(docker inspect -f '{{range $k,$v := .NetworkSettings.Networks}}{{$k}} {{end}}' "$SELF")
          test -n "$SELF_NETS"
@@ -236,11 +222,11 @@ jobs:
          export MINSTREL_TEST_DATABASE_URL="postgres://minstrel:minstrel@${PG_IP}:5432/minstrel_test?sslmode=disable"
          # Wait for Postgres to accept connections. Asked of the service
-          # container itself: the run: shell is dash (rule 81), where the
+          # container itself: the run: shell is dash, where a `/dev/tcp`
-          # old `/dev/tcp` probe never connects and the loop silently
+          # probe never connects and the loop would silently burn its full
-          # burned its full two minutes on every run.
+          # two minutes.
          #
-          # Over TCP (-h 127.0.0.1), not the unix socket (#5426). On first
+          # Over TCP (-h 127.0.0.1), not the unix socket. On first
          # boot the image's entrypoint runs initdb under a temporary server
          # that listens on the socket only, then stops it and starts the
          # real one. A socket probe can catch the temporary server, and the
@@ -267,7 +253,7 @@ jobs:
          #    synchronous_commit is user-context, so pg_reload_conf() picks
          #    all three up with no restart.
          # Non-fatal: a failure degrades to "slower", never red CI. But
-          # slower is ~15x on internal/api (#5426), so retry a few times and
+          # slower is ~15x on internal/api, so retry a few times and
          # print what took effect.
          relaxed=""
          for i in 1 2 3 4 5; do
@@ -291,10 +277,10 @@ jobs:
          # every integration package TRUNCATEs the one shared test DB;
          # concurrent package binaries → TRUNCATE deadlocks. Serialize
          # package execution (the documented local invocation too).
-          # -timeout 20m: internal/api alone takes ~6.5 min under -race on
+          # -timeout 20m: internal/api alone takes several minutes under
-          # an idle runner, and a dev and a main run sharing the runner
+          # -race on an idle runner, and a dev and a main run sharing the
-          # pushed it past go test's default 10m (run 8368, 600.016s, the
+          # runner can push it past go test's default 10m with nothing
-          # running test 2s old — nothing hung).
+          # hung.
          MINSTREL_DATABASE_URL="$MINSTREL_TEST_DATABASE_URL" go run ./cmd/minstrel migrate
          go test -p 1 -race -timeout 20m ./...
@@ -314,11 +300,8 @@ jobs:
      - name: Install deps
        run: npm ci
-      # The whole tree, build and test tooling included. Until #5021 this
+      # The whole tree, build and test tooling included: the tooling that
-      # audited only what ships to browsers (`--omit=dev`), because vite,
+      # builds the shipped bundle is held to the same bar as the bundle.
      # vitest, tailwind and kit carried advisories that needed major
      # upgrades. Those upgrades landed and the full tree audits clean, so
      # the tooling that builds the shipped bundle is held to the same bar.
      - name: npm audit (all dependencies)
        run: npm audit --audit-level=moderate
@@ -329,8 +312,8 @@ jobs:
        run: npm test
  android:
-    # Using flutter-ci runner label because it's the only proven-working
+    # The flutter-ci runner label is the only proven-working label with
-    # label with docker that can pull our container.image.
+    # docker that can pull our container.image.
    runs-on: flutter-ci
    container:
      image: git.fabledsword.com/bvandeusen/ci-android:36
@@ -376,11 +359,10 @@ jobs:
      - name: Unit tests
        run: ./gradlew testDebugUnitTest
-      # No debug APK is built or uploaded here. Main used to upload a
+      # No debug APK is built or uploaded here: a debug build is signed by a
-      # debug-signed app-debug.apk: a build signed by a key regenerated in
+      # key regenerated in every container, which no install can update.
-      # every container, which no install can update (family idea #5103,
+      # Phones get builds from android-release, signed with the one release
-      # practice 2). Phones get builds from android-release, signed with
+      # key, on dev and on tags.
      # the one release key, on dev and on tags.
  # Known vulnerabilities in the Go code and the standard library it is built
  # with. Runs in the SAME image the Dockerfile's builder stage uses, so the
@@ -388,7 +370,7 @@ jobs:
  # the ci-go image carries its own Go and would be checking a different
  # toolchain. Keep this image and the Dockerfile's builder in step.
  #
-  # govulncheck is fetched at CI time, unpinned (rule 154): the vulnerability
+  # govulncheck is fetched at CI time, unpinned: the vulnerability
  # database and the tool that reads it should both be current.
  govulncheck:
    runs-on: go-ci
@@ -397,7 +379,7 @@ jobs:
    steps:
      # Plain git, not actions/checkout: that action runs on node, which the
-      # golang image does not carry. This step is dash (rule 81).
+      # golang image does not carry. This step is dash.
      - name: Checkout
        env:
          TOKEN: ${{ github.token }}
@@ -418,11 +400,14 @@ jobs:
  # ------------------------------------------------------------ artifacts --
  android-release:
-    name: Build signed APK (releases and dev)
+    name: Build signed APK
-    # Also builds on `dev`, which is what makes a test channel possible at
+    # Builds on every ref, so each channel's image carries the app from its
-    # all. Without it the only way to get a build onto a phone was to cut a
+    # own commit: `dev` for the test channel, `main` for stable phones, and a
-    # release, which quietly turns `main` into the staging area.
+    # tag for the copy attached to its Release.
-    if: startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/dev'
+    if: >-
      startsWith(github.ref, 'refs/tags/v')
      || github.ref == 'refs/heads/dev'
      || github.ref == 'refs/heads/main'
    runs-on: flutter-ci
    container:
      image: git.fabledsword.com/bvandeusen/ci-android:36
@@ -453,7 +438,7 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4
        with:
-          # Full history. The version name now reads only the tip commit's
+          # Full history. The version name reads only the tip commit's
          # timestamp, so a shallow clone would technically serve — but this
          # job derives a value that ships to devices, and a shallow checkout
          # changes what git-derived values resolve to WITHOUT failing. The
@@ -470,7 +455,7 @@ jobs:
          # The derivation lives in ci/version.sh, not here, so it can be
          # executed by a test on every push. Anything inline in this file is
          # unverifiable until a release is already running.
-          out="$(ci/version.sh HEAD)"
+          out="$(ci/version.sh --apk HEAD)"
          printf '%s\n' "${out}" >> "$GITHUB_OUTPUT"
          # The channel is a property of the LANE, not of the commit, which is
@@ -487,9 +472,9 @@ jobs:
      # Checked BEFORE the expensive work, not after it. "Attach APK to gitea
      # Release" below resolves the release by tag and fails if it is absent —
-      # but that is the final step, so a tag pushed without a release built an
+      # but that is the final step, so a tag pushed without a release would
-      # APK for several minutes first and only then discovered it had nowhere to
+      # build an APK for several minutes first and only then find it has
-      # put it. Same check, seconds in instead of minutes.
+      # nowhere to put it. Same check, seconds in instead of minutes.
      #
      # Releases are normally created through the API (which creates the tag and
      # the release together, so this passes). A bare `git push origin vX` is the
@@ -549,16 +534,15 @@ jobs:
      # secret) reaches no installed phone. The certificate's digest is
      # pinned below; it is public, not a secret. Gradle signs with the
      # release key or leaves the APK unsigned, and an unsigned build fails
-      # here too, as there is no app-release.apk to verify (family idea
+      # here too, as there is no app-release.apk to verify. apksigner, not
-      # #5103, practice 3). apksigner, not keytool: keytool prints nothing
+      # keytool: keytool prints nothing for a v2-only APK.
      # for a v2-only APK.
      #
      # Rotating the key on purpose means every install must be removed and
      # reinstalled; change the digest here in the same commit.
      - name: The APK carries the release key
        shell: bash
        env:
-          # CN=Minstrel, O=FabledSword. Read from run 8446 (#5116).
+          # CN=Minstrel, O=FabledSword.
          RELEASE_CERT_SHA256: 43d183307bc46b821789d90444a960b137f78f2166ff431efb2406d0fceaf612
        run: |
          set -euo pipefail
@@ -580,11 +564,10 @@ jobs:
          fi
      - name: Upload APK as workflow artifact
-        # Stock action (snippet #2271) — never @v3, which uploads something Gitea
+        # Stock action — never @v3, which uploads something Gitea will never
-        # will never serve back. This is the producing half of a pair:
+        # serve back. This is the producing half of a pair: image-release
-        # image-release downloads `minstrel-apk` below. Any upload v4+ pairs with
+        # downloads `minstrel-apk` below. Any upload v4+ pairs with any
-        # any download v4+ on this forge (every combination tested 2026-09-10,
+        # download v4+ on this forge, so the two pins need not move together.
        # Scribe spike #3843), so the two pins need not move together.
        uses: actions/upload-artifact@v7
        with:
          name: minstrel-apk
@@ -621,9 +604,9 @@ jobs:
          path: release-apk/
      - name: Attach APK to gitea Release
-        # Tag releases only. A dev build has no Release to hang assets on and
+        # Tag releases only. A branch build has no Release to hang assets on
-        # does not need one — the :dev image bundles the APK, and the server
+        # and does not need one — its image bundles the APK, and the server
-        # serves it from /api/client/apk like any other.
+        # serves it from /api/client/apk.
        shell: bash
        env:
          CI_TOKEN: ${{ secrets.CI_TOKEN }}
@@ -687,10 +670,9 @@ jobs:
  image-release:
    name: Build + push container image
-    # Every lane must have SUCCEEDED, each named here (rule 177). Then the
+    # Every lane must have SUCCEEDED, each named here, and so must the APK
-    # APK: tag and dev pushes build one and it must have succeeded; main
+    # build: every ref bundles the APK built from its own commit, so an
-    # pushes skip android-release and bundle the latest release's APK
+    # image without one would move a channel with no app for phones to take.
    # instead, so for main alone a skipped android-release is expected.
    needs: [go, integration, web, android, govulncheck, android-release]
    if: >-
      ${{
@@ -700,8 +682,7 @@ jobs:
      && needs.web.result == 'success'
      && needs.android.result == 'success'
      && needs.govulncheck.result == 'success'
-      && (needs.android-release.result == 'success'
+      && needs.android-release.result == 'success' }}
      || (needs.android-release.result == 'skipped' && github.ref == 'refs/heads/main')) }}
    runs-on: go-ci
    container:
      image: git.fabledsword.com/bvandeusen/ci-go:1.26
@@ -713,15 +694,13 @@ jobs:
      - name: Checkout
        uses: actions/checkout@v4
        with:
-          # Full history, and rule 149 names this specifically: any job that
+          # Full history: any job that DERIVES the version name needs it,
-          # DERIVES the version name needs it, because a shallow clone changes
+          # because a shallow clone changes what git-derived values resolve to
-          # what git-derived values resolve to WITHOUT failing — a too-low
+          # WITHOUT failing — a too-low value, silently, with every lane green.
          # value, silently, with every lane green.
          #
-          # This job was depth-1 while it took the version from GITHUB_REF. It
+          # This job runs ci/version.sh itself: with no :<version> image tags,
-          # now runs ci/version.sh itself, because with :<version> image tags
+          # the server's self-reported version is the only thing that says which
-          # gone the server's self-reported version is the only thing that says
+          # build an image is.
          # which build an image is.
          fetch-depth: 0
      - name: Detect buildable project
@@ -743,21 +722,16 @@ jobs:
          set -euo pipefail
          # THE VERSION, and it is derived the same way on every ref — the
-          # branch decides the CHANNEL, never the version (family rule 149).
+          # branch decides the CHANNEL, never the version.
          #
-          # This used to be three different things: the literal string "main"
+          # A per-ref string ("main", "dev", the tag name) would not order, and
-          # on main, "dev" on dev, and the tag name on a tag. None of them
+          # "dev" would be the same string forever — two dev images eight weeks
-          # ordered, and the first two were the same string forever — two dev
+          # apart indistinguishable in the UI. With no version image tags, this
-          # images eight weeks apart were indistinguishable in the UI. That
+          # is how an admin tells which build a container is running.
          # mattered little while :vYYYY.MM.DD.HHMM existed to identify a
          # build; with version image tags gone, this IS how an operator tells
          # which build a container is running.
          #
          # `sed -n s///p` rather than `grep`: it exits 0 when nothing matches,
          # so the empty check below is actually reachable. A grep here would
-          # kill the step at the assignment under the runner's pipefail — the
+          # kill the step at the assignment under the runner's pipefail.
          # exact bug that took down the first main build after the version
          # rework.
          VERSION="$(ci/version.sh HEAD | sed -n 's/^name=//p')"
          if [ -z "${VERSION}" ]; then
            echo "::error::could not derive a build version from ci/version.sh"
@@ -770,13 +744,14 @@ jobs:
            # The tag build exists to produce the signed APK and attach it to
            # the release; the image it rebuilds is the SAME SOURCE as the main
            # build minutes earlier, differing only in which APK is baked in.
-            # Rule 145 is explicit about that case: when the same source is
+            # When the same source is rebuilt with different contents,
-            # rebuilt with different contents, publish the moving channel tag
+            # publish the moving channel tag and never a commit-addressable
-            # and never a commit-addressable one.
+            # one.
            #
-            # :latest must move here rather than waiting for the next main
+            # :latest moves here so the server hands out the same APK build
-            # push, or the channel would carry the PREVIOUS release's APK
+            # that is attached to the Release: a phone that installed from the
-            # indefinitely — a channel that cannot refresh itself (rule 146).
+            # Release page and one that updated in-app hold one build, with one
            # ordering key. Cut a release on main's tip, as :latest follows it.
            CHANNEL=stable
            echo "args=-t ${IMAGE}:latest" >> "$GITHUB_OUTPUT"
            echo "::notice::Release build ${VERSION}: refreshing :latest around the new APK"
@@ -790,10 +765,9 @@ jobs:
            echo "args=-t ${IMAGE}:dev" >> "$GITHUB_OUTPUT"
            echo "::notice::Dev-branch build ${VERSION}: :dev"
          else
-            # The production line: :latest tracks main's tip (rule 147) and
+            # The production line: :latest tracks main's tip and :<sha> is
-            # :<sha> is the rollback unit (rule 145). Full 40-char SHA, matching
+            # the rollback unit. Full 40-char SHA, so a rollback target is
-            # the family's other repos, so a rollback target is addressable
+            # addressable straight from the commit anyone is reading.
            # straight from the commit anyone is reading.
            CHANNEL=stable
            echo "args=-t ${IMAGE}:latest -t ${IMAGE}:${GITHUB_SHA}" >> "$GITHUB_OUTPUT"
            echo "::notice::Main-branch build ${VERSION}: :latest + :${GITHUB_SHA}"
@@ -810,25 +784,19 @@ jobs:
            | docker login git.fabledsword.com -u "${{ github.actor }}" --password-stdin
      - name: Download signed APK artifact
-        # Tag and dev pushes — android-release just produced this. Only `main`
+        # android-release just produced this, on every ref.
-        # takes the "Bundle latest release APK" path below, because it is the
+        if: steps.guard.outputs.ready == 'true'
        # one ref that moves a channel without building an APK of its own.
        if: >-
          steps.guard.outputs.ready == 'true' &&
          (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/dev')
        # Consuming half of the pair: stock download-artifact, which works here for
        # the same reason as the upload (gitea/runner 3.x edits the GHES refusal
-        # out of the bundle; snippet #2271). v8 runs on node24, which every
+        # out of the bundle). v8 runs on node24, which every CI-runner image
-        # CI-runner image carries — the runner uses the image's own node.
+        # carries — the runner uses the image's own node.
        uses: actions/download-artifact@v8
        with:
          name: minstrel-apk
          path: client/
      - name: Stage bundled APK + version sidecar
-        if: >-
+        if: steps.guard.outputs.ready == 'true'
          steps.guard.outputs.ready == 'true' &&
          (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/dev')
        shell: bash
        env:
          # All three pulled from android-release's outputs so the sidecar the
@@ -849,65 +817,6 @@ jobs:
          cat client/minstrel.apk.version
          ls -lh client/
      - name: Bundle latest release APK (non-tag :latest builds)
        # Main pushes don't build an APK, but they DO move :latest — so
        # without this the in-app update channel would vanish from :latest
        # until the next tag. Pull the most-recent release's signed APK and
        # the sidecar published beside it, so what the server reports is what
        # that build actually recorded rather than something re-derived here.
        # Degrades to an empty client/ (404 update channel) — never a wrong
        # version — if no release or APK asset can be resolved. That
        # degradation only actually works because the greps below carry
        # `|| true`; under the runner's default pipefail a non-matching grep
        # kills the step instead of falling through to the empty-case branch.
        if: steps.guard.outputs.ready == 'true' && github.ref == 'refs/heads/main'
        shell: bash
        env:
          CI_TOKEN: ${{ secrets.CI_TOKEN }}
        run: |
          set -eu
          REPO="${GITHUB_REPOSITORY}"
          REL_JSON="$(curl -fsSL -H "Authorization: token ${CI_TOKEN}" \
            "https://git.fabledsword.com/api/v1/repos/${REPO}/releases/latest" || true)"
          if [ -z "${REL_JSON}" ]; then
            echo "::notice::no published release — image ships without bundled APK"; exit 0
          fi
          # `|| true` on every one of these, and it is load-bearing rather
          # than defensive habit. The runner already invokes this shell as
          # `bash -e -o pipefail`, so a pipeline whose grep matches NOTHING
          # exits non-zero even though `head` succeeded — and the step dies at
          # the assignment, before ever reaching the `if` written to handle the
          # empty case. Every "degrades gracefully" branch below is unreachable
          # without this.
          TAG="$(printf '%s' "${REL_JSON}" | grep -oP '"tag_name":\s*"\K[^"]+' | head -1)" || true
          APK_URL="$(printf '%s' "${REL_JSON}" | grep -oP '"browser_download_url":\s*"\K[^"]+' | grep -E '\.apk$' | head -1)" || true
          if [ -z "${TAG}" ] || [ -z "${APK_URL}" ]; then
            echo "::notice::latest release '${TAG:-?}' has no APK asset — image ships without bundled APK"; exit 0
          fi
          curl -fsSL -H "Authorization: token ${CI_TOKEN}" -o client/minstrel.apk "${APK_URL}"
          # Take the version the release RECORDED rather than recomputing it.
          # This used to re-derive the name from the tagged commit, which meant
          # the formula lived in two files that had to be kept in step, and it
          # could only ever recover the name — the ordering key is build-time
          # minutes and does not exist anywhere after that build ends.
          SIDECAR_URL="$(printf '%s' "${REL_JSON}" | grep -oP '"browser_download_url":\s*"\K[^"]+' | grep -E '\.apk\.version$' | head -1)" || true
          if [ -n "${SIDECAR_URL}" ]; then
            curl -fsSL -H "Authorization: token ${CI_TOKEN}" -o client/minstrel.apk.version "${SIDECAR_URL}"
            cat client/minstrel.apk.version
          else
            # Releases published before sidecars were attached. Their name is
            # still recoverable from the tag, but their ordering key genuinely
            # is not — so it is reported ABSENT rather than guessed. A wrong
            # key is an install the platform refuses; an absent one just tells
            # the client to fall back to comparing names, which is exactly
            # what those builds already do.
            echo "::notice::release ${TAG} predates the version sidecar — bundling with name only, no ordering key"
            printf '{"name":"%s","code":null,"channel":"stable"}\n' "${TAG#v}" > client/minstrel.apk.version
          fi
          echo "::notice::bundled release APK from ${TAG}"
          ls -lh client/
      - name: Build and push
        if: steps.guard.outputs.ready == 'true'
        # --pull: the Dockerfile's base images are floating tags (golang:1.26,
@@ -924,18 +833,15 @@ jobs:
  # Verifies a tag release actually ended up complete, and names the specific
  # thing that's missing if not.
  #
-  # Added 2026-08-07 after v2026.08.07 was re-cut. The android-release job never
+  # A release can be incomplete while looking fine. If android-release never
-  # started — no log was written at all — so all eight of its steps reported
+  # starts (a runner failing to launch), its steps all report `failure` with
-  # `failure` with none executed and image-release showed `skipped`. The run was
+  # none executed and image-release shows `skipped`. The run is red, but the
-  # red, but the *release page rendered fine*, and `main`'s own push build had
+  # release page renders and main's own push build has already moved
-  # already moved `:latest`, so the code was deployable and nothing looked
+  # `:latest`, so a release missing its APK and its image is easy to skim
-  # obviously wrong. The release was simply missing its APK and its image,
+  # past.
  # which is easy to skim past.
  #
-  # This job cannot prevent that (the cause was a runner failing to launch, not
+  # This job cannot prevent that; it turns an incomplete release into an
-  # anything in this file). What it does is turn an incomplete release into an
+  # explicit, named error instead of a row of mystery step failures.
  # explicit, named error instead of eight mystery step failures — so the
  # consequence is legible without having to infer it.
  #
  # `if: always()` is the whole point: it has to report precisely when the jobs
  # above did NOT succeed.
@@ -977,22 +883,16 @@ jobs:
          echo "::notice::APK attached: ${APK}"
      # The other half. Checking only the APK would report success on a release
-      # whose image push failed — which is precisely the second thing that was
+      # whose image push failed. `always()` on this job means it runs even when
-      # missing when v2026.08.07 had to be re-cut. `always()` on this job means
+      # image-release failed, so without this the guard would cheerfully verify
-      # it runs even when image-release failed, so without this the guard would
+      # an incomplete release.
      # cheerfully verify an incomplete release.
      #
-      # This asserted `:${TAG}` — the :vYYYY.MM.DD.HHMM image — until
+      # The image checked is the :<sha> rollback target, which main's own build
-      # 2026-09-10. Version image tags are no longer published (rule 145), so
+      # published for this same commit before the tag was cut (there are no
-      # that assertion would now fail every release for a tag nothing mints.
+      # version image tags). It catches an image push that silently did not
-      # The rollback target it was really protecting is the :<sha> image, which
+      # happen, and it proves the ORDERING — a tag cut on a commit whose main
-      # main's own build published for this same commit before the tag was cut.
+      # build never completed has no rollback target, and that is worth failing
-      #
+      # on rather than discovering during an incident.
      # Checking it here earns its keep twice over: it still catches an image
      # push that silently did not happen, and it additionally proves the
      # ORDERING — a tag cut on a commit whose main build never completed has
      # no rollback target, and that is worth failing on rather than
      # discovering during an incident.
      - name: Rollback image must exist for the tagged commit
        shell: bash
        run: |
@@ -12,13 +12,11 @@
 # Test binary, built with `go test -c`
 *.test
-# `make build` output. bin/minstrel was tracked until 2026-09-10 — an 18 MB
+# `make build` output — an 18 MB binary that is never committed.
 # binary committed by accident, last refreshed by a commit about web test
 # mocks, and re-dirtied by every local build since.
 bin/
-# Bundled Android APK + version sidecar (#397). Populated by CI for
+# Bundled Android APK + version sidecar. Populated by CI on every image
-# tag releases; never committed. README in client/ explains the flow.
+# build; never committed. README in client/ explains the flow.
 client/minstrel.apk
 client/minstrel.apk.version
@@ -44,10 +42,9 @@ go.work.sum
 docs/superpowers/
 # Per-machine Claude Code settings + remember-skill memory artifacts +
-# project-level Claude/AI instruction files. All operator-scoped; the
+# project-level Claude/AI instruction files. All per-machine;
-# canonical project memory lives under ~/.claude/projects/ outside the
+# CLAUDE.md/AGENTS.md/GEMINI.md are tool-specific working notes, not
-# repo. CLAUDE.md/AGENTS.md/GEMINI.md stay on the operator's machine
+# project artifacts.
 # only — they're tool-specific working notes, not project artifacts.
 .claude/
 .remember/
 CLAUDE.md
@@ -19,11 +19,10 @@ ENV CGO_ENABLED=0
 # (YYYY.MM.DD.HHMM) and the lane's channel; a local `docker build` falls back
 # to "dev"/"local". Both are surfaced at /healthz.
 #
-# These are two values on purpose (family rule 149): the same commit built on
+# These are two values on purpose: the same commit built on dev and on main
-# dev and on main reports the same NAME and differs only in CHANNEL. Folding
+# reports the same NAME and differs only in CHANNEL. Folding the channel
-# the channel into the version string is what the rule forbids — the version
+# into the version string would make two dev images eight weeks apart
-# used to BE the channel word here ("main"/"dev"), which meant two dev images
+# indistinguishable.
 # eight weeks apart were indistinguishable.
 ARG MINSTREL_VERSION=dev
 ARG MINSTREL_CHANNEL=local
 RUN go build -trimpath \
@@ -36,8 +35,8 @@ FROM debian:bookworm-slim
 # ffmpeg: duration probes and the exact-tier audio hash (a SHA-256 of the
 # encoded audio packets, so no decode). libchromaprint-tools: fpcalc, the
 # acoustic fingerprint that tells the same recording at two bitrates apart
-# from two different recordings (M400). Both are baked in at build time so a
+# from two different recordings. Both are baked in at build time so a
-# deployed instance never fetches either (rule 164); fpcalc is shelled out
+# deployed instance never fetches either; fpcalc is shelled out
 # rather than bound because CGO_ENABLED=0 above rules out cgo.
 RUN apt-get update \
    && apt-get install -y --no-install-recommends ca-certificates ffmpeg libchromaprint-tools \
@@ -57,10 +56,12 @@ COPY config.example.yaml /etc/smartmusic/config.yaml
 RUN mkdir -p /app/data /app/client && chown -R minstrel:minstrel /app
 WORKDIR /app
-# In-app update channel (#397). client/ in the build context holds
+# In-app update channel. client/ in the build context holds
-# minstrel.apk + minstrel.apk.version (populated by release.yml on tag
+# minstrel.apk + minstrel.apk.version, which release.yml fills on every
-# pushes; .gitkeep + README otherwise). Endpoints return 404 when the
+# build (dev and tag pushes bundle their own APK, main bundles the latest
-# APK files aren't present, so non-tag images degrade gracefully.
+# release's); a local build has only .gitkeep + README. Endpoints return
 # 404 when the APK files aren't present, so such an image degrades
 # gracefully.
 COPY --chown=minstrel:minstrel client/ /app/client/
 USER minstrel
@@ -13,11 +13,8 @@ generate:
 generate-go:
 	go run github.com/sqlc-dev/sqlc/cmd/sqlc@v$(SQLC_VERSION) generate
-# Fail if the committed generated code no longer matches the .sql sources.
+# Fail if the committed generated code no longer matches the .sql sources:
-#
+# a hand-edit, a half-applied regen, or a schema change without a regen.
 # Nothing verified this before, so internal/db/dbq could silently drift from
 # internal/db/queries — a hand-edit, a half-applied regen, or a schema change
 # without a regen would all pass CI while the typed layer lied about the SQL.
 #
 # The diff is printed BEFORE the exit-code check on purpose: when this fails,
 # the log then contains sqlc's exact expected output, which is what you commit.
@@ -36,8 +33,8 @@ test-short:
 	go test -short -race ./...
 # Full suite incl. integration tests, against the dedicated minstrel_test
-# DB so a run never truncates the dev `minstrel` DB (Fable #339). Ensures
+# DB so a run never truncates the dev `minstrel` DB. Ensures the test DB
-# the test DB exists (idempotent — createdb errors if present, ignored).
+# exists (createdb fails harmlessly if it is already there).
 test-integration:
 	docker compose up -d postgres
 	-docker compose exec -T postgres createdb -U minstrel minstrel_test
@@ -1,62 +1,26 @@
-# Minstrel
+<p align="center"><img src="web/static/brand/mark.svg" width="120" alt="Minstrel logo"></p>
-A self-hosted music server that thinks for you. Smart shuffle, contextual likes, ListenBrainz-aware radio, and a wanted list it fetches for you — server-side, so every client (web, mobile, Subsonic third-party) gets the same intelligence.
+<h1 align="center">Minstrel</h1>
-> State and intelligence belong on the server, not the client.
+<p align="center">A self-hosted music server that picks what to play next.</p>
 Minstrel serves your music library to the web, to its own Android app, and to any Subsonic client. Shuffle, radio, likes and play history are worked out on the server, so every device gets the same mixes and the same history. It can also find, download and file the albums you want, through a search service and a download client you run yourself. It is for anyone who keeps their own music collection and wants it to sound like more than a random shuffle.
 <a href="docs/screenshots/home.png"><img src="docs/screenshots/home.png" width="820" alt="Minstrel home — your library at a glance"></a>
-## Highlights
+## Quick start
 - **OpenSubsonic-compatible.** Existing Subsonic clients (DSub, Symfonium, play:Sub, etc.) connect with no special configuration.
 - **Server-side smart shuffle.** Track-similarity vectors, dual-like model (general + contextual), and session memory keep mixes coherent across devices.
 - **ListenBrainz radio.** Session-aware "more like this" pulls from ListenBrainz similarity data, not a static genre tag.
 - **Finds, downloads and files music itself.** A wanted list — requests, followed artists, albums gone missing — searched through indexers *you* configure and downloaded by a client *you* run. Each download is checked against MusicBrainz, tagged, and filed into your library, and a better copy replaces a poor one. Optional, and off until you add a search service and a download client.
 - **Built-in web SPA.** Full-feature library, search, queue, playlists, and admin — no separate frontend container to deploy.
 - **Native Android client, shipped with the server.** The signed APK is bundled into every image and attached to each [release](https://git.fabledsword.com/bvandeusen/minstrel/releases) — sideload it once, then the app self-updates straight from your own server (no app store, no separate download to track).
 ## Scope and responsible use
 **Minstrel is a library server.** It indexes files on disk you point it at, and streams them to your own clients.
 Minstrel ships **no** indexers, **no** trackers, **no** torrent / Usenet / NZB engine of its own, and **no** DRM circumvention of any kind.
 **Acquisition is optional and inert until you configure it.** You add the search service (a Prowlarr instance or a Torznab indexer) and the download client (qBittorrent) you already run; Minstrel then searches those for the albums on its wanted list, hands the release it picks to your client, and checks and files what arrives. It configures no sources on your behalf: any it uses are ones you added yourself.
 **What you put in your library, and what sources you configure, are your responsibility.** Copyright law applies to your collection the same way it applies to any other software that plays a file. Please respect it, and respect the terms of any service you connect.
 Minstrel is not affiliated with or endorsed by ListenBrainz, MusicBrainz, Prowlarr, qBittorrent, or Subsonic.
 ## Quickstart
 ```yaml
 # compose.yaml
 services:
  minstrel:
    image: git.fabledsword.com/bvandeusen/minstrel:latest
    # Reachable from your LAN at http://<host>:4533. If this host faces the
    # internet, bind it to 127.0.0.1 and put an HTTPS proxy in front instead:
    # see docs/hosting.md.
    ports: ['4533:4533']
    volumes:
-      # Your music library. Point ./music at wherever your audio files
+      - ./music:/music              # your library; must be writable by uid 1000
-      # live. Writable, because Minstrel files the albums it downloads into
+      - minstrel-data:/app/data     # art and caches
      # it (as Artist/Album (Year)/..., tagged with MusicBrainz ids) and
      # deletes a file when an admin asks it to (for example, quarantine's
      # "Delete file"). Files already there are never moved, renamed or
      # retagged. The container runs as uid 1000, so that user needs write
      # access to the folders. Mount it :ro to forbid writes: those actions
      # then refuse, say why, and change nothing.
      - ./music:/music
      # Generated data: playlist cover collages, artist art, caches.
      # The path must match MINSTREL_STORAGE_DATA_DIR, which the image
      # sets to /app/data — keep this mount on /app/data or your cache
      # won't survive a container recreate.
      - minstrel-data:/app/data
    environment:
      MINSTREL_DATABASE_URL: postgres://minstrel:minstrel@db:5432/minstrel?sslmode=disable
      # Colon-separated library roots to scan; must match the container
      # path of the music mount above (/music here).
      MINSTREL_LIBRARY_SCAN_PATHS: /music
    depends_on: [db]
@@ -66,9 +30,7 @@ services:
      POSTGRES_USER: minstrel
      POSTGRES_PASSWORD: minstrel
      POSTGRES_DB: minstrel
-    # Postgres data dir — users, likes, play history, sessions, settings.
+    volumes: [pgdata:/var/lib/postgresql/data]   # users, likes, history: back this up
    # The one volume you must never lose; back it up with pg_dump.
    volumes: [pgdata:/var/lib/postgresql/data]
 volumes:
  minstrel-data:
@@ -77,105 +39,101 @@ volumes:
 ```bash
 docker compose up -d
 docker compose logs minstrel | grep setup_token
 ```
-## First run
+Open `http://<host>:4533/register` and create the first account with that setup token. The first account is the administrator.
-With the stack up, a handful of in-app steps get you to a working library. Use your own host in place of `localhost` if you're reaching the server over a LAN/VPN address. Plain `http://` is fine on a network you trust; a server reachable from the internet belongs behind HTTPS, which [docs/hosting.md](docs/hosting.md) walks through.
+### First run
-**1. Create your admin account.** Visit `http://localhost:4533/register`. The first account on a fresh instance becomes the administrator, and creating it asks for the **setup token** the server prints in its log (`docker compose logs minstrel | grep setup_token`), so nobody else can claim a newly exposed server first. Later users join through the same form or an invite token (step 5).
+1. **Let the first scan finish.** Minstrel scans the library on startup. Watch it, or scan again, on the **Admin** page (`/admin`). Later scans only pick up what changed.
-
+2. **Install the Android app.** In **Settings** (`/settings`), the *Install the Android app* card downloads the app this server ships. It updates itself from your server after that.
-<a href="docs/screenshots/register.png"><img src="docs/screenshots/register.png" width="320" alt="Creating the first (admin) account on a fresh instance"></a>
+3. **Invite the household.** In **Admin › Users** (`/admin/users`), make an invite token or turn on open registration. Each person gets their own likes, history and recommendations.
-
+4. **Optional: connect services.** Add a search service and a download client in **Admin › Acquisition** (`/admin/acquisition`). Each person adds their own ListenBrainz token in **Settings › Connections**.
 **2. Let the first library scan finish.** `scan_on_startup` is on by default, so Minstrel walks your mounted library on boot and imports artists, albums, and tracks — no button to press. Watch progress (and re-scan any time) on the **Admin** page (`/admin`); the scan runs in stages and is incremental, so later restarts only pick up what changed.
 <a href="docs/screenshots/library-scan.png"><img src="docs/screenshots/library-scan.png" width="820" alt="The Admin page, where the library scan runs and reports progress"></a>
 **3. (Optional) Set up acquisition and connections.** In admin **Acquisition** (`/admin/acquisition`), add a search service and a download client so Minstrel can fetch what's wanted; each person adds their own ListenBrainz token (scrobbling + similarity radio) under **Settings → Connections** (`/settings/connections`). These live in the UI and apply without a restart; the display name can also be set via `MINSTREL_BRANDING_APP_NAME`.
 <a href="docs/screenshots/integrations.png"><img src="docs/screenshots/integrations.png" width="820" alt="Search services, download clients and searching in admin Acquisition"></a>
 **4. Install the Android app.** Open **Settings** (`/settings`) and use the *Install the Android app* card to download the APK that ships inside this server image, then sign in with the same account. From then on the app self-updates straight from your server.
 <a href="docs/screenshots/android-download.png"><img src="docs/screenshots/android-download.png" width="820" alt="The &quot;Install the Android app&quot; download card in Settings"></a>
 **5. Invite the rest of the household.** From admin **Users** (`/admin/users`), generate an invite token (or enable open registration). Each person gets their own account, so likes, play history, and recommendations stay per-user.
 <a href="docs/screenshots/invite-users.png"><img src="docs/screenshots/invite-users.png" width="820" alt="Generating an invite token in admin Users"></a>
 For the full configuration surface, see [`config.example.yaml`](./config.example.yaml).
 Hosting Minstrel on the internet: see [docs/hosting.md](docs/hosting.md). What Minstrel does to protect accounts, and why: [docs/security.md](docs/security.md).
 ## Configuration
-Most operators only need the env vars in the quickstart above. A few extras worth knowing:
+The quick start sets everything that's required. These are the settings people most often change:
- `MINSTREL_BRANDING_APP_NAME` — rename the instance ("Family Jukebox", "Office Music"). Surfaces in the header, browser tab, and OG share previews.
+| Variable | What it does |
- `MINSTREL_STORAGE_DATA_DIR` — where generated artefacts (playlist cover collages, artist art, caches) are written. The container image sets this to `/app/data`, which is why the quickstart mounts the `minstrel-data` volume there.
+|---|---|
- `MINSTREL_LIBRARY_SCAN_PATHS` — colon-separated list of music library roots to scan. Supports multiple roots (`/music:/podcasts`).
+| `MINSTREL_DATABASE_URL` | Postgres connection string. Required. |
 | `MINSTREL_LIBRARY_SCAN_PATHS` | Library folders inside the container, colon-separated (`/music:/audiobooks`). They are used on first start only; after that, change them in **Admin › Library**. |
 | `MINSTREL_BRANDING_APP_NAME` | The name shown in the header, the browser tab and link previews. |
 | `MINSTREL_LOG_LEVEL` | `debug`, `info`, `warn` or `error`. |
-ListenBrainz (per-user scrobble + similarity tokens) and acquisition (search services and download clients) are configured in the UI rather than env vars or yaml — per Minstrel's "config in UI" rule, integration settings live where operators can edit them without restarting.
+Search services, download clients, ListenBrainz, email and recommendation tuning are set in the web UI and take effect without a restart. The full file-based surface is in [`config.example.yaml`](./config.example.yaml); to use it, mount your copy at `/etc/smartmusic/config.yaml`.
-Most operational keys have a `MINSTREL_<SECTION>_<FIELD>` env override. Recommendation and events tuning are yaml-only. See [`config.example.yaml`](./config.example.yaml) for the authoritative surface.
+## Setup pitfalls
-## Updating
+- **The library mount has to be writable by uid 1000.** Minstrel files the albums it downloads into the library, and it deletes a file when an admin asks it to. It never moves, renames or retags files that were already there. Mount the library `:ro` to forbid writes: those actions then refuse and say why.
 - **`MINSTREL_LIBRARY_SCAN_PATHS` names the path inside the container** (`/music`), not the folder on your host.
 - **On the internet, put it behind HTTPS.** Plain `http://` is fine on a network you trust. For a public server, bind the port to `127.0.0.1` and put a reverse proxy in front: see [docs/hosting.md](docs/hosting.md).
-Image tags (`git.fabledsword.com/bvandeusen/minstrel:<tag>`):
+## Updating and backups
- `:latest` — production. Tracks `main`'s tip and moves on every `main` push and every release. What most operators should run.
+```bash
- `:<commit-sha>` — the rollback unit. Every `main` push publishes one, so any production commit is addressable without a release ceremony. Immutable: a given SHA tag is never re-pushed. Pin one if you need a deployment that cannot change under you, and use it to roll back.
+docker compose pull && docker compose up -d
- `:dev` — the rolling test channel, rebuilt on every push to `dev` and carrying its own freshly-built Android APK. Run this to try something before it ships. It moves constantly, has no per-commit tag, and its only recovery path is forward — if a `:dev` image is broken, the fix is the next push, not a rollback.
+```
-That is the whole tag map. **There are no version-numbered image tags**, and no `:main`. Git and the build's own self-reported version answer "which build is this" — the Settings page shows it, and so does `/healthz`. Release *tags* in git are still `vYYYY.MM.DD.HHMM`; they name a changelog entry and the APK attached to it, not an image.
+Database migrations run at startup. Image tags:
-Rolling back to `:<commit-sha>` pins the **server code** at that commit — not the server-and-app pair. The Android APK is baked in at image build time, so a SHA image carries whichever app was current when that commit was built, which may be older than what `:latest` bundles now. If both halves matter, check what the image bundles rather than trusting the tag's name.
+- `:latest`: the stable release. Most people should run this.
 - `:<commit-sha>`: one fixed build. Pin one to stop updates, or to roll back.
 - `:dev`: the test channel, rebuilt on every change. It may break, and the fix is the next build.
-Every `:latest`, `:<commit-sha>` and `:dev` bundles a signed Android APK, so the in-app update channel is always live. All are signed with the same key, so a phone can move between the stable and dev channels without uninstalling — point it at a `:dev` server and the in-app updater offers that channel's build.
+Every image carries a signed Android app, all with the same key, so a phone can move between channels without reinstalling. Rolling back a SHA tag rolls back the app it carries too.
-The app reports which channel it is on alongside its version, and decides whether an update is available using the build's ordering key rather than its displayed name — the same value Android installs by, so an offer it makes is one the platform will accept.
+**Back up the Postgres volume** with `pg_dump`. It holds accounts, likes, play history, playlists and settings, and a migration can only be undone by restoring a dump. The `minstrel-data` volume holds artwork and caches that Minstrel rebuilds if lost.
-Database migrations run automatically at startup; rollbacks require restoring a Postgres dump.
+## Features
-Releases up to 2026-09-10 also published a `:vYYYY.MM.DD[.HHMM]` image tag. Those images still exist and still work — they are simply not extended.
+**Listening**
 - Smart shuffle that weighs what you like, what you skip and what you've heard lately, instead of picking at random.
 - Two kinds of like: a song you love, and a song that's right for what you're listening to now.
 - Radio that starts from any song, using ListenBrainz similarity as well as your own history.
 - Daily mixes and system playlists built from your listening.
 - Playback on Sonos and other UPnP speakers from the Android app.
 - Loudness levelling between tracks, so you never reach for the volume.
-## Specs
+**Your library**
 - Browse by artist, album, genre and year, with search across everything.
 - Duplicates, missing files and suspect copies are found and listed under **Collection** for an admin to fix.
 - Missing album art and MusicBrainz ids are filled in automatically.
-Authoritative scope lives under [`docs/`](./docs):
+**Getting music**
 - A wanted list: requests from the household, artists you follow, and albums whose files went missing.
 - Minstrel searches the indexers you configure, hands the best release to your download client, checks what arrives against MusicBrainz, tags it, and files it. A better copy replaces a poor one.
 - Off until you add a search service and a download client.
- [Server spec](./docs/smart-music-server-spec.md) — current implementation focus.
+**Clients and accounts**
- [Client spec](./docs/smart-music-client-spec.md) — Flutter companion app.
+- A full web app, built into the server.
 - A native Android app that ships inside the server image, keeps playing what it has cached when the server is out of reach, and updates itself from your server.
 - OpenSubsonic-compatible, so existing clients such as DSub, Symfonium and play:Sub connect as they are.
 - Separate accounts for each person, with invites, and an inbox for what happened while you were away.
 ## Scope and responsible use
 Minstrel indexes the files you point it at and streams them to your own clients. It ships no indexers, no trackers, no torrent, Usenet or NZB engine of its own, and no DRM circumvention.
 Getting music is optional and does nothing until you configure it. It searches only the search service (Prowlarr or a Torznab indexer) and the download client (qBittorrent) you add yourself.
 What you put in your library, and the sources you configure, are your responsibility. Copyright law applies to your collection as it does to any other software that plays a file; please respect it, and the terms of any service you connect.
 Minstrel is not affiliated with or endorsed by ListenBrainz, MusicBrainz, Prowlarr, qBittorrent or Subsonic.
 ## Development
-Two concurrent dev processes:
+- **Backend:** `docker compose up` in this repo runs Postgres and Minstrel on `:4533`.
 - **Web:** `cd web && npm install && npm run dev` starts Vite on `:5173`. It proxies `/api/*` and `/rest/*` to `:4533`.
 - **Tests:** `make test-short` runs the unit tests. `make test-integration` also runs the database tests, against a separate `minstrel_test` database so your dev data is never truncated.
 - **Image:** `docker build -t minstrel .` builds the web app and embeds it in the server binary.
 - **Branches:** work lands on `dev`; `main` changes through pull requests from `dev`.
-1. **Backend:** `docker compose up` — Postgres + Minstrel on `:4533`.
+How accounts and sessions are protected: [docs/security.md](docs/security.md).
 2. **Frontend:** `cd web && npm install && npm run dev` — Vite dev server on `:5173` with HMR. The Vite server proxies `/api/*` and `/rest/*` to `:4533` so session cookies work.
 ### Testing
 - Unit + race (no DB): `make test-short`.
 - Full suite incl. integration tests: `make test-integration`. This runs
  against a dedicated `minstrel_test` database so a test run never
  truncates your dev `minstrel` data (admin user, library, likes). It
  brings up the compose Postgres and creates the test DB if missing.
 - CI runs both: a fast `go test -short -race` gate plus an integration
  job with its own ephemeral Postgres (the `integration` lane in
  `.gitea/workflows/release.yml`, which also gates every image publish).
 ### Production build
 `docker build -t minstrel .` runs the SvelteKit build inside a `node` stage, copies the output into the `golang` stage, and `//go:embed`s it into the final binary. The container serves the SPA from `/` alongside the API surfaces; no separate static-file server is required.
 ### Branches
 - Day-to-day work happens on `dev` (or feature branches merged into `dev`).
 - `main` is **protected** — changes land via PR from `dev`.
 - Releases are cut by tagging `v*` off `main`; the release workflow builds the signed APK, attaches it to the release, and refreshes `:latest` around it.
 Task and milestone tracking: Fable (`Minstrel` project, id 12).
 ## License
-See [LICENSE](./LICENSE).
+MIT. See [LICENSE](./LICENSE).
@@ -1,9 +1,9 @@
 plugins {
    alias(libs.plugins.android.application)
    // kotlin-android NOT applied: AGP 9 enables built-in Kotlin by default,
-    // and KSP 2.3.x supports it (PR #2674, merged Oct 2025). serialization
+    // and KSP 2.3.x supports it. serialization + compose-compiler are
-    // + compose-compiler are language-level Kotlin compiler plugins and
+    // language-level Kotlin compiler plugins and still need explicit
-    // still need explicit application.
+    // application.
    alias(libs.plugins.kotlin.serialization)
    alias(libs.plugins.compose.compiler)
    alias(libs.plugins.ksp)
@@ -31,14 +31,9 @@ android {
        //
        // versionCode is minutes since 2020-01-01 at BUILD time. It is the
        // value the platform decides installs by, so it must be monotonic by
-        // construction.
+        // construction. Not a commit count: that runs ahead on `dev`, so a dev
-        //
+        // build would outrank the `main` release meant to replace it and
-        // This comment used to say versionCode was a commit count and that it
+        // Android would refuse the install as a downgrade.
        // was "monotonic forever". It was neither — a commit count runs ahead
        // on `dev`, so a dev build outranked the `main` release meant to
        // replace it and Android refused the install as a downgrade. Worth
        // knowing the claim was here, stated as a reassurance, while the bug
        // it denied was live.
        val versionNameOverride =
            (project.findProperty("MINSTREL_VERSION_NAME") as String?)?.takeIf { it.isNotBlank() }
        val versionCodeOverride =
@@ -73,9 +68,9 @@ android {
                "proguard-rules.pro",
            )
            // Signed with the release key or not at all. Falling back to the
-            // debug key made a missing secret into a published APK that no
+            // debug key would turn a missing secret into a published APK that no
-            // install could ever update (family idea #5103, practice 2). An
+            // install could ever update. An unsigned build installs nowhere, so
-            // unsigned build installs nowhere, so the gap shows at once.
+            // the gap shows at once.
            signingConfig =
                if (System.getenv("ANDROID_KEYSTORE_PATH").isNullOrEmpty()) {
                    null
@@ -8,7 +8,7 @@
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
-    <!-- Notifications when the app is closed (M489 #5347): the delivery
+    <!-- Notifications when the app is closed: the delivery
         service, and starting it again after a reboot or an update. -->
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
@@ -84,11 +84,8 @@
            </intent-filter>
        </receiver>
-        <!-- The FileProvider that used to live here existed solely to expose the
+        <!-- No FileProvider: the self-update streams the downloaded APK into a
-             downloaded update APK as a content:// URI for the old ACTION_VIEW
+             PackageInstaller session, so nothing needs a content:// URI. -->
             install intent. A PackageInstaller session takes a stream instead,
             so both the provider and res/xml/file_paths.xml are gone — nothing
             else in the app ever used that authority. -->
        <!-- On-demand WorkManager initialization: MinstrelApplication
             implements Configuration.Provider and supplies the
@@ -24,6 +24,7 @@ import androidx.core.content.ContextCompat
 import androidx.hilt.navigation.compose.hiltViewModel
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.rememberNavController
 import com.fabledsword.minstrel.auth.AuthStore
 import com.fabledsword.minstrel.auth.ui.AuthGateViewModel
@@ -33,6 +34,7 @@ import com.fabledsword.minstrel.connectivity.ServerHealth
 import com.fabledsword.minstrel.connectivity.NetworkStatusController
 import com.fabledsword.minstrel.nav.DetailSeedCache
 import com.fabledsword.minstrel.nav.LocalDetailSeedCache
 import com.fabledsword.minstrel.nav.Login
 import com.fabledsword.minstrel.nav.MinstrelNavGraph
 import com.fabledsword.minstrel.nav.Notifications
 import com.fabledsword.minstrel.nav.NowPlaying
@@ -106,7 +108,7 @@ class MainActivity : ComponentActivity() {
    }
    /**
-     * Android 13+ asks before an app may post notifications (M489 #5347).
+     * Android 13+ asks before an app may post notifications.
     * Asked once delivery is wanted (signed in, background delivery on),
     * each launch until answered: after a second "no" the system stops
     * showing the prompt by itself, and Settings → Notifications links to
@@ -177,6 +179,7 @@ private fun App(
                    navController.navigate(route) { launchSingleTop = true }
                    onOpenedRoute()
                }
                SignInWhenSessionRejected(gate, navController)
                MinstrelNavGraph(
                    navController = navController,
                    startDestination = resolved,
@@ -187,6 +190,24 @@ private fun App(
    }
 }
 /**
 * When the server ends the session while the app is in use, opens the
 * sign-in screen rather than leaving the user on screens whose every
 * request fails.
 */
@Composable
 private fun SignInWhenSessionRejected(gate: AuthGateViewModel, navController: NavHostController) {
    val sessionRejected by gate.sessionRejected.collectAsStateWithLifecycle()
    LaunchedEffect(sessionRejected, navController) {
        if (!sessionRejected) return@LaunchedEffect
        navController.navigate(Login) {
            popUpTo(0) { inclusive = true }
            launchSingleTop = true
        }
        gate.consumeSessionRejected()
    }
 }
@Composable
 private fun BootSplash() {
    Surface(
@@ -8,6 +8,7 @@ import coil3.SingletonImageLoader
 import coil3.network.okhttp.OkHttpNetworkFetcherFactory
 import coil3.request.crossfade
 import com.fabledsword.minstrel.cache.CacheIndexer
 import com.fabledsword.minstrel.cache.audiocache.CacheBudgetSync
 import com.fabledsword.minstrel.cache.mutations.MutationReplayer
 import com.fabledsword.minstrel.cache.sync.SyncController
 import com.fabledsword.minstrel.di.ApplicationScope
@@ -19,10 +20,10 @@ import com.fabledsword.minstrel.metadata.FreshnessSweeper
 import com.fabledsword.minstrel.notifications.delivery.DeliveryLauncher
 import com.fabledsword.minstrel.player.AudioPrefetcher
 import com.fabledsword.minstrel.player.CoverPrefetcher
 import com.fabledsword.minstrel.player.LikedAudioPinner
 import com.fabledsword.minstrel.player.PlayEventsReporter
 import com.fabledsword.minstrel.player.PlaybackErrorReporter
 import com.fabledsword.minstrel.player.ResumeController
 import com.fabledsword.minstrel.update.data.UpdateBannerController
 import com.fabledsword.minstrel.connectivity.NetworkStatusController
 import dagger.hilt.android.HiltAndroidApp
 import kotlinx.coroutines.CoroutineScope
@@ -79,7 +80,7 @@ class MinstrelApplication :
    /**
     * Same construct-the-singleton trick — DeliveryLauncher starts and stops
     * the background-delivery service and runs the notification catch-up on
-     * every nudge and reconnect (M489 #5347). Without this @Inject no phone
+     * every nudge and reconnect. Without this @Inject no phone
     * notification would ever be posted.
     */
    @Suppress("unused") @Inject lateinit var deliveryLauncher: DeliveryLauncher
@@ -120,6 +121,21 @@ class MinstrelApplication :
     */
    @Suppress("unused") @Inject lateinit var cacheIndexer: CacheIndexer
    /**
     * Same construct-the-singleton trick — CacheBudgetSync's init block
     * feeds the audio cache's evictor the liked set and the Storage caps.
     * Without this @Inject the evictor would never arm, and the cache
     * would grow without a limit.
     */
    @Suppress("unused") @Inject lateinit var cacheBudgetSync: CacheBudgetSync
    /**
     * Same construct-the-singleton trick — LikedAudioPinner's init block
     * downloads liked tracks into the Liked songs budget. Without this
     * @Inject, liking a track would not keep it offline.
     */
    @Suppress("unused") @Inject lateinit var likedAudioPinner: LikedAudioPinner
    /**
     * Same construct-the-singleton trick — AudioPrefetcher's init
     * block subscribes to PlayerController.uiState +
@@ -138,14 +154,6 @@ class MinstrelApplication :
     */
    @Suppress("unused") @Inject lateinit var networkStatusController: NetworkStatusController
    /**
     * Same construct-the-singleton trick — UpdateBannerController polls
     * /api/client/version at launch + every 24h and drives the shell's
     * soft "update available" banner. Without this @Inject the poll
     * loop would never start and the banner would never surface.
     */
    @Suppress("unused") @Inject lateinit var updateBannerController: UpdateBannerController
    /**
     * Same construct-the-singleton trick — FreshnessSweeper's init
     * block starts a 30-min sweep loop that re-fetches cached
@@ -171,7 +179,7 @@ class MinstrelApplication :
     */
    @Suppress("unused") @Inject lateinit var liveEventsDispatcher: LiveEventsDispatcher
-    // Device diagnostics (M9). The reporter gates itself on the account's
+    // Device diagnostics. The reporter gates itself on the account's
    // debug flag; the uploader drains its buffer on a tick / recovery.
    @Suppress("unused") @Inject lateinit var diagnosticsReporter: DiagnosticsReporter
    @Suppress("unused") @Inject lateinit var diagnosticsUploader: DiagnosticsUploader
@@ -181,7 +189,7 @@ class MinstrelApplication :
    override fun onCreate() {
        super.onCreate()
        // Debug builds get the full DebugTree (verbose). Release builds
-        // get a WARN+ tree so operator-driven diagnosis via `adb logcat`
+        // get a WARN+ tree so diagnosis via `adb logcat`
        // still surfaces UPnP / cast failures, OkHttp errors, and our
        // own Timber.w / Timber.e calls — without the chatty DEBUG /
        // INFO traffic flooding the buffer in production.
@@ -229,10 +237,9 @@ class MinstrelApplication :
     * before Coil makes its first request.
     *
     * Crossfade is set here rather than per-call so every cover surface
-     * in the app fades its artwork in instead of snapping it. Art
+     * in the app fades its artwork in instead of snapping it, and
-     * landing a beat after its tile was the most visible pop-in on Home
+     * `ServerImage` fades its placeholder out over the same window so the
-     * (issue #2327); `ServerImage` fades its placeholder out over the
+     * two read as one cross-dissolve.
     * same window so the two read as one cross-dissolve.
     */
    override fun newImageLoader(context: android.content.Context): ImageLoader =
        ImageLoader.Builder(context)
@@ -11,10 +11,9 @@ import javax.inject.Inject
 import javax.inject.Singleton
 /**
- * Read-through accessor for the admin quarantine queue. Mirrors the
+ * Read-through accessor for the admin quarantine queue. No Room cache —
- * Flutter `AdminQuarantineController`. No Room cache — same rationale
+ * same rationale as AdminRequests. Three resolution actions all delete
- * as AdminRequests. Three resolution actions all delete the row from
+ * the row from the queue once the server accepts them.
 * the queue once the server accepts them.
 */
@Singleton
 class AdminQuarantineRepository @Inject constructor(
@@ -14,7 +14,7 @@ import javax.inject.Singleton
 *
 * No Room caching — admin actions are infrequent and don't benefit
 * from offline scrollback. `approve` and `reject` fire direct REST
- * (no mutation queue) because operator confirmation is point-and-shoot;
+ * (no mutation queue) because admin confirmation is point-and-shoot;
 * if the request fails the UI surfaces the error and rolls back.
 */
@Singleton
@@ -33,6 +33,7 @@ class AdminRequestsRepository @Inject constructor(
 private fun RequestWire.toDomain(): RequestRef = RequestRef(
    id = id,
    userId = userId,
    username = username,
    status = RequestStatus.fromWire(status),
    kind = kind,
    artistName = artistName,
@@ -12,7 +12,7 @@ import javax.inject.Inject
 import javax.inject.Singleton
 /**
- * Read-through accessor for the tag-enrichment provider settings (#1521).
+ * Read-through accessor for the tag-enrichment provider settings.
 * No Room caching — admin settings are infrequent point-and-shoot edits;
 * mutations fire direct REST and the ViewModel reconciles on failure.
 * Exceptions propagate to the ViewModel (which maps them via ErrorCopy).
@@ -13,8 +13,8 @@ import javax.inject.Singleton
 /**
 * Read-through accessor for the admin users list + the four per-user
- * mutations. Mirrors Flutter's `AdminUsersController`. Same
+ * mutations. Same no-Room-cache, no-MutationQueue pattern as the other
- * no-Room-cache, no-MutationQueue pattern as the other admin slices.
+ * admin repositories.
 */
@Singleton
 class AdminUsersRepository @Inject constructor(
@@ -39,7 +39,7 @@ class AdminInvitesViewModel @Inject constructor(
    init {
        refresh()
-        // Screen-level auto-recovery (issue #1245): reload a failed list
+        // Screen-level auto-recovery: reload a failed list
        // when server health returns instead of waiting for a manual pull.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
@@ -40,8 +40,8 @@ class AdminQuarantineViewModel @Inject constructor(
    /**
     * One-shot messages for the screen's snackbar. A failed action has to say
     * why: the row quietly reappearing reads as a glitch, and for a Delete
-     * file refused by a read-only library it hides the one thing the
+     * file refused by a read-only library it hides the one thing an
-     * operator can fix (#3918).
+     * admin can fix.
     */
    private val transientMessagesChannel = Channel<String>(Channel.BUFFERED)
    val transientMessages: Flow<String> = transientMessagesChannel.receiveAsFlow()
@@ -53,7 +53,7 @@ class AdminQuarantineViewModel @Inject constructor(
                .filter { it.kind.startsWith("quarantine.") }
                .collect { refresh() }
        }
-        // Screen-level auto-recovery (issue #1245): reload a failed list
+        // Screen-level auto-recovery: reload a failed list
        // when server health returns instead of waiting for a manual pull.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
@@ -71,7 +71,6 @@ fun AdminRequestsScreen(
                )
                is AdminRequestsUiState.Success -> RequestList(
                    rows = s.rows,
                    usernames = s.usernames,
                    onApprove = viewModel::approve,
                    onReject = viewModel::reject,
                )
@@ -83,7 +82,6 @@ fun AdminRequestsScreen(
@Composable
 private fun RequestList(
    rows: List<RequestRef>,
    usernames: Map<String, String>,
    onApprove: (String) -> Unit,
    onReject: (String) -> Unit,
 ) {
@@ -91,9 +89,9 @@ private fun RequestList(
        items(items = rows, key = { it.id }) { req ->
            AdminRequestRow(
                req = req,
-                requester = usernames[req.userId]
+                requester = req.username.ifEmpty {
-                    ?: req.userId.takeIf { it.isNotEmpty() }?.take(USER_ID_PREFIX_LEN)
+                    req.userId.take(USER_ID_PREFIX_LEN).ifEmpty { "unknown" }
-                    ?: "unknown",
+                },
                onApprove = { onApprove(req.id) },
                onReject = { onReject(req.id) },
            )
@@ -160,6 +158,6 @@ private fun AdminRequestRow(
    }
 }
-// UUID prefix length used as a friendlier-than-raw-UUID fallback when
+// UUID prefix length used as a friendlier-than-raw-UUID fallback when a
-// the admin users list fetch fails and we can't resolve userId → name.
+// row comes back without the requester's username.
 private const val USER_ID_PREFIX_LEN = 8
@@ -3,7 +3,6 @@ package com.fabledsword.minstrel.admin.ui
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.fabledsword.minstrel.admin.data.AdminRequestsRepository
 import com.fabledsword.minstrel.admin.data.AdminUsersRepository
 import com.fabledsword.minstrel.api.ErrorCopy
 import com.fabledsword.minstrel.connectivity.NetworkStatusController
 import com.fabledsword.minstrel.connectivity.recoveries
@@ -11,8 +10,6 @@ import com.fabledsword.minstrel.events.EventsStream
 import com.fabledsword.minstrel.models.RequestRef
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.async
 import kotlinx.coroutines.coroutineScope
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
@@ -25,17 +22,13 @@ private val RELEVANT_EVENT_KINDS = setOf("request.status_changed")
 sealed interface AdminRequestsUiState {
    data object Loading : AdminRequestsUiState
    data object Empty : AdminRequestsUiState
-    data class Success(
+    data class Success(val rows: List<RequestRef>) : AdminRequestsUiState
        val rows: List<RequestRef>,
        val usernames: Map<String, String>,
    ) : AdminRequestsUiState
    data class Error(val message: String) : AdminRequestsUiState
 }
@HiltViewModel
 class AdminRequestsViewModel @Inject constructor(
    private val repository: AdminRequestsRepository,
    private val usersRepository: AdminUsersRepository,
    private val eventsStream: EventsStream,
    networkStatus: NetworkStatusController,
 ) : ViewModel() {
@@ -50,7 +43,7 @@ class AdminRequestsViewModel @Inject constructor(
                .filter { it.kind in RELEVANT_EVENT_KINDS }
                .collect { refresh() }
        }
-        // Screen-level auto-recovery (issue #1245): reload a failed list
+        // Screen-level auto-recovery: reload a failed list
        // when server health returns instead of waiting for a manual pull.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
@@ -62,19 +55,11 @@ class AdminRequestsViewModel @Inject constructor(
    fun refresh(): Job = viewModelScope.launch {
        internal.value = AdminRequestsUiState.Loading
        try {
-            val (rows, usernames) = coroutineScope {
+            val rows = repository.list()
                val requestsJob = async { repository.list() }
                val usernamesJob = async {
                    runCatching {
                        usersRepository.list().associate { it.id to it.username }
                    }.getOrDefault(emptyMap())
                }
                requestsJob.await() to usernamesJob.await()
            }
            internal.value = if (rows.isEmpty()) {
                AdminRequestsUiState.Empty
            } else {
-                AdminRequestsUiState.Success(rows = rows, usernames = usernames)
+                AdminRequestsUiState.Success(rows = rows)
            }
        } catch (
            @Suppress("TooGenericExceptionCaught") e: Throwable,
@@ -101,7 +86,7 @@ class AdminRequestsViewModel @Inject constructor(
            internal.value = if (filtered.isEmpty()) {
                AdminRequestsUiState.Empty
            } else {
-                AdminRequestsUiState.Success(rows = filtered, usernames = before.usernames)
+                AdminRequestsUiState.Success(rows = filtered)
            }
        }
        viewModelScope.launch {
@@ -38,7 +38,7 @@ class AdminTagSourcesViewModel @Inject constructor(
    init {
        refresh()
        // Screen-level auto-recovery: reload a failed list when server
-        // health returns instead of waiting for a manual pull (issue #1245).
+        // health returns instead of waiting for a manual pull.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
                if (internal.value is AdminTagSourcesUiState.Error) refresh()
@@ -33,7 +33,7 @@ class AdminUsersViewModel @Inject constructor(
    init {
        refresh()
-        // Screen-level auto-recovery (issue #1245): reload a failed list
+        // Screen-level auto-recovery: reload a failed list
        // when server health returns instead of waiting for a manual pull.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
@@ -8,22 +8,16 @@ import javax.inject.Singleton
 /**
 * Attaches the session cookie from [AuthStore] to Minstrel-server
- * requests, captures Set-Cookie from successful responses (login
+ * requests (waiting for the stored one to load at launch), captures
- * flow), and clears the store on 401 so downstream code can react
+ * Set-Cookie from successful responses (login flow), and signs out when
- * to logout.
+ * the server refuses the cookie a request carried.
 *
 * Mirrors the Flutter Dio interceptor pattern.
 *
 * Scoped to the [BaseUrlInterceptor.PLACEHOLDER_HOST] sentinel host
- * the same way BaseUrlInterceptor is. Drift #568 / #569 caught two
+ * the same way BaseUrlInterceptor is. The shared OkHttpClient also
- * leaks here: (1) the session cookie was being attached to every
+ * serves Coil's image fetches to external hosts such as
- * external request the shared OkHttpClient services — including
+ * artwork.musicbrainz.org and coverartarchive.org; unscoped, this
- * Coil image fetches to artwork.musicbrainz.org / coverartarchive.org
+ * would hand the session identifier to third-party logging, and a 401
- * — exposing the session
+ * from any of those hosts would sign the user out of Minstrel.
 * identifier to third-party logging; (2) a 401 from any of those
 * external hosts silently wiped the user's Minstrel session.
 * Restricting both attach + clear to placeholder-host requests
 * closes both gaps.
 */
@Singleton
 class AuthCookieInterceptor @Inject constructor(
@@ -38,7 +32,7 @@ class AuthCookieInterceptor @Inject constructor(
            // session. Pass through untouched.
            return chain.proceed(original)
        }
-        val cookie = authStore.sessionCookie.value
+        val cookie = authStore.sessionCookieForRequest()
        val request = original.newBuilder().apply {
            if (!cookie.isNullOrEmpty()) header("Cookie", cookie)
        }.build()
@@ -46,7 +40,11 @@ class AuthCookieInterceptor @Inject constructor(
        val response = chain.proceed(request)
        if (response.code == HTTP_UNAUTHORIZED) {
-            authStore.setSessionCookie(null)
+            // Only a refusal of the cookie this request carried ends the
            // session. A request sent without one says nothing about the
            // stored login, and a refusal of an older cookie must not
            // discard one a sign-in has stored since.
            if (!cookie.isNullOrEmpty()) authStore.dropRejectedSessionCookie(cookie)
        } else if (response.isSuccessful) {
            // Capture the first Set-Cookie pair on login; subsequent
            // responses that include Set-Cookie keep the store fresh.
@@ -17,15 +17,14 @@ import javax.inject.Singleton
 *
 * This interceptor closes the gap: Retrofit can stay built with the
 * placeholder forever, and every actual Minstrel-bound request gets
- * retargeted at the live AuthStore value. Lets the user change
+ * retargeted at the live AuthStore value, so the user can change the
- * server URL in Settings without an app relaunch (Phase 11 wiring).
+ * server URL in Settings without an app relaunch.
 *
 * Only requests whose host is the [PLACEHOLDER_HOST] sentinel are
 * rewritten. Absolute external URLs — artwork from
 * artwork.musicbrainz.org / coverartarchive.org, for example — must
- * reach their authored host unchanged; rewriting them to the
+ * reach their authored host unchanged: rewritten to the Minstrel host
- * Minstrel host produced 404s the user saw as missing Discover
+ * they 404, and Discover suggestions show no covers.
 * suggestion covers.
 *
 * No-op when the stored base URL is unparseable (falls through to
 * whatever Retrofit had) — that case shows up as a transport-level
@@ -16,11 +16,10 @@ object MinstrelServerRequest
 /**
 * Plain `http://` to the Minstrel server is allowed only when the connection
- * actually lands on a private address (family security baseline #5105,
+ * actually lands on a private address.
 * practice 13).
 *
 * Cleartext stays permitted app-wide for LAN servers and UPnP
- * (network_security_config.xml, #2439), but a password or session cookie sent
+ * (network_security_config.xml), but a password or session cookie sent
 * over plain HTTP to a public address can be read by anyone on the path.
 *
 * Checked per connection, on the address the socket really reached, not on
@@ -44,9 +44,9 @@ object ErrorCopy {
    }
    /**
-     * Codes whose server message carries specifics the operator needs in
+     * Codes whose server message carries specifics an admin needs in
     * order to act — which directory, which uid — that fixed copy cannot say.
-     * For these the message follows the copy (#3918). Kept to a named set on
+     * For these the message follows the copy. Kept to a named set on
     * purpose: most server messages are internal detail. Mirrors web's
     * errors.ts.
     */
@@ -57,16 +57,15 @@ object NetworkModule {
            .addInterceptor(reachability)
            // AuthCookieInterceptor MUST run before BaseUrlInterceptor.
            // Both scope on `host == PLACEHOLDER_HOST` to distinguish
-            // Minstrel-server requests from external image fetches
+            // Minstrel-server requests from external image fetches. If
-            // (drift #568 / #569). If BaseUrlInterceptor runs first it
+            // BaseUrlInterceptor runs first it rewrites the host to the real
-            // rewrites the host to the real server before auth sees the
+            // server before auth sees the request, auth's placeholder check
-            // request, auth's placeholder check fails, and the session
+            // fails, and the session cookie is neither attached on outgoing
-            // cookie is neither attached on outgoing requests nor
+            // requests nor captured from Set-Cookie on login — fresh installs
-            // captured from Set-Cookie on login — fresh installs get
+            // get stuck at the Welcome screen. Auth first means it sees
            // stuck at the Welcome screen. Auth first means it sees
            // placeholder.invalid, attaches/captures correctly, then
-            // BaseUrlInterceptor retargets to the live AuthStore host
+            // BaseUrlInterceptor retargets to the live AuthStore host for
-            // for transport.
+            // transport.
            .addInterceptor(auth)
            .addInterceptor(baseUrl)
            .addInterceptor(logging)
@@ -27,9 +27,8 @@ interface AdminInvitesApi {
 }
 /**
- * Body for `POST /api/admin/invites`. The Flutter client omits the
+ * Body for `POST /api/admin/invites`. An empty note is sent as null,
- * field when note is empty; Kotlin/serialization just serializes
+ * which the server treats the same as an absent field.
 * null which the server treats identically.
 */
@Serializable
 data class CreateInviteBody(val note: String? = null)
@@ -12,9 +12,9 @@ import retrofit2.http.POST
 import retrofit2.http.Path
 /**
- * Retrofit interface for `/api/admin/tag-sources` (#1521) — the admin
+ * Retrofit interface for `/api/admin/tag-sources` — the admin surface
- * surface for the tag-enrichment provider settings (#1490). Mirrors the
+ * for the tag-enrichment provider settings. Mirrors the web
- * web integrations "Tag enrichment sources" card. Same shape as the
+ * integrations "Tag enrichment sources" card. Same shape as the
 * cover-sources admin surface; kept independent so a new tag source is
 * added without touching art settings.
 */
@@ -30,7 +30,7 @@ interface CastApi {
 * the 21_600 default (6h) is long enough to play through any typical
 * track without re-minting mid-playback.
 *
- * [level] asks for the leveled stream (M464 #5001): the track rendered at
+ * [level] asks for the leveled stream: the track rendered at
 * the user's loudness gain, which the server works out from their setting.
 * [asAlbum] says the track plays among its album in order, which picks
 * album gain in auto mode. [prerender] says the speaker will fetch it
@@ -7,7 +7,7 @@ import retrofit2.http.Body
 import retrofit2.http.POST
 /**
- * Retrofit interface for device diagnostics ingest (M9). One call
+ * Retrofit interface for device diagnostics ingest. One call
 * uploads a batch of buffered events. The server stores them only when
 * the account's debug_mode_enabled flag is on (it returns 204 otherwise,
 * which the uploader treats as success so it can drop the batch).
@@ -19,8 +19,7 @@ import retrofit2.http.Query
 * second, so the Discover screen searches when the query is submitted,
 * not on every keystroke.
 *
- * Cancel + my-requests-list endpoints live on RequestsApi (Phase 10
+ * Cancel + my-requests-list endpoints live on RequestsApi, not here.
 * Commit B), not here.
 */
 interface DiscoverApi {
    @GET("api/discover/suggestions")
@@ -56,16 +56,15 @@ interface LibraryApi {
    @GET("api/library/shuffle")
    suspend fun shuffleLibrary(@Query("limit") limit: Int = 100): List<TrackWire>
-    // Browse axes (#367). Both indexes are unpaged by design: the client needs
+    // Browse axes. Both indexes are unpaged by design: the client needs
    // the whole set to render a browsable picker, and even a messy library
    // yields hundreds of rows, not thousands.
    //
-    // These read the server rather than the local cache on purpose. The cache
+    // These read the server rather than the local cache on purpose: the
-    // is a full mirror of the library, but /api/library/sync ships tracks whose
+    // server's index leaves out tracks whose files are missing and is the
-    // files are missing and carries no flag for it (#2704), while the browse
+    // one the web client shows, so the two clients agree. The cache carries
-    // index filters them out -- so a locally-computed index would disagree with
+    // the same mark (cached_tracks.missing), but an index built from it
-    // the server's and with the web client. One source of truth wins over
+    // would be a second copy of the server's grouping that could drift.
    // offline capability here until #2704 is resolved.
    @GET("api/library/genres")
    suspend fun getGenres(): List<GenreCountWire>
@@ -92,9 +92,7 @@ data class ChangePasswordRequest(
 /**
 * Body for `PUT /api/me/listenbrainz`. Either `token` or `enabled`
- * is set; the server treats other fields as untouched. Mirrors
+ * is set; the server treats other fields as untouched.
 * Flutter's `setListenBrainzToken` / `setListenBrainzEnabled` split
 * over a single endpoint shape.
 */
@Serializable
 data class ListenBrainzPutBody(
@@ -10,7 +10,7 @@ import retrofit2.http.Path
 import retrofit2.http.Query
 /**
- * The notifications inbox and its per-user settings (M489). The server
+ * The notifications inbox and its per-user settings. The server
 * renders each notice's title, body and link, so the app shows them as given.
 */
 interface NotificationsApi {
@@ -49,7 +49,7 @@ interface PlaylistsApi {
    suspend fun refreshSystem(@Path("kind") variant: String): RefreshSystemResponse
    /**
-     * GET /api/playlists/system/{kind}/shuffle (#415 / #411 R2). Returns
+     * GET /api/playlists/system/{kind}/shuffle. Returns
     * the system playlist's tracks in rotation-aware order without
     * rebuilding — used by the Home play-button overlay so taps on For
     * You / Discover / Today's mix advance rotation rather than picking
@@ -60,8 +60,8 @@ interface PlaylistsApi {
 }
 /**
- * POST /api/playlists/{id}/tracks body. Server expects snake_case
+ * POST /api/playlists/{id}/tracks body. The server expects snake_case
- * `track_ids` per the Flutter wire shape.
+ * `track_ids`.
 */
@Serializable
 data class AppendTracksRequest(
@@ -13,7 +13,7 @@ import retrofit2.http.Path
 *
 * Both flag and unflag are user-scoped — callers act on their own
 * quarantine entries. The cross-user admin surface is a separate
- * `/api/admin/quarantine` route (Phase 10 Commit D).
+ * `/api/admin/quarantine` route.
 */
 interface QuarantineApi {
    @GET("api/quarantine/mine")
@@ -4,7 +4,7 @@ import com.fabledsword.minstrel.models.wire.ReplayGainResponseWire
 import retrofit2.http.GET
 import retrofit2.http.Query
-/** The player's loudness lookup (#4997), kept apart from the browse surface in [LibraryApi]. */
+/** The player's loudness lookup, kept apart from the browse surface in [LibraryApi]. */
 interface ReplayGainApi {
    /**
     * ReplayGain values for up to 200 comma-separated track ids. An id
@@ -10,7 +10,7 @@ import retrofit2.http.Path
 *
 * Server scopes results to the caller — admins see only their own
 * requests through this endpoint. The cross-user admin view lives on
- * a separate `/api/admin/requests` route (Phase 10 Commit D).
+ * a separate `/api/admin/requests` route.
 *
 * The DELETE endpoint returns the cancelled row (not 204) so the UI
 * can patch local state without a refetch.
@@ -6,7 +6,7 @@ import retrofit2.http.GET
 import retrofit2.http.Query
 /**
- * Retrofit interface for `/api/library/sync` (#357). The endpoint
+ * Retrofit interface for `/api/library/sync`. The endpoint
 * returns three possible status codes that the SyncController
 * branches on:
 *   - 200: parsed body with cursor + upserts + deletes
@@ -57,7 +57,7 @@ class AuthController @Inject constructor(
            }
        }
        // Refresh from /api/me on startup so a remotely-changed account
-        // flag (e.g. admin enabling debug mode, M9) reaches the device
+        // flag (e.g. an admin enabling debug mode) reaches the device
        // without a re-login. Best-effort; failures keep the cached value.
        scope.launch { refreshProfile() }
    }
@@ -89,8 +89,11 @@ class AuthController @Inject constructor(
     * + persisted userJson. Carries account-level flags (debug mode)
     * that aren't in the login response. Best-effort: a network failure
     * leaves the cached identity untouched. No-op when signed out.
     * Waits for the stored login to load first: at launch this runs before
     * it has, and would otherwise read the user as signed out and skip.
     */
    suspend fun refreshProfile() {
        authStore.awaitSessionHydrated()
        if (!isSignedIn) return
        val p = runCatching { meApi.getProfile() }.getOrNull() ?: return
        val user = UserRef(
@@ -12,6 +12,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import kotlinx.coroutines.withTimeoutOrNull
@@ -35,13 +36,13 @@ import javax.inject.Singleton
 * sees the new value immediately; the DAO write coroutine catches up
 * shortly after.
 *
- * **The session cookie is the exception** (M462 #4985): it is persisted
+ * **The session cookie is the exception**: it is persisted through
- * through [SessionVault] (Keystore-encrypted), not the Room row. On the
+ * [SessionVault] (Keystore-encrypted), not the Room row. A cookie still
- * first launch after the upgrade, a cookie still in the row is moved into
+ * in the row is moved into the vault on launch and the column cleared,
- * the vault and the column cleared, so nobody is signed out by the change.
+ * so nobody is signed out by the move. If the Keystore cannot be used
- * If the Keystore cannot be used on a device, the cookie stays in the row
+ * on a device, the cookie stays in the row rather than being lost.
- * as before rather than being lost. [awaitSessionHydrated] lets a caller
+ * [awaitSessionHydrated] lets a caller that needs a definitive answer
- * that needs a definitive answer (the auth gate) wait for this.
+ * (the auth gate) wait for this.
 */
 // AuthStore is the single-row facade over auth_session (de-facto
 // app_preferences — see entity comment). It legitimately owns one
@@ -81,7 +82,7 @@ class AuthStore @Inject constructor(
    private val normalizationState = MutableStateFlow(NormalizationPrefs.DEFAULT)
    val normalization: StateFlow<NormalizationPrefs> = normalizationState.asStateFlow()
-    // Background delivery (M489 #5347): the device's choice, on by default.
+    // Background delivery: the device's choice, on by default.
    // The shade's high-water mark lives in the same row but is read and
    // written through the DAO by NotificationSync, awaited, never cached here.
    private val backgroundDeliveryState = MutableStateFlow(true)
@@ -131,8 +132,8 @@ class AuthStore @Inject constructor(
    /**
     * Suspends until the stored session cookie has been loaded into
-     * [sessionCookie], or [HYDRATION_DEADLINE_MS] passes (rule 156: a wedged
+     * [sessionCookie], or [HYDRATION_DEADLINE_MS] passes, so a wedged
-     * Keystore must not leave the start screen spinning). Returns false on
+     * Keystore cannot leave the start screen spinning. Returns false on
     * the deadline; the caller then decides from whatever has loaded, and a
     * late hydration still lands in [sessionCookie].
     */
@@ -148,6 +149,49 @@ class AuthStore @Inject constructor(
        scope.launch { cookieLock.withLock { storeCookie(value) } }
    }
    /**
     * The cookie to attach to an outgoing request. Blocks the calling
     * (OkHttp) thread until the stored cookie has loaded, up to
     * [HYDRATION_DEADLINE_MS], so a request made in the first moment after
     * launch carries the login instead of going out without it. Once
     * hydration has finished this is a plain read.
     */
    fun sessionCookieForRequest(): String? {
        if (!cookieHydration.isCompleted) {
            runBlocking { withTimeoutOrNull(HYDRATION_DEADLINE_MS) { cookieHydration.await() } }
        }
        return sessionCookieState.value
    }
    /**
     * True once the server has refused the current session (see
     * [dropRejectedSessionCookie]) and the UI has not yet sent the user to
     * sign in. Held rather than fired, so a refusal that lands while the app
     * is in the background is still acted on when it comes back. A sign-out
     * the user asked for does not set it.
     */
    private val sessionRejectedState = MutableStateFlow(false)
    val sessionRejected: StateFlow<Boolean> = sessionRejectedState.asStateFlow()
    /** The UI has opened the sign-in screen for a refused session. */
    fun consumeSessionRejected() {
        sessionRejectedState.value = false
    }
    /**
     * Signs out because the server answered 401 to a request that carried
     * [rejected]. Does nothing when the store has since moved on to another
     * cookie (a sign-in landed meanwhile), so a refusal of an old session
     * never discards a new one. What is persisted is read inside the lock,
     * so a sign-in racing this call is the value that ends up stored.
     */
    fun dropRejectedSessionCookie(rejected: String) {
        if (!sessionCookieState.compareAndSet(rejected, null)) return
        cookieTouched = true
        scope.launch { cookieLock.withLock { storeCookie(sessionCookieState.value) } }
        sessionRejectedState.value = true
    }
    private suspend fun hydrateSessionCookie() = cookieLock.withLock {
        val legacy = runCatching { dao.get()?.sessionCookie }.getOrNull()
        if (cookieTouched) return@withLock
@@ -19,15 +19,14 @@ import javax.inject.Inject
 import javax.inject.Singleton
 /**
- * Where the session cookie lives at rest (M462 #4985).
+ * Where the session cookie lives at rest.
 *
 * The cookie is a bearer credential: anyone holding it is signed in as the
- * user until the server expires or revokes it. It used to sit in plain text
+ * user until the server expires or revokes it. In plain text it would be
- * in the Room `auth_session` row, readable from any copy of the app's data
+ * readable from any copy of the app's data directory (a rooted device, an
- * directory (a rooted device, an adb backup of a debuggable build, a
+ * adb backup of a debuggable build, a forensic image). Only ciphertext is
- * forensic image). Now only ciphertext is stored, under an AES key that
+ * stored, under an AES key that lives in the Android Keystore and never
- * lives in the Android Keystore and never leaves it, so a copy of the
+ * leaves it, so a copy of the files alone yields nothing usable.
 * files alone yields nothing usable.
 */
 interface SessionVault {
    /** The stored cookie, or null when none is stored or it can't be decrypted. */
@@ -19,8 +19,8 @@ import javax.inject.Inject
 * persisted auth state. Reads the row from AuthSessionDao directly, and
 * the session cookie only after [AuthStore.awaitSessionHydrated]: both
 * StateFlows default to null until their async load lands, and we need a
- * definitive answer before drawing any nav graph. The cookie is no longer
+ * definitive answer before drawing any nav graph. The cookie lives in the
- * in the row (it lives in the Keystore-backed SessionVault, #4985).
+ * Keystore-backed SessionVault, not the row.
 *
 *   - no row at all          → ServerUrl   (first launch)
 *   - row with baseUrl, no cookie → Login   (URL configured, not yet signed in)
@@ -38,6 +38,15 @@ class AuthGateViewModel @Inject constructor(
    private val internal = MutableStateFlow<Any?>(null)
    val startDestination: StateFlow<Any?> = internal.asStateFlow()
    /**
     * True when the server has ended the session while the app was in use;
     * the root NavHost answers by opening the sign-in screen, then calls
     * [consumeSessionRejected].
     */
    val sessionRejected: StateFlow<Boolean> = authStore.sessionRejected
    fun consumeSessionRejected() = authStore.consumeSessionRejected()
    init {
        viewModelScope.launch {
            authStore.awaitSessionHydrated()
@@ -18,15 +18,13 @@ import javax.inject.Singleton
 * Populates `audio_cache_index` from playback so the offline pools
 * ([ShuffleSource]) and the cached indicator have a data source.
 *
- * Mirrors the user-visible behavior of Flutter's `AudioCacheManager`
+ * A track you play gets cached as a side effect of streaming, and
- * (`registerStreamCache` + `touch`): a track you play gets cached as a
+ * playing it bumps its recency. Media3's `SimpleCache` is the real byte
- * side effect of streaming, and playing it bumps its recency. The
+ * store (span-based, keyed by trackId via the MediaItem's custom cache
- * Android idiom differs intentionally — Media3's `SimpleCache` is the
+ * key), so this index is a lightweight *play-recency* record
- * real byte store (span-based, keyed by trackId via the MediaItem's
+ * (source = INCIDENTAL), not a file-per-track table. SimpleCache stays
- * custom cache key), so this index is a lightweight *play-recency*
+ * the source of truth for "is it actually on disk"; this index orders
- * record (source = INCIDENTAL) rather than Flutter's file-per-track
+ * "recently played" for the offline pools.
 * table. SimpleCache stays the source of truth for "is it actually on
 * disk"; this index orders "recently played" for the offline pools.
 *
 * State observed against [PlayerController.uiState], deduped by track
 * id so each entry into the player records once. Eager-constructed via
@@ -19,11 +19,10 @@ private const val POOL_LIMIT = 100
 * storage/eviction-only and never filters playback — exactly what
 * this relies on.
 *
- * Divergence note: Flutter's `audioCacheIndex` only holds fully-cached
+ * The index records plays (see `CacheIndexer`), not residency, so the
- * tracks, so its pools are inherently resident. Android's index records
+ * recency list is intersected with true Media3 SimpleCache residency
- * plays (see `CacheIndexer`), so the recency list is intersected with
+ * here — the pool never offers a played-then-evicted track that would
- * true Media3 SimpleCache residency here — the pool never offers a
+ * fail to play offline.
 * played-then-evicted track that would fail to play offline.
 *
 * Surfaced on Home's Playlists row only when offline; tap shuffles +
 * plays the pool from the cache.
@@ -58,7 +57,7 @@ class ShuffleSource @Inject constructor(
        if (orderedIds.isEmpty()) return emptyList()
        val byId = trackDao.getByIds(orderedIds).associateBy { it.id }
        return orderedIds.mapNotNull { id ->
-            // Clear the server's missing mark (#2704). Every id reaching here
+            // Clear the server's missing mark. Every id reaching here
            // came through residentIdsByRecency, which already proved the
            // AUDIO is in the local cache — so these play regardless of what
            // the server has lost, and the queue filter in PlayerController
@@ -0,0 +1,122 @@
 package com.fabledsword.minstrel.cache.audiocache
 import java.util.TreeSet
 /** Which budget a cached track's bytes count against. */
 enum class CacheBucket { LIKED, RECENT }
 /**
 * The bookkeeping behind [TwoBucketCacheEvictor]: which budget each cached
 * span counts against, how full each budget is, and which span to drop
 * next. It knows nothing of Media3, so it is tested directly.
 *
 * A span belongs to [CacheBucket.LIKED] when its key (the track id) is in
 * the liked set, and to [CacheBucket.RECENT] otherwise. A track that is
 * liked and also recently played is therefore charged to Liked only; the
 * two budgets never count the same bytes. Each bucket drops its own
 * least-recently-used span first, so filling one never evicts the other.
 *
 * Nothing is evicted until [setLiked] has been called once. Before then
 * every span would read as Recently played, and trimming at the Recently
 * played cap would throw away liked audio at startup.
 *
 * Not thread-safe; the evictor serialises every call.
 */
 class BucketLedger<S : Any>(
    private val keyOf: (S) -> String,
    private val lengthOf: (S) -> Long,
    lruOrder: Comparator<S>,
 ) {
    private val spans = mapOf(
        CacheBucket.LIKED to TreeSet(lruOrder),
        CacheBucket.RECENT to TreeSet(lruOrder),
    )
    private val bytes = mutableMapOf(CacheBucket.LIKED to 0L, CacheBucket.RECENT to 0L)
    private val spansByKey = HashMap<String, MutableSet<S>>()
    private val bucketByKey = HashMap<String, CacheBucket>()
    private var liked: Set<String> = emptySet()
    private var armed = false
    /** Cap on Liked bytes; 0 means unlimited. */
    var likedCapBytes: Long = 0L
    /** Cap on Recently played bytes; 0 means unlimited. */
    var recentCapBytes: Long = 0L
    fun bucketOf(key: String): CacheBucket =
        if (key in liked) CacheBucket.LIKED else CacheBucket.RECENT
    fun bytesIn(bucket: CacheBucket): Long = bytes.getValue(bucket)
    /** Bytes the Liked budget can still take; [Long.MAX_VALUE] when unlimited. */
    fun likedRoomBytes(): Long = when {
        likedCapBytes <= 0L -> Long.MAX_VALUE
        else -> (likedCapBytes - bytesIn(CacheBucket.LIKED)).coerceAtLeast(0L)
    }
    fun add(span: S) {
        val key = keyOf(span)
        val bucket = bucketByKey[key] ?: bucketOf(key).also { bucketByKey[key] = it }
        if (spans.getValue(bucket).add(span)) {
            bytes[bucket] = bytesIn(bucket) + lengthOf(span)
            spansByKey.getOrPut(key) { HashSet() }.add(span)
        }
    }
    fun remove(span: S) {
        val key = keyOf(span)
        val bucket = bucketByKey[key] ?: return
        if (spans.getValue(bucket).remove(span)) {
            bytes[bucket] = bytesIn(bucket) - lengthOf(span)
        }
        val forKey = spansByKey[key] ?: return
        forKey.remove(span)
        if (forKey.isEmpty()) {
            spansByKey.remove(key)
            bucketByKey.remove(key)
        }
    }
    /**
     * Replace the liked set and move every cached track whose bucket
     * changed: a newly liked track's bytes leave Recently played for Liked,
     * an unliked track's go the other way. Arms eviction.
     */
    fun setLiked(ids: Set<String>) {
        liked = ids
        armed = true
        val moves = bucketByKey.filter { (key, bucket) -> bucketOf(key) != bucket }.keys.toList()
        for (key in moves) {
            val from = bucketByKey.getValue(key)
            val to = bucketOf(key)
            for (span in spansByKey[key].orEmpty()) {
                if (spans.getValue(from).remove(span)) {
                    bytes[from] = bytesIn(from) - lengthOf(span)
                    spans.getValue(to).add(span)
                    bytes[to] = bytesIn(to) + lengthOf(span)
                }
            }
            bucketByKey[key] = to
        }
    }
    /**
     * The span to drop next, or null when both budgets fit. [pendingKey] and
     * [pendingBytes] describe a write about to start, so room is made for it
     * in its own bucket first. Recently played is trimmed before Liked.
     */
    fun nextEviction(pendingKey: String? = null, pendingBytes: Long = 0L): S? {
        if (!armed) return null
        val pendingBucket = pendingKey?.let(::bucketOf)
        return listOf(CacheBucket.RECENT, CacheBucket.LIKED).firstNotNullOfOrNull { bucket ->
            val incoming = if (bucket == pendingBucket) pendingBytes.coerceAtLeast(0L) else 0L
            oldestIfOver(bucket, incoming)
        }
    }
    private fun oldestIfOver(bucket: CacheBucket, incoming: Long): S? {
        val cap = if (bucket == CacheBucket.LIKED) likedCapBytes else recentCapBytes
        val over = cap > 0L && bytesIn(bucket) + incoming > cap
        return if (over) spans.getValue(bucket).firstOrNull() else null
    }
 }
@@ -0,0 +1,40 @@
 package com.fabledsword.minstrel.cache.audiocache
 import com.fabledsword.minstrel.auth.AuthStore
 import com.fabledsword.minstrel.di.ApplicationScope
 import com.fabledsword.minstrel.likes.data.LikesRepository
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 import javax.inject.Singleton
 /**
 * Keeps [TwoBucketCacheEvictor] in step with the signed-in user's liked
 * tracks and the Storage caps. A like moves that track's cached audio into
 * the Liked budget, an unlike moves it out, and a cap change trims at once.
 *
 * The liked set only flows once a user is signed in, and the evictor drops
 * nothing until it has one, so liked audio is never trimmed as Recently
 * played while the session is still loading.
 *
 * Eager-constructed via the construct-the-singleton trick in
 * `MinstrelApplication`.
 */
@Singleton
 class CacheBudgetSync @Inject constructor(
    likes: LikesRepository,
    authStore: AuthStore,
    evictor: TwoBucketCacheEvictor,
    @ApplicationScope scope: CoroutineScope,
 ) {
    init {
        scope.launch(Dispatchers.IO) {
            combine(likes.observeSignedInLikedTrackIds(), authStore.cacheSettings, ::Pair)
                .collect { (ids, settings) ->
                    evictor.update(ids, settings.likedCapBytes, settings.rollingCapBytes)
                }
        }
    }
 }
@@ -1,23 +0,0 @@
 package com.fabledsword.minstrel.cache.audiocache
 /**
 * Defaults for the 2-bucket audio cache.
 *
 *  - `likedCapBytes`: cap for the protected bucket — cached files for
 *    tracks the user has liked. Evicted only after the rolling bucket
 *    is fully drained (almost never under normal use).
 *  - `rollingCapBytes`: cap for the unprotected bucket — incidental /
 *    auto-prefetch downloads. LRU within this bucket.
 *
 * Phase 11 (Settings) will allow user overrides; the values are kept
 * generous so first-time installs work well without configuration.
 */
 data class CacheConfig(
    val likedCapBytes: Long = DEFAULT_LIKED_CAP_BYTES,
    val rollingCapBytes: Long = DEFAULT_ROLLING_CAP_BYTES,
 ) {
    companion object {
        const val DEFAULT_LIKED_CAP_BYTES: Long = 200L * 1024 * 1024 // 200 MiB
        const val DEFAULT_ROLLING_CAP_BYTES: Long = 150L * 1024 * 1024 // 150 MiB
    }
 }
@@ -9,19 +9,19 @@ private const val DEFAULT_PREFETCH_WINDOW = 5
 * User-tunable audio cache settings. Persisted as a JSON
 * blob on the auth_session single-row table via [AuthStore].
 *
- * - [likedCapBytes]: budget for cached files of liked tracks. 0 means
+ * - [likedCapBytes]: the Liked songs budget, for the cached audio of
- *   unlimited. Effective at next app start (SimpleCache is built once
+ *   liked tracks. 0 means unlimited.
- *   per process).
+ * - [rollingCapBytes]: the Recently played budget, for everything else
- * - [rollingCapBytes]: budget for incidental / auto-prefetch downloads.
+ *   streamed or prefetched. 0 means unlimited.
- *   Same 0=unlimited / restart-to-apply caveat.
+ *   A track that is liked and also recently played counts against Liked
- * - [prefetchWindow]: 1..10. Number of next-tracks the prefetcher
+ *   only. Both caps apply as soon as they change ([TwoBucketCacheEvictor]).
- *   pre-downloads. Has no effect until the prefetcher lands (separate
+ * - [prefetchWindow]: 1..10. Number of next-tracks `AudioPrefetcher`
- *   audit follow-up) — persisted now so the user can pre-configure.
+ *   pre-downloads.
- * - [cacheLikedTracks]: when true, liking a track should also pin its
+ * - [cacheLikedTracks]: "Keep liked songs offline". When true,
- *   audio to the liked-cache bucket. Has no effect until pin-on-like
+ *   `LikedAudioPinner` downloads liked tracks into the Liked budget on
- *   lands (separate follow-up).
+ *   Wi-Fi, most recently liked first, while the budget has room.
 *
- * Defaults match Flutter: 5 GiB per bucket, prefetch=5, cache-liked=true.
+ * Defaults: 5 GiB per bucket, prefetch=5, cache-liked=true.
 */
@Serializable
 data class CacheSettings(
@@ -0,0 +1,112 @@
 package com.fabledsword.minstrel.cache.audiocache
 import androidx.media3.common.C
 import androidx.media3.datasource.cache.Cache
 import androidx.media3.datasource.cache.CacheEvictor
 import androidx.media3.datasource.cache.CacheSpan
 import javax.inject.Inject
 import javax.inject.Singleton
 /**
 * Bytes held against each audio-cache budget, and how much more the Liked
 * budget can take ([Long.MAX_VALUE] when it is unlimited).
 */
 data class CacheUsage(val likedBytes: Long, val recentBytes: Long, val likedRoomBytes: Long)
 /**
 * The audio cache's eviction policy: two budgets, Liked songs and Recently
 * played, each with its own cap and its own least-recently-used order (see
 * [BucketLedger]). SimpleCache takes exactly one evictor, so this one
 * carries both budgets.
 *
 * [CacheBudgetSync] feeds it the signed-in user's liked set and the caps
 * from Storage settings, so a like, an unlike or a cap change applies at
 * once, without restarting the app.
 *
 * Locking: SimpleCache calls every [CacheEvictor] method while holding its
 * own monitor. Outside calls take the cache's monitor first and the
 * ledger's second, the same order as those callbacks, so the two never
 * deadlock.
 */
@Singleton
 class TwoBucketCacheEvictor @Inject constructor() : CacheEvictor {
    private val ledger = BucketLedger<CacheSpan>(
        keyOf = { it.key },
        lengthOf = { it.length },
        lruOrder = compareBy<CacheSpan> { it.lastTouchTimestamp }.then(naturalOrder()),
    )
    @Volatile private var cache: Cache? = null
    /** Called once the SimpleCache exists, so updates can trim it. */
    fun attach(cache: Cache) {
        this.cache = cache
    }
    /** Apply a new liked set and caps, then trim whatever no longer fits. */
    fun update(likedIds: Set<String>, likedCapBytes: Long, recentCapBytes: Long) {
        val c = cache
        val apply = {
            ledger.likedCapBytes = likedCapBytes
            ledger.recentCapBytes = recentCapBytes
            ledger.setLiked(likedIds)
        }
        if (c == null) {
            synchronized(ledger) { apply() }
        } else {
            synchronized(c) {
                synchronized(ledger) {
                    apply()
                    evict(c, pendingKey = null, pendingBytes = 0L)
                }
            }
        }
    }
    fun usage(): CacheUsage = synchronized(ledger) {
        CacheUsage(
            likedBytes = ledger.bytesIn(CacheBucket.LIKED),
            recentBytes = ledger.bytesIn(CacheBucket.RECENT),
            likedRoomBytes = ledger.likedRoomBytes(),
        )
    }
    override fun requiresCacheSpanTouches(): Boolean = true
    override fun onCacheInitialized() = Unit
    override fun onStartFile(cache: Cache, key: String, position: Long, length: Long) {
        synchronized(ledger) {
            evict(cache, key, if (length == C.LENGTH_UNSET.toLong()) 0L else length)
        }
    }
    override fun onSpanAdded(cache: Cache, span: CacheSpan) {
        synchronized(ledger) {
            ledger.add(span)
            evict(cache, pendingKey = null, pendingBytes = 0L)
        }
    }
    override fun onSpanRemoved(cache: Cache, span: CacheSpan) {
        synchronized(ledger) { ledger.remove(span) }
    }
    override fun onSpanTouched(cache: Cache, oldSpan: CacheSpan, newSpan: CacheSpan) {
        synchronized(ledger) {
            ledger.remove(oldSpan)
            ledger.add(newSpan)
            evict(cache, pendingKey = null, pendingBytes = 0L)
        }
    }
    private fun evict(cache: Cache, pendingKey: String?, pendingBytes: Long) {
        while (true) {
            val span = ledger.nextEviction(pendingKey, pendingBytes) ?: return
            cache.removeSpan(span)
            // removeSpan reports back through onSpanRemoved; removing here as
            // well guarantees the loop advances even if it did not.
            ledger.remove(span)
        }
    }
 }
@@ -40,17 +40,12 @@ import com.fabledsword.minstrel.cache.db.entities.DiagnosticEventEntity
 import com.fabledsword.minstrel.cache.db.entities.SyncMetadataEntity
 /**
- * Single Room database for the whole app. Mirrors the Flutter client's
+ * Single Room database for the whole app, one entity family per @Entity.
 * Drift `AppDb` — same logical schema, one entity-family per @Entity.
 *
- * Native v1 starts at schema version 1 (the Flutter Drift schemaVersion 11
+ * The server is the source of truth: the sync controller refills the
- * is an internal client detail; the server is the source of truth and the
+ * cache on first launch. Schema bumps land with explicit `Migration`
- * sync controller refills on first launch). Future schema bumps land per
+ * entries; `fallbackToDestructiveMigration` in `DatabaseModule` rebuilds
- * change with explicit `Migration` entries; `fallbackToDestructiveMigration`
+ * the database from a version that has no migration path.
 * in `DatabaseModule` is the safety net while we're pre-v1.
 *
 * Entity families land in Task 4.2 slices. The set will grow until the
 * whole Drift schema is mirrored.
 */
@Database(
    entities = [
@@ -73,25 +68,25 @@ import com.fabledsword.minstrel.cache.db.entities.SyncMetadataEntity
        CachedNotificationSettingsEntity::class,
    ],
    // v12: + auth_session.backgroundDelivery and notifiedUpTo, the device's
-    // background-delivery choice and its shade high-water mark (M489 #5347).
+    // background-delivery choice and its shade high-water mark.
    // v11: + cached_notifications and cached_notification_settings, the
-    // notifications inbox and its settings (M489). MIGRATION_10_11 creates
+    // notifications inbox and its settings. MIGRATION_10_11 creates
    // both; nothing to backfill, the first refresh fills them.
    // v10: + cached_tracks.trackGain/trackPeak and cached_albums.albumGain/
-    // albumPeak, the ReplayGain values the player levels by (M464 #5000).
+    // albumPeak, the ReplayGain values the player levels by.
    // MIGRATION_9_10 also rewinds the sync cursor, so the next sync re-sends
    // every row and an existing cache gains its values.
    // v9: + auth_session.normalizationJson, the loudness-normalization
-    // preference (M464 #4998). The first schema step with an explicit
+    // preference. The first schema step with an explicit Migration
-    // Migration (MIGRATION_8_9): a destructive rebuild would also wipe this
+    // (MIGRATION_8_9): a destructive rebuild would also wipe this row —
-    // row — the server address and theme — and the queued offline writes,
+    // the server address and theme — and the queued offline writes,
    // which is too much to lose for one added column.
-    // v8: + cached_tracks.missing, the server's missing-file mark (#2704),
+    // v8: + cached_tracks.missing, the server's missing-file mark,
    // so cache-first surfaces stop offering files that cannot stream.
-    // v7: + diagnostic_events table (M9) and the diagnosticsOptOut column
+    // v7: + diagnostic_events table and the diagnosticsOptOut column
-    // on auth_session. Pre-v1 destructive fallback rebuilds on mismatch —
+    // on auth_session. Versions before v8 rebuild destructively, which is
-    // which is exactly right here: the next sync refills every row with the
+    // right for them: the next sync refills every row with the new
-    // new column populated, so there is nothing to migrate by hand.
+    // columns populated, so there is nothing to migrate by hand.
    version = 12,
    exportSchema = true,
 )
@@ -115,7 +110,7 @@ abstract class AppDatabase : RoomDatabase() {
    abstract fun cachedNotificationDao(): CachedNotificationDao
 }
-/** v8 → v9: add the nullable normalization preference column (#4998). */
+/** v8 → v9: add the nullable normalization preference column. */
 val MIGRATION_8_9: Migration = object : Migration(8, 9) {
    override fun migrate(db: SupportSQLiteDatabase) {
        db.execSQL("ALTER TABLE auth_session ADD COLUMN normalizationJson TEXT")
@@ -123,7 +118,7 @@ val MIGRATION_8_9: Migration = object : Migration(8, 9) {
 }
 /**
- * v9 → v10: the gain columns (#5000). Rows synced before this carry no gains,
+ * v9 → v10: the gain columns. Rows synced before this carry no gains,
 * and the sync is incremental, so it would never re-send them: the cursor goes
 * back to 0 and the next sync is a full one, upserting every row in place.
 */
@@ -138,7 +133,7 @@ val MIGRATION_9_10: Migration = object : Migration(9, 10) {
 }
 /**
- * v10 → v11: the notifications inbox cache and its settings (M489). The SQL
+ * v10 → v11: the notifications inbox cache and its settings. The SQL
 * matches what Room generates for the two entities; Room checks it on open.
 */
 val MIGRATION_10_11: Migration = object : Migration(10, 11) {
@@ -157,7 +152,7 @@ val MIGRATION_10_11: Migration = object : Migration(10, 11) {
 }
 /**
- * v11 → v12: background delivery (M489 #5347). The device choice defaults on,
+ * v11 → v12: background delivery. The device choice defaults on,
 * as the entity's column default says; the high-water mark starts empty, so
 * the first catch-up sets it without announcing anything.
 */
@@ -33,11 +33,10 @@ object DatabaseModule {
    @Singleton
    fun provideDatabase(@ApplicationContext context: Context): AppDatabase =
        Room.databaseBuilder(context, AppDatabase::class.java, DATABASE_NAME)
-            // Pre-v1 safety net: rebuild on any schema mismatch. The sync
+            // Explicit migrations from v8 onward; an older schema has no path
-            // controller refills the cache from the server on first
+            // and rebuilds. The sync controller refills the cache from the
-            // launch, so users lose only the unsynced mutation queue
+            // server on first launch, so a rebuild loses only the unsynced
-            // (acceptable while we're iterating). Replace with explicit
+            // mutation queue.
            // Migration entries before the first tagged release.
            .addMigrations(MIGRATION_8_9, MIGRATION_9_10, MIGRATION_10_11, MIGRATION_11_12)
            .fallbackToDestructiveMigration(dropAllTables = true)
            .build()
@@ -4,17 +4,10 @@ import androidx.room.TypeConverter
 import kotlinx.datetime.Instant
 /**
- * Source category for a cached audio file. Mirrors the Drift `CacheSource`
+ * How a row reached `audio_cache_index`. `CacheIndexer` writes
- * enum used by the Flutter client's `audio_cache_index` table 1:1.
+ * `INCIDENTAL` (the track was played); the other values are stored names
- *
+ * no writer uses. Eviction does not read this: the audio cache's two
- * - `MANUAL`: user explicitly pinned (e.g. "save for offline")
+ * budgets follow the liked set (see `TwoBucketCacheEvictor`).
 * - `AUTO_LIKED`: auto-cached because the track is liked
 * - `AUTO_PLAYLIST`: auto-cached because it's in a pinned playlist
 * - `AUTO_PREFETCH`: pre-warmed by background prefetch heuristics
 * - `INCIDENTAL`: cached as a side effect of playback streaming
 *
 * Eviction priority order (first to evict): INCIDENTAL → AUTO_PREFETCH
 * → AUTO_PLAYLIST → AUTO_LIKED → MANUAL.
 */
 enum class CacheSource { MANUAL, AUTO_LIKED, AUTO_PLAYLIST, AUTO_PREFETCH, INCIDENTAL }
@@ -22,10 +15,8 @@ enum class CacheSource { MANUAL, AUTO_LIKED, AUTO_PLAYLIST, AUTO_PREFETCH, INCID
 * Cross-cutting Room type converters. Registered on `@Database` via
 * `@TypeConverters(MinstrelTypeConverters::class)`.
 *
- * `kotlinx.datetime.Instant` ↔ `Long` epoch millis: the same convention the
+ * `kotlinx.datetime.Instant` ↔ `Long` epoch millis: leaner than ISO-8601
- * Flutter client uses (Drift `text()` column with ISO-8601 strings would
+ * text, and nothing needs human-readable rows in the SQLite file.
 * also work but Long is leaner; we don't need human-readable rows in the
 * SQLite file).
 */
 class MinstrelTypeConverters {
    @TypeConverter fun instantToLong(i: Instant?): Long? = i?.toEpochMilliseconds()
@@ -4,7 +4,6 @@ import androidx.room.Dao
 import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import com.fabledsword.minstrel.cache.db.CacheSource
 import com.fabledsword.minstrel.cache.db.entities.AudioCacheIndexEntity
 import kotlinx.coroutines.flow.Flow
@@ -32,23 +31,6 @@ interface AudioCacheIndexDao {
    @Query("SELECT trackId FROM audio_cache_index ORDER BY lastPlayedAt DESC NULLS LAST")
    suspend fun trackIdsByRecency(): List<String>
    /** Eviction-candidate ordering — oldest lastPlayedAt first within a source. */
    @Query(
        "SELECT * FROM audio_cache_index " +
            "WHERE source = :source " +
            "ORDER BY lastPlayedAt ASC NULLS FIRST, cachedAt ASC",
    )
    suspend fun evictionCandidates(source: CacheSource): List<AudioCacheIndexEntity>
    /** Sum of bytes across rows; the rolling/liked bucket caps compare against this. */
    @Query("SELECT COALESCE(SUM(sizeBytes), 0) FROM audio_cache_index")
    suspend fun totalBytes(): Long
    @Query(
        "SELECT COALESCE(SUM(sizeBytes), 0) FROM audio_cache_index WHERE source = :source",
    )
    suspend fun bytesBySource(source: CacheSource): Long
    @Insert(onConflict = OnConflictStrategy.REPLACE)
    suspend fun upsert(row: AudioCacheIndexEntity)
@@ -10,12 +10,16 @@ import kotlinx.coroutines.flow.Flow
@Dao
 interface CachedLikeDao {
-    /** All track IDs the user has liked. Audio-cache eviction uses this set. */
+    /**
     * The user's liked track IDs, most recently liked first. The audio
     * cache's Liked budget and the liked-audio downloads read this.
     */
    @Query(
        "SELECT entityId FROM cached_likes " +
-            "WHERE userId = :userId AND entityType = 'track'",
+            "WHERE userId = :userId AND entityType = 'track' " +
            "ORDER BY likedAt DESC",
    )
-    fun observeLikedTrackIds(userId: String): Flow<List<String>>
+    fun observeLikedTrackIdsNewestFirst(userId: String): Flow<List<String>>
    @Query(
        "SELECT entityId FROM cached_likes " +
@@ -44,10 +48,9 @@ interface CachedLikeDao {
    /**
     * Atomically replaces the user's entire cached_likes set with
     * [rows]. Used by [com.fabledsword.minstrel.likes.data.LikesRepository.refreshIds]
-     * so cross-device unlikes (a row that the server no longer
+     * so an unlike made on another device (a row the server no longer
-     * surfaces) get removed from the local cache — drift #570
+     * surfaces) leaves the local cache too; upserts alone would keep a
-     * caught the missing delete pass that left stale Liked tab
+     * stale Liked tab entry forever.
     * entries pointing at tracks the user had unliked elsewhere.
     */
    @Transaction
    suspend fun replaceAllForUser(userId: String, rows: List<CachedLikeEntity>) {
@@ -46,13 +46,13 @@ interface CachedPlaylistTrackDao {
     * Atomic on purpose. Room's InvalidationTracker only notifies observers
     * after the transaction commits, so [observeByPlaylist] never sees the
     * empty gap between the delete and the re-insert. Un-transacted, that
-     * gap is a real observed state — it's what made every Home row visibly
+     * gap is a real observed state: the list visibly collapses to empty
-     * collapse to empty and refill before issue #2327 fixed the equivalent
+     * and refills, which is why `CachedHomeIndexDao` transacts its writes
-     * write in `CachedHomeIndexDao`.
+     * too.
     *
     * Nothing observes [observeByPlaylist] live today, so this is
-     * pre-emptive: it means making playlist detail cache-first later can't
+     * pre-emptive: making playlist detail cache-first later can't
-     * silently reintroduce that flicker.
+     * silently bring that flicker in.
     */
    @Transaction
    suspend fun replacePlaylistTracks(
@@ -41,8 +41,7 @@ interface CachedQuarantineDao {
    /**
     * Atomic full-replace from the server snapshot — one transaction so
     * the `observeAll()` watcher sees a single merged emission, not a
-     * delete-then-insert flicker. Mirrors Flutter's MyQuarantineController
+     * delete-then-insert flicker.
     * `_refreshFromServer` transaction.
     */
    @Transaction
    suspend fun replaceAll(rows: List<CachedQuarantineEntity>) {
@@ -39,7 +39,7 @@ interface CachedTrackDao {
    suspend fun upsertAll(rows: List<CachedTrackEntity>)
    /**
-     * ReplayGain values for [ids] (M464 #5000): the track's own from its row,
+     * ReplayGain values for [ids]: the track's own from its row,
     * the album's from its album row. A track not in the cache has no row.
     */
    @Query(
@@ -7,18 +7,14 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * One row per fully-downloaded audio file. Mirrors
+ * One row per track that has played through the audio cache (see
- * the Flutter client's `AudioCacheIndex` Drift table.
+ * `CacheIndexer`); SimpleCache, not this table, says what is on disk.
 *
- * Drives the 2-bucket LRU eviction (Phase 12 AudioCacheEvictionWorker):
+ * `source` says how the row arrived (see [CacheSource]); eviction does
- *   - `incidental` files (streamed-and-cached side effect) evict first
+ * not read it. `cachedAt` = when the row was written. `lastPlayedAt` =
- *   - `autoPrefetch` second
+ * when the user last played the track, which orders the offline
- *   - `manual` (user explicitly pinned) evict last
+ * "recently played" pool. Nullable on brand-new rows until the first
- *
+ * post-cache play touches them.
 * `cachedAt` = when we downloaded. `lastPlayedAt` = when the user last
 * played it; drives the offline "recently played" ordering and is the
 * tiebreaker for LRU eviction within a source bucket. Nullable on
 * brand-new rows until the first post-cache play touches them.
 */
@Entity(tableName = "audio_cache_index")
 data class AudioCacheIndexEntity(
@@ -39,7 +39,7 @@ data class AuthSessionEntity(
     */
    val cacheSettingsJson: String? = null,
    /**
-     * Per-device opt-out of diagnostics reporting (M9). When the
+     * Per-device opt-out of diagnostics reporting. When the
     * account's debug mode is enabled by an admin, the user can still
     * turn reporting OFF on this device (battery/privacy) — that local
     * choice lives here. Default false = honor the account flag.
@@ -47,12 +47,12 @@ data class AuthSessionEntity(
    val diagnosticsOptOut: Boolean = false,
    /**
     * JSON-encoded NormalizationPrefs (settings/data), the last value seen
-     * from the server or set here (M464 #4998). Null = never fetched; the
+     * from the server or set here. Null = never fetched; the
     * defaults apply. Kept so offline playback still levels.
     */
    val normalizationJson: String? = null,
    /**
-     * "Notifications when the app is closed" (M489 #5347): keep the
+     * "Notifications when the app is closed": keep the
     * delivery foreground service running. A device choice, on by default.
     * The column default matches MIGRATION_11_12's, which Room checks.
     */
@@ -5,10 +5,7 @@ import androidx.room.PrimaryKey
 import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
-/**
+/** Cache row for one album. */
 * Cache row for one album. Mirrors the Flutter client's
 * `CachedAlbums` Drift table.
 */
@Entity(tableName = "cached_albums")
 data class CachedAlbumEntity(
    @PrimaryKey val id: String,
@@ -18,7 +15,7 @@ data class CachedAlbumEntity(
    val releaseDate: String? = null,
    val coverPath: String? = null,
    val mbid: String? = null,
-    // ReplayGain 2.0 album values (M464); null until every track is measured.
+    // ReplayGain 2.0 album values; null until every track is measured.
    val albumGain: Float? = null,
    val albumPeak: Float? = null,
    val fetchedAt: Instant = Clock.System.now(),
@@ -6,13 +6,11 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * Cache row for one artist. Mirrors the Flutter client's
+ * Cache row for one artist.
 * `CachedArtists` Drift table.
 *
- * Column names follow Kotlin idiom (camelCase) rather than Drift's
+ * Column names follow Kotlin idiom (camelCase) — the schema is purely
- * snake_case — the schema is purely internal to the native client; the
+ * internal to the app; the sync controller exchanges snake_case JSON
- * sync controller exchanges snake_case JSON with the server and our
+ * with the server and our mappers translate at the boundary.
 * mappers translate at the boundary.
 */
@Entity(tableName = "cached_artists")
 data class CachedArtistEntity(
@@ -8,8 +8,7 @@ import kotlinx.datetime.Instant
 /**
 * Single-row snapshot of the `/api/me/history` response, stored as the
 * raw wire JSON so the History tab paints instantly from disk on cold
- * open and survives connectivity loss. Mirrors the Flutter Drift
+ * open and survives connectivity loss. One row total; id defaults to 1.
 * `CachedHistorySnapshot` table (id defaults to 1; one row total).
 *
 * Cache-first + SWR: the tab observes this row and a background refresh
 * overwrites it, so the freshest plays land without a blocking spinner.
@@ -5,8 +5,7 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * Per-item row driving the Home screen sections. Mirrors
+ * Per-item row driving the Home screen sections.
 * the Flutter client's `CachedHomeIndex` Drift table.
 *
 * `section` is one of (matching /api/home keys):
 *   - "recently_added_albums"
@@ -5,14 +5,13 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * Like membership row. Mirrors the Flutter client's
+ * Like membership row. Composite primary key — one user may
 * `CachedLikes` Drift table. Composite primary key — one user may
 * independently like a track AND its album AND its artist; rows are
 * disambiguated by the (userId, entityType, entityId) triple.
 *
 * `entityType` is one of "track" | "album" | "artist". Stored as a
- * plain string for parity with the Drift schema and the server's wire
+ * plain string to match the server's wire format; an enum doesn't
- * format; an enum doesn't earn its keep here.
+ * earn its keep here.
 */
@Entity(
    tableName = "cached_likes",
@@ -6,12 +6,11 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * One row per pending offline-write. Mirrors
+ * One row per pending offline write.
 * the Flutter client's `CachedMutations` Drift table.
 *
 * MutationQueue.enqueue() inserts a row when a server-write fails with
 * an IOException; MutationReplayer.drain() pops and re-attempts each
- * row when connectivity returns (Phase 12.2).
+ * row when connectivity returns.
 *
 * `kind` is a stable string registered in `MutationKind` — the replayer
 * looks up the handler in a kind→suspend-function map. Unknown kinds
@@ -5,7 +5,7 @@ import androidx.room.PrimaryKey
 import kotlinx.datetime.Instant
 /**
- * One notice from the user's inbox (M489), kept so the Notifications screen
+ * One notice from the user's inbox, kept so the Notifications screen
 * and the bell's badge work offline, and so a read made offline shows at once.
 * The newest page is cached; older notices are the server's to keep.
 */
@@ -4,7 +4,7 @@ import androidx.room.Entity
 import androidx.room.PrimaryKey
 /**
- * Single-row copy of the user's notification settings (M489), stored as the
+ * Single-row copy of the user's notification settings, stored as the
 * wire JSON, so the settings screen opens offline and a toggle shows at once.
 */
@Entity(tableName = "cached_notification_settings")
@@ -6,8 +6,7 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * Cache row for one playlist (user or system). Mirrors
+ * Cache row for one playlist (user or system).
 * the Flutter client's `CachedPlaylists` Drift table.
 *
 * `systemVariant` is null for user playlists and one of
 * "for_you" / "songs_like_artist" / "discover" / "todays_mix" / etc.
@@ -3,8 +3,7 @@ package com.fabledsword.minstrel.cache.db.entities
 import androidx.room.Entity
 /**
- * Ordered membership of tracks within a playlist. Mirrors
+ * Ordered membership of tracks within a playlist.
 * the Flutter client's `CachedPlaylistTracks` Drift table.
 * Composite PK so the same track can only appear once per playlist;
 * `position` carries the ordering.
 */
@@ -6,9 +6,7 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * The current user's quarantine flag for one track. Mirrors
+ * The current user's quarantine flag for one track.
 * the Flutter client's `CachedQuarantineMine` Drift
 * table.
 *
 * The flat denormalized track/album/artist columns let the Quarantine
 * screen render off this single table without a join — the server
@@ -7,18 +7,15 @@ import kotlinx.datetime.Instant
 /**
 * Single-row snapshot of the last playback session — queue (as JSON),
- * current index, position, and source tag. Mirrors
+ * current index, position, and source tag.
 * the Flutter client's `CachedResumeState` Drift table.
 *
 * Lets a torn-down session (the player's idle/dismissed teardown)
 * resume on next launch; without it the headset / lock-screen play
- * button has nothing to act on. The Flutter codebase persists this on
+ * button has nothing to act on.
 * every queue change and reads on cold start.
 *
 * The `json` field carries the entire ResumeState shape (queue trackrefs,
- * currentIndex, positionMs, sourceTag). Kotlin-side deserialization
+ * currentIndex, positionMs, sourceTag). The ResumeController decodes it,
- * happens in the ResumeController (Phase 6.5) so the schema stays
+ * so the schema stays stable across resume-shape changes.
 * stable across resume-shape changes.
 */
@Entity(tableName = "cached_resume_state")
 data class CachedResumeStateEntity(
@@ -6,10 +6,9 @@ import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 /**
- * Cache row for one track. Mirrors the Flutter client's
+ * Cache row for one track.
 * `CachedTracks` Drift table.
 *
- * [missing] carries the server's missing-file mark (#2704). Every read that
+ * [missing] carries the server's missing-file mark. Every read that
 * can put a track in front of the user — or in a queue — must exclude it, and
 * the DAO queries do that rather than each call site remembering to.
 */
@@ -26,7 +25,7 @@ data class CachedTrackEntity(
    val fileFormat: String? = null,
    val genre: String? = null,
    val missing: Boolean = false,
-    // ReplayGain 2.0 track values (M464), kept so cached audio levels
+    // ReplayGain 2.0 track values, kept so cached audio levels
    // offline. Null until the server has measured the track.
    val trackGain: Float? = null,
    val trackPeak: Float? = null,
@@ -4,14 +4,14 @@ import androidx.room.Entity
 import androidx.room.PrimaryKey
 /**
- * One buffered device-diagnostics event (M9). The DiagnosticsReporter
+ * One buffered device-diagnostics event. The DiagnosticsReporter
 * writes rows here when the account's debug mode is on; the
 * DiagnosticsUploader drains them to POST /api/diagnostics and deletes
 * on success.
 *
 * This is a deliberate ring buffer that is NOT routed through the offline
 * MutationQueue: diagnostics are high-volume, best-effort telemetry, and
- * the bug we're chasing (roaming / dead-zone recovery) happens WHILE
+ * the failures they record (roaming / dead-zone recovery) happen WHILE
 * offline — so events must persist locally through the dead zone and
 * upload on recovery, without clogging the user-data mutation replay.
 *
@@ -7,12 +7,8 @@ import kotlinx.datetime.Instant
 /**
 * Single-row table that tracks where the SyncController left off.
 *
- * Mirrors the Flutter Drift `sync_metadata` table. There is only ever
+ * There is only ever one row at `id = 0`; the SyncController upserts it
- * one row at `id = 0`; the SyncController upserts on every successful
+ * on every successful `/api/library/sync` call.
 * `/api/sync` call.
 *
 * Pulled into Task 4.1 to give Room a compileable @Database (it needs
 * at least one entity); the SyncController itself lands in Phase 12.4.
 */
@Entity(tableName = "sync_metadata")
 data class SyncMetadataEntity(
@@ -33,30 +33,29 @@ object MutationKind {
    // Durable close-by-id for a play whose server row is already open
    // (play_started succeeded). Distinct from PLAY_OFFLINE, which records
-    // a *whole* play when no server row exists. Using close-by-id on
+    // a *whole* play when no server row exists. Recording a whole play on
-    // background avoids the duplicate + orphan row the old offline-on-stop
+    // background would duplicate the open row and leave it orphaned.
    // path produced (see 2026-06-11 contract audit).
    const val PLAY_ENDED: String = "play_ended"
-    // #2374 suggestion snooze. ONE toggle kind rather than separate
+    // Suggestion snooze. ONE toggle kind rather than separate
    // snooze/unsnooze kinds, mirroring LIKE_TOGGLE, so a snooze followed by
    // an undo collapses to the latest intent instead of replaying as two
    // opposed calls whose order decides the outcome.
    const val SUGGESTION_SNOOZE_TOGGLE: String = "suggestion_snooze_toggle"
-    // M464 #4998 loudness-normalization preference. The payload is the whole
+    // Loudness-normalization preference. The payload is the whole
    // preference, a target state like the toggles above, so queued changes
    // collapse to the last one and an older one can never be replayed last.
    const val NORMALIZATION_SET: String = "normalization_set"
-    // M489 notifications inbox. A read is a one-way action (read never goes
+    // Notifications inbox. A read is a one-way action (read never goes
    // back to unread), so neither read kind needs collapsing. Read-all
    // carries the moment the user asked, so a late replay leaves newer
    // notices unread.
    const val NOTIFICATION_READ: String = "notification_read"
    const val NOTIFICATIONS_READ_ALL: String = "notifications_read_all"
-    // M489 per-kind channel setting. One row per (kind, channel) target
+    // Per-kind notification channel. One row per (kind, channel) target
    // state, collapsed on that pair, so the newest choice is the one sent.
    const val NOTIFICATION_SETTING_SET: String = "notification_setting_set"
 }
@@ -92,16 +91,13 @@ data class RequestCreatePayload(
 )
 /**
- * Minimal write-side of the offline mutation queue. Phase 8 v1 only
+ * Write side of the offline mutation queue; [MutationReplayer] drains it.
 * enqueues — the connectivity-aware replayer that drains the queue
 * lands with Phase 12.2's SyncController.
 *
 * Callers (LikesRepository et al.) follow the optimistic-write
 * pattern: mutate Room first so the UI reflects the change
 * immediately, fire the REST call as a best-effort attempt, and on
 * failure enqueue here so the replayer eventually pushes it through.
- * This matches `feedback_offline_first_for_server_writes` — writes
+ * Writes never go fire-and-forget.
 * never go fire-and-forget.
 */
@Suppress("TooManyFunctions") // one enqueue per mutation kind, like the replayer's dispatchers
@Singleton
@@ -262,7 +258,7 @@ class MutationQueue @Inject constructor(
 }
 /**
- * Persisted payload for `MutationKind.SUGGESTION_SNOOZE_TOGGLE` (#2374).
+ * Persisted payload for `MutationKind.SUGGESTION_SNOOZE_TOGGLE`.
 * `desiredSnoozed` is the *target* state, matching [LikeTogglePayload], so
 * the replayer can collapse repeated toggles for one candidate down to the
 * last intent. Both directions are idempotent server-side: re-snoozing
@@ -285,10 +281,10 @@ data class SuggestionSnoozeTogglePayload(
 data class QuarantineUnflagPayload(val trackId: String)
 /**
- * Persisted payload for `MutationKind.PLAYLIST_APPEND`. Mirrors the
+ * Persisted payload for `MutationKind.PLAYLIST_APPEND`: the track IDs to
- * Flutter wire shape: list of track IDs to append to a specific
+ * append to one playlist. The server is idempotent at the
- * playlist. Server is idempotent at the (playlist_id, track_id) pair
+ * (playlist_id, track_id) pair level — re-firing the same payload yields
- * level — re-firing the same payload yields no duplicates.
+ * no duplicates.
 */
@Serializable
 data class PlaylistAppendPayload(
@@ -314,7 +310,7 @@ data class QuarantineFlagPayload(
 * re-fires `POST /api/events` with type=play_offline; the server
 * records start+end from `atIso` (the original play-start time)
 * + `durationPlayedMs`, applies the canonical skip rule, and
- * advances #415 rotation when source is a system playlist.
+ * advances rotation when source is a system playlist.
 */
@Serializable
 data class PlayOfflinePayload(
@@ -323,7 +319,7 @@ data class PlayOfflinePayload(
    val atIso: String,
    val durationPlayedMs: Long,
    val source: String? = null,
-    // #1551: device class for context conditioning; null on payloads queued
+    // Device class for context conditioning; null on payloads queued
    // before this field existed (decodes to null → server stores NULL).
    val deviceClass: String? = null,
 )
@@ -367,12 +363,12 @@ data class PlaybackErrorReportPayload(
    val clientId: String,
 )
-/** Persisted payload for `MutationKind.NOTIFICATION_READ` (M489). */
+/** Persisted payload for `MutationKind.NOTIFICATION_READ`. */
@Serializable
 data class NotificationReadPayload(val id: String)
 /**
- * Persisted payload for `MutationKind.NOTIFICATIONS_READ_ALL` (M489).
+ * Persisted payload for `MutationKind.NOTIFICATIONS_READ_ALL`.
 * `upToIso` is the newest notice the user could see when they asked; null
 * when the inbox was empty on the device, which marks everything.
 */
@@ -380,7 +376,7 @@ data class NotificationReadPayload(val id: String)
 data class NotificationsReadAllPayload(val upToIso: String?)
 /**
- * Persisted payload for `MutationKind.NOTIFICATION_SETTING_SET` (M489): one
+ * Persisted payload for `MutationKind.NOTIFICATION_SETTING_SET`: one
 * kind's one channel, as a target state. `channel` is "inbox" | "phone" |
 * "email". No defaults, so every field is always written.
 */
@@ -160,7 +160,7 @@ class MutationReplayer @Inject constructor(
    /**
     * Returns the outcome of replaying one row. SENT on a 2xx; DROP for an
     * unknown kind/variant. Network / HTTP failures THROW and are classified
-     * by [outcomeFor] — dispatchers no longer swallow.
+     * by [outcomeFor] — dispatchers never swallow them.
     */
    private suspend fun dispatch(row: CachedMutationEntity): Outcome = when (row.kind) {
        MutationKind.LIKE_TOGGLE -> dispatchLikeToggle(row.payload)
@@ -182,7 +182,7 @@ class MutationReplayer @Inject constructor(
        else -> Outcome.DROP
    }
-    /** The notifications inbox's kinds (M489), split out to keep [dispatch] simple. */
+    /** The notifications inbox's kinds, split out to keep [dispatch] simple. */
    private suspend fun dispatchNotification(row: CachedMutationEntity): Outcome = when (row.kind) {
        MutationKind.NOTIFICATION_READ -> dispatchNotificationRead(row.payload)
        MutationKind.NOTIFICATIONS_READ_ALL -> dispatchNotificationsReadAll(row.payload)
@@ -354,8 +354,8 @@ class MutationReplayer @Inject constructor(
 /**
 * Row ids of desired-state toggles superseded by a later toggle for the same
 * entity. Applies to every kind whose payload encodes a TARGET state rather
- * than an action — like-toggles, suggestion snoozes (#2374) and the
+ * than an action — like-toggles, suggestion snoozes and the
- * normalization preference (#4998) — because
+ * normalization preference — because
 * replaying a stale one last would invert the final state.
 *
 * Top-level and pure so it can be unit-tested without standing up a Retrofit
@@ -34,9 +34,8 @@ import javax.inject.Inject
 import javax.inject.Singleton
 /**
- * Drives the delta sync against `/api/library/sync` (#357). Mirrors
+ * Drives the delta sync against `/api/library/sync`, scoped to the
- * the Flutter `SyncController`, scoped to the entity types the
+ * entity types the app caches (artist/album/track). Likes and
 * native client cares about (artist/album/track). Likes and
 * playlists get their own dedicated refresh paths so the sync
 * controller doesn't need to track them.
 *
@@ -46,10 +45,9 @@ import javax.inject.Singleton
 * with a persisted cookie). Re-running on every cookie change is
 * what makes the Library tabs populate within seconds of sign-in.
 *
- * Wipes-on-410: when the server's compaction window has passed the
+ * Restart-on-410: when the server's compaction window has passed the
- * stored cursor, the response is 410 Gone. The controller drops the
+ * stored cursor, the response is 410 Gone. The controller resets the
- * three local caches and recurses with cursor=0 — same wipe behavior
+ * cursor to 0 and pulls the full entity set again (see [resetCursor]).
 * as the Flutter port.
 */
@Singleton
 class SyncController @Inject constructor(
@@ -109,19 +107,36 @@ class SyncController @Inject constructor(
        }
    }
    /**
     * Pulls pages until the server has nothing newer. The server returns
     * at most 1000 changes a call, and a full library re-read adds tens
     * of thousands, so one page per trigger would leave the cache behind:
     * merge deletes would never arrive and the freshness sweep would keep
     * asking for tracks that are gone. The cursor is stored after each
     * page, so an interrupted pass resumes where it stopped.
     */
    private suspend fun sync() {
        repeat(MAX_PAGES_PER_PASS) {
            if (!syncPage()) return
        }
    }
    /** One page of the change log. True when the server may hold more. */
    private suspend fun syncPage(): Boolean {
        val meta = syncMetadataDao.get()
        val cursor = meta?.cursor ?: 0L
        val response = api.sync(cursor)
-        when (response.code()) {
+        return when (response.code()) {
            HTTP_NO_CONTENT -> {
                touchLastSyncAt(cursor)
                false
            }
            HTTP_GONE -> {
-                wipeAndRetry()
+                resetCursor()
                true
            }
            HTTP_OK -> {
-                val body = response.body() ?: return
+                val body = response.body() ?: return false
                applyDeltas(body.upserts.artist, body.upserts.album, body.upserts.track)
                applyDeletes(body.deletes.artist, body.deletes.album, body.deletes.track)
                syncMetadataDao.upsert(
@@ -131,10 +146,14 @@ class SyncController @Inject constructor(
                        lastSyncAt = Clock.System.now(),
                    ),
                )
                // A cursor that did not advance would ask for the same page
                // again; stop rather than spin.
                body.cursor > cursor
            }
            else -> {
-                // Unhandled status — treat as a no-op for v1; the next
+                // Unhandled status — treat as a no-op; the next
                // app start retries from the same cursor.
                false
            }
        }
    }
@@ -165,25 +184,27 @@ class SyncController @Inject constructor(
        )
    }
-    private suspend fun wipeAndRetry() {
+    private suspend fun resetCursor() {
        // The Library DAOs only expose deleteByIds; for the rare 410
-        // path we re-issue the same request with cursor=0 after
+        // path the next page is requested with cursor=0 after
-        // resetting our cursor. The next response carries the full
+        // resetting our cursor. The following pages carry the full
        // entity set, which upsertAll overwrites the existing rows
        // with — old rows for entities the server no longer knows
-        // about will linger until a later 410 or until the user clears
+        // about linger until MetadataProvider's refresh meets their
-        // app data. Acceptable for v1; a future "wipe all" DAO method
+        // 404 and drops them.
        // tightens this up.
        syncMetadataDao.upsert(
            SyncMetadataEntity(id = 0, cursor = 0, lastSyncAt = null),
        )
        sync()
    }
    private companion object {
        const val HTTP_OK = 200
        const val HTTP_NO_CONTENT = 204
        const val HTTP_GONE = 410
        // A guard, not a budget: 1000 pages is a million changes, far past
        // anything a library writes between two app starts.
        const val MAX_PAGES_PER_PASS = 1000
    }
 }
@@ -74,6 +74,35 @@ class ConnectivityObserver @Inject constructor(
        awaitClose { cm.unregisterNetworkCallback(callback) }
    }.distinctUntilChanged()
    /**
     * Whether the network the device is using now is unmetered: Wi-Fi or
     * Ethernet, but not mobile data or a hotspot Android marks metered.
     * Downloads the user did not start (the liked-song downloads) wait for
     * this.
     */
    val unmetered: Flow<Boolean> = callbackFlow {
        val callback = object : ConnectivityManager.NetworkCallback() {
            override fun onCapabilitiesChanged(
                network: Network,
                capabilities: NetworkCapabilities,
            ) {
                trySend(capabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED))
            }
            override fun onLost(network: Network) {
                trySend(false)
            }
        }
        cm.registerDefaultNetworkCallback(callback)
        trySend(isActiveNetworkUnmetered())
        awaitClose { cm.unregisterNetworkCallback(callback) }
    }.distinctUntilChanged()
    private fun isActiveNetworkUnmetered(): Boolean {
        val caps = cm.activeNetwork?.let { cm.getNetworkCapabilities(it) }
        return caps != null &&
            caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_NOT_METERED)
    }
    private fun hasActiveNetwork(): Boolean {
        val caps = cm.activeNetwork?.let { cm.getNetworkCapabilities(it) }
        return caps != null &&
@@ -29,27 +29,25 @@ private const val POLL_DEGRADED_MS = 20_000L
 private const val ARBITRATE_MIN_GAP_MS = 2_000L
 /**
- * THE single authority on network/server reachability. Absorbs the former
+ * THE single authority on network/server reachability: the /healthz poll,
- * VersionCheckController (the /healthz poll + version parsing) and
+ * version parsing and the tri-state health derive live in one
- * ServerHealthController (the tri-state derive) into one signal-driven unit so
+ * signal-driven unit, so the app has one place that answers "can we reach
- * the app has one place that answers "can we reach Minstrel?" — not three
+ * Minstrel?".
 * half-systems reporting differently.
 *
 * Inputs (all funnel through a single-consumer intent channel for thread
 * safety — [reportSuccess]/[reportFailure] are called from the audio read path
 * and OkHttp threads):
 *  - device link transitions ([ConnectivityObserver]); link-return triggers an
- *    immediate probe so recovery is near-instant (fixes the sticky banner).
+ *    immediate probe so recovery is near-instant.
 *  - periodic /healthz probe, adaptive cadence (calm when Healthy, fast when down).
 *  - reportSuccess / reportFailure from the API interceptor, the audio data
 *    source, and the playback-error reporter.
 *  - recheck() from pull-to-refresh and the banner.
- *  - a forced probe when the app returns to the foreground (#1209). Without
+ *  - a forced probe when the app returns to the foreground. The poll
- *    it a stale ServerDown outlived the condition that caused it: the poll
+ *    loop's delay() is throttled while screen-off/doze, so without it a
- *    loop's delay() is throttled while screen-off/doze, so recovery waited on
+ *    stale ServerDown would outlive its cause until the OS next let the
- *    whenever the OS next let the loop run. Meanwhile ServerDown makes
+ *    loop run — and ServerDown makes OfflineGatedDataSource refuse every
- *    OfflineGatedDataSource refuse every uncached track, so the app declined
+ *    uncached track, declining music that would play fine.
 *    to play music that would have played fine.
 *
 * Version compatibility is a byproduct of the same /healthz response.
 *
@@ -112,7 +110,7 @@ class NetworkStatusController @Inject constructor(
    /**
     * App returned to the foreground — probe now rather than waiting for the
-     * poll loop (#1209).
+     * poll loop.
     *
     * The link-return probe in `init` does NOT cover this: it fires on a
     * connectivity *change*, and an app backgrounded on stable Wi-Fi sees none.
@@ -172,7 +170,7 @@ class NetworkStatusController @Inject constructor(
    private suspend fun probeOnce(force: Boolean = false) {
        // Startup guard: don't poll the localhost placeholder before AuthStore
-        // hydrates the real base URL — that false failure used to flash the banner.
+        // hydrates the real base URL — that false failure would flash the banner.
        if (authStore.baseUrl.value == AuthStore.DEFAULT_BASE_URL) return
        val now = System.currentTimeMillis()
        if (!force && now - lastProbeAtMs.get() < ARBITRATE_MIN_GAP_MS) return
@@ -5,15 +5,14 @@ internal const val CORROBORATION_WINDOW_MS = 30_000L
 internal const val CORROBORATION_OP_THRESHOLD = 2
 /**
- * Minimum gap between op failures for them to count as SEPARATE evidence
+ * Minimum gap between op failures for them to count as SEPARATE evidence.
 * (#1209).
 *
 * A link handoff fails every in-flight request at once, so a burst is one
 * event producing N failures — not N independent observations that the server
- * is gone. Without this, two simultaneous failures corroborated each other
+ * is gone. Counted separately, two simultaneous failures would corroborate
- * straight to Unreachable, and ServerDown makes OfflineGatedDataSource refuse
+ * each other straight to Unreachable, and ServerDown makes
- * every uncached track. The app declined to play music that would have played
+ * OfflineGatedDataSource refuse every uncached track: the app would decline
- * fine, for a blip that had already resolved.
+ * music that plays fine, for a blip that had already resolved.
 *
 * 3s is comfortably above the sub-second window an OS handoff occupies while
 * still letting a genuine outage corroborate within seconds once a client
@@ -38,7 +38,7 @@ import javax.inject.Inject
 import javax.inject.Singleton
 /**
- * On-device diagnostics collector (M9). Active only while the account's
+ * On-device diagnostics collector. Active only while the account's
 * debug mode is enabled (server flag, read via AuthController.currentUser)
 * AND the user hasn't opted out locally. When active it taps existing
 * connectivity / player / UPnP / power seams READ-ONLY and writes a
@@ -196,13 +196,11 @@ class DiagnosticsReporter @Inject constructor(
    /**
     * Catch the renderer rapidly leaving and re-entering PLAYING.
     *
-     * The operator reports the Sonos "play pause play pause, like someone
+     * The symptom: a Sonos rapidly play-pause-play-pausing, about every half
-     * pressing it every half second", usually as a track starts, cleared by a
+     * second, usually as a track starts, cleared by a manual pause or skip.
-     * manual pause or skip. Nothing here could see that: `player_state`
+     * No other collector sees it: `player_state` carries
-     * carries source/loading/error but not playing, `track_change` needs the
+     * source/loading/error but not playing, `track_change` needs the index
-     * index to move, and the heartbeat samples once per 45s. The symptom fell
+     * to move, and the heartbeat samples once per 45s.
     * through every existing collector, which is why it has only ever been
     * described and never measured.
     *
     * Records every raw transport change (cheap — steady playback produces
     * a couple per track) and, when they come in a burst, one summary event
@@ -27,7 +27,7 @@ import javax.inject.Singleton
 /**
 * Drains the [DiagnosticEventDao] ring buffer to POST /api/diagnostics
- * (M9). Triggers mirror [com.fabledsword.minstrel.cache.mutations.MutationReplayer]:
+ *. Triggers mirror [com.fabledsword.minstrel.cache.mutations.MutationReplayer]:
 * a periodic tick, a sign-in (sessionCookie non-null), and a server-health
 * recovery to [ServerHealth.Healthy] — so a dead-zone's buffered events
 * upload the moment the link comes back.
@@ -70,6 +70,9 @@ class DiagnosticsUploader @Inject constructor(
    /** Coalesces concurrent triggers via tryLock — a drain in flight wins. */
    private suspend fun drainSafe() {
        // A trigger at launch can fire before the stored login has loaded;
        // wait for it, so a signed-in user is not read as signed out.
        authStore.awaitSessionHydrated()
        val clientId = authStore.clientId.value
        // Signed out / no client id yet → nothing to do. Single guard keeps
        // the return count within the detekt gate.
@@ -6,10 +6,9 @@ import com.fabledsword.minstrel.player.TransportObservation
 * Decides when a run of renderer transport changes is a *flap* — the renderer
 * repeatedly failing to settle — rather than an ordinary track transition.
 *
- * The operator reports the Sonos "play pause play pause, like someone pressing
+ * The symptom: a Sonos rapidly play-pause-play-pausing, about every half
- * it every half second", usually as a track starts. No diagnostic event could
+ * second, usually as a track starts. No other diagnostic event records it;
- * see it, so it has been described several times and measured never. This is
+ * this is the rule that decides when an episode is worth writing down.
 * the rule that decides when an episode is worth writing down.
 *
 * Pure decision state, like [com.fabledsword.minstrel.player.RemoteStallWatchdog]:
 * the caller owns the flow and the recording, this only answers "is this an
@@ -29,16 +29,11 @@ enum class RequestOutcome { ACCEPTED, QUEUED }
 /**
 * Read-through Discover surface: catalogue search, suggestion feed, and
- * the request-creation write path. Mirrors the Flutter
+ * the request-creation write path. Writes never go fire-and-forget, so
- * `DiscoverApi` + `mutationQueueProvider` integration —
+ * `createRequest` falls back to the MutationQueue on transport failure.
 * `feedback_offline_first_for_server_writes` says writes never go
 * fire-and-forget, so `createRequest` falls back to the
 * MutationQueue on transport failure.
 *
- * Reads are not cached locally yet — discovery results are inherently
+ * Reads are not cached locally — discovery results are inherently
- * transient (60s server-side LRU); the cache wins are minor and
+ * transient (60s server-side LRU), so a local cache would win little.
 * unblock no UX. Phase 13's offline pass adds an offline scrollback
 * for the suggestion feed only.
 */
@Singleton
 class DiscoverRepository @Inject constructor(
@@ -54,7 +49,7 @@ class DiscoverRepository @Inject constructor(
        api.listSnoozes().map { it.toDomain() }
    /**
-     * Parks a suggestion ("not right now"). Offline-first per rule #100: on
+     * Parks a suggestion ("not right now"). Offline-first: on
     * transport failure the target state is queued for the replayer rather
     * than dropped.
     *
@@ -195,8 +195,8 @@ private fun KindChips(kind: RequestKind, onChange: (RequestKind) -> Unit) {
 /**
 * The snooze surface's data and callbacks, bundled rather than threaded
- * through as four more parameters — the pane grew from one action to three
+ * through as separate parameters: the pane carries three actions, and the
- * with slice 4 and the signatures stopped being readable.
+ * signatures stop being readable otherwise.
 */
 private data class SnoozeUi(
    val locallySnoozedMbids: Set<String>,
@@ -240,9 +240,9 @@ private fun SuggestionsList(
    ) {
        item { SuggestionsHeader() }
        if (items.isEmpty()) {
-            // An empty deck used to mean one thing — no listening signal yet.
+            // An empty deck means one of two things — no listening signal yet,
-            // With snoozing it can also mean "you parked them all", and telling
+            // or "you parked them all" — and telling the second user to go
-            // that user to go listen to something would be wrong advice.
+            // listen to something would be wrong advice.
            item {
                CenteredMessage(
                    if (snoozeUi.snoozes.isEmpty()) {
@@ -79,8 +79,8 @@ internal fun SuggestionTile(
            IconButton(onClick = onSnooze) {
                Icon(
                    imageVector = Lucide.Clock,
-                    // Rule #101: the label states what happens, and passes no
+                    // The label states what happens and passes no judgement on the
-                    // judgement on the music. Never "not for me".
+                    // music: never "not for me".
                    contentDescription = "Not right now — hide ${s.name} for a while",
                    tint = MaterialTheme.colorScheme.onSurfaceVariant,
                )
@@ -173,7 +173,7 @@ private fun Avatar(imageUrl: String, fallback: ImageVector, circular: Boolean) {
            .background(MaterialTheme.colorScheme.surfaceVariant),
        contentAlignment = Alignment.Center,
    ) {
-        // The server hands back its own art endpoint (relative, M502 #5519),
+        // The server hands back its own art endpoint (relative),
        // which answers 404 when no source has an image: ServerImage resolves
        // the path and shows the icon while loading and on a miss.
        ServerImage(
@@ -68,7 +68,7 @@ class DiscoverViewModel @Inject constructor(
    init {
        loadSuggestions()
-        // Screen-level auto-recovery (issue #1245): re-run whichever pane
+        // Screen-level auto-recovery: re-run whichever pane
        // failed while the server was unreachable once health returns.
        viewModelScope.launch {
            networkStatus.recoveries().collect {
@@ -54,7 +54,7 @@ private const val EVENTS_BUFFER_CAPACITY = 64
 *   retry. Without this a single blip silently kills cross-device
 *   reactivity until the next app launch.
 * - [connected] says whether a stream is open. Background delivery
- *   (M489 #5347) catches up on every rising edge: nothing replays a
+ *   catches up on every rising edge: nothing replays a
 *   frame sent while the stream was down.
 *
 * The URL passes through the placeholder host that
@@ -4,8 +4,7 @@ import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.JsonObject
 /**
- * Parsed event from the server's SSE stream. Mirrors
+ * Parsed event from the server's SSE stream.
 * the Flutter client's `LiveEvent`.
 *
 * - [kind] is the SSE `event:` field (e.g. "track.liked", "playlist.deleted").
 * - [userId] is the actor whose user-scoped state changed (empty for
@@ -51,7 +51,7 @@ class LiveEventsDispatcher @Inject constructor(
            "artist.liked",
            "artist.unliked",
            -> refreshLikes()
-            // M489: a contentless nudge; the inbox refetches its newest page.
+            // a contentless nudge; the inbox refetches its newest page.
            "notification.created" -> refreshNotifications()
        }
        // Other kinds (playlist.*, quarantine.*, request.status_changed,
@@ -3,14 +3,14 @@ package com.fabledsword.minstrel.events
 import kotlin.random.Random
 /**
- * How long [EventsStream] waits before reconnecting (M489 #5347).
+ * How long [EventsStream] waits before reconnecting.
 *
 * The stream is wanted around the clock once notifications arrive with the app
 * closed, so a server that is down overnight must not cost a radio wakeup
- * every few seconds: Roundtable's flat 2s came to about 43,000 of them. The
+ * every few seconds: a flat 2s retry is 1,800 wakeups an hour. The wait
- * wait doubles from [BASE_MS] to [MAX_MS]. The jitter spreads the moment every
+ * doubles from [BASE_MS] to [MAX_MS]. The jitter spreads the moment every
- * phone on the server reconnects, which is when the server has just come back
+ * phone on the server reconnects, which is when the server has just come
- * and can least take a spike.
+ * back and can least take a spike.
 *
 * A network coming up (a hint, never a gate) or the app coming to the
 * foreground reconnects at once and starts the ladder over.
@@ -33,9 +33,7 @@ data class HistoryPage(
 )
 /**
- * Cache-first listening history. Mirrors Flutter's `_historyProvider`
+ * Cache-first listening history, in the Room + Flow idiom:
 * (`cacheFirst` over the `cached_history_snapshot` drift row with
 * `alwaysRefresh`) using the native Room + Flow idiom:
 *
 *   - [observeHistory] emits the cached snapshot instantly (null until
 *     the first fetch lands), so the History tab paints from disk on
@@ -47,8 +45,8 @@ data class HistoryPage(
 *
 * The whole page is stored as one JSON blob (single-row table) rather
 * than per-row Room entities — history is a read-only timestamp-keyed
- * snapshot, so a blob is the simplest faithful mirror of the Drift
+ * snapshot, so a blob is the simplest faithful copy and avoids
- * snapshot and avoids ordering/paging bookkeeping for no UX gain.
+ * ordering/paging bookkeeping for no UX gain.
 */
@Singleton
 class HistoryRepository @Inject constructor(
@@ -86,7 +86,7 @@ class HistoryTabViewModel @Inject constructor(
    init {
        refresh()
-        // Screen-level auto-recovery (issue #1245): re-pull when server
+        // Screen-level auto-recovery: re-pull when server
        // health returns, so a load that failed offline heals unprompted.
        viewModelScope.launch {
            networkStatus.recoveries().collect { refresh() }
@@ -99,7 +99,7 @@ class HistoryTabViewModel @Inject constructor(
            .onFailure { refreshError.value = ErrorCopy.fromThrowable(it) }
    }
-    /** Single-track play, matching the Flutter history-row behavior. */
+    /** Plays the tapped track on its own. */
    fun playTrack(track: TrackRef) {
        if (track.streamUrl.isEmpty()) return
        player.setQueue(listOf(track), initialIndex = 0, source = "history")
@@ -33,8 +33,7 @@ import javax.inject.Singleton
 * [MetadataProvider] Flow that emits the cached row (or null while it
 * hydrates) and fires a dedup'd, concurrency-gated on-miss fetch. A
 * null [HomeTile.value] renders as a skeleton in position; the tile
- * reveals when the fetch lands and Room re-emits. Mirrors Flutter's
+ * reveals when the fetch lands and Room re-emits.
 * per-item tile providers.
 *
 * `refreshIndex()` pulls `GET /api/home/index`, swaps all sections in
 * one transaction (so the rows update together in a single emission
@@ -99,8 +98,8 @@ class HomeRepository @Inject constructor(
     * One transaction for all seven sections is deliberate: Room notifies
     * observers once, on commit, so Home swaps from the old content to
     * the new in a single emission. Per-section, un-transacted writes
-     * made every row visibly collapse to empty and refill, one after
+     * would make every row visibly collapse to empty and refill, one
-     * another (issue #2327).
+     * after another.
     */
    suspend fun refreshIndex() {
        val wire = api.getHomeIndex()
@@ -141,7 +140,7 @@ class HomeRepository @Inject constructor(
     * the id list instead means a section whose contents didn't actually
     * move never restarts the `flatMapLatest` below, which would
     * otherwise tear down and rebuild all of its tiles' hydration flows
-     * and flicker unchanged tiles (issue #2327).
+     * and flicker unchanged tiles.
     */
    private fun observeSectionIds(section: String): Flow<List<String>> =
        homeIndexDao.observeBySection(section)
@@ -102,6 +102,8 @@ import com.fabledsword.minstrel.shared.widgets.PullToRefreshScaffold
 import com.fabledsword.minstrel.shared.widgets.SkeletonAlbumTile
 import com.fabledsword.minstrel.shared.widgets.SkeletonArtistTile
 import com.fabledsword.minstrel.shared.widgets.SkeletonSectionHeader
 import com.fabledsword.minstrel.update.ui.UpdateNotices
 import com.fabledsword.minstrel.update.ui.UpdateViewModel
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.async
 import kotlinx.coroutines.channels.Channel
@@ -133,7 +135,7 @@ private const val RECENTLY_ADDED_GRID_HEIGHT_DP = 440
 // "Updating your mixes…" veil. UpdateVeilController decides both whether it
 // appears at all — only when a refresh actually changes something — and how
 // long it stays, by watching the screen settle rather than by a fixed delay,
-// which lowered it while tiles and artwork were still landing (#2327).
+// which would lower it while tiles and artwork are still landing.
 // Near-opaque (VEIL_ALPHA) so the section churn never bleeds through.
 private const val VEIL_WIPE_MS = 280
 private const val VEIL_ALPHA = 0.96f
@@ -244,9 +246,8 @@ class HomeViewModel @Inject constructor(
    /**
     * Tap on a Most-played tile: replace the queue with the section's
-     * tracks and start at the tapped index. Mirrors Flutter's
+     * tracks and start at the tapped index. Home's section is itself the
-     * `_resolveSectionTracks` — Home's section is itself the playable
+     * playable unit, not a list of album-detail links.
     * unit, not a list of album-detail links.
     */
    fun playMostPlayed(tracks: List<com.fabledsword.minstrel.models.TrackRef>, startIndex: Int) {
        if (tracks.isEmpty()) return
@@ -259,13 +260,11 @@ class HomeViewModel @Inject constructor(
    /**
     * Tap the album play-button overlay: fetch the album detail and
-     * play its tracks from the first. Mirrors Flutter's AlbumCard
+     * play its tracks from the first. Suspending so the button's spinner
-     * `_playAlbum`. Suspending so the button's spinner waits for the
+     * waits for the fetch + queue setup; the inner work is launched in
-     * fetch + queue setup; the inner work is launched in viewModelScope
+     * viewModelScope so cancellation from leaving the screen mid-fetch
-     * so cancellation from leaving the screen mid-fetch doesn't kill
+     * doesn't kill playback. Errors surface via the snackbar channel,
-     * playback. Errors surface via the snackbar channel (Android
+     * like the ArtistDetail play handler.
     * improvement over Flutter's silent-fail; matches the existing
     * ArtistDetail play handler).
     */
    suspend fun playAlbum(albumId: String) {
        viewModelScope.launch {
@@ -288,9 +287,8 @@ class HomeViewModel @Inject constructor(
    /**
     * Tap the artist play-button overlay: fetch every track across the
-     * artist's albums, Fisher-Yates shuffle, play from index 0. Mirrors
+     * artist's albums, Fisher-Yates shuffle, play from index 0. Empty +
-     * Flutter's ArtistCard `_playArtistShuffle`. Empty + error semantics
+     * error semantics follow [playAlbum].
     * follow [playAlbum].
     */
    suspend fun playArtistShuffled(artistId: String) {
        viewModelScope.launch {
@@ -315,9 +313,8 @@ class HomeViewModel @Inject constructor(
     * Tap the playlist play-button overlay: fetch the playlist's tracks
     * (rotation-aware shuffle for refreshable system playlists, stored
     * order for everything else), 8s timeout, play from index 0.
-     * Mirrors Flutter PlaylistCard `_playPlaylist`. Empty-mix and
+     * Empty-mix and timeout get their own copy strings; other errors
-     * timeout get their own copy strings; other errors fall through to
+     * fall through to [ErrorCopy.fromThrowable].
     * [ErrorCopy.fromThrowable].
     */
    suspend fun playPlaylist(playlist: PlaylistRef) {
        viewModelScope.launch {
@@ -366,9 +363,9 @@ class HomeViewModel @Inject constructor(
    fun retry() = veil.request(userInitiated = true)
    /**
-     * Manual pull-to-refresh. Goes behind the veil like every other refresh
+     * Manual pull-to-refresh. Goes behind the veil like every other
-     * (operator call, 2026-07-31: the churn a pull causes is identical to
+     * refresh: a pull churns the screen exactly as the automatic paths
-     * the automatic paths, and a small spinner didn't hide it).
+     * do, and a small spinner does not hide it.
     *
     * Suspends until the veil has taken over OR the session has finished,
     * so the pull indicator hands off to exactly one successor: the veil if
@@ -488,7 +485,7 @@ class HomeViewModel @Inject constructor(
     * Only user-initiated sessions say anything. The same outcome from a
     * background check — the initial load, the 03:00 rebuild, a reconnect —
     * is noise, and "Already up to date" on every launch would be worse
-     * than silence (operator's call, 2026-07-31).
+     * than silence.
     */
    private fun reportRefreshOutcome(result: VeilSessionResult) {
        if (!result.userInitiated) return
@@ -505,7 +502,7 @@ class HomeViewModel @Inject constructor(
     *
     * Raised only when a refresh actually changes what's on screen, and then
     * held until Home settles — tiles hydrated, artwork loaded — instead of
-     * for a fixed delay after the network pull returns (issue #2327). A
+     * for a fixed delay after the network pull returns. A
     * refresh that returns what's already cached shows no veil at all;
     * [reportRefreshOutcome] tells the user instead, if they asked.
     */
@@ -515,9 +512,9 @@ class HomeViewModel @Inject constructor(
        // Every refresh path goes through the controller, which decides
        // per session whether to raise the veil. That includes the initial
        // load: over a warm cache it's a full re-pull that churns every
-        // section, and it used to run completely unveiled.
+        // section.
        veil.request()
-        // Screen-level auto-recovery (issue #1245): a Home that failed to
+        // Screen-level auto-recovery: a Home that failed to
        // load while the server was unreachable re-pulls itself the moment
        // health returns — same idiom as SyncController, one layer up.
        // This is also the recovery that keeps trying after the veil has
@@ -525,9 +522,8 @@ class HomeViewModel @Inject constructor(
        viewModelScope.launch {
            networkStatus.recoveries().collect { veil.request() }
        }
-        // Server-side changes that rewrite what Home renders (#968 and
+        // Server-side changes that rewrite what Home renders re-pull
-        // the 2026-07-31 widening) re-pull behind the veil. Mirrors the
+        // behind the veil, as the web SSE consumer does.
        // web SSE consumer.
        viewModelScope.launch {
            eventsStream.events
                .filter { it.kind in VEILED_EVENT_KINDS }
@@ -559,6 +555,7 @@ class HomeViewModel @Inject constructor(
 fun HomeScreen(
    navController: NavHostController,
    viewModel: HomeViewModel = hiltViewModel(),
    updates: UpdateViewModel = hiltViewModel(),
 ) {
    val snackbarHostState = remember { SnackbarHostState() }
    LaunchedEffect(Unit) {
@@ -581,7 +578,11 @@ fun HomeScreen(
        val offline by viewModel.offline.collectAsStateWithLifecycle()
        val updating by viewModel.isUpdating.collectAsStateWithLifecycle()
        PullToRefreshScaffold(
-            onRefresh = { viewModel.refreshFromPull() },
+            onRefresh = {
                // A pull asks about a newer app too, so one shows up at once.
                updates.check()
                viewModel.refreshFromPull()
            },
            modifier = Modifier.fillMaxSize().padding(inner),
        ) {
            Box(Modifier.fillMaxSize()) {
@@ -596,6 +597,7 @@ fun HomeScreen(
                // hide behind an "Updating your mixes…" wipe that stays up
                // until the screen has actually stopped moving.
                UpdatingVeil(visible = updating)
                UpdateNotices(updates)
            }
        }
    }
@@ -758,8 +760,7 @@ private fun HomeSuccessContent(
            // Always rendered: real system/user playlists, with
            // placeholder cards filling the For You / Discover slots
            // that haven't generated yet. When offline, the cache-backed
-            // pool cards lead the row. Songs-like now lives in its own
+            // pool cards lead the row. Songs-like has its own row below.
            // dedicated row below (#1491), no longer inside this carousel.
            PlaylistsRow(
                title = "Playlists",
                rowItems = buildPlaylistsRow(sections.playlists, systemStatus, offline),
@@ -769,10 +770,9 @@ private fun HomeSuccessContent(
                onPlayPlaylist = onPlayPlaylist,
            )
        }
-        // Songs-like is the best-performing surface (#1491) — promoted out
+        // Songs-like gets its own row so it can show a wider spread of
-        // of the Playlists carousel into its own row so it shows a wider
+        // "Songs like {artist}" mixes than a carousel slot allows. Hidden
-        // spread of "Songs like {artist}" mixes. Hidden when there's
+        // when there's nothing to show (offline with none cached).
        // nothing to show (offline with none cached).
        songsLikeSection(
            playlists = sections.playlists,
            status = systemStatus,
@@ -781,6 +781,13 @@ private fun HomeSuccessContent(
            onPlayPool = onPlayPool,
            onPlayPlaylist = onPlayPlaylist,
        )
        genreMixSection(
            playlists = sections.playlists,
            offline = offline,
            onPlaylistClick = onPlaylistClick,
            onPlayPool = onPlayPool,
            onPlayPlaylist = onPlayPlaylist,
        )
        youMightLikeSection(
            albums = sections.youMightLikeAlbums,
            artists = sections.youMightLikeArtists,
@@ -805,11 +812,11 @@ private fun HomeSuccessContent(
 }
 /**
- * The dedicated "Songs like…" row (#1491). Reuses [PlaylistsRow]'s card
+ * The dedicated "Songs like…" row. Reuses [PlaylistsRow]'s card
 * rendering with a distinct title; hidden entirely when there's nothing
 * to show (offline with no cached mixes). Online with none generated yet
 * still shows a few placeholders so the building / seed-needed state is
- * visible, matching the pre-promotion carousel behavior.
+ * visible.
 */
 private fun LazyListScope.songsLikeSection(
    playlists: List<PlaylistRef>,
@@ -833,6 +840,31 @@ private fun LazyListScope.songsLikeSection(
    }
 }
 /**
 * The "Your genres" row: one mix per genre the user listens to. Hidden
 * when there is nothing to show, built or cached.
 */
 private fun LazyListScope.genreMixSection(
    playlists: List<PlaylistRef>,
    offline: Boolean,
    onPlaylistClick: (String) -> Unit,
    onPlayPool: (OfflinePoolKind) -> Unit,
    onPlayPlaylist: suspend (PlaylistRef) -> Unit,
 ) {
    val rowItems = buildGenreMixRow(playlists, offline)
    if (rowItems.isEmpty()) return
    item {
        PlaylistsRow(
            title = "Your genres",
            rowItems = rowItems,
            offline = offline,
            onPlaylistClick = onPlaylistClick,
            onPlayPool = onPlayPool,
            onPlayPlaylist = onPlayPlaylist,
        )
    }
 }
 private fun LazyListScope.recentlyAddedSection(
    albums: List<HomeTile<AlbumRef>>,
    onAlbumClick: (String) -> Unit,
@@ -1000,7 +1032,7 @@ private fun EmptySection(title: String, body: String) {
 /**
 * Rediscover may have both an albums sub-row and an artists sub-row. When
 * both are present the artist row gets an empty title so the section
- * reads as a single visual block — matches the Flutter behavior.
+ * reads as a single visual block.
 */
@Composable
 private fun RediscoverBlock(
@@ -1164,18 +1196,12 @@ enum class OfflinePoolKind(val label: String) {
 * placeholder otherwise), then the secondary system kinds (deep cuts /
 * rediscover / new for you / on this day / first listens) when they exist —
 * no placeholders for these since they're conditional on library shape — then
- * user-owned playlists. Songs-like has its own dedicated row (#1491) via
+ * user-owned playlists. Songs-like has its own row via [buildSongsLikeRow].
 * [buildSongsLikeRow] and no longer appears in this carousel.
 *
 * Offline: the two cache-backed pools (Recently played, Liked) lead, then the
 * same real playlists in curated order but stably partitioned fully-cached
 * first / greyed after, and the "building/pending" placeholders are dropped
 * (they need the server to generate, so they're meaningless offline).
 *
 * Diverges from Flutter (the Flutter client
 * `_buildPlaylistsRow`) which only shows the 5 fixed slots and never
 * surfaces the secondary kinds on Home. Operator authorized the
 * divergence on 2026-06-01; web UI catch-up tracked as task #53.
 */
 internal fun buildPlaylistsRow(
    owned: List<PlaylistRef>,
@@ -1204,7 +1230,7 @@ private fun buildOnlineRow(
    out += owned.firstOrNull { it.systemVariant == "discover" }
        ?.let { PlaylistRowItem.Real(it) }
        ?: PlaylistRowItem.Placeholder("Discover", variantFor("discover", status))
-    // Songs-like is no longer here — it has its own dedicated row (#1491).
+    // Songs-like is not here: it has its own row.
    for (variant in SECONDARY_SYSTEM_VARIANTS) {
        owned.firstOrNull { it.systemVariant == variant }?.let { out += PlaylistRowItem.Real(it) }
    }
@@ -1213,8 +1239,8 @@ private fun buildOnlineRow(
 }
 /**
- * Builds the dedicated Songs-like row (#1491): all "Songs like {artist}"
+ * Builds the dedicated Songs-like row: every "Songs like {artist}" mix
- * mixes the server generated, no longer capped to the 3 carousel slots.
+ * the server generated, uncapped.
 *
 * Online: every generated mix as a real card; when none exist yet, a few
 * placeholders so the building / seed-needed state stays visible.
@@ -1239,12 +1265,31 @@ internal fun buildSongsLikeRow(
    }
 }
 /**
 * Builds the "Your genres" row: every genre mix, in name order so the
 * shelf reads like a stable channel list. No placeholders — a genre mix
 * needs listening history or a genre-tagged library, so none built means
 * nothing to show. Offline, fully-cached mixes come first and the rest are
 * greyed. Mirrors the web Home's genreMixPlaylists.
 */
 internal fun buildGenreMixRow(
    owned: List<PlaylistRef>,
    offline: Boolean,
 ): List<PlaylistRowItem> {
    val mixes = owned
        .filter { it.systemVariant == "genre_mix" }
        .sortedBy { it.name.lowercase() }
    if (!offline) return mixes.map { PlaylistRowItem.Real(it) }
    val (available, greyed) = mixes.partition { !it.unavailableOffline }
    return (available + greyed).map { PlaylistRowItem.Real(it) }
 }
 /**
 * Curated real-playlist order (system primaries, then secondary, then user).
 * Must mirror [buildOnlineRow]'s slot order — the offline row reuses this and
 * only differs by dropping placeholders + partitioning available-first.
 * Songs-like is excluded here too — it renders in its own row via
- * [buildSongsLikeRow] in both online and offline modes (#1491).
+ * [buildSongsLikeRow] in both online and offline modes.
 */
 private fun orderedRealPlaylists(owned: List<PlaylistRef>): List<PlaylistRef> {
    val out = mutableListOf<PlaylistRef>()
@@ -1266,7 +1311,7 @@ private fun variantFor(slot: String, s: SystemPlaylistsStatus): String = when {
 // How many "Songs like…" placeholder cards the dedicated row shows while
 // the mixes haven't generated yet (building / seed-needed). Real mixes,
-// once generated, are shown in full and no longer capped by this (#1491).
+// once generated, are shown in full, uncapped.
 private const val SONGS_LIKE_PLACEHOLDER_SLOTS = 3
 /**
@@ -1308,8 +1353,7 @@ private fun ArtistsRow(
 /**
 * Most-played section. Renders compact track tiles (cover + title + artist).
 * Tapping a tile replaces the queue with the entire section starting
- * at that tile — mirrors Flutter's `_resolveSectionTracks` behaviour
+ * at that tile — Home sections are themselves playable units.
 * where Home sections are themselves playable units.
 */
@Composable
 private fun MostPlayedRow(
@@ -1373,12 +1417,8 @@ private const val MOST_PLAYED_TILE_HEIGHT_DP = 56
 private const val MOST_PLAYED_COVER_DP = 48
 // 3 rows of MOST_PLAYED_TILE_HEIGHT_DP + 2 * 8dp inter-row spacing,
-// rounded up. Mirrors Flutter (`CompactTrackCard` in
+// rounded up. Horizontal-row cards, much denser than the square
-// the Flutter client) which
+// per-track tiles web uses, so more tracks fit in less space.
 // uses a horizontal-row card pattern - much denser than the square
 // per-track tiles that web uses (operator request 2026-06-01: "in the
 // flutter iteration the tiles were different and smaller so more of
 // them could fit in a smaller space").
 private const val MOST_PLAYED_GRID_HEIGHT_DP = 200
@Composable
@@ -23,10 +23,9 @@ import javax.inject.Singleton
 * server and upsert into Room — the Flow emissions then propagate
 * automatically.
 *
- * Constructs its own LibraryApi from the shared Retrofit. Per the
+ * Constructs its own LibraryApi from the shared Retrofit: repositories
- * "repositories own their interfaces" pattern adopted in Phase 5.1's
+ * own their interfaces (see NetworkModule), so there is no @Provides
- * NetworkModule, we don't @Provides per-endpoint Retrofit interfaces
+ * per endpoint — fewer Hilt bindings, locality of reference.
 * — fewer Hilt bindings, locality of reference.
 */
 // LibraryRepository owns reads + refreshes for three entity families
 // (artists / albums / tracks) plus shuffle. Function count scales with
@@ -46,8 +45,7 @@ class LibraryRepository @Inject constructor(
    // Joins each artist to its first cached album (by sort title) so the
    // tile cover derives from /api/albums/{id}/cover — cached_artists
-    // stores no cover and sync carries none. Mirrors Flutter's
+    // stores no cover and sync carries none.
    // artistTileProvider JOIN.
    fun observeArtists(): Flow<List<ArtistRef>> =
        combine(artistDao.observeAll(), albumDao.observeAll()) { artists, albums ->
            val firstAlbumByArtist = albums
@@ -161,13 +159,12 @@ class LibraryRepository @Inject constructor(
    suspend fun shuffleLibrary(limit: Int = SHUFFLE_DEFAULT_LIMIT): List<TrackRef> =
        api.shuffleLibrary(limit = limit).map { it.toDomain() }
-    // ---- Browse axes (#367 / #2467) ----
+    // ---- Browse axes ----
    //
-    // Server-backed rather than cache-first, unlike everything above. The
+    // Server-backed rather than cache-first, unlike everything above: the
-    // cache mirrors the whole library but includes tracks whose files are
+    // server's index leaves out tracks whose files are missing and is the
-    // missing, with no flag to spot them (#2704), while the server's index
+    // one the web client shows. See LibraryApi for why the cache's own
-    // excludes them -- so a locally-derived index would quietly disagree with
+    // missing mark is not used to build it locally.
    // the web client's. Revisit when #2704 lands.
    /** Genre index, ordered by track count then name (server order). */
    suspend fun genres(): List<GenreCount> =
@@ -67,7 +67,7 @@ class AlbumDetailViewModel @Inject constructor(
    init {
        refresh()
-        // Screen-level auto-recovery (issue #1245): a detail that failed to
+        // Screen-level auto-recovery: a detail that failed to
        // load while the server was unreachable re-fetches when health
        // returns, so coming back to the screen shows content, not an error.
        viewModelScope.launch {
@@ -310,9 +310,9 @@ private fun ArtistHeader(
@Composable
 private fun ArtistAvatar(artist: ArtistRef, fallbackAlbumId: String? = null) {
-    // Server coverUrl wins; otherwise mirror the server's "use the
+    // Server coverUrl wins; otherwise use the first loaded album's
-    // first album's cover" rule via the loaded album list (Flutter
+    // cover, the same rule the server applies. Bare Lucide.User only
-    // _ArtistAvatar). Bare Lucide.User only when neither exists.
+    // when neither exists.
    val model = when {
        artist.coverUrl.isNotEmpty() -> artist.coverUrl
        fallbackAlbumId != null -> albumCoverPath(fallbackAlbumId)
@@ -72,7 +72,7 @@ class ArtistDetailViewModel @Inject constructor(
    init {
        refresh()
-        // Screen-level auto-recovery (issue #1245). From Error, redo the
+        // Screen-level auto-recovery. From Error, redo the
        // whole load; from Success, re-pull just the secondary sections —
        // their fetch failures are swallowed to emptyList, so a dead zone
        // during the first load leaves them permanently absent otherwise.
@@ -139,10 +139,9 @@ class ArtistDetailViewModel @Inject constructor(
    /**
     * Pull every track across the artist's albums, shuffle, and start
-     * playing. Mirrors Flutter's artist Play button — pressing Play on
+     * playing. Pressing Play on an artist means "shuffle this artist",
-     * an artist is implicitly "shuffle this artist", not "play album by
+     * not "play album by album in tracklist order". One network
-     * album in tracklist order". Network round-trip per click; fine
+     * round-trip per click; fine because the user explicitly tapped Play.
     * because the user explicitly tapped Play.
     */
    fun playArtist() {
        viewModelScope.launch {
--- a/Show More
+++ b/Show More