From 5b34c9221c2101d41acfcdfa5c1c83ba52baccc0 Mon Sep 17 00:00:00 2001
From: Bryan Van Deusen <bryan.vandeusen@fabledsword.com>
Date: Thu, 2 Jul 2026 17:37:21 -0400
Subject: [PATCH] =?UTF-8?q?feat(ia):=20wave=201=20=E2=80=94=20Import=20tab?=
 =?UTF-8?q?=20dissolves,=20Maintenance=20regroups=20by=20system,=20one=20e?=
 =?UTF-8?q?xtension=20home?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Settings IA per the approved A3 design (the old layout was the two-app merge
fossilized):
- Import tab retired: ImportTriggerPanel + ImportTaskList deleted (manual
  /import scans stay API-level; imports arrive via downloads/extension, heal
  via the Layer-2 auto-refetch sweep, and show in Activity). ImportFiltersForm
  moves to Maintenance → 'Ingestion & filters' and loads its own settings; the
  import store shrinks to settings-only (no remaining consumers of the
  scan/task-list machinery). Overview's pending banner now points at Activity.
- Maintenance regrouped: Ingestion & filters / GPU agent & embeddings
  (GpuAgent, Failed processing, CPU embedding backfill) / Tagging (sliders,
  Heads, Aliases) / Library health (MissingFiles, Thumbnails, DB, Archive
  re-extract demoted last) / Storage.
- One extension home: BrowserExtensionCard moves from Settings → Overview to
  Subscriptions → Settings, above the API key bar it authenticates.
- Single-color import filter WIRED: skip_single_color/threshold existed since
  FC-2 but nothing read them (the audit module's docstring said as much) —
  now enforced on both import paths via the audit's canonical predicate
  (tolerance 30, matching the Cleanup card default; animated images exempt
  like the transparency check). Default stays off; test added.
- Dead weight: PlaceholderView (zero refs) and the permanently-disabled
  'Export failed logs (CSV — v2)' menu stub deleted; stale docs fixed
  (celery queue docstring, threshold comment citing retired tasks, ml
  package docstring, HeadsCard 'replaces Camie' blurb).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CDgx8bQS5YrGRK76v8HUnM
---
 backend/app/celery_app.py                     |   2 +-
 backend/app/services/audits/single_color.py   |   9 +-
 backend/app/services/importer.py              |  42 +++
 backend/app/services/ml/__init__.py           |   4 +-
 backend/app/tasks/maintenance.py              |   7 +-
 .../src/components/settings/HeadsCard.vue     |   2 +-
 .../components/settings/ImportFiltersForm.vue |   6 +-
 .../components/settings/ImportTaskList.vue    | 254 ------------------
 .../settings/ImportTriggerPanel.vue           |  97 -------
 .../components/settings/MaintenancePanel.vue  |  48 +++-
 .../subscriptions/MaintenanceMenu.vue         |  13 +-
 .../components/subscriptions/SettingsTab.vue  |   9 +-
 frontend/src/stores/import.js                 | 140 +---------
 frontend/src/views/PlaceholderView.vue        |  34 ---
 frontend/src/views/SettingsView.vue           |  50 +---
 tests/test_importer.py                        |  24 ++
 16 files changed, 143 insertions(+), 598 deletions(-)
 delete mode 100644 frontend/src/components/settings/ImportTaskList.vue
 delete mode 100644 frontend/src/components/settings/ImportTriggerPanel.vue
 delete mode 100644 frontend/src/views/PlaceholderView.vue

diff --git a/backend/app/celery_app.py b/backend/app/celery_app.py
index f6d249e..74e2403 100644
--- a/backend/app/celery_app.py
+++ b/backend/app/celery_app.py
@@ -7,7 +7,7 @@ Queues:
   download    — gallery-dl tasks (FC-3)
   scan        — periodic source checks (FC-3) — kept separate so long imports
                 don't starve the scheduler
-  maintenance — pHash recomputation, centroid rebuild, etc. (FC-2/FC-3)
+  maintenance — recovery sweeps, pHash backfill, GPU-queue coordination, etc.
   default     — anything not explicitly routed
 """
 
diff --git a/backend/app/services/audits/single_color.py b/backend/app/services/audits/single_color.py
index 167e078..6bddf07 100644
--- a/backend/app/services/audits/single_color.py
+++ b/backend/app/services/audits/single_color.py
@@ -1,8 +1,9 @@
 """Single-color audit: matches images where one color dominates beyond
-the threshold (within the given Euclidean RGB tolerance). The first
-canonical implementation — the import-side filter (SkipReason.single_color)
-was never wired; FC-Cleanup's audit module is the source of truth and a
-future spec can adopt it on the import path too.
+the threshold (within the given Euclidean RGB tolerance). The canonical
+predicate for BOTH surfaces: FC-Cleanup's retroactive audit and — since
+2026-07-02 — the import-side filter (Importer._single_color_hit /
+SkipReason.single_color), so what the audit flags and what the import
+skips can never disagree.
 """
 
 from PIL import Image
diff --git a/backend/app/services/importer.py b/backend/app/services/importer.py
index 8afd219..2459836 100644
--- a/backend/app/services/importer.py
+++ b/backend/app/services/importer.py
@@ -44,6 +44,7 @@ from ..utils.sidecar import find_sidecar, parse_sidecar
 from ..utils.slug import slugify
 from .archive_extractor import extract_archive, is_archive
 from .attachment_store import AttachmentStore
+from .audits import single_color
 from .link_extract import extract_external_links
 from .thumbnailer import Thumbnailer
 
@@ -790,6 +791,13 @@ class Importer:
                         error=f"{pct:.2%} transparent",
                     )
 
+            if self.settings.skip_single_color and self._single_color_hit(source):
+                return ImportResult(
+                    status="skipped", skip_reason=SkipReason.single_color,
+                    error=(f"one color dominates >"
+                           f"{self.settings.single_color_threshold:.0%}"),
+                )
+
         # Artist anchored to the attribution path (folder→artist), resolved
         # UP-FRONT so the enrich-on-duplicate branches link provenance with the
         # right artist even when the sidecar carries none — which is now the norm
@@ -1123,6 +1131,13 @@ class Importer:
                         status="skipped", skip_reason=SkipReason.too_transparent,
                         error=f"{pct:.2%} transparent",
                     )
+
+            if self.settings.skip_single_color and self._single_color_hit(path):
+                return ImportResult(
+                    status="skipped", skip_reason=SkipReason.single_color,
+                    error=(f"one color dominates >"
+                           f"{self.settings.single_color_threshold:.0%}"),
+                )
         else:
             # Best-effort probe for dims + duration so downloaded videos can dedup
             # (#871). LENIENT: unlike _import_media this path does not reject on a
@@ -1538,6 +1553,33 @@ class Importer:
                 # Benign orphan; the DB swap already committed. Don't undo it.
                 pass
 
+    # Matches the Cleanup audit card's default tolerance: the import-side
+    # filter and the retroactive audit must agree on what "single color" MEANS
+    # (Euclidean RGB distance to the dominant color); only the match threshold
+    # is operator-tunable per surface.
+    _SINGLE_COLOR_TOLERANCE = 30
+
+    def _single_color_hit(self, source: Path) -> bool:
+        """True when one color dominates beyond the configured threshold — the
+        same canonical predicate the Cleanup audit runs (audits.single_color,
+        whose docstring anticipated this adoption; the skip_single_color
+        setting existed but was never wired until 2026-07-02). Never raises:
+        unreadable files were already rejected by verify() upstream, and a
+        residual decode error just declines to match (the import proceeds)."""
+        try:
+            with Image.open(source) as im:
+                if getattr(im, "is_animated", False):
+                    # Frame 0 only would misjudge animations; skip like the
+                    # transparency check does.
+                    return False
+                return single_color.evaluate(
+                    im,
+                    threshold=self.settings.single_color_threshold,
+                    tolerance=self._SINGLE_COLOR_TOLERANCE,
+                )
+        except Exception:
+            return False
+
     def _transparency_pct(self, source: Path) -> float:
         """Fraction of fully-transparent pixels in the image. 0.0 if no alpha.
 
diff --git a/backend/app/services/ml/__init__.py b/backend/app/services/ml/__init__.py
index 82ab712..723ddb4 100644
--- a/backend/app/services/ml/__init__.py
+++ b/backend/app/services/ml/__init__.py
@@ -1 +1,3 @@
-"""ML pipeline services: tagger, embedder, suggestions, centroids, allowlist, aliases."""
+"""ML pipeline services: embedders, heads (the learning suggester), suggestions,
+GPU-job queue + failure triage, CCIP characters, crops/regions, allowlist and
+aliases."""
diff --git a/backend/app/tasks/maintenance.py b/backend/app/tasks/maintenance.py
index 755cde8..f9549d9 100644
--- a/backend/app/tasks/maintenance.py
+++ b/backend/app/tasks/maintenance.py
@@ -139,10 +139,9 @@ QUEUE_STUCK_THRESHOLD_MINUTES: dict[str, int] = {
     "download": 30,
     # Audit 2026-06-02 — maintenance/scan queues run tasks that
     # legitimately exceed the 5-min default (verify_integrity at 70m
-    # hard, scan_directory at 70m hard, apply_allowlist_tags /
-    # recompute_centroids / backfill_phash at 35m hard). 75 min lives
-    # above the longest of those and the per-task overrides below
-    # cover the outliers (backups, library audit).
+    # hard, scan_directory at 70m hard, backfill_phash at 35m hard).
+    # 75 min lives above the longest of those and the per-task
+    # overrides below cover the outliers (backups, library audit).
     "maintenance": 75,
     "scan": 75,
 }
diff --git a/frontend/src/components/settings/HeadsCard.vue b/frontend/src/components/settings/HeadsCard.vue
index b9e684b..7117b0d 100644
--- a/frontend/src/components/settings/HeadsCard.vue
+++ b/frontend/src/components/settings/HeadsCard.vue
@@ -2,7 +2,7 @@
   <MaintenanceTile
     icon="mdi-brain"
     title="Concept heads (the learning suggester)"
-    blurb="Train the per-concept heads that turn your tags into suggestions — they replace Camie and sharpen every time you accept or reject."
+    blurb="Train the per-concept heads that turn your tags into suggestions — they learn from your library and sharpen every time you accept or reject."
     :open="running"
   >
     <p class="fc-muted text-body-2 mb-3">
diff --git a/frontend/src/components/settings/ImportFiltersForm.vue b/frontend/src/components/settings/ImportFiltersForm.vue
index c538b35..3210d9e 100644
--- a/frontend/src/components/settings/ImportFiltersForm.vue
+++ b/frontend/src/components/settings/ImportFiltersForm.vue
@@ -90,10 +90,14 @@
 </template>
 
 <script setup>
-import { reactive, watch } from 'vue'
+import { onMounted, reactive, watch } from 'vue'
 import { useImportStore } from '../../stores/import.js'
 
 const store = useImportStore()
+// Self-sufficient since the Import tab dissolved (2026-07-02): this form now
+// lives in Maintenance → Ingestion & filters and loads its own settings
+// instead of relying on the old tab's mount hook.
+onMounted(() => { if (!store.settings) store.loadSettings() })
 // Labelled stops so the less-initiated get the gist without knowing what a
 // Hamming distance is. 0 = byte-for-byte only; 10 = the shipped default.
 const PHASH_TICKS = { 0: 'Exact', 4: 'Strict', 10: 'Default', 16: 'Loose' }
diff --git a/frontend/src/components/settings/ImportTaskList.vue b/frontend/src/components/settings/ImportTaskList.vue
deleted file mode 100644
index 40c5755..0000000
--- a/frontend/src/components/settings/ImportTaskList.vue
+++ /dev/null
@@ -1,254 +0,0 @@
-<template>
-  <v-card>
-    <CardHeading title="Recent import tasks">
-      <v-spacer />
-      <v-select
-        v-model="statusFilter" :items="statusOptions" density="compact"
-        hide-details style="max-width: 180px;" @update:model-value="onFilterChange"
-      />
-      <v-btn variant="text" rounded="pill" size="small" @click="onRefresh">
-        <v-icon start>mdi-refresh</v-icon>
-        Refresh
-      </v-btn>
-      <v-btn
-        variant="text" rounded="pill" size="small" color="warning"
-        :disabled="!hasFailed" @click="onRetryFailed"
-      >
-        Retry failed
-      </v-btn>
-      <v-btn
-        variant="text" rounded="pill" size="small" color="warning"
-        :disabled="!hasStuck" @click="onClearStuckOpen"
-      >
-        Clear stuck…
-      </v-btn>
-      <v-btn
-        variant="text" rounded="pill" size="small" color="error"
-        @click="onClearOpen"
-      >
-        Clear completed…
-      </v-btn>
-    </CardHeading>
-    <v-data-table-virtual
-      :headers="headers" :items="store.tasks" :loading="store.tasksLoading"
-      height="480" density="compact" fixed-header no-data-text="No tasks yet — trigger a scan above."
-    >
-      <template #item.status="{ item }">
-        <v-chip :color="statusColor(item.status)" size="small" variant="tonal">
-          {{ item.status }}
-        </v-chip>
-      </template>
-      <template #item.source_path="{ item }">
-        <span :title="item.source_path">{{ shorten(item.source_path) }}</span>
-      </template>
-      <template #item.size_bytes="{ item }">{{ formatBytes(item.size_bytes) }}</template>
-      <template #item.created_at="{ item }">{{ formatDate(item.created_at) }}</template>
-      <template #item.error="{ item }">
-        <button
-          v-if="item.error" type="button" class="fc-err-link text-caption"
-          @click="openError(`Task ${item.id} failed`, item.error)"
-          title="Click for full error"
-        >{{ shorten(item.error, 60) }}</button>
-      </template>
-      <template #item.actions="{ item }">
-        <v-btn
-          v-if="item.status === 'failed'"
-          icon size="x-small" variant="text"
-          :loading="refetching === item.id"
-          @click="onRefetch(item)"
-        >
-          <v-icon size="small">mdi-cloud-refresh</v-icon>
-          <v-tooltip activator="parent" location="top">
-            Re-fetch original (re-download from source)
-          </v-tooltip>
-        </v-btn>
-      </template>
-    </v-data-table-virtual>
-    <div v-if="store.hasMore" class="d-flex justify-center py-3">
-      <v-btn variant="text" size="small" @click="onLoadMore">Load more</v-btn>
-    </div>
-
-    <v-dialog v-model="clearDialog" max-width="400">
-      <v-card>
-        <v-card-title>Clear completed tasks</v-card-title>
-        <v-card-text>
-          <v-select
-            v-model="clearAgeDays" label="Older than"
-            :items="[
-              { title: 'All finished', value: 0 },
-              { title: '1 day',  value: 1 },
-              { title: '7 days', value: 7 },
-              { title: '30 days', value: 30 }
-            ]"
-          />
-        </v-card-text>
-        <v-card-actions>
-          <v-spacer />
-          <v-btn @click="clearDialog = false">Cancel</v-btn>
-          <v-btn color="error" rounded="pill" @click="onClearConfirm">Clear</v-btn>
-        </v-card-actions>
-      </v-card>
-    </v-dialog>
-
-    <v-dialog v-model="clearStuckDialog" max-width="480">
-      <v-card>
-        <v-card-title>Clear stuck tasks</v-card-title>
-        <v-card-text>
-          <v-alert type="warning" variant="tonal" density="compact" class="mb-3">
-            Force every <strong>pending / queued / processing</strong> task to
-            <strong>failed</strong> and finalize any active batch that
-            has no remaining work. Use this when the automatic recovery
-            sweep keeps re-queueing the same row (e.g., corrupt file in
-            an autoretry loop, or worker model missing).
-          </v-alert>
-          <p class="text-body-2">
-            Tasks remain in the database with status=<code>failed</code>;
-            click <em>Retry failed</em> once the underlying cause is
-            resolved to re-queue them.
-          </p>
-        </v-card-text>
-        <v-card-actions>
-          <v-spacer />
-          <v-btn @click="clearStuckDialog = false">Cancel</v-btn>
-          <v-btn color="warning" rounded="pill" @click="onClearStuckConfirm">Clear stuck</v-btn>
-        </v-card-actions>
-      </v-card>
-    </v-dialog>
-
-    <ErrorDetailModal
-      v-model="showErrorModal"
-      :title="errorModalTitle"
-      :message="errorModalMessage"
-    />
-  </v-card>
-</template>
-
-<script setup>
-import { toast } from '../../utils/toast.js'
-import { computed, ref } from 'vue'
-import { useImportStore } from '../../stores/import.js'
-import ErrorDetailModal from '../common/ErrorDetailModal.vue'
-import CardHeading from '../common/CardHeading.vue'
-
-const store = useImportStore()
-const statusFilter = ref(null)
-const clearDialog = ref(false)
-// Click-to-open modal for full error text (operator-flagged 2026-05-26
-// — the prior :title="..." tooltip cramped multi-line SQLAlchemy
-// tracebacks into an unusable popup with no copy-paste affordance).
-const showErrorModal = ref(false)
-const errorModalTitle = ref('')
-const errorModalMessage = ref('')
-
-function openError(title, message) {
-  errorModalTitle.value = title
-  errorModalMessage.value = message || ''
-  showErrorModal.value = true
-}
-const clearAgeDays = ref(7)
-const clearStuckDialog = ref(false)
-
-const statusOptions = [
-  { title: 'All', value: null },
-  { title: 'Pending', value: 'pending' },
-  { title: 'Queued', value: 'queued' },
-  { title: 'Processing', value: 'processing' },
-  { title: 'Complete', value: 'complete' },
-  { title: 'Skipped', value: 'skipped' },
-  { title: 'Failed', value: 'failed' }
-]
-
-const headers = [
-  { title: 'Status', key: 'status', sortable: false, width: 120 },
-  { title: 'Source', key: 'source_path', sortable: false },
-  { title: 'Size', key: 'size_bytes', sortable: false, width: 90 },
-  { title: 'Created', key: 'created_at', sortable: false, width: 150 },
-  { title: 'Note', key: 'error', sortable: false },
-  { title: '', key: 'actions', sortable: false, width: 56 }
-]
-
-const refetching = ref(null)
-const _REFETCH_MSG = {
-  refetch_queued: { text: 'Re-fetch queued — re-downloading from source', type: 'success' },
-  no_source: { text: 'No re-fetchable source (filesystem import — replace the file manually)', type: 'info' },
-  already_refetched: { text: 'Already re-fetched once', type: 'info' },
-}
-async function onRefetch(item) {
-  refetching.value = item.id
-  try {
-    const res = await store.refetchTask(item.id)
-    const msg = _REFETCH_MSG[res.status] || { text: `Re-fetch: ${res.status}`, type: 'info' }
-    toast(msg)
-  } catch (e) {
-    toast({ text: `Re-fetch failed: ${e.message}`, type: 'error' })
-  } finally {
-    refetching.value = null
-  }
-}
-
-const hasFailed = computed(() => store.tasks.some(t => t.status === 'failed'))
-const hasStuck = computed(() => store.tasks.some(
-  t => t.status === 'pending' || t.status === 'queued' || t.status === 'processing'
-))
-
-function statusColor(s) {
-  return {
-    complete: 'success',
-    skipped: 'warning',
-    failed: 'error',
-    processing: 'accent',
-    queued: 'info',
-    pending: 'info'
-  }[s] || 'default'
-}
-function shorten(s, max = 90) {
-  if (!s) return ''
-  if (s.length <= max) return s
-  const head = Math.floor((max - 3) * 0.6)
-  const tail = max - 3 - head
-  return s.slice(0, head) + '...' + s.slice(-tail)
-}
-function formatBytes(b) {
-  if (!b) return ''
-  const units = ['B', 'KiB', 'MiB', 'GiB']
-  let i = 0; let v = b
-  while (v >= 1024 && i < units.length - 1) { v /= 1024; i++ }
-  return `${v.toFixed(i === 0 ? 0 : 1)} ${units[i]}`
-}
-function formatDate(s) {
-  try { return new Date(s).toLocaleString() } catch { return s }
-}
-
-async function onRefresh() { await store.loadTasks(true) }
-function onFilterChange() { store.setStatusFilter(statusFilter.value); store.loadTasks(true) }
-async function onLoadMore() { await store.loadTasks(false) }
-async function onRetryFailed() { await store.retryFailed() }
-function onClearOpen() { clearDialog.value = true }
-async function onClearConfirm() {
-  await store.clearCompleted(clearAgeDays.value)
-  clearDialog.value = false
-}
-function onClearStuckOpen() { clearStuckDialog.value = true }
-async function onClearStuckConfirm() {
-  await store.clearStuck()
-  clearStuckDialog.value = false
-}
-</script>
-
-<style scoped>
-.fc-err-link {
-  /* Truncated error preview as a clickable button — opens
-     ErrorDetailModal with the full text. Inherits the row's font
-     sizing so it doesn't visually drift from the prior tooltip-bearing
-     span. */
-  color: rgb(var(--v-theme-error, 220 80 80));
-  background: transparent;
-  border: 0;
-  padding: 0;
-  font: inherit;
-  text-align: left;
-  text-decoration: underline dotted;
-  cursor: pointer;
-}
-.fc-err-link:hover { text-decoration: underline; }
-</style>
diff --git a/frontend/src/components/settings/ImportTriggerPanel.vue b/frontend/src/components/settings/ImportTriggerPanel.vue
deleted file mode 100644
index 8873d92..0000000
--- a/frontend/src/components/settings/ImportTriggerPanel.vue
+++ /dev/null
@@ -1,97 +0,0 @@
-<template>
-  <v-card>
-    <v-card-title>Trigger scan</v-card-title>
-    <v-card-text>
-      <div v-if="store.activeBatch" class="d-flex align-center mb-3" style="gap: 12px;">
-        <v-progress-circular
-          indeterminate color="accent" size="20"
-        />
-        <span>
-          {{ store.activeBatch.scan_mode === 'deep' ? 'Deep scanning' : 'Scanning' }}
-          {{ store.activeBatch.source_path || '/import' }} —
-          imported {{ store.activeBatch.imported }},
-          <template v-if="store.activeBatch.scan_mode === 'deep'">
-            refreshed {{ store.activeBatch.refreshed || 0 }},
-          </template>
-          skipped {{ store.activeBatch.skipped }},
-          failed {{ store.activeBatch.failed }} /
-          {{ store.activeBatch.total_files }} files
-        </span>
-        <v-spacer />
-        <v-btn
-          variant="text" rounded="pill" size="small" color="warning"
-          :loading="clearing" @click="onClearStuck"
-        >
-          Clear stuck
-        </v-btn>
-      </div>
-
-      <p class="text-body-2 mb-3">
-        <span v-if="!store.activeBatch">
-          <strong>Quick scan</strong> walks <code>/import</code> and enqueues
-          new files only.
-          <strong>Deep scan</strong> additionally re-walks already-imported
-          files so updated sidecar metadata (post title/date/attribution) and
-          previously-NULL phashes / artist links get refreshed. Use after
-          bulk-downloading fresh sidecars for existing content. Both modes
-          route non-media + sidecar pairs through PostAttachment capture.
-        </span>
-        <span v-else>
-          An active batch is in progress. Wait for it to finish, or click
-          <em>Clear stuck</em> above if it has been wedged with no
-          measurable progress.
-        </span>
-      </p>
-
-      <div class="d-flex flex-wrap" style="gap: 12px;">
-        <v-btn
-          color="primary" rounded="pill"
-          :disabled="!!store.activeBatch"
-          :loading="busy === 'quick'"
-          @click="trigger('quick')"
-        >
-          <v-icon start>mdi-magnify-scan</v-icon>
-          Quick scan
-        </v-btn>
-        <v-btn
-          color="secondary" rounded="pill" variant="tonal"
-          :disabled="!!store.activeBatch"
-          :loading="busy === 'deep'"
-          @click="trigger('deep')"
-        >
-          <v-icon start>mdi-magnify-plus-outline</v-icon>
-          Deep scan
-        </v-btn>
-      </div>
-
-      <v-alert v-if="store.triggerError" type="error" variant="tonal" class="mt-3" closable>
-        {{ store.triggerError }}
-      </v-alert>
-    </v-card-text>
-  </v-card>
-</template>
-
-<script setup>
-import { ref } from 'vue'
-import { useImportStore } from '../../stores/import.js'
-
-const store = useImportStore()
-const busy = ref(null)
-const clearing = ref(false)
-
-async function trigger(mode) {
-  busy.value = mode
-  try { await store.triggerScan(mode) } catch {} finally { busy.value = null }
-}
-
-async function onClearStuck() {
-  clearing.value = true
-  try {
-    await store.clearStuck()
-  } catch {
-    // store surfaces error via triggerError if needed
-  } finally {
-    clearing.value = false
-  }
-}
-</script>
diff --git a/frontend/src/components/settings/MaintenancePanel.vue b/frontend/src/components/settings/MaintenancePanel.vue
index 69acbcc..26cae1f 100644
--- a/frontend/src/components/settings/MaintenancePanel.vue
+++ b/frontend/src/components/settings/MaintenancePanel.vue
@@ -1,36 +1,59 @@
 <template>
   <div class="fc-maint">
     <p class="fc-muted text-body-2 mb-5">
-      One-off backfills, tagging config and storage tools. Heads train nightly
-      and auto-apply earned tags. Click a tile to open it.
+      Processing, tagging and storage tools, grouped by system. Heads train
+      nightly and auto-apply earned tags. Click a tile to open it.
     </p>
 
     <section class="fc-section">
-      <h3 class="fc-section__title">Backfills &amp; reprocessing</h3>
-      <p class="fc-section__hint">Re-run tagging, thumbnails, extraction and DB upkeep.</p>
-      <div class="fc-tile-grid">
-        <MLBackfillCard />
-        <ThumbnailBackfillCard />
-        <ArchiveReextractCard />
-        <MissingFileRepairCard />
+      <h3 class="fc-section__title">Ingestion &amp; filters</h3>
+      <p class="fc-section__hint">
+        What gets imported — dedup sensitivity, size/transparency/solid-color
+        filters. Applies to downloads and folder imports alike.
+      </p>
+      <div class="fc-tile-stack">
+        <ImportFiltersForm />
+      </div>
+    </section>
+
+    <section class="fc-section">
+      <h3 class="fc-section__title">GPU agent &amp; embeddings</h3>
+      <p class="fc-section__hint">
+        The desktop agent that does the heavy lifting, its failure triage, and
+        the CPU fallback.
+      </p>
+      <div class="fc-tile-stack">
+        <GpuAgentCard />
         <GpuTriageCard />
-        <DbMaintenanceCard />
+        <MLBackfillCard />
       </div>
     </section>
 
     <section class="fc-section">
       <h3 class="fc-section__title">Tagging</h3>
       <p class="fc-section__hint">
-        Suggestion thresholds, the auto-apply allowlist and tag aliases.
+        Suggestion thresholds, trained heads and tag aliases.
       </p>
       <div class="fc-tile-stack">
         <MLThresholdSliders />
         <HeadsCard />
-        <GpuAgentCard />
         <AliasTable />
       </div>
     </section>
 
+    <section class="fc-section">
+      <h3 class="fc-section__title">Library health</h3>
+      <p class="fc-section__hint">
+        Self-healing and repair: missing files, thumbnails, database upkeep.
+      </p>
+      <div class="fc-tile-grid">
+        <MissingFileRepairCard />
+        <ThumbnailBackfillCard />
+        <DbMaintenanceCard />
+        <ArchiveReextractCard />
+      </div>
+    </section>
+
     <section class="fc-section">
       <h3 class="fc-section__title">Storage</h3>
       <p class="fc-section__hint">Database + image backups and restore.</p>
@@ -44,6 +67,7 @@
 <script setup>
 import { onMounted, onUnmounted } from 'vue'
 
+import ImportFiltersForm from './ImportFiltersForm.vue'
 import MLBackfillCard from './MLBackfillCard.vue'
 import ThumbnailBackfillCard from './ThumbnailBackfillCard.vue'
 import ArchiveReextractCard from './ArchiveReextractCard.vue'
diff --git a/frontend/src/components/subscriptions/MaintenanceMenu.vue b/frontend/src/components/subscriptions/MaintenanceMenu.vue
index ffae2c9..a7bc0a4 100644
--- a/frontend/src/components/subscriptions/MaintenanceMenu.vue
+++ b/frontend/src/components/subscriptions/MaintenanceMenu.vue
@@ -18,14 +18,6 @@
         subtitle="Mark stranded pending/running events as error (also runs every 5 min)"
         @click="emit('recover-stalled')"
       />
-      <v-list-item
-        :disabled="true"
-        prepend-icon="mdi-download-box"
-        title="Export failed logs"
-        subtitle="CSV dump — v2"
-      >
-        <v-tooltip activator="parent" location="start">Deferred to a future release</v-tooltip>
-      </v-list-item>
     </v-list>
   </v-menu>
 </template>
@@ -33,7 +25,8 @@
 <script setup>
 // The Downloads tab parent (DownloadsTab.vue) owns the actual retry/sweep
 // handlers — same toast + refresh logic already used by the failing-sources
-// RETRY ALL button. We just emit. Import-pipeline maintenance lives in
-// Settings → Imports (ImportTaskList.vue), not here.
+// RETRY ALL button. We just emit. (A permanently-disabled "Export failed
+// logs" stub sat here until 2026-07-02 — retired; the event list + detail
+// modal cover forensics.)
 const emit = defineEmits(['retry-failed', 'recover-stalled'])
 </script>
diff --git a/frontend/src/components/subscriptions/SettingsTab.vue b/frontend/src/components/subscriptions/SettingsTab.vue
index 3d86e13..ed07fc2 100644
--- a/frontend/src/components/subscriptions/SettingsTab.vue
+++ b/frontend/src/components/subscriptions/SettingsTab.vue
@@ -1,12 +1,18 @@
 <template>
   <div>
+    <!-- One extension home (2026-07-02): install/manifest card (moved here
+         from Settings → Overview) + the API key bar it authenticates with.
+         The extension feeds THIS view — cookies + one-click sources — so its
+         setup lives with the rest of the ingestion config. -->
+    <h3 class="text-h6 mb-3">Browser extension</h3>
+    <BrowserExtensionCard class="mb-3" />
     <ExtensionKeyBar class="mb-4" />
 
     <v-alert v-if="credentialsStore.error" type="error" variant="tonal" closable class="mb-4">
       {{ String(credentialsStore.error) }}
     </v-alert>
 
-    <h3 class="text-h6 mb-3">Platform credentials</h3>
+    <h3 class="text-h6 mb-3 mt-6">Platform credentials</h3>
     <v-row>
       <v-col
         v-for="p in platformsStore.list"
@@ -179,6 +185,7 @@ import { onMounted, reactive, ref, watch } from 'vue'
 import { usePlatformsStore } from '../../stores/platforms.js'
 import { useCredentialsStore } from '../../stores/credentials.js'
 import { useImportStore } from '../../stores/import.js'
+import BrowserExtensionCard from '../settings/BrowserExtensionCard.vue'
 import ExtensionKeyBar from '../credentials/ExtensionKeyBar.vue'
 import CredentialUploadDialog from '../credentials/CredentialUploadDialog.vue'
 import CredentialCard from './CredentialCard.vue'
diff --git a/frontend/src/stores/import.js b/frontend/src/stores/import.js
index f52c436..b98a881 100644
--- a/frontend/src/stores/import.js
+++ b/frontend/src/stores/import.js
@@ -1,8 +1,15 @@
 import { defineStore } from 'pinia'
 import { toast } from '../utils/toast.js'
-import { ref, computed } from 'vue'
+import { ref } from 'vue'
 import { useApi } from '../composables/useApi.js'
 
+// Import SETTINGS only. The manual-scan trigger + task-list surfaces retired
+// with the Import tab (2026-07-02): imports arrive via downloads/extension and
+// heal themselves (Layer-2 auto-refetch sweep); their runs show in Activity.
+// The /api/import/trigger + /tasks endpoints remain for direct/API use.
+// Consumers: ImportFiltersForm (Maintenance → Ingestion & filters) and the
+// Subscriptions Settings tab (downloader/extdl/schedule fields on the same
+// ImportSettings row).
 export const useImportStore = defineStore('import', () => {
   const api = useApi()
 
@@ -10,16 +17,6 @@ export const useImportStore = defineStore('import', () => {
   const settingsLoading = ref(false)
   const settingsError = ref(null)
 
-  const activeBatch = ref(null)
-  const statusLoading = ref(false)
-
-  const tasks = ref([])
-  const tasksNextCursor = ref(null)
-  const tasksLoading = ref(false)
-  const tasksFilter = ref({ status: null, limit: 50 })
-
-  const triggerError = ref(null)
-
   async function loadSettings() {
     settingsLoading.value = true
     settingsError.value = null
@@ -43,129 +40,8 @@ export const useImportStore = defineStore('import', () => {
     }
   }
 
-  async function refreshStatus() {
-    statusLoading.value = true
-    try {
-      const body = await api.get('/api/import/status')
-      activeBatch.value = body.active_batch
-    } finally {
-      statusLoading.value = false
-    }
-  }
-
-  async function triggerScan(mode = 'quick') {
-    if (!['quick', 'deep', 'verify'].includes(mode)) {
-      throw new Error(`unsupported scan mode: ${mode}`)
-    }
-    triggerError.value = null
-    try {
-      await api.post('/api/import/trigger', { body: { mode } })
-      // Acknowledge immediately so the click isn't invisible. scan_directory
-      // can finalize the batch synchronously when every file in /import is
-      // already on a non-failed ImportTask (operator-flagged 2026-05-25:
-      // 233k existing tasks → all paths in skip-set → files_seen=0 →
-      // batch flashes 'running' for <100ms then 'complete' before the
-      // first refreshStatus() lands; UI never sees the active state).
-      const label = mode === 'deep'
-        ? 'Deep scan triggered (re-applying sidecar metadata + filling NULL phash/artist on existing rows)'
-        : mode === 'verify' ? 'Library verify triggered' : 'Quick scan triggered'
-      toast({ text: label, type: 'success' })
-      await refreshStatus()
-      // Re-poll twice over ~5s and produce an HONEST follow-up toast.
-      // Operator-flagged 2026-05-25: the prior "no new files" message was
-      // misleading because deep scan IS doing work (refresh) even when
-      // there are no new files to import. Surface the real workload count
-      // (imported + refreshed + queued) instead. For quick scan + zero
-      // queued work, fall back to "up to date" instead of the old
-      // implementation-detail-leaking message.
-      setTimeout(async () => {
-        await refreshStatus()
-        await loadTasks(true)
-        if (activeBatch.value || mode === 'verify') return
-        // Batch finalized quickly; figure out what actually happened.
-        // The task list was just refreshed; the freshest row(s) carry
-        // the batch outcome.
-        const batchId = tasks.value[0]?.batch_id
-        const sameBatch = batchId
-          ? tasks.value.filter(t => t.batch_id === batchId)
-          : []
-        const refreshedCount = sameBatch.filter(t => t.status === 'complete' && t.result_image_id).length
-        const newImported = sameBatch.filter(t => t.status === 'complete' && t.result_image_id && !t.error).length
-        if (mode === 'deep' && sameBatch.length > 0) {
-          toast({
-            text: `Deep scan finished — ${sameBatch.length} file(s) processed`,
-            type: 'info',
-          })
-        } else if (mode === 'quick' && sameBatch.length > 0) {
-          toast({
-            text: `Quick scan finished — ${newImported} new file(s) queued`,
-            type: 'info',
-          })
-        } else {
-          toast({ text: 'Library is up to date', type: 'info' })
-        }
-      }, 2000)
-    } catch (e) {
-      triggerError.value = e.message
-      toast({ text: `Scan failed: ${e.message}`, type: 'error' })
-      throw e
-    }
-  }
-
-  async function loadTasks(reset = true) {
-    tasksLoading.value = true
-    try {
-      const params = { limit: tasksFilter.value.limit }
-      if (tasksFilter.value.status) params.status = tasksFilter.value.status
-      if (!reset && tasksNextCursor.value) params.cursor = tasksNextCursor.value
-      const body = await api.get('/api/import/tasks', { params })
-      tasks.value = reset ? body.tasks : [...tasks.value, ...body.tasks]
-      tasksNextCursor.value = body.next_cursor
-    } finally {
-      tasksLoading.value = false
-    }
-  }
-
-  function setStatusFilter(status) {
-    tasksFilter.value.status = status
-  }
-
-  async function retryFailed() {
-    await api.post('/api/import/retry-failed')
-    await loadTasks(true)
-  }
-
-  async function clearCompleted(ageDays = 0) {
-    await api.post('/api/import/clear-completed', { body: { age_days: ageDays } })
-    await loadTasks(true)
-  }
-
-  async function clearStuck() {
-    const body = await api.post('/api/import/clear-stuck')
-    await loadTasks(true)
-    await refreshStatus()
-    return body
-  }
-
-  // Layer-2 one-shot re-download for a failed task's (corrupt) file.
-  // Returns the endpoint's status dict (refetch_queued / no_source /
-  // already_refetched). Caller surfaces it as a toast.
-  async function refetchTask(taskId) {
-    const body = await api.post(`/api/import/tasks/${taskId}/refetch`)
-    await loadTasks(true)
-    return body
-  }
-
-  const hasMore = computed(() => tasksNextCursor.value !== null)
-
   return {
     settings, settingsLoading, settingsError,
-    activeBatch, statusLoading,
-    tasks, tasksLoading, tasksFilter, hasMore,
-    triggerError,
     loadSettings, patchSettings,
-    refreshStatus, triggerScan,
-    loadTasks, setStatusFilter, retryFailed, clearCompleted, clearStuck,
-    refetchTask,
   }
 })
diff --git a/frontend/src/views/PlaceholderView.vue b/frontend/src/views/PlaceholderView.vue
deleted file mode 100644
index 02fe3a2..0000000
--- a/frontend/src/views/PlaceholderView.vue
+++ /dev/null
@@ -1,34 +0,0 @@
-<template>
-  <v-container class="pt-3 pb-8">
-    <h1 class="fc-h1 mb-4">{{ title }}</h1>
-    <v-alert type="info" variant="tonal" icon="mdi-toolbox">
-      This surface is a placeholder. It will be implemented in
-      <strong>{{ surfaceOwner }}</strong>.
-    </v-alert>
-  </v-container>
-</template>
-
-<script setup>
-import { computed } from 'vue'
-import { useRoute } from 'vue-router'
-
-const route = useRoute()
-const title = computed(() => route.meta.title ?? 'FabledCurator')
-
-const surfaceOwner = computed(() => {
-  const fc2 = new Set(['gallery', 'showcase', 'tags', 'settings'])
-  const fc3 = new Set(['subscriptions', 'credentials', 'downloads'])
-  if (fc2.has(route.name)) return 'FC-2 (image backbone)'
-  if (fc3.has(route.name)) return 'FC-3 (subscription backbone)'
-  return 'a future sub-project'
-})
-</script>
-
-<style scoped>
-.fc-h1 {
-  font-family: 'Fraunces', Georgia, serif;
-  font-size: 32px;
-  font-weight: 500;
-  color: rgb(var(--v-theme-on-surface));
-}
-</style>
diff --git a/frontend/src/views/SettingsView.vue b/frontend/src/views/SettingsView.vue
index dd146d2..acb8a83 100644
--- a/frontend/src/views/SettingsView.vue
+++ b/frontend/src/views/SettingsView.vue
@@ -17,7 +17,6 @@
     >
       <v-tab value="overview">Overview</v-tab>
       <v-tab value="activity">Activity</v-tab>
-      <v-tab value="import">Import</v-tab>
       <v-tab value="cleanup">Cleanup</v-tab>
       <v-tab value="maintenance">Maintenance</v-tab>
     </v-tabs>
@@ -34,31 +33,14 @@
           type="info" variant="tonal" class="mt-4" closable
         >
           {{ system.stats.tasks.pending + system.stats.tasks.queued }} import task(s) pending.
-          <v-btn variant="text" size="small" @click="tab = 'import'">Go to Import tab</v-btn>
+          <v-btn variant="text" size="small" @click="tab = 'activity'">View in Activity</v-btn>
         </v-alert>
-        <!-- Browser-extension install/download lives on Overview (moved
-             from Maintenance 2026-05-25). Overview is the discovery
-             surface for "things to set up"; Maintenance is for
-             housekeeping of already-set-up systems. -->
-        <BrowserExtensionCard class="mt-6" />
       </v-window-item>
 
       <v-window-item value="activity">
         <SystemActivityTab />
       </v-window-item>
 
-      <v-window-item value="import">
-        <!-- Order: filters → trigger → recent tasks. Filters hoisted above the
-             trigger (operator-flagged 2026-06-04); the task list stays
-             directly below the trigger so hit/miss feedback is adjacent to the
-             button that produced it (operator-flagged 2026-05-25). -->
-        <ImportFiltersForm />
-        <v-divider class="my-6" />
-        <ImportTriggerPanel />
-        <v-divider class="my-6" />
-        <ImportTaskList />
-      </v-window-item>
-
       <v-window-item value="cleanup">
         <CleanupView />
       </v-window-item>
@@ -73,21 +55,15 @@
 <script setup>
 import { onMounted, onUnmounted, ref, watch } from 'vue'
 import { useSystemStore } from '../stores/system.js'
-import { useImportStore } from '../stores/import.js'
 import SystemStatsCards from '../components/settings/SystemStatsCards.vue'
 import SystemActivitySummary from '../components/settings/SystemActivitySummary.vue'
 import SystemActivityTab from '../components/settings/SystemActivityTab.vue'
-import BrowserExtensionCard from '../components/settings/BrowserExtensionCard.vue'
-import ImportTriggerPanel from '../components/settings/ImportTriggerPanel.vue'
-import ImportFiltersForm from '../components/settings/ImportFiltersForm.vue'
-import ImportTaskList from '../components/settings/ImportTaskList.vue'
 import MaintenancePanel from '../components/settings/MaintenancePanel.vue'
 import CleanupView from './CleanupView.vue'
 import { useMLStore } from '../stores/ml.js'
 
 const tab = ref('overview')
 const system = useSystemStore()
-const importStore = useImportStore()
 const mlStore = useMLStore()
 
 let pollId = null
@@ -96,15 +72,7 @@ function startPolling() {
   if (pollId) return
   system.refreshStats()
   pollId = setInterval(() => {
-    if (!document.hidden) {
-      system.refreshStats()
-      if (tab.value === 'import') {
-        importStore.refreshStatus()
-        // Refresh the task list while a batch is in flight so the UI
-        // doesn't sit stale next to a ticking imported/skipped counter.
-        if (importStore.activeBatch) importStore.loadTasks(true)
-      }
-    }
+    if (!document.hidden) system.refreshStats()
   }, 5000)
 }
 
@@ -112,21 +80,11 @@ function stopPolling() {
   if (pollId) { clearInterval(pollId); pollId = null }
 }
 
-onMounted(() => {
-  startPolling()
-  importStore.loadSettings()
-  importStore.refreshStatus()
-  importStore.loadTasks(true)
-})
+onMounted(startPolling)
 onUnmounted(stopPolling)
 
 watch(tab, (t) => {
-  if (t === 'import') {
-    importStore.refreshStatus()
-    importStore.loadTasks(true)
-  } else if (t === 'maintenance') {
-    mlStore.loadSettings()
-  }
+  if (t === 'maintenance') mlStore.loadSettings()
 })
 </script>
 
diff --git a/tests/test_importer.py b/tests/test_importer.py
index ab69ea0..72df212 100644
--- a/tests/test_importer.py
+++ b/tests/test_importer.py
@@ -116,6 +116,30 @@ def test_transparent_filter(importer, import_layout):
     assert result.skip_reason == SkipReason.too_transparent
 
 
+def test_single_color_filter(importer, import_layout):
+    """The skip_single_color setting existed since FC-2 but was never wired
+    (the audit module's docstring said so); wired 2026-07-02 using the same
+    canonical predicate as the Cleanup audit. Solid fill skips when enabled,
+    imports when disabled (the default)."""
+    from PIL import Image as PILImage
+
+    import_root, _ = import_layout
+    solid = import_root / "solid.png"
+    solid.parent.mkdir(parents=True, exist_ok=True)
+    PILImage.new("RGB", (100, 100), (12, 34, 56)).save(solid)
+
+    importer.settings.skip_single_color = True
+    importer.settings.single_color_threshold = 0.95
+    result = importer.import_one(solid)
+    assert result.status == "skipped"
+    assert result.skip_reason == SkipReason.single_color
+
+    importer.settings.skip_single_color = False
+    solid2 = import_root / "solid2.png"
+    PILImage.new("RGB", (100, 100), (200, 10, 10)).save(solid2)
+    assert importer.import_one(solid2).status == "imported"
+
+
 def test_unsupported_extension(importer, import_layout):
     # FC-2d-iii: non-media is no longer skipped — it's captured as a
     # PostAttachment so nothing a post contained is lost.