revert: remove the placement reconciler — it manufactured the problem it solved

Milestone #421 built a sweep that compared each image's `artist_id` to the
name of the directory holding its file, and called every mismatch a misplaced
image. It reported 33,789 of 63,605 as wrongly filed. That number described
the comparison, not the library.

What it actually was:

  32,475  (97.1%)  one artist's own folder, spelled differently
                   — Telepurte/ vs telepurte/. Same artist, same art.
     657  ( 2.0%)  loose at the images root
     328  ( 1.0%)  in a folder named after a different artist

And the 1% did not mean what the tool assumed either. `ImageProvenance`
records the post and source every file was downloaded from — the
authoritative answer, which the tool never consulted. Querying it for all 328:

    144  provenance agrees with the record  (move would be right)
     87  provenance agrees with the FOLDER  (the record is wrong; move wrong)
     53  provenance names SEVERAL artists   (no single correct folder)
     41  no provenance at all
      3  agrees with neither

So the sweep would have misfiled or arbitrarily picked for ~41% of the only
set it was really needed for. The system already knew where each file came
from; the tool inferred it from a column and a directory name instead.

Operator, 2026-09-21: *"the current system consistently records where items
are and where they came from this is just complicating something works and
doesn't need fixing."* Correct on both counts.

Removed: the service, the tasks, the model and migration 0099's table, the
/api/cleanup/layout and /placement/* endpoints, the Maintenance card and its
store actions, and the tests. 0100 drops the table (rule #22 — no legacy).

KEPT deliberately, per the operator:
- `utils.paths.canonical_subdir` — new filesystem imports derive their
  directory from the artist's slug, matching what the downloader always did.
  Not part of this tool; removing it would be churn that fixes nothing.
- The 327 files run 1 moved (InsoUwu/ -> insouwu/). Same artist either way,
  and the gallery renders them correctly.
- Everything from #4223 (three-gate dedup, 256-bit pHash) and #4234 (backup
  credential exclusion). Those fixed problems that were actually reported.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LVjrnpQjRgHdvq95rASoiR

frontend/src/components/settings/MaintenancePanel.vue

@@ -54,7 +54,6 @@
         Self-healing and repair: missing files, thumbnails, database upkeep.
       </p>
       <div class="fc-tile-grid">
-        <PlacementCard />
         <MissingFileRepairCard />
         <ThumbnailBackfillCard />
         <DbMaintenanceCard />
@@ -81,7 +80,6 @@ import MLBackfillCard from './MLBackfillCard.vue'
 import ThumbnailBackfillCard from './ThumbnailBackfillCard.vue'
 import ArchiveReextractCard from './ArchiveReextractCard.vue'
 import MissingFileRepairCard from './MissingFileRepairCard.vue'
-import PlacementCard from './PlacementCard.vue'
 import GpuTriageCard from './GpuTriageCard.vue'
 import DbMaintenanceCard from './DbMaintenanceCard.vue'
 import VideoEmbeddingCard from './VideoEmbeddingCard.vue'

frontend/src/components/settings/PlacementCard.vue

@@ -1,312 +0,0 @@
-<template>
-  <MaintenanceTile
-    icon="mdi-folder-move"
-    title="File placement"
-    blurb="Put every image in its own artist's folder, one artist at a time."
-  >
-    <p class="fc-muted text-body-2 mb-4">
-      The library keeps one folder per artist, named after them. Files written
-      under older rules can sit in another artist's folder — this moves them
-      home, updating the record and the file together. Every run can be
-      reverted, so the safe way to use it is one artist at a time: run it,
-      look at the gallery, then continue or put it back.
-    </p>
-
-    <v-alert
-      v-if="error" type="warning" variant="tonal" density="compact" class="mb-3"
-    >{{ error }}</v-alert>
-
-    <!-- Survey -->
-    <div class="fc-settings-row mb-3">
-      <v-btn
-        variant="tonal" rounded="pill" prepend-icon="mdi-magnify"
-        :loading="surveying" @click="onSurvey"
-      >Check placement</v-btn>
-      <span v-if="layout" class="fc-muted text-body-2">
-        {{ layout.misplaced_rows.toLocaleString() }} of
-        {{ layout.total_rows.toLocaleString() }} images are in the wrong folder
-        <template v-if="layout.misplaced_rows">
-          — across {{ layout.artists.length }} artists
-        </template>
-      </span>
-    </div>
-
-    <v-table v-if="layout && layout.artists.length" density="compact" class="mb-2">
-      <thead>
-        <tr>
-          <th>Artist</th>
-          <th class="text-right">To move</th>
-          <th>Currently in</th>
-          <th class="text-right">Plan</th>
-        </tr>
-      </thead>
-      <tbody>
-        <tr v-for="a in layout.artists" :key="a.artist_id">
-          <td>{{ a.name }}</td>
-          <td class="text-right fc-tabular">{{ a.misplaced_rows.toLocaleString() }}</td>
-          <td class="fc-muted text-body-2">{{ a.stray_dirs.join(', ') }}</td>
-          <td class="text-right">
-            <v-btn
-              size="small" variant="text" :loading="planningId === a.artist_id"
-              @click="onPlan(a.artist_id)"
-            >Plan</v-btn>
-          </td>
-        </tr>
-      </tbody>
-    </v-table>
-
-    <v-divider class="my-4" />
-
-    <!-- Runs -->
-    <h3 class="fc-section-title">Runs</h3>
-    <v-table density="compact">
-      <thead>
-        <tr>
-          <th>When</th>
-          <th>Scope</th>
-          <th>Status</th>
-          <th class="text-right">Planned</th>
-          <th class="text-right">Moved</th>
-          <th class="text-right">Refused</th>
-          <th class="text-right">Actions</th>
-        </tr>
-      </thead>
-      <tbody>
-        <tr v-for="r in store.placementRuns" :key="r.id">
-          <td class="fc-tabular" :title="r.started_at">
-            {{ formatRelative(r.started_at) }}
-          </td>
-          <td>{{ artistName(r.artist_id) }}</td>
-          <td>
-            <v-icon size="small" :color="statusColor(r.status)">
-              {{ statusIcon(r.status) }}
-            </v-icon>
-            {{ r.status }}
-          </td>
-          <td class="text-right fc-tabular">{{ r.planned_count.toLocaleString() }}</td>
-          <td class="text-right fc-tabular">{{ r.moved_count.toLocaleString() }}</td>
-          <td class="text-right fc-tabular">
-            <span :class="r.refused_count ? 'text-warning' : 'fc-muted'">
-              {{ r.refused_count.toLocaleString() }}
-            </span>
-          </td>
-          <td class="text-right">
-            <KebabMenu :label="`Actions for placement run ${r.id}`">
-              <v-list-item title="Review…" @click="onReview(r)" />
-              <v-list-item
-                title="Move files" :disabled="r.status !== 'ready' || !r.planned_count"
-                @click="onApply(r)"
-              />
-              <v-list-item
-                title="Put back…" :disabled="r.status !== 'applied'"
-                @click="onRevert(r)"
-              />
-            </KebabMenu>
-          </td>
-        </tr>
-        <tr v-if="!store.placementRuns.length">
-          <td colspan="7" class="text-center fc-muted py-4">
-            No runs yet. Check placement above, then plan one artist.
-          </td>
-        </tr>
-      </tbody>
-    </v-table>
-
-    <!-- Review: the plan, which is what gets agreed to -->
-    <v-dialog v-model="reviewOpen" max-width="900">
-      <v-card>
-        <v-card-title>
-          Run {{ reviewRun?.id }} — {{ reviewRun?.planned_count?.toLocaleString() }} moves
-        </v-card-title>
-        <v-card-text>
-          <p class="fc-muted text-body-2 mb-3">
-            Showing the first {{ REVIEW_LIMIT }}. Each row moves the file and
-            its record together; nothing is overwritten.
-          </p>
-          <v-table density="compact">
-            <tbody>
-              <tr v-for="m in reviewMoves" :key="m.image_id">
-                <td class="fc-muted text-caption">{{ m.from }}</td>
-                <td class="text-caption">→ {{ m.to }}</td>
-              </tr>
-            </tbody>
-          </v-table>
-          <div v-if="reviewRun?.refusals?.length" class="mt-4">
-            <h4 class="fc-section-title">Refused ({{ reviewRun.refusals.length }})</h4>
-            <p class="fc-muted text-body-2">
-              Rows the run declined to touch — the source moved, the
-              destination was taken, or the record changed since planning.
-            </p>
-            <div
-              v-for="f in reviewRun.refusals.slice(0, REVIEW_LIMIT)" :key="f.image_id"
-              class="text-caption fc-muted"
-            >#{{ f.image_id }} — {{ f.reason }}</div>
-          </div>
-        </v-card-text>
-        <v-card-actions>
-          <v-spacer />
-          <v-btn variant="text" @click="reviewOpen = false">Close</v-btn>
-        </v-card-actions>
-      </v-card>
-    </v-dialog>
-
-    <v-dialog v-model="confirmOpen" max-width="520">
-      <v-card>
-        <v-card-title>{{ confirmTitle }}</v-card-title>
-        <v-card-text class="text-body-2">{{ confirmMessage }}</v-card-text>
-        <v-card-actions>
-          <v-spacer />
-          <v-btn variant="text" @click="confirmOpen = false">Cancel</v-btn>
-          <v-btn
-            color="accent" variant="flat" rounded="pill"
-            @click="confirmOpen = false; onConfirmed()"
-          >Go ahead</v-btn>
-        </v-card-actions>
-      </v-card>
-    </v-dialog>
-  </MaintenanceTile>
-</template>
-
-<script setup>
-import { computed, onMounted, onUnmounted, ref } from 'vue'
-
-import KebabMenu from '../common/KebabMenu.vue'
-import MaintenanceTile from '../common/MaintenanceTile.vue'
-import { useCleanupStore } from '../../stores/cleanup.js'
-import { formatRelative } from '../../utils/date.js'
-import { toast } from '../../utils/toast.js'
-
-// A whole-library plan is tens of thousands of moves. The dialog is for
-// judging whether the moves look right, which a sample answers — the full
-// list is in the run row if anyone needs it.
-const REVIEW_LIMIT = 200
-
-const store = useCleanupStore()
-const layout = ref(null)
-const artists = ref({})
-const surveying = ref(false)
-const planningId = ref(null)
-const error = ref('')
-
-const reviewOpen = ref(false)
-const reviewRun = ref(null)
-const reviewMoves = computed(() => (reviewRun.value?.moves || []).slice(0, REVIEW_LIMIT))
-
-const confirmOpen = ref(false)
-const confirmTitle = ref('')
-const confirmMessage = ref('')
-let confirmAction = null
-
-let poll = null
-
-function artistName(id) {
-  if (id === null || id === undefined) return 'Whole library'
-  return artists.value[id] || `#${id}`
-}
-
-function statusIcon(s) {
-  return {
-    ready: 'mdi-clipboard-text-outline', applied: 'mdi-check-circle',
-    reverted: 'mdi-undo-variant', error: 'mdi-close-circle',
-    running: 'mdi-timer-sand', cancelled: 'mdi-cancel',
-  }[s] || 'mdi-help-circle'
-}
-function statusColor(s) {
-  return {
-    ready: 'accent', applied: 'success', reverted: 'info',
-    error: 'error', running: 'warning',
-  }[s] || 'grey'
-}
-
-async function guard(fn) {
-  error.value = ''
-  try {
-    return await fn()
-  } catch (e) {
-    error.value = e?.message || String(e)
-  }
-}
-
-async function onSurvey() {
-  surveying.value = true
-  try {
-    await guard(async () => { layout.value = await store.loadLayout() })
-  } finally {
-    surveying.value = false
-  }
-}
-
-async function onPlan(artistId) {
-  planningId.value = artistId
-  try {
-    await guard(async () => {
-      await store.planPlacement(artistId)
-      toast('Planning — the run appears below when it is ready')
-      await store.loadPlacementRuns()
-    })
-  } finally {
-    planningId.value = null
-  }
-}
-
-async function onReview(run) {
-  await guard(async () => {
-    reviewRun.value = await store.getPlacementRun(run.id)
-    reviewOpen.value = true
-  })
-}
-
-function ask(title, message, action) {
-  confirmTitle.value = title
-  confirmMessage.value = message
-  confirmAction = action
-  confirmOpen.value = true
-}
-
-function onApply(run) {
-  ask(
-    'Move these files?',
-    `${run.planned_count.toLocaleString()} files move into their artist's `
-    + 'folder. The record and the file move together, and this run can be '
-    + 'put back afterwards.',
-    async () => {
-      await store.applyPlacement(run.id)
-      toast('Moving files — this runs in the background')
-      await store.loadPlacementRuns()
-    },
-  )
-}
-
-function onRevert(run) {
-  ask(
-    'Put these files back?',
-    `${run.moved_count.toLocaleString()} files return to where they were `
-    + 'before this run.',
-    async () => {
-      await store.revertPlacement(run.id)
-      toast('Putting files back — this runs in the background')
-      await store.loadPlacementRuns()
-    },
-  )
-}
-
-async function onConfirmed() {
-  const action = confirmAction
-  confirmAction = null
-  if (action) await guard(action)
-}
-
-onMounted(async () => {
-  await guard(async () => {
-    artists.value = await store.loadArtistNames()
-    await store.loadPlacementRuns()
-  })
-  // Runs change state in a worker, so the table needs refreshing. The rows
-  // are server-side, which is why no localStorage resurfacing is needed here
-  // (useMaintenanceTask's job) — a reload or another machine sees the same
-  // state because the state IS the row.
-  poll = setInterval(() => { store.loadPlacementRuns().catch(() => {}) }, 5000)
-})
-
-onUnmounted(() => { if (poll) clearInterval(poll) })
-</script>

frontend/src/stores/cleanup.js

@@ -71,66 +71,10 @@ export const useCleanupStore = defineStore('cleanup', () => {
     return await api.post(`/api/cleanup/audit/${id}/cancel`)
   }
 
-  // --- placement reconciler (milestone #421) --------------------------------
-  //
-  // Runs are server-side rows, so the DATABASE is the durable state here —
-  // no localStorage resurfacing (useMaintenanceTask) is needed. Reload the
-  // page, open it on another machine, and the run and its status are simply
-  // there. That also means a plan survives being walked away from for a day.
-
-  const placementRuns = ref([])
-  const layout = ref(null)
-
-  // The survey: which rows sit outside their artist's directory. check_disk
-  // additionally stats every destination (collisions, missing sources) and
-  // costs one stat per misplaced row over NFS, so it is opt-in.
-  async function loadLayout(checkDisk = false) {
-    layout.value = await api.get('/api/cleanup/layout', {
-      params: checkDisk ? { check_disk: 1 } : {},
-    })
-    return layout.value
-  }
-
-  // id -> name, so a run row can say "Conto" instead of "#47". The runs
-  // endpoint carries artist_id alone: the name belongs to the artist, and
-  // denormalising it into every run would go stale the moment one is renamed.
-  async function loadArtistNames() {
-    const rows = await api.get('/api/artists/names')
-    return Object.fromEntries((rows || []).map(a => [a.id, a.name]))
-  }
-
-  async function loadPlacementRuns(limit = 25) {
-    const body = await api.get('/api/cleanup/placement/runs', { params: { limit } })
-    placementRuns.value = body.runs || []
-    return placementRuns.value
-  }
-
-  // Detail carries `moves` — the plan the operator reads before agreeing.
-  async function getPlacementRun(id) {
-    return await api.get(`/api/cleanup/placement/runs/${id}`)
-  }
-
-  async function planPlacement(artistId = null) {
-    return await api.post('/api/cleanup/placement/plan', {
-      body: artistId === null ? {} : { artist_id: artistId },
-    })
-  }
-
-  async function applyPlacement(id) {
-    return await api.post(`/api/cleanup/placement/runs/${id}/apply`)
-  }
-
-  async function revertPlacement(id) {
-    return await api.post(`/api/cleanup/placement/runs/${id}/revert`)
-  }
-
   return {
     defaults, recentRuns,
     loadDefaults,
     previewMinDim, deleteMinDim,
     startAudit, getAudit, loadHistory, latestAuditForRule, applyAudit, cancelAudit,
-    placementRuns, layout,
-    loadLayout, loadArtistNames, loadPlacementRuns, getPlacementRun,
-    planPlacement, applyPlacement, revertPlacement,
   }
 })