feat: retire the sketch/doodle WIP title tier, and the review strip asks "Is this a WIP?" (milestone 430)

The soft tier (#1474) tagged `wip` on any post titled sketch, doodle or
scribble: 6,096 of the library's 8,876 wip tags. Its conflict audit flagged
most of them, because finished art scores >= 0.5 on some content head,
which filled the Gallery strip with 2,086 cards. A "sketch" is usually
finished work, so the operator retired the tier. The artist's own
"WIP" / "work in progress" title rule and human wip tags stay.

- Removed: the soft matcher, source and prefilter; the importer and backfill
  soft branches; soft_wip_conflict_audit with its task and beat; the
  wip_soft_title_tagging_enabled setting, API field and toggle; and
  wip_title_soft from _AUTO_SOURCES.
- Migration 0112: a soft tag the operator confirmed, or kept from the strip,
  becomes `manual`. Every other soft tag is deleted, along with the open
  review cards whose tag is gone. The column is dropped.
- Review strip (#4424): each card asks "Is this a WIP?" (or banner, and so on),
  and the buttons read "Is a WIP" / "Is not a WIP". The content tag it also
  scored on is shown as the reason it was flagged.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LVjrnpQjRgHdvq95rASoiR

frontend/src/components/gallery/HiddenReviewStrip.vue

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

frontend/src/components/settings/ImportFiltersForm.vue

@@ -103,17 +103,6 @@
           the Explore browse. Applies to new imports; run the scan below to catch
           posts already in your library.
         </div>
-        <v-switch
-          v-model="local.wip_soft_title_tagging_enabled"
-          label="Also tag “sketch” / “doodle” titles (lower precision)"
-          density="compact" hide-details color="primary" @change="save"
-        />
-        <div class="fc-help mb-3">
-          Extends the above to softer cues (<code>sketch</code>, <code>doodle</code>,
-          <code>scribble</code>). These stay <strong>visible</strong> and never train
-          the tagging model — a daily audit flags any that actually look like finished
-          art for review. Off by default.
-        </div>
         <v-btn
           variant="tonal" color="primary" size="small"
           :loading="store.wipScanBusy" prepend-icon="mdi-magnify"
@@ -156,7 +145,6 @@ const local = reactive({
   skip_single_color: false, single_color_threshold: 0.95,
   phash_threshold: 24,
   wip_title_tagging_enabled: true,
-  wip_soft_title_tagging_enabled: false,
 })
 
 watch(() => store.settings, (s) => { if (s) Object.assign(local, s) }, { immediate: true })