feat(14.1-03): extract DocumentDetailSurface + refactor DocumentView (Re-analyze copy)

- Create frontend/src/components/storage/DocumentDetailSurface.vue as shared detail
  surface for both local and cloud files (section order: Back → Header → Status →
  Topics → Extracted Text → secondary controls)
- Props: title, metadataLine, source, topics, analysisStatus, extractedText,
  previewState, downloadState, analysisAction
- Emits: back, preview, download, analyze, reanalyze, retry-analysis
- Single analysis action slot swaps Analyze/Re-analyze/Retry by analysisAction.kind
  (no simultaneous buttons per UI-SPEC Re-Analyze contract)
- Imports formatDate, formatSize, providerColor, providerBg, providerLabel from
  utils/formatters.js (no local redefinitions)
- Refactor DocumentView.vue to thin data-provider using DocumentDetailSurface
- Visible label changed from "Re-classify" to "Re-analyze" (internal classifyDocument
  API call preserved per D-09 / Codex discretion)
- No rendered Re-classify remains in either file
- CloudDetailParity Re-classify regression test now passes

frontend/src/components/storage/DocumentDetailSurface.vue

@@ -0,0 +1,263 @@
+<template>
+  <div class="p-8 max-w-4xl mx-auto">
+    <!-- (1) Back navigation slot -->
+    <slot name="back">
+      <button
+        @click="$emit('back')"
+        class="text-sm text-indigo-600 hover:underline mb-6 flex items-center gap-1 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1 rounded"
+      >
+        ← Back
+      </button>
+    </slot>
+
+    <!-- (2) Header block: title, metadata, source metadata, primary action cluster -->
+    <div class="flex items-start justify-between gap-4 mb-6">
+      <div class="min-w-0 flex-1">
+        <!-- Title — 24px semibold, break-all wrap per UI-SPEC -->
+        <h2 class="text-2xl font-semibold text-gray-900 break-all">{{ title }}</h2>
+
+        <!-- Metadata line — date/size/type, 12-14px muted -->
+        <p class="text-sm text-gray-400 mt-1">{{ metadataLine }}</p>
+
+        <!-- Cloud source metadata: provider chip + location (subtle, only when source provided) -->
+        <div v-if="source && source.provider" class="flex items-center gap-2 mt-1.5 flex-wrap">
+          <span
+            class="inline-flex items-center px-2 py-0.5 rounded-full text-xs font-medium"
+            :class="[providerBg(source.provider), providerColor(source.provider)]"
+          >
+            {{ providerLabel(source.provider) }}
+          </span>
+          <span v-if="source.location" class="text-xs text-gray-400 truncate max-w-xs">
+            {{ source.location }}
+          </span>
+        </div>
+      </div>
+
+      <!-- Primary action cluster -->
+      <div class="flex items-center gap-2 shrink-0 flex-wrap justify-end">
+        <!-- Content action: Preview / Open -->
+        <div v-if="previewState">
+          <button
+            v-if="previewState.supported"
+            @click="$emit('preview')"
+            class="text-sm px-3 py-1.5 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 active:bg-indigo-800 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
+          >
+            {{ previewState.openLabel || 'Preview file' }}
+          </button>
+          <button
+            v-else
+            disabled
+            class="text-sm px-3 py-1.5 bg-gray-100 text-gray-400 rounded-lg cursor-not-allowed"
+            :title="previewState.reason || 'Preview unavailable'"
+          >
+            Preview unavailable
+          </button>
+        </div>
+
+        <!-- Download action (explicit — never auto-triggered by preview) -->
+        <button
+          v-if="downloadState && downloadState.supported"
+          @click="$emit('download')"
+          class="text-sm px-3 py-1.5 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 active:bg-gray-100 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
+        >
+          Download
+        </button>
+
+        <!-- Single analysis action slot — swaps Analyze / Re-analyze / Retry by state (never both) -->
+        <button
+          v-if="analysisAction && analysisAction.kind === 'analyze'"
+          @click="$emit('analyze')"
+          :disabled="analysisAction.busy"
+          class="text-sm px-3 py-1.5 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 active:bg-indigo-800 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
+        >
+          {{ analysisAction.busy ? 'Analyzing…' : 'Analyze file' }}
+        </button>
+
+        <button
+          v-else-if="analysisAction && analysisAction.kind === 'reanalyze'"
+          @click="$emit('reanalyze')"
+          :disabled="analysisAction.busy"
+          class="text-sm px-3 py-1.5 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 active:bg-indigo-800 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
+        >
+          {{ analysisAction.busy ? 'Analyzing…' : 'Re-analyze' }}
+        </button>
+
+        <button
+          v-else-if="analysisAction && analysisAction.kind === 'retry'"
+          @click="$emit('retry-analysis')"
+          :disabled="analysisAction.busy"
+          class="text-sm px-3 py-1.5 bg-amber-600 text-white rounded-lg hover:bg-amber-700 active:bg-amber-800 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-amber-500 focus-visible:ring-offset-1"
+        >
+          {{ analysisAction.busy ? 'Retrying…' : 'Retry analysis' }}
+        </button>
+
+        <!-- Secondary action slot (delete, share, suggest — injected by local DocumentView) -->
+        <slot name="secondary-actions" />
+      </div>
+    </div>
+
+    <!-- (3) Status and source notice area -->
+    <div v-if="analysisStatus || (source && source.isStale)" class="mb-5">
+      <!-- Stale badge -->
+      <div
+        v-if="source && source.isStale"
+        class="flex items-center gap-2 px-4 py-2 bg-amber-50 border border-amber-200 rounded-xl text-sm text-amber-800 mb-2"
+      >
+        <span class="font-medium">Stale</span>
+        <span class="text-amber-700">Analysis data may be outdated. Re-analyze to refresh.</span>
+      </div>
+
+      <!-- Preview unavailable notice (shown below header when preview is not supported) -->
+      <div
+        v-if="previewState && !previewState.supported && previewState.reason"
+        class="flex items-center gap-2 px-4 py-2 bg-gray-50 border border-gray-200 rounded-xl text-sm text-gray-600 mb-2"
+      >
+        <span class="font-medium">Preview unavailable</span>
+        <span>{{ previewState.reason }}</span>
+      </div>
+
+      <!-- Working status -->
+      <div
+        v-if="isWorking"
+        class="flex items-center gap-2 px-4 py-2 bg-blue-50 border border-blue-200 rounded-xl text-sm text-blue-800"
+      >
+        <span class="font-medium">{{ source && source.statusLabel ? source.statusLabel : 'Working…' }}</span>
+      </div>
+
+      <!-- Cloud source notice (subtle — for cloud files only) -->
+      <div
+        v-if="source && source.provider"
+        class="text-xs text-gray-400 mt-1"
+      >
+        Preview file, download, and analysis still run through DocuVault.
+      </div>
+    </div>
+
+    <!-- (4) Topics section -->
+    <div class="bg-white border border-gray-200 rounded-xl p-5 mb-5">
+      <div class="flex items-center justify-between mb-3">
+        <h3 class="text-sm font-semibold text-gray-800">Topics</h3>
+        <!-- Suggest topics slot (local DocumentView injects this) -->
+        <slot name="topics-actions" />
+      </div>
+
+      <div class="flex flex-wrap gap-2">
+        <TopicBadge
+          v-for="topic in normalizedTopics"
+          :key="topic.name"
+          :name="topic.name"
+          :color="topic.color"
+        />
+        <span v-if="!normalizedTopics.length" class="text-sm text-gray-400 italic">No topics assigned yet.</span>
+      </div>
+
+      <!-- Inline error (e.g. classify error) -->
+      <slot name="topics-error" />
+
+      <!-- Suggestions panel (local DocumentView injects this) -->
+      <slot name="suggestions" />
+    </div>
+
+    <!-- (5) Extracted text section -->
+    <div class="bg-white border border-gray-200 rounded-xl p-5">
+      <h3 class="text-sm font-semibold text-gray-800 mb-3">Extracted Text</h3>
+      <div v-if="!analysisStatus || analysisStatus === 'pending' || analysisStatus === 'none'" class="text-sm text-gray-400 italic">
+        <!-- Empty state per Copywriting Contract -->
+        <p class="font-medium text-gray-600">No analysis yet</p>
+        <p class="mt-1">Analyze this file to extract text and topics.</p>
+      </div>
+      <pre v-else class="text-xs text-gray-600 whitespace-pre-wrap font-mono bg-gray-50 rounded-lg p-4 max-h-96 overflow-y-auto">{{ extractedText || '(no text extracted)' }}</pre>
+    </div>
+
+    <!-- (6) Secondary controls / inline error+help copy -->
+    <slot name="secondary-controls" />
+  </div>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+import TopicBadge from '../topics/TopicBadge.vue'
+import { formatDate, formatSize, providerColor, providerBg, providerLabel } from '../../utils/formatters.js'
+
+const props = defineProps({
+  /** Document title / filename */
+  title: {
+    type: String,
+    default: '',
+  },
+  /** Formatted metadata string: date · size · type */
+  metadataLine: {
+    type: String,
+    default: '',
+  },
+  /**
+   * Cloud source metadata (omit or null for local files)
+   * { provider, location, isStale, statusLabel }
+   */
+  source: {
+    type: Object,
+    default: null,
+  },
+  /**
+   * Topics array — either strings or {name, color} objects.
+   * DocumentView passes {name, color} objects; CloudDetailView passes strings.
+   */
+  topics: {
+    type: Array,
+    default: () => [],
+  },
+  /** Internal analysis status string (e.g. 'indexed', 'pending', 'failed', 'stale') */
+  analysisStatus: {
+    type: String,
+    default: null,
+  },
+  /** Extracted text content */
+  extractedText: {
+    type: String,
+    default: null,
+  },
+  /**
+   * Preview capability state
+   * { supported: boolean, reason?: string, openLabel?: string }
+   */
+  previewState: {
+    type: Object,
+    default: null,
+  },
+  /**
+   * Download capability state
+   * { supported: boolean }
+   */
+  downloadState: {
+    type: Object,
+    default: null,
+  },
+  /**
+   * Analysis action to show (single — swaps by state)
+   * { kind: 'analyze' | 'reanalyze' | 'retry', busy: boolean }
+   */
+  analysisAction: {
+    type: Object,
+    default: null,
+  },
+})
+
+defineEmits(['back', 'preview', 'download', 'analyze', 'reanalyze', 'retry-analysis'])
+
+/** Normalize topics to always be {name, color} objects */
+const normalizedTopics = computed(() => {
+  return (props.topics || []).map(t => {
+    if (typeof t === 'string') return { name: t, color: '#6366f1' }
+    return { name: t.name ?? t, color: t.color ?? '#6366f1' }
+  })
+})
+
+/** Show working state badge when analysis is in progress */
+const isWorking = computed(() => {
+  const workingStatuses = new Set(['queued', 'downloading', 'extracting', 'classifying'])
+  return workingStatuses.has(props.analysisStatus)
+})
+
+// Re-export formatters so template can use them (tree-shaken if unused)
+defineExpose({ formatDate, formatSize, providerColor, providerBg, providerLabel })
+</script>

frontend/src/views/DocumentView.vue

@@ -1,73 +1,49 @@
 <template>
-  <div class="p-8 max-w-4xl mx-auto">
-    <!-- Back -->
-    <button @click="$router.back()" class="text-sm text-indigo-600 hover:underline mb-6 flex items-center gap-1 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1 rounded">
-      ← Back
-    </button>
+  <div>
+    <div v-if="loading" class="p-8 max-w-4xl mx-auto text-gray-400 text-sm">Loading…</div>
+    <div v-else-if="!doc" class="p-8 max-w-4xl mx-auto text-gray-400 text-sm">Document not found.</div>
 
-    <div v-if="loading" class="text-gray-400 text-sm">Loading…</div>
-    <div v-else-if="!doc" class="text-gray-400 text-sm">Document not found.</div>
+    <DocumentDetailSurface
+      v-else
+      :title="doc.original_name"
+      :metadata-line="metadataLine"
+      :source="null"
+      :topics="doc.topics || []"
+      :analysis-status="doc.analysis_status || 'indexed'"
+      :extracted-text="doc.extracted_text"
+      :preview-state="previewStateComputed"
+      :download-state="null"
+      :analysis-action="analysisActionComputed"
+      @back="$router.back()"
+      @preview="openPdf"
+      @reanalyze="reclassify"
+      @retry-analysis="reclassify"
+    >
+      <template #secondary-actions>
+        <button
+          @click="confirmDelete"
+          class="text-sm text-red-500 hover:text-red-700 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1 rounded"
+        >Delete</button>
+      </template>
 
-    <template v-else>
-      <!-- Header -->
-      <div class="flex items-start justify-between gap-4 mb-6">
-        <div>
-          <h2 class="text-2xl font-semibold text-gray-900 break-all">{{ doc.original_name }}</h2>
-          <p class="text-sm text-gray-400 mt-1">
-            Uploaded {{ formatDate(doc.created_at) }} · {{ formatSize(doc.size_bytes) }} · {{ doc.mime_type }}
-          </p>
-        </div>
-        <div class="flex items-center gap-2 shrink-0">
-          <!-- Open/Preview button for PDFs -->
+      <template #topics-actions>
+        <div class="flex gap-2">
           <button
-            v-if="isPdf"
-            @click="openPdf"
-            class="text-sm px-3 py-1.5 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 active:bg-indigo-800 transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
+            @click="suggestTopics"
+            :disabled="suggesting"
+            class="text-xs px-3 py-1.5 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 active:bg-gray-100 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
           >
-            {{ pdfOpenMode === 'in_app' ? 'Preview' : 'Open' }}
+            {{ suggesting ? 'Suggesting…' : 'Suggest Topics' }}
           </button>
-          <button
-            @click="confirmDelete"
-            class="text-sm text-red-500 hover:text-red-700 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-red-500 focus-visible:ring-offset-1 rounded"
-          >Delete</button>
-        </div>
-      </div>
-
-      <!-- Topics -->
-      <div class="bg-white border border-gray-200 rounded-xl p-5 mb-5">
-        <div class="flex items-center justify-between mb-3">
-          <h3 class="text-sm font-semibold text-gray-800">Topics</h3>
-          <div class="flex gap-2">
-            <button
-              @click="reclassify"
-              :disabled="classifying"
-              class="text-xs px-3 py-1.5 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 active:bg-indigo-800 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
-            >
-              {{ classifying ? 'Classifying…' : 'Re-classify' }}
-            </button>
-            <button
-              @click="suggestTopics"
-              :disabled="suggesting"
-              class="text-xs px-3 py-1.5 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 active:bg-gray-100 transition-colors disabled:opacity-50 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-indigo-500 focus-visible:ring-offset-1"
-            >
-              {{ suggesting ? 'Suggesting…' : 'Suggest Topics' }}
-            </button>
-          </div>
-        </div>
-
-        <div class="flex flex-wrap gap-2">
-          <TopicBadge
-            v-for="name in doc.topics"
-            :key="name"
-            :name="name"
-            :color="topicColor(name)"
-          />
-          <span v-if="!doc.topics?.length" class="text-sm text-gray-400 italic">No topics assigned yet.</span>
         </div>
+      </template>
 
+      <template #topics-error>
         <p v-if="classifyError" class="text-red-500 text-xs mt-2">{{ classifyError }}</p>
+      </template>
 
-        <!-- Suggestions modal inline -->
+      <template #suggestions>
+        <!-- Suggestions panel inline -->
         <div v-if="suggestions.length" class="mt-4 border-t border-gray-100 pt-4">
           <p class="text-sm font-medium text-gray-700 mb-2">AI Suggestions — select to create:</p>
           <div class="flex flex-wrap gap-2 mb-3">
@@ -93,14 +69,8 @@
             </button>
           </div>
         </div>
-      </div>
-
-      <!-- Extracted text -->
-      <div class="bg-white border border-gray-200 rounded-xl p-5">
-        <h3 class="text-sm font-semibold text-gray-800 mb-3">Extracted Text</h3>
-        <pre class="text-xs text-gray-600 whitespace-pre-wrap font-mono bg-gray-50 rounded-lg p-4 max-h-96 overflow-y-auto">{{ doc.extracted_text || '(no text extracted)' }}</pre>
-      </div>
-    </template>
+      </template>
+    </DocumentDetailSurface>
 
     <!-- PDF in-app preview modal -->
     <DocumentPreviewModal
@@ -149,7 +119,7 @@ import { ref, computed, onMounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { formatDate, formatSize } from '../utils/formatters.js'
 import AppIcon from '../components/ui/AppIcon.vue'
-import TopicBadge from '../components/topics/TopicBadge.vue'
+import DocumentDetailSurface from '../components/storage/DocumentDetailSurface.vue'
 import DocumentPreviewModal from '../components/documents/DocumentPreviewModal.vue'
 import { useDocumentsStore } from '../stores/documents.js'
 import { useTopicsStore } from '../stores/topics.js'
@@ -180,6 +150,33 @@ const isPdf = computed(() => {
   return mime === 'application/pdf' || name.toLowerCase().endsWith('.pdf')
 })
 
+/** Metadata line: date · size · MIME type */
+const metadataLine = computed(() => {
+  if (!doc.value) return ''
+  const parts = []
+  if (doc.value.created_at) parts.push(`Uploaded ${formatDate(doc.value.created_at)}`)
+  if (doc.value.size_bytes) parts.push(formatSize(doc.value.size_bytes))
+  if (doc.value.mime_type) parts.push(doc.value.mime_type)
+  return parts.join(' · ')
+})
+
+/** Preview state for the shared surface */
+const previewStateComputed = computed(() => {
+  if (!isPdf.value) return null
+  return {
+    supported: true,
+    openLabel: pdfOpenMode.value === 'in_app' ? 'Preview' : 'Open',
+  }
+})
+
+/** Analysis action for the shared surface — local documents use Re-analyze (label) */
+const analysisActionComputed = computed(() => {
+  return {
+    kind: 'reanalyze',
+    busy: classifying.value,
+  }
+})
+
 onMounted(async () => {
   try {
     doc.value = await api.getDocument(route.params.id)
@@ -225,10 +222,7 @@ async function openPdf() {
   }
 }
 
-function topicColor(name) {
-  return topicsStore.topics.find(t => t.name === name)?.color ?? '#6366f1'
-}
-
+/** Re-analyze (internal: classifyDocument API — preserving D-09 / Codex discretion) */
 async function reclassify() {
   classifying.value = true
   classifyError.value = null