diff --git a/ui/doocus-app/server/doocusApi.ts b/ui/doocus-app/server/doocusApi.ts
index 15ebc35..0b6f892 100644
--- a/ui/doocus-app/server/doocusApi.ts
+++ b/ui/doocus-app/server/doocusApi.ts
@@ -73,6 +73,53 @@ export function doocusApi(opts: Options): Plugin {
     return abs
   }
 
+  // Lazy search index over the cached small text — rebuilt when index.json changes.
+  let searchCache: { mtime: number; entries: Array<{ path: string; hay: string; bytes: number }> } | null = null
+
+  // Read full text for reliable search (local files; speed is secondary). The
+  // generous cap only guards against a pathologically huge file.
+  async function readCap(p: string | null, cap = 20_000_000): Promise<string> {
+    if (!p) return ''
+    try { return (await fsp.readFile(p, 'utf-8')).slice(0, cap) } catch { return '' }
+  }
+
+  async function buildSearchIndex(): Promise<void> {
+    const index = readIndex()
+    if (!index) { searchCache = { mtime: 0, entries: [] }; return }
+    let mtime = 0
+    try { mtime = fs.statSync(indexPath).mtimeMs } catch { /* */ }
+    const entries: Array<{ path: string; hay: string; bytes: number }> = []
+    for (const f of index.files) {
+      let text = `${f.path} ${(f as any).title ?? ''}`
+      if (f.mode === 'extracted' && f.out) {
+        text += ' ' + await readCap(path.join(outputDir, f.out, 'content.md'))
+      } else if (f.mode === 'meeting') {
+        const { dir, stem } = meetusDirFor(f.path)
+        text += ' ' + await readCap(path.join(dir, `${stem}_enhanced.txt`))
+      } else if (TEXT_EXTS.has(f.ext)) {
+        text += ' ' + await readCap(originalAbs(index, f.path))
+      }
+      entries.push({ path: f.path, hay: text.toLowerCase(), bytes: f.bytes })
+    }
+    searchCache = { mtime, entries }
+  }
+
+  async function search(res: ServerResponse, query: string): Promise<void> {
+    const q = query.trim().toLowerCase()
+    let curMtime = 0
+    try { curMtime = fs.statSync(indexPath).mtimeMs } catch { /* */ }
+    if (!searchCache || searchCache.mtime !== curMtime) await buildSearchIndex()
+    const entries = searchCache?.entries ?? []
+    // Empty query matches nothing (the UI shows the full tree when not searching).
+    const hits = q ? entries.filter((e) => e.hay.includes(q)) : []
+    sendJson(res, 200, {
+      query: q,
+      matches: hits.map((e) => e.path),
+      count: hits.length,
+      bytes: hits.reduce((s, e) => s + e.bytes, 0),
+    })
+  }
+
   return {
     name: 'doocus-api',
     configureServer(server) {
@@ -118,6 +165,11 @@ export function doocusApi(opts: Options): Plugin {
       return true
     }
 
+    if (parts[0] === 'search') {
+      await search(res, q.get('q') ?? '')
+      return true
+    }
+
     // meetus-shaped run API (id = meeting rel path), so the composed meetus
     // review store works unchanged when embedded in doocus.
     if (parts[0] === 'runs' && parts.length >= 2) {
diff --git a/ui/doocus-app/src/App.vue b/ui/doocus-app/src/App.vue
index 939fcb2..53cbda2 100644
--- a/ui/doocus-app/src/App.vue
+++ b/ui/doocus-app/src/App.vue
@@ -5,37 +5,55 @@ import SplitPane from '@framework/components/SplitPane.vue'
 import FileTree from '@/components/FileTree.vue'
 import DocDetail from '@/components/DocDetail.vue'
 import ExportBar from '@/components/ExportBar.vue'
-import { store, loadTree } from '@/store'
+import { store, loadTree, runSearch, visibleTree, selectMatches, humanBytes } from '@/store'
 
 onMounted(loadTree)
 
 const detailTitle = computed(() =>
   store.detail?.node.mode === 'meeting' ? 'Meeting' : 'File')
 const barLabel = computed(() => store.detail?.node.name ?? 'viewer')
+
+function onSearch(e: Event) {
+  runSearch((e.target as HTMLInputElement).value)
+}
 </script>
 
 <template>
   <div class="app">
     <header class="topbar">
       <span class="brand">doocus</span>
-      <span v-if="store.counts.total" class="counts">
-        {{ store.counts.total }} files · {{ store.counts.extracted }} extracted ·
-        {{ store.counts.link }} linked · {{ store.counts.meeting }} meetings
-      </span>
-      <span class="spacer" />
+
+      <div class="search">
+        <input
+          class="search-input"
+          type="search"
+          :value="store.query"
+          placeholder="Search transcripts, documents, files…"
+          @input="onSearch"
+        />
+        <span v-if="store.query" class="search-stats">
+          <template v-if="store.searching">searching…</template>
+          <template v-else>
+            {{ store.searchStats.count }} files · {{ humanBytes(store.searchStats.bytes) }}
+            <button class="pkg" :disabled="!store.searchStats.count" title="Select matches for a package" @click="selectMatches">
+              → package
+            </button>
+          </template>
+        </span>
+      </div>
+
       <ExportBar />
     </header>
 
     <main class="body">
       <div v-if="store.error" class="err">{{ store.error }}</div>
 
-      <!-- both expanded: resizable split -->
       <SplitPane v-else-if="!store.treeCollapsed && !store.detailCollapsed"
                  direction="vertical" :initial-size="0.9" :min="0.2" :max="4">
         <template #first>
           <Panel title="Tree">
             <template #actions><button class="chev" title="Collapse tree" @click="store.treeCollapsed = true">▴</button></template>
-            <FileTree :items="store.tree" />
+            <FileTree :items="visibleTree" />
           </Panel>
         </template>
         <template #second>
@@ -46,14 +64,13 @@ const barLabel = computed(() => store.detail?.node.name ?? 'viewer')
         </template>
       </SplitPane>
 
-      <!-- one or both collapsed: stack of panels + bars -->
       <div v-else class="stack">
         <button v-if="store.treeCollapsed" class="bar" title="Expand tree" @click="store.treeCollapsed = false">
           ▾ <span>Tree · {{ store.counts.total }} files</span>
         </button>
         <Panel v-else title="Tree" class="grow">
           <template #actions><button class="chev" title="Collapse tree" @click="store.treeCollapsed = true">▴</button></template>
-          <FileTree :items="store.tree" />
+          <FileTree :items="visibleTree" />
         </Panel>
 
         <Panel v-if="!store.detailCollapsed" :title="detailTitle" class="grow">
@@ -75,9 +92,16 @@ const barLabel = computed(() => store.detail?.node.name ?? 'viewer')
   padding: var(--space-2) var(--space-3);
   background: var(--surface-1); border-bottom: var(--panel-border); flex-shrink: 0;
 }
-.brand { font-weight: 700; letter-spacing: 0.02em; }
-.counts { color: var(--text-secondary); font-size: var(--font-size-sm); }
-.spacer { flex: 1; }
+.brand { font-weight: 700; letter-spacing: 0.02em; flex-shrink: 0; }
+.search { flex: 1; display: flex; align-items: center; justify-content: center; gap: var(--space-2); }
+.search-input {
+  width: 100%; max-width: 520px;
+  padding: var(--space-1) var(--space-3);
+  background: var(--surface-2); border: var(--panel-border); border-radius: var(--panel-radius);
+  color: var(--text-primary);
+}
+.search-stats { color: var(--text-secondary); font-size: var(--font-size-sm); white-space: nowrap; }
+.pkg { padding: 1px var(--space-2); }
 .body { flex: 1; min-height: 0; padding: var(--space-2); }
 .err { color: var(--status-error, #e0a030); padding: var(--space-4); }
 .stack { display: flex; flex-direction: column; height: 100%; gap: var(--space-2); }
diff --git a/ui/doocus-app/src/components/FileTree.vue b/ui/doocus-app/src/components/FileTree.vue
index b9d700d..f2e7b11 100644
--- a/ui/doocus-app/src/components/FileTree.vue
+++ b/ui/doocus-app/src/components/FileTree.vue
@@ -6,6 +6,11 @@ defineProps<{ items: TreeItem[]; depth?: number }>()
 const MODE_BADGE: Record<string, string> = {
   extracted: 'ext', meeting: 'mtg', link: 'link',
 }
+
+// While searching, the tree is pruned to matches — keep every folder open.
+function folderCollapsed(path: string): boolean {
+  return !store.query && store.collapsed.has(path)
+}
 </script>
 
 <template>
@@ -14,10 +19,10 @@ const MODE_BADGE: Record<string, string> = {
       <!-- folder -->
       <template v-if="it.dir">
         <div class="row folder" :style="{ paddingLeft: (depth ?? 0) * 14 + 8 + 'px' }" @click="toggleFolder(it.path)">
-          <span class="twisty">{{ store.collapsed.has(it.path) ? '▸' : '▾' }}</span>
+          <span class="twisty">{{ folderCollapsed(it.path) ? '▸' : '▾' }}</span>
           <span class="fname">{{ it.name }}</span>
         </div>
-        <FileTree v-show="!store.collapsed.has(it.path)" :items="it.children!" :depth="(depth ?? 0) + 1" />
+        <FileTree v-show="!folderCollapsed(it.path)" :items="it.children!" :depth="(depth ?? 0) + 1" />
       </template>
 
       <!-- file -->
diff --git a/ui/doocus-app/src/store.ts b/ui/doocus-app/src/store.ts
index c2359f9..cc03a19 100644
--- a/ui/doocus-app/src/store.ts
+++ b/ui/doocus-app/src/store.ts
@@ -66,6 +66,11 @@ interface State {
   detailCollapsed: boolean // bottom viewer collapsed to a bar
   targetKey: string
   error: string
+
+  query: string
+  matches: Set<string> | null   // null = not searching; else the matched paths
+  searching: boolean
+  searchStats: { count: number; bytes: number }
 }
 
 export const store = reactive<State>({
@@ -82,8 +87,50 @@ export const store = reactive<State>({
   detailCollapsed: false,
   targetKey: TARGETS[0].key,
   error: '',
+
+  query: '',
+  matches: null,
+  searching: false,
+  searchStats: { count: 0, bytes: 0 },
 })
 
+let searchTimer: ReturnType<typeof setTimeout> | null = null
+
+/** Search the cached text (transcripts, extracted docs, raw files) and prune the
+ *  tree to matches. Debounced; reliability over speed (server reads full text). */
+export function runSearch(q: string): void {
+  store.query = q
+  if (searchTimer) clearTimeout(searchTimer)
+  if (!q.trim()) {
+    store.matches = null
+    store.searching = false
+    store.searchStats = { count: 0, bytes: 0 }
+    return
+  }
+  store.searching = true
+  searchTimer = setTimeout(async () => {
+    try {
+      const res = await fetch(`/api/search?q=${encodeURIComponent(q)}`)
+      if (!res.ok) return
+      const d = await res.json()
+      if (store.query !== q) return // a newer query superseded this one
+      store.matches = new Set<string>(d.matches ?? [])
+      store.searchStats = { count: d.count ?? 0, bytes: d.bytes ?? 0 }
+    } finally {
+      if (store.query === q) store.searching = false
+    }
+  }, 250)
+}
+
+/** Tree pruned to search matches (folders auto-expand while searching). */
+export const visibleTree = computed(() =>
+  store.matches ? buildTree(store.files.filter((f) => store.matches!.has(f.path))) : store.tree)
+
+/** Put the current match set into the package selection (one package for now). */
+export function selectMatches(): void {
+  if (store.matches) store.selected = new Set(store.matches)
+}
+
 export function toggleFolder(path: string): void {
   if (store.collapsed.has(path)) store.collapsed.delete(path)
   else store.collapsed.add(path)