feat: Add real-time text search filter on pipeline admin page

Filters video list by filename or creator name as you type. Works
alongside the existing status and creator dropdown filters. Includes
a clear button when text is entered.

frontend/src/App.css

@@ -3387,6 +3387,52 @@ a.app-footer__repo:hover {
   outline-offset: 1px;
 }
 
+/* ── Pipeline Search ──────────────────────────────────────────────────────── */
+
+.pipeline-search {
+  position: relative;
+  flex: 1;
+  min-width: 180px;
+  max-width: 320px;
+}
+
+.pipeline-search__input {
+  width: 100%;
+  padding: 0.4rem 2rem 0.4rem 0.75rem;
+  border-radius: 6px;
+  border: 1px solid var(--color-border);
+  background: var(--color-surface);
+  color: var(--color-text);
+  font-size: 0.85rem;
+}
+
+.pipeline-search__input:focus {
+  outline: 2px solid var(--color-accent);
+  outline-offset: 1px;
+}
+
+.pipeline-search__input::placeholder {
+  color: var(--color-text-muted);
+}
+
+.pipeline-search__clear {
+  position: absolute;
+  right: 0.4rem;
+  top: 50%;
+  transform: translateY(-50%);
+  background: none;
+  border: none;
+  color: var(--color-text-muted);
+  cursor: pointer;
+  font-size: 0.8rem;
+  padding: 0.2rem;
+  line-height: 1;
+}
+
+.pipeline-search__clear:hover {
+  color: var(--color-text);
+}
+
 /* ── Checkbox in video rows ───────────────────────────────────────────────── */
 
 .pipeline-video__checkbox {

frontend/src/pages/AdminPipeline.tsx

@@ -749,6 +749,7 @@ export default function AdminPipeline() {
   const [debugMode, setDebugModeState] = useState<boolean | null>(null);
   const [creators, setCreators] = useState<{ name: string; slug: string }[]>([]);
   const [creatorFilter, setCreatorFilter] = useState<string | null>(null);
+  const [searchQuery, setSearchQuery] = useState("");
   const [selectedIds, setSelectedIds] = useState<Set<string>>(new Set());
   const [bulkProgress, setBulkProgress] = useState<BulkProgress | null>(null);
   const [bulkLog, setBulkLog] = useState<BulkLogEntry[]>([]);
@@ -763,6 +764,10 @@ export default function AdminPipeline() {
   const filteredVideos = videos.filter((v) => {
     if (activeFilter !== null && v.processing_status !== activeFilter) return false;
     if (creatorFilter !== null && v.creator_name !== creatorFilter) return false;
+    if (searchQuery) {
+      const q = searchQuery.toLowerCase();
+      if (!v.filename.toLowerCase().includes(q) && !v.creator_name.toLowerCase().includes(q)) return false;
+    }
     return true;
   });
 
@@ -857,7 +862,7 @@ export default function AdminPipeline() {
   // Clear selection when filters change
   useEffect(() => {
     setSelectedIds(new Set());
-  }, [activeFilter, creatorFilter]);
+  }, [activeFilter, creatorFilter, searchQuery]);
 
   const handleTrigger = async (videoId: string) => {
     setActionLoading(videoId);
@@ -1038,6 +1043,24 @@ export default function AdminPipeline() {
                 </select>
               </div>
             )}
+            <div className="pipeline-search">
+              <input
+                type="text"
+                className="pipeline-search__input"
+                placeholder="Filter by filename or creator…"
+                value={searchQuery}
+                onChange={(e) => setSearchQuery(e.target.value)}
+              />
+              {searchQuery && (
+                <button
+                  className="pipeline-search__clear"
+                  onClick={() => setSearchQuery("")}
+                  aria-label="Clear search"
+                >
+                  ✕
+                </button>
+              )}
+            </div>
           </div>
 
           {/* Bulk toolbar */}