feat(pipeline): search the render queue by shot or client code

A search box above the exports table matches any part of the shot code or
client code, case-insensitively, so "UNG_114" lists a whole episode. It is
applied server-side (the table is paged there), debounced, and scopes the
summary counts too; combines with the project and status filters.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/api/render/queue/route.ts

@@ -7,7 +7,7 @@ import { listExports } from "@/lib/render-pipeline/exports";
 // ── GET /api/render/queue (E21) ──────────────────────────────────────────────
 //
 // Exports list for the Render Queue page. Optional filters: projectId,
-// episode, status; standard pagination. Defaults to all statuses so the queue
+// episode, status, q (shot/client code search); standard pagination. Defaults to all statuses so the queue
 // page can show history too — the UI filters live states client-side.
 
 export async function GET(req: NextRequest) {
@@ -19,6 +19,7 @@ export async function GET(req: NextRequest) {
       projectId: searchParams.get("projectId") ?? undefined,
       episode: searchParams.get("episode") ?? undefined,
       shotId: searchParams.get("shotId") ?? undefined,
+      search: searchParams.get("q")?.slice(0, 100) || undefined,
       status:
         status && (Object.values(ExportStatus) as string[]).includes(status)
           ? (status as ExportStatus)