docs: add multi-select / quick delete to files TODO

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

documentation/TODO__Agents.md

@@ -123,6 +123,7 @@ Sorting baseline is now `build_tmp_sort` (ASC chain, no `.reverse()` on tmp-sort
 - [ ] **[Backend] `event_file` — add `cfg_json` column (post-CMSC)** — The per-file display override currently uses a localStorage workaround (`launcher_loc.current.file_display_overrides`) because `event_file` has no JSON blob column. Proper fix: add `cfg_json` to the `event_file` DB table, expose it through the FastAPI model, then migrate the frontend back to reading/writing the backend field (restoring global/cross-device persistence). Frontend code is in `launcher_file_cont.svelte` — search for `file_display_overrides`.
 - [x] **[Backend] Hosted file delete — V3 CRUD regression fix** — `DELETE /v3/action/event_file/{id}` now handles atomic cleanup (link removal, physical file, hosted_file record). Frontend updated to use this endpoint directly (2026-06-18, commit `5689bfebb`).
 - [x] **[Backend] Hosted file orphan scan endpoint** — `GET /v3/action/hosted_file/orphan_scan` live. `/core/files/` "Check Orphans" updated to use it — single call replaces N+1 per-file link fetches (2026-06-18, commit `5689bfebb`).
+- [ ] **[Files] Multi-select delete + quick delete on `/core/files/`** — Two options to explore: (1) checkbox multi-select with a "Delete Selected" bulk action, (2) a toggle to suppress the per-file confirm dialog for faster single-file cleanup sessions. Useful for clearing orphan backlog after running Check Orphans.
 - [ ] **[Backend] Re-add `Access-Control-Allow-Private-Network: true` CORS header.**
 - [x] **[DevOps] Service worker `skipWaiting` + `clients.claim`** — Root cause of "users see old code / can't reproduce in dev testing": the SW sat in waiting state until all tabs closed. IDAA members leave idaa.org open all day. Fixed 2026-06-03: both calls added to `src/service-worker.js`. See mistake #16 in `BOOTSTRAP__AI_Agent_Quickstart.md`.
 - [ ] **[DevOps] Nginx proxy buffer tuning** — Buffer settings copied from PHP guide; not optimal for Node.js. `proxy_busy_buffers_size` technically exceeds safe limit. Re-examine when enabling compression (now re-enabled) stabilizes.