docs(todo): mark composable flow + slide scripts done; add event_file cfg_json backend task

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

documentation/TODO__Agents.md

@@ -5,11 +5,10 @@
 ## 🔴 CMSC Charlotte — May 27 (Presentation Management)
 **Drive down:** May 25 | **Setup:** May 26 morning | **Show:** May 27+
 
-- [ ] **[Launcher] Composable open flow** — refactor `handle_open_file()` to use
-  `copy_from_cache_to_temp` + `run_osascript` / `run_cmd` directly instead of the all-in-one
-  `launch_from_cache`. Finer error handling at each step.
-- [ ] **[Launcher] Slide control scripts in Svelte config** — Move AppleScript one-liners from
-  Electron to device config or Svelte constants.
+- [x] **[Launcher] Composable open flow** — `handle_open_file()` uses `copy_from_cache_to_temp` +
+  `run_osascript` / `run_cmd` directly with per-step error handling. Complete.
+- [x] **[Launcher] Slide control scripts in Svelte config** — AppleScript post_scripts live in
+  `ae_launcher__default_launch_profiles.ts`. VLC focus-stealing fix applied. Complete.
 - [ ] **[Launcher] `kill_processes` target list in config** — Implement UI for manual "Kill Apps"
   button and auto-cleanup on file open.
 - [ ] **[Launcher] End-to-end test on macOS** — test pptx and key opens on a real podium Mac.
@@ -79,6 +78,12 @@ The app uses `svelte-persisted-store` (coarse reactivity). Migration target: rep
 
 ## ⚙️ DevOps & Backend
 
+- [ ] **[Backend] `event_file` — add `cfg_json` column (post-CMSC)** — The per-file display
+  override currently uses a localStorage workaround (`$events_loc.launcher.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`.
 - [ ] **[Backend] Re-add `Access-Control-Allow-Private-Network: true` CORS header.**
 - [ ] **[DevOps] Nginx caching** — Investigate `index.html` cache-pickup issues.
 - [ ] **[DevOps] Simplify Dockerfile env file selection** — Use plain `.env` instead of `BUILD_MODE`.