refactor(launcher): canonicalize default profiles

documentation/TODO__Agents.md

@@ -22,11 +22,15 @@ guessing defaults.
 - [x] `get_launch_profile()` in `launcher_file_cont.svelte` reads from device config then event config; resolves to a `native_template` string and passes it to `launch_from_cache`
 
 **Svelte-side migration — remaining before May 26:**
-- [ ] **[Launcher] Built-in Svelte default profiles** — move the "known good" pptx/key/pdf
+- [ ] **[Launcher] Built-in Svelte default profiles** — move the built-in presentation/media
   policy objects into a Svelte constants file (e.g. `ae_launcher__default_launch_profiles.ts`).
-  Priority: `get_launch_profile()` already checks device config and event config; add a 3rd
-  fallback to these Svelte defaults before returning `null`. Keep the fallback in Svelte, not
-  in Electron.
+  Use canonical profile names plus extension aliases so the media family does not repeat the
+  same VLC config for every file type. Cover the core macOS set (`pptx`, `ppt`, `key`, `odp`,
+  `pdf`), the media set (`mp4`, `mkv`, `mp3`, and related media types), the Windows /
+  Parallels variants (`pptxwin`, `pptwin`, `odpwin`, `pdfwin`), and the URL/web-based
+  presentation path. Priority: `get_launch_profile()` already checks device config and event
+  config; add a 3rd fallback to these Svelte defaults before returning `null`. Keep the
+  fallback in Svelte, not in Electron.
 - [ ] **[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 (verify copy succeeded before