docs: web comments say what the app does, not how it came to be (#6277)

Rewrites the web app's comments to rule 32. Task, milestone, rule and
spec ids are gone; regression stories are restated as the trap they
guard (public auth routes, the menu's stopPropagation, universal loads
under adapter-static, metric deltas with their margin). Flutter and
Tauri mentions now name the Android app or a native shell, operator
quotes and dates are dropped, and one library's counts no longer
appear outside test fixtures. Verified with a TypeScript-scanner token
comparison (template literals and regex literals re-scanned): only
comment text changed.

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

web/src/lib/api/catalogue.ts

@@ -3,8 +3,8 @@ import { api } from './client';
 import { qk } from './queries';
 import type { CatalogueSearchResult, RequestKind } from './types';
 
-// searchCatalogue asks MusicBrainz through Minstrel's release catalogue
-// (M502 #5519). URLSearchParams handles encoding (spaces, quotes,
+// searchCatalogue asks MusicBrainz through Minstrel's release catalogue.
+// URLSearchParams handles encoding (spaces, quotes,
 // ampersands) so callers can pass q raw.
 export async function searchCatalogue(
   q: string,