feat: usage quota visualization in AI settings

No user-facing view of AI-call/recipe/storage usage existed — only an
admin-only per-user panel. Adds the same numbers, with progress bars
against the user's actual tier limits (read fresh from the DB, not
the cached session), to Settings > AI.

v0.40.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "epicure",
-  "version": "0.39.0",
+  "version": "0.40.0",
   "private": true,
   "scripts": {
     "dev": "pnpm --filter web dev",