chore(backend): strip dead CRUD, keep auth-only surface

apps/backend/app/main.py

@@ -250,10 +250,10 @@ def root() -> HTMLResponse:
       </header>
 
       <main class="container hero">
-        <h1>Minimal, production-ready API starter.</h1>
+        <h1>Auth-only backend.</h1>
         <p>
-          This service exposes health and auth helpers and includes task/project/bookmark modules
-          designed to mirror the existing Firebase payload shape in your web app.
+          This service exposes health and authentication helpers. All tool data lives
+          on the user's device — the desktop app stores it locally, so there are no CRUD endpoints here.
         </p>
 
         <div class="actions">
@@ -264,15 +264,15 @@ def root() -> HTMLResponse:
         <div class="grid">
           <div class="card">
             <h3>Auth</h3>
-            <p>Verify Firebase ID tokens and fetch current user profile.</p>
+            <p>Verify Firebase ID tokens and fetch the current user profile.</p>
           </div>
           <div class="card">
-            <h3>Tasks</h3>
-            <p>Paginated list, status updates, and export/import parity.</p>
+            <h3>Passkeys</h3>
+            <p>WebAuthn register/login and credential management.</p>
           </div>
           <div class="card">
-            <h3>Bookmarks</h3>
-            <p>Folders + bookmarks with upsert import and move/delete actions.</p>
+            <h3>Health</h3>
+            <p>Liveness probe at /api/v1/health.</p>
           </div>
         </div>
       </main>

apps/backend/app/utils/collection_name.py

@@ -1,28 +1,3 @@
 USERS = "users"
-TASKS = "tasks"
-PROJECTS = "projects"
-BOOKMARKS = "bookmarks"
-BOOKMARK_FOLDERS = "bookmark_folders"
-PASSWORD_VAULTS = "password_Vaults"
-PASSWORD_ENTRIES = "password_entries"
-ENV_MANAGER_ENTRIES = "environment_manager_entries"
-API_KEY_VAULT_ENTRIES = "api_key_vault_entries"
-NOTES = "notes"
-NOSQL_CONNECTIONS = "mongodb_connections"
-USER_PREFERENCES = "user_preferences"
-NOSQL_QUERY_HISTORY = "nosql_query_history"
-API_CLIENT_COLLECTIONS = "api_client_collections"
-API_CLIENT_ENVIRONMENTS = "api_client_environments"
-API_CLIENT_HISTORY = "api_client_history"
-API_CLIENT_PUBLIC_MOCKS = "api_client_public_mocks"
-API_CLIENT_WORKSPACES = "api_client_workspaces"
-JSON_FORMATTER_DOCUMENTS = "json_formatter_documents"
-CODE_SNIPPETS = "code_snippets"
-SQL_CONNECTIONS = "sql_connections"
-S3_CONNECTIONS = "s3_connections"
-FEEDBACK = "feedback"
-REDIS_CONNECTIONS = "redis_connections"
 AUDIT_LOG = "audit_log"
 WEBAUTHN_CHALLENGES = "webauthn_challenges"
-WORKSPACES = "workspaces"
-WORKSPACE_MEMBERSHIPS = "workspace_memberships"