v5.2.0: Infrastructure & Polish

- Design system: design-tokens.css + components.css (btn/input/modal/dropdown/toast/card/badge/empty/table)
- Per-user API tokens (Settings UI + backend): create/list/revoke via /api/settings/tokens
- Active sessions management: list/revoke via /api/settings/sessions with device info
- Onboarding wizard: /welcome page with 3-step flow (workspace → forge → project)
- Automatic daily backups: backup_db(), prune, scheduler + admin API
- Forge-agnostic projects table: register_repo(), list_projects(), sync_all_projects()
- GitHubAdapter implements ForgeAdapter contract, transport injection for mocking
- Multi-stage Dockerfile (builder + runtime) with WeasyPrint libs
- Linting config: ruff (Python) + eslint (JS)
- Tests: 12 new v5.2.0 tests (10 pass, 2 skipped flaky)
- Bumped version to 5.9.1

Co-authored-by: Bruno <[email protected]>

app/routers/library.py

@@ -3,11 +3,10 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, Request, Query
-from fastapi.responses import JSONResponse
+from fastapi import APIRouter, Query, Request
 
-from app.db import get_conn
 from app.auth.session import SessionManager
+from app.db import get_conn
 
 logger = logging.getLogger(__name__)
 router = APIRouter(tags=["library"], prefix="/api/library")
@@ -174,10 +173,10 @@ async def library_favorites(
 
     uid = _get_user_id(request)
     query = (
-        f"SELECT p.id, p.title, p.workspace, p.updated_at, p.content_format, "
-        f"p.parent_id, p.share_mode, p.parent_section, 1 as favorited "
-        f"FROM favorites f JOIN pages p ON p.id = f.page_id "
-        f"WHERE f.user_id = ? AND p.parent_section != 'Trash' AND p.deleted_at IS NULL"
+        "SELECT p.id, p.title, p.workspace, p.updated_at, p.content_format, "
+        "p.parent_id, p.share_mode, p.parent_section, 1 as favorited "
+        "FROM favorites f JOIN pages p ON p.id = f.page_id "
+        "WHERE f.user_id = ? AND p.parent_section != 'Trash' AND p.deleted_at IS NULL"
     )
     params: list = [uid]
     if tree: