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/middleware/csrf.py

@@ -4,8 +4,8 @@ from __future__ import annotations
 import secrets
 
 from starlette.middleware.base import BaseHTTPMiddleware
-from starlette.responses import JSONResponse
 from starlette.requests import Request
+from starlette.responses import JSONResponse
 
 
 class CSRFMiddleware(BaseHTTPMiddleware):
@@ -16,7 +16,7 @@ class CSRFMiddleware(BaseHTTPMiddleware):
     """
 
     SAFE_METHODS = {"GET", "HEAD", "OPTIONS"}
-    EXCLUDED_PATHS = {"/api/webhook", "/api/v1", "/auth/callback", "/auth/register", "/auth/local-login", "/api/user", "/board/api/pages", "/board/api/favorites", "/api/workspace", "/api/local-workspace", "/api/settings", "/db/", "/workspace", "/api/frontend-error", "/api/admin", "/api/gitea", "/api/github", "/api/pages", "/api/recents", "/api/csrf-token", "/api/notifications", "/api/comments", "/api/agent", "/api/automations", "/workspace/automations"}
+    EXCLUDED_PATHS = {"/api/webhook", "/api/v1", "/auth/callback", "/auth/register", "/auth/local-login", "/api/user", "/board/api/pages", "/board/api/favorites", "/api/workspace", "/api/local-workspace", "/api/settings", "/db/", "/workspace", "/api/frontend-error", "/api/admin", "/api/gitea", "/api/github", "/api/pages", "/api/recents", "/api/csrf-token", "/api/notifications", "/api/comments", "/api/agent", "/api/automations", "/workspace/automations", "/api/onboarding"}
 
     async def dispatch(self, request: Request, call_next):
         # Webhook receiver, OAuth callback, and internal API are exempt