feat(api): add personal API tokens and enhance webhook integration UI

- Add ApiToken model with SHA-256 hashed storage and usage tracking
- Create API token CRUD endpoints (POST/GET/DELETE /api/api-tokens/)
- Add Bearer token authentication to require_login decorator
- Exempt Bearer-authenticated requests from CSRF validation
- Add API tokens management page with create/revoke/copy UI
- Enhance webhook integration type with detailed explanation and code snippets
- Add navigation links (desktop + mobile) to API tokens page
- Include 19 tests covering CRUD, auth resolution, and utility functions
- Create migration 024_add_api_tokens

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/views/api_tokens.py

@@ -0,0 +1,24 @@
+"""View route for the API Tokens management page.
+
+Renders the ``api_tokens.html`` template where users can create, view,
+and revoke their personal API tokens for programmatic access.
+"""
+
+import logging
+
+from fastapi import APIRouter, Request
+
+from app.views.base import require_login, templates
+
+logger = logging.getLogger(__name__)
+router = APIRouter()
+
+
+@router.get("/api-tokens")
+@require_login
+async def api_tokens_page(request: Request):
+    """Render the API Tokens management page."""
+    return templates.TemplateResponse(
+        "api_tokens.html",
+        {"request": request, "page_title": "API Tokens"},
+    )