test: add test suite with 65 tests, 73% coverage

- Unit tests: password hashing, notification providers, webhook field parsing
- Integration tests: auth routes (register/login/confirm-email/logout),
  invite flow, Evotor webhooks (/user/create, /user/verify, /user/token),
  admin panel (access control, activate/suspend/delete/reset-password)
- conftest: SQLite in-memory engine, transactional sessions, factory-boy
  factories (UserFactory with UserRoleEnum variants)
- Fix bcrypt: replace passlib (broken on Python 3.14 + bcrypt 5.x) with
  direct bcrypt calls; drop passlib from requirements.txt
- Fix datetime.utcnow() deprecation across routes and tests
- Fix Jinja2 TemplateResponse signature (request as first positional arg)
- Add coverage config to pyproject.toml

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/routes/auth.py

@@ -19,7 +19,7 @@ router = APIRouter()
 def _render(request: Request, template: str, ctx: dict) -> HTMLResponse:
     ctx["request"] = request
     ctx.setdefault("jivosite_widget_id", settings.JIVOSITE_WIDGET_ID)
-    return templates.TemplateResponse(template, ctx)
+    return templates.TemplateResponse(ctx.pop("request"), template, ctx)
 
 
 @router.get("/register")