Admins could remove the admin group from, deactivate, or delete the last
active admin, locking the system out of all administration. Add a
count_active_admins() repo method and a _is_last_active_admin() guard, and
block all three operations when they would leave zero active admins.
Refs: porchlight-yq7
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Admin credential deletion removed password/WebAuthn credentials with no
last-credential check, so an admin could delete a user's only credential and
lock them out. Use the atomic delete_*_if_not_last repo methods; on refusal
re-render the credentials section unchanged with an explanatory alert.
Refs: porchlight-lg7
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Use Annotated[str, Form()] for FastAPI dependencies (FAST002)
- Add missing type annotations across src/ and tests/ (ANN001/003/201/202)
- Reduce function arguments via request.form() reads (PLR0913)
- Combine return paths to reduce return statements (PLR0911)
- Use anyio.Path for async-safe filesystem operations (ASYNC240)
- Extract constants, helpers, and dict comprehensions for clarity
- Move inline imports to top-level (PLC0415)
- Use raw strings for regex match patterns (RUF043)
- Fix redundant get_session_user call in delete_user (not-iterable)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The CSRF middleware added to main after the admin-pages branch was
created caused all admin test POSTs/DELETEs to be rejected. Add
get_csrf_token() calls and X-CSRF-Token headers to login helpers and
all mutation requests, matching the pattern used by other tests.
