Addresses the security-audit findings on top of the admin feature stack:
M1: /admin/mangas/:id/chapters now paginates (default limit 200, max 500).
A long-runner with thousands of chapters would otherwise produce a multi-MB
response with that many scalar subqueries per row — admin-only but a real
stall risk on one expand-click. Adds explicit pagination tests for the cap
and offset; frontend renders a "Showing first N of M" hint when the cap
clips the result.
L1: repo::user::set_is_admin renamed to set_is_admin_unchecked with a
doc-comment pointing at admin_safe_set_is_admin for production use. The
short name was a footgun — a future contributor reaching for it would
silently bypass self-protection, the last-admin invariant, and the audit
log. Used only by integration-test setup; production code goes through
the admin_safe_* paths.
CSRF posture: build_session_cookie carries a comment that the
SameSite=Lax default is the project's CSRF defense for state-changing
mutations and breaks the instant anyone adds a side-effecting GET under
/admin/*. Spells out what to do then (Strict + explicit token check).
Test counts: 43 backend admin tests + 12 vitest admin tests all green;
svelte-check 0/0 across 446 files.
Adds an `is_admin` flag on users plus the substrate every later PR in the
admin feature builds on:
- migration 0018 adds the column with default false
- `repo::user::bootstrap_admin` creates or promotes the user named by
`ADMIN_USERNAME` at startup, hashing `ADMIN_PASSWORD` only when the row
is new — never overwriting an existing hash, so an operator can rotate
the admin password via the UI without env-var conflict
- `CurrentSessionUser` extractor accepts only the session cookie;
`RequireAdmin` composes over it and additionally requires
`user.is_admin`. Bearer tokens are intentionally excluded so an
admin's bot token never inherits admin authority (privilege-escalation
surface that bites every "API keys reuse user perms" auth design)
- demotion is instant: `RequireAdmin` re-reads the user row each request
`/api/v1/auth/me` now exposes `is_admin`; no other response embeds
`User`, so no privacy fanout to audit.
