Adds one post creation path for roots and replies, recursive thread loading, body-only updates, root listings, and root-only voting across PostgreSQL and the in-memory store.
Co-authored-by: codegirl-007 <s.raide@gmail.com>
Switch avatar resize to ApproxBiLinear, cap hunt/profile/admin list queries, drop redundant admin/profile lookups, dedupe CI on app PRs, and refresh stale todo.md notes.
Introduce a Store interface with Postgres and in-memory backends, cover mutations/CSRF/session rotation without Postgres, bound avatar decode dimensions, add truncate/prepareAvatar unit tests, and run go test -race in CI.
codegirl007