test(relay): skip 2 PG-dependent admin report/feedback 404 tests when BUZZ_TEST_DATABASE_URL unset

[iroiro147]

Summary

crates/buzz-relay/src/api/admin/mod.rs has two PG-dependent integration tests in mod tests that fail hard when run without a live Postgres, mirroring the exact problem tracked in #4080 for api::media::tests:

• admin::tests::report_detail_rejects_unknown_report — calls test_state() (which eagerly seeds a community via ensure_configured_community, panicking if BUZZ_DATABASE_URL is unset), then asserts a 404 for /reports/{nil-uuid} on the admin host.
• admin::tests::feedback_attachment_rejects_unknown_feedback — same shape, asserts 404 for /feedback/{nil-uuid}/attachments/{hash}.

Both currently fail with a 500 (from a dead PoolTimedOut / connect error surfaced as S3Error-style 500, not the application-level ApiError::not_found) whenever cargo test -p buzz-relay runs in an environment where BUZZ_TEST_DATABASE_URL is not pointing at a live Postgres.

Sibling tests in the same module that assert 403 (admin-host gate, before any DB access) continue to pass — these two are the only ones post-authorize DB call.

Proposed fix

Apply the same #[ignore = "requires a live Postgres: set BUZZ_TEST_DATABASE_URL"] attribute pattern used in crates/buzz-search/tests/fts_integration.rs and already applied to api::media::tests for #4080. Then cargo test -p buzz-relay passes cleanly in PG-less environments and developers opt back into the live-Postgres surface with:

BUZZ_TEST_DATABASE_URL=postgres://buzz:buzz_dev@localhost:5432/buzz \
  cargo test -p buzz-relay -- --include-ignored

Follow-up (out of scope)

Refactoring test_state() to stop eagerly seeding a community (the same DX problem called out in #4080) would let even more admin tests run without PG.

[iroiro147]

Fix up in #4123: applies the same #[ignore = "requires a live Postgres: set BUZZ_TEST_DATABASE_URL"] attribute to report_detail_rejects_unknown_report and feedback_attachment_rejects_unknown_feedback, mirroring the pattern landed for #4080 in api::media::tests.

Verification (PG-less, BUZZ_TEST_DATABASE_URL/BUZZ_DATABASE_URL unset):
cargo test -p buzz-relay --lib admin::tests:: → 28 passed, 0 failed, 2 ignored, 838 filtered out.