CI: Tier A smoke test script (automated)

[renecannao]

Automated Smoke Tests

Codify all Tier A manual tests into a reproducible script.

Tests (from manual session)

1. Build orchestrator from source
2. Start orchestrator with test config
3. Seed discovery with master instance
4. Wait for topology discovery (3 instances)
5. Verify: GET /api/clusters returns cluster
6. Verify: GET /api/cluster/{alias} returns 3 instances
7. Verify: Web UI returns 200/302
8. Verify: GET /api/v2/clusters returns V2APIResponse envelope
9. Verify: GET /api/v2/status returns status
10. Verify: GET /metrics returns Prometheus metrics with orchestrator_* gauges
11. Verify: GET /health/live returns 200
12. Verify: GET /health/ready returns 200
13. Verify: GET /health/leader returns 200
14. Verify: orchestrator -c proxysql-test connects OK
15. Verify: orchestrator -c proxysql-servers shows servers
16. Verify: GET /api/proxysql/servers returns server list
17. Verify: Static CSS/JS files served correctly

Files

• tests/functional/test-smoke.sh

Acceptance criteria

• Script exits 0 if all tests pass, non-zero on failure
• Each test prints PASS/FAIL with details
• Summary at end with pass/fail count

Depends on #46 (infrastructure).