chore(ci): fail closed on missing test Redis in CI and skip the unused pg16 service

[waleedlatif1]

Summary

• Redis-gated suites can't pass by skipping in CI. readTestRedisUrl() returns undefined when TEST_REDIS_URL is unset, and about 29 Redis-gated integration tests then skip. It now throws when CI is set and the var is missing; locally it still skips. The integration job sets TEST_REDIS_URL for all 8 matrix jobs (checks.yml:68), and no other workflow runs integration tests, so CI stays green.
• The pg16 service starts only where it's used. The postgres:16-alpine service container started on all 8 integration jobs, but only push/1 uses it: port 5433 appears only in its step. The other 7 jobs now get an empty image, which GitHub skips.
• Smoke tests that never ran are now live tests. csv-workflow-execution (SIM_HELPERS_SMOKE) and providers/conversation-smoke are whole-file smoke suites gated on env vars no workflow sets. They are renamed to *.live.test.ts, the repo's opt-in layer, and their 20 test-patterns baseline entries are removed.

Not changed: apps/desktop/playwright.config.ts retries once in CI. Logs from 143 recent runs show 8 green desktop runs that passed only on that retry. Switching to failOnFlakyTests before fixing those tests would turn about 6% of runs red. That's a follow-up.

Test plan

• All 8 integration jobs green; push/1 still passes its PostgreSQL 16 step
• check:audits (check:test-patterns)

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[cubic-dev-ai]

No issues found across 7 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

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[greptile-apps]

Confidence Score: 5/5

[High impact] The PR appears safe to merge; no actionable issue was found.

Summary

The PR makes CI integration runs fail when TEST_REDIS_URL is missing, while keeping Redis optional locally.

• CI requires a Redis URL before integration suites can run.
• PostgreSQL 16 starts only for the integration job that tests it.
• Two gated smoke suites run only in live-test mode.

No actionable issues found. This review checked code and configuration; it did not run the suites.

Acknowledged deferral: waleedlatif1 explicitly left desktop retry behavior unchanged. The stated reason is that enabling failOnFlakyTests before fixing flaky tests would turn about 6% of recent runs red.

_{Reviews (1) · Last reviewed commit: "chore(ci): fail closed on missing test R..." · Reviewed by Greptile}