chore(config): retire unused env vars and fully-rolled-out feature flags

[waleedlatif1]

Summary

• Removed 14 env vars that nothing reads: AGENT_INDEXER_URL/_API_KEY, APOLLO_API_KEY, DISCORD_CLIENT_ID/_SECRET, SUPABASE_CLIENT_ID/_SECRET, STRIPE_PRO|TEAM|ENTERPRISE_PRICE_ID, JOB_RETENTION_DAYS, KB_CONFIG_CHUNK_CONCURRENCY, S3_LOGS_BUCKET_NAME, NEXT_PUBLIC_WORKFLOW_COLUMNS_ENABLED
• Retired the tables-v2-api flag: the typed table query route, its requireV2Feature gate, the tables_v2_disabled 403 and the operationAvailability rollout hint are gone. The route is now always available, still behind its normal authorization
• Retired the table-row-ttl flag: TTL columns and the expired-row cleanup are always on. Removed the ttl-availability module, TableRowTtlDisabledError, the prop that carried the flag to the table UI, and TABLE_ROW_TTL from Helm and .env.example
• Retired the credential-groups AppConfig flag. On hosted, an Enterprise plan alone decides access. On self-hosted it's now a credentialGroups enterprise entitlement: off by default, turned on by CREDENTIAL_GROUPS (same var as before) or ENTERPRISE_ENABLED
• Deleted getWorkspaceOrganizationId (its only callers were the removed gates) and dropped the gate-only tests and mocks
• Kept the optional operationAvailability field on the mothership block-detail schema because mothership's contract still declares it

Type of Change

• Chore / cleanup

Testing

• bun run test at the root: all pass (36,595 in apps/sim)
• bun run lint, bun run type-check, bun run check:audits, docs-manifest:check, block-registry check against origin/staging, and CI's env-flag validation block
• I didn't run the TTL cleanup integration tests locally (they need Postgres). I only removed their flag mock and the disabled-feature step

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing (new tests pass the test-audit authoring gate)
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

🤖 Generated with Claude Code

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[cubic-dev-ai]

No issues found across 69 files

Confidence score: 5/5

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

_{Turn on auto-fix | Re-trigger cubic}

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge based on the changes since the previous review and the full-PR rules check.

Summary

Removes unused environment settings and retires three completed feature rollouts.

• Typed table queries and row expiration are always available.
• Credential Groups requires Enterprise on hosted deployments. Self-hosted deployments use CREDENTIAL_GROUPS or ENTERPRISE_ENABLED.
• Removes obsolete gates, tests, and mocks.
• Since the previous review, only the Helm chart version changed, from 1.11.7 to 1.11.8. No actionable issue was found in that change or the full-PR rules check.

_{Reviews (2) · Last reviewed commit: "chore(helm): bump chart version for remo..." · Reviewed by Greptile}

[waleedlatif1]

@greptile

[waleedlatif1]

@cubic-dev-ai review this PR

[cubic-dev-ai]

@cubic-dev-ai review this PR

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[cubic-dev-ai]

No issues found across 70 files

Confidence score: 5/5

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

_{Turn on auto-fix | Re-trigger cubic}