fix(session-ingest): delay queue retries safely

[johnnyeric]

Summary

• Add a 60s delay before retrying failed session-ingest queue messages to reduce immediate pressure on hot Durable Objects.
• Preserve session serving order under delayed retries by scanning persisted messages/parts by ingested_at with SQLite id as a tie-breaker.
• Keep metrics ordering aligned with ingest time rather than delayed processing/insertion order.

Validation

• pnpm --filter cloudflare-session-ingest exec vitest run src/queue-consumer.test.ts src/dos/SessionIngestDO.test.ts src/dos/session-ingest-history-budget.test.ts
• pnpm --filter cloudflare-session-ingest typecheck
• scripts/lint-all.sh

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

Incremental review (new commits since 41be1d8) confirms the previously-noted non-blocking concern has been addressed: a composite index (ingested_at, id) is now created via a new Drizzle migration (0002_watery_venus.sql) and declared in sqlite-schema.ts, aligning the cursor-based scan with proper index coverage. No new issues found.

Files Reviewed (5 files — incremental)

• services/session-ingest/drizzle/0002_watery_venus.sql ✓ (generated migration — index correct)
• services/session-ingest/drizzle/meta/0002_snapshot.json ✓ (generated snapshot)
• services/session-ingest/drizzle/meta/_journal.json ✓ (generated journal entry)
• services/session-ingest/drizzle/migrations.js ✓ (migration registered)
• services/session-ingest/src/db/sqlite-schema.ts ✓ (index declaration matches migration)

Previously reviewed (unchanged):

• services/session-ingest/src/dos/SessionIngestDO.ts
• services/session-ingest/src/dos/SessionIngestDO.test.ts
• services/session-ingest/src/queue-consumer.ts
• services/session-ingest/src/queue-consumer.test.ts

---

_{Reviewed by claude-4.6-sonnet-20260217 · 228,526 tokens}

_{Review guidance: REVIEW.md from base branch main}

[iscekic]

One finding from review.