Add Processor Service documentation and update Agent Memory Index

.claude/agent-memory/ts-node-backend-engineer/MEMORY.md

@@ -1,4 +1,5 @@
 # Agent Memory Index
 
 - [TCP Ingestion Project](project_tcp_ingestion.md) — tcp-ingestion service: tech stack, conventions, ESLint quirks, CRC details
+- [Processor Service](project_processor.md) — processor service: Phase 1 scaffold done, key divergences from tcp-ingestion, test patterns for pool/migrate
 - [User Profile](user_profile.md) — User role and working style

.claude/agent-memory/ts-node-backend-engineer/project_processor.md

@@ -0,0 +1,23 @@
+---
+name: Processor Service
+description: processor service scaffold, conventions, and known test patterns learned during Phase 1 tasks 1.1–1.4
+type: project
+---
+
+Phase 1 tasks 1.1–1.4 landed. Key facts for tasks 1.5–1.11:
+
+**Architecture divergence from tcp-ingestion:**
+- ESLint `import/no-restricted-paths` zone: `src/core/` cannot import `src/domain/` (not `src/adapters/` like tcp-ingestion). `src/domain/` is preemptive for Phase 2.
+- `INSTANCE_ID` defaults to `'processor-1'` (fixed string), not a random UUID prefix. Rationale: deterministic names are better for container environments.
+- `REDIS_CONSUMER_NAME` defaults to `INSTANCE_ID` at runtime (after schema parse), not as a zod schema default — because it depends on `INSTANCE_ID` value.
+
+**Test patterns:**
+- `connectWithRetry` tests: use `maxAttempts=1` for the "calls process.exit(1)" case to avoid fake-timer unhandled rejection noise. The noise occurs when a backoff `setTimeout` resolves after the outer promise has already thrown via process.exit mock.
+- Migration runner tests: `isMigrationApplied` calls `pool.query` (pool-level, not through client). Handlers on client mock do NOT affect EXISTS checks.
+- `vi.mock('node:fs/promises')` pattern used in migrate.test.ts to isolate filesystem reads.
+
+**Why:**
+Phase 1 throughput pipeline. Tasks 1.5–1.8 add consumer/writer/state on top of this foundation.
+
+**How to apply:**
+When implementing 1.5 (Redis consumer), 1.6 (device state), 1.7 (position writer), 1.8 (main wiring) — all imports must use `.js` extension, no path aliases, strict ESM. The `connectWithRetry` pattern from pool.ts should be mirrored for ioredis in consumer.ts.