## 1. Log Contracts

- [x] 1.1 Add typed run log ingest protocol payloads in `run/protocol` for entries, batch ingest, acknowledgements, and stream cursors.
- [x] 1.2 Add matching platform DTO/domain contracts and conversion helpers for log batch ingest and query.
- [x] 1.3 Add validation rules for bounded log batches, stream identity, sequence ranges, checksum, and query limits.

## 2. Platform Log Ingest

- [x] 2.1 Extend platform service behavior to ingest contiguous batches, acknowledge duplicates, reject out-of-order/conflicting batches, update `LogStream.LatestSeq`, and query entries after a cursor.
- [x] 2.2 Implement platform log ingest/query HTTP routes using named DTOs and service methods.
- [x] 2.3 Add platform service/API tests for accepted batches, duplicate ack, out-of-order rejection, missing stream, and cursor query.

## 3. Run Log Spool And Client

- [x] 3.1 Implement a run-side local spool abstraction that writes pending batches to disk, lists them for retry, and removes acknowledged ranges.
- [x] 3.2 Extend `run/api.PlatformClient` with a typed log batch ingest method.
- [x] 3.3 Add run spool/client tests for retry retention, acknowledgement cleanup, request path, JSON payload, response decoding, and platform error handling.

## 4. Documentation

- [x] 4.1 Update run and platform protocol/route documentation to mark log batch ingest/query implemented and keep control/job/artifact/game-client channels separate.

## 5. Verification

- [x] 5.1 Run `go test ./...` from `platform/` and record evidence.
- [x] 5.2 Run `go test ./...` from `run/` and record evidence.
- [x] 5.3 Run `scripts/check-structure.sh` and record evidence.
- [x] 5.4 Run `openspec validate implement-log-ingest-pipeline --strict` and record evidence.

## Evidence

- 2026-07-03: `go test ./...` from `platform/` passed.
- 2026-07-03: `go test ./...` from `run/` passed.
- 2026-07-03: `scripts/check-structure.sh` passed with `structure check passed`.
- 2026-07-03: `openspec validate implement-log-ingest-pipeline --strict` passed with `Change 'implement-log-ingest-pipeline' is valid`.