## ADDED Requirements

### Requirement: Run control channel is lightweight
The run executor SHALL use a lightweight control channel for hello, heartbeat, capability reporting, version reporting, and capacity reporting only.

#### Scenario: Run starts
- **WHEN** run starts and reaches the platform
- **THEN** it MUST register through hello and report capabilities before accepting jobs

#### Scenario: File transfer is active
- **WHEN** run is uploading or downloading large artifacts
- **THEN** control heartbeats MUST remain independent from artifact transfer progress

### Requirement: Job channel supports lifecycle semantics
The run executor SHALL support job claim, ack, progress, result, cancel, and reconcile semantics for server lifecycle, config, database, backup, and plugin-triggered work.

#### Scenario: Job accepted
- **WHEN** run accepts a job
- **THEN** it MUST return a structured ack before execution and terminal result after execution

#### Scenario: Run restarts during job
- **WHEN** run restarts or reconnects after accepting a job
- **THEN** the platform MUST be able to request reconciliation using job identity or idempotency identity

### Requirement: Logs use durable ingest
Run SHALL collect server logs into a local spool and upload compressed batches with stream identity, monotonic sequence range, checksum, and acknowledgement handling.

#### Scenario: Platform unavailable
- **WHEN** platform log ingest is temporarily unavailable
- **THEN** run MUST retain unacknowledged log batches locally and retry without losing sequence continuity

#### Scenario: User transfers files while logs are active
- **WHEN** artifact transfer is consuming bandwidth
- **THEN** log flush MUST keep priority over artifact chunks so historical logs continue to advance

### Requirement: Artifact transfer is isolated
Run SHALL transfer files through an artifact channel with chunking, checksums, resume support, concurrency limits, and throttling separate from logs and control.

#### Scenario: Plugin writes a config file
- **WHEN** a plugin asks the platform to write a config file
- **THEN** run MUST receive a scoped job that references an artifact or bounded inline content and MUST write through a safe temp-and-replace flow

#### Scenario: Large file download active
- **WHEN** a large file download is active
- **THEN** job ack/result and log batch upload MUST NOT wait behind all artifact chunks

### Requirement: Game client bridge is optional and separate
The system SHALL support an optional game client bridge channel for games that require in-game command execution or structured snapshots, but it MUST remain separate from run lifecycle and log ingestion channels.

#### Scenario: Game needs in-game command bridge
- **WHEN** a game management plugin declares that a game needs an in-game client bridge
- **THEN** the platform MUST route game command polling and snapshot reporting through the client bridge contract rather than the run artifact or log channels