## 1. Ticker API and implementation

- [x] 1.1 Remove `start()` and `stop()` from `TickerService` and document the lifecycle-free consumer contract.
- [x] 1.2 Keep `TickerServiceImpl.start()` as `NenjimProcess.start()`, remove its public normal stop operation, and preserve private failed-start source cleanup.
- [x] 1.3 Confirm Hub construction, Registry resolution, process startup, and latest-price behavior remain unchanged.

## 2. Specification and documentation

- [x] 2.1 Update the canonical `assetaz-ticker-service` capability to distinguish service queries, Hub-owned startup, and failed-start rollback.
- [x] 2.2 Update Nenjim architecture, public, terminology, and relevant JavaDoc descriptions consistently.

## 3. Verification

- [x] 3.1 Run strict OpenSpec validation and archive the completed change into the canonical specifications.
- [x] 3.2 Run the complete Gradle build and inspect the final diff for lifecycle leaks or unintended behavior changes.