KmpTaskWorker

WorkManager CoroutineWorker that bridges the Android scheduling system into the KMPWorker execution model.

Lifecycle per execution:

1. Reads taskId + retry policy from inputData

2. Checks if max retries exhausted — returns Result.failure if so

3. Emits TaskState.Running()

4. Builds TaskExecutionContext with taskId, retryCount, payload, tags

5. Invokes registered handler via TaskRegistry.execute

6. Success → emits TaskState.Success → returns Result.success

7. Failure → checks retry policy → Result.retry or Result.failure