Add JsonSnapshotStateStore for durable state persistence#4
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Introduce JsonSnapshotStateStore implementing IStateStore to persist state to a JSON file on disk. The class uses an in-memory ConcurrentDictionary for fast access and ensures state survives process restarts by saving changes to a snapshot file. The default file path is %TEMP%/azlocal/state.json, configurable via AzLocal:SnapshotPath. Implemented methods include GetAsync, SetAsync, DeleteAsync, ListAsync, and ExistsAsync, with thread-safe file writes ensured via SemaphoreSlim. Added private helpers for loading and saving state. Includes XML documentation for clarity.
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Introduce JsonSnapshotStateStore implementing IStateStore to persist state to a JSON file on disk. The class uses an in-memory ConcurrentDictionary for fast access and ensures state survives process restarts by saving changes to a snapshot file. The default file path is %TEMP%/azlocal/state.json, configurable via AzLocal:SnapshotPath.
Implemented methods include GetAsync, SetAsync, DeleteAsync, ListAsync, and ExistsAsync, with thread-safe file writes ensured via SemaphoreSlim. Added private helpers for loading and saving state. Includes XML documentation for clarity.