fix(build): rename npmextra config to .smartconfig and refresh build metadata

readme.md

@@ -589,6 +589,26 @@ Get connection details for S3-compatible clients. Returns:
 | `accessSecret` | `string` | Secret key from first configured credential |
 | `useSsl` | `boolean` | Always `false` (plain HTTP) |
 
+#### `getStorageStats(): Promise<IStorageStats>`
+
+Read cached logical bucket and object totals from the Rust runtime without issuing S3 list calls.
+
+#### `listBucketSummaries(): Promise<IBucketSummary[]>`
+
+Get per-bucket logical object counts and total payload sizes.
+
+#### `listCredentials(): Promise<IStorageCredential[]>`
+
+Return the currently active runtime credential set.
+
+#### `replaceCredentials(credentials: IStorageCredential[]): Promise<void>`
+
+Atomically replace the active runtime credential set without restarting the server.
+
+#### `getClusterHealth(): Promise<IClusterHealth>`
+
+Read the Rust core's current cluster, drive, quorum, and repair health snapshot. Standalone mode returns `{ enabled: false }`.
+
 ## Architecture
 
 smartstorage uses a **hybrid Rust + TypeScript** architecture:
@@ -622,7 +642,7 @@ smartstorage uses a **hybrid Rust + TypeScript** architecture:
 
 **Why Rust?** The original TypeScript implementation had critical perf issues: OOM on multipart uploads (parts buffered in memory), double stream copying, file descriptor leaks on HEAD requests, full-file reads for range requests, and no backpressure. The Rust binary solves all of these with streaming I/O, zero-copy, and direct `seek()` for range requests.
 
-**IPC Protocol:** TypeScript spawns the `ruststorage` binary with `--management` and communicates via newline-delimited JSON over stdin/stdout. Commands: `start`, `stop`, `createBucket`, `clusterStatus`.
+**IPC Protocol:** TypeScript communicates with the `ruststorage` binary over newline-delimited JSON via stdin/stdout. The current management commands are `start`, `stop`, `createBucket`, `getStorageStats`, `listBucketSummaries`, `listCredentials`, `replaceCredentials`, and `getClusterHealth`.
 
 ### S3-Compatible Operations