feat(archive): introduce ts_shared browser-compatible layer, refactor Node-specific tools to wrap/shared implementations, and modernize archive handling

ts_shared/classes.bzip2tools.ts

@@ -0,0 +1,14 @@
+import * as plugins from './plugins.js';
+import { unbzip2Stream } from './bzip2/index.js';
+
+/**
+ * BZIP2 decompression utilities (browser-compatible)
+ */
+export class Bzip2Tools {
+  /**
+   * Get a streaming decompression transform
+   */
+  getDecompressionStream(): plugins.smartstream.SmartDuplex<Uint8Array, Uint8Array> {
+    return unbzip2Stream();
+  }
+}