fix: keep only source-map extracted node_modules, exclude pnpm artifacts

Restore node_modules to exact state from cli.js.map extraction:
- Move .ignored/ and .ignored_* files back to original package paths
- Remove pnpm symlinks (replaced by real source-map directories)
- Update .gitignore: only exclude /dist/, .pnpm/, .bin/, .ignored* dirs
- All package dist/ folders are now preserved as part of source-map files

After clone, run `pnpm install` to get pnpm-managed symlinks for building.
The committed node_modules contains the original TypeScript/JS source files
as bundled in cli.js.

claude-code-source/node_modules/@anthropic-ai/sdk/internal/utils/bytes.mjs

@@ -0,0 +1,26 @@
+export function concatBytes(buffers) {
+    let length = 0;
+    for (const buffer of buffers) {
+        length += buffer.length;
+    }
+    const output = new Uint8Array(length);
+    let index = 0;
+    for (const buffer of buffers) {
+        output.set(buffer, index);
+        index += buffer.length;
+    }
+    return output;
+}
+let encodeUTF8_;
+export function encodeUTF8(str) {
+    let encoder;
+    return (encodeUTF8_ ??
+        ((encoder = new globalThis.TextEncoder()), (encodeUTF8_ = encoder.encode.bind(encoder))))(str);
+}
+let decodeUTF8_;
+export function decodeUTF8(bytes) {
+    let decoder;
+    return (decodeUTF8_ ??
+        ((decoder = new globalThis.TextDecoder()), (decodeUTF8_ = decoder.decode.bind(decoder))))(bytes);
+}
+//# sourceMappingURL=bytes.mjs.map