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/@smithy/util-stream/dist-cjs/checksum/ChecksumStream.js

@@ -0,0 +1,53 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ChecksumStream = void 0;
+const util_base64_1 = require("@smithy/util-base64");
+const stream_1 = require("stream");
+class ChecksumStream extends stream_1.Duplex {
+    expectedChecksum;
+    checksumSourceLocation;
+    checksum;
+    source;
+    base64Encoder;
+    constructor({ expectedChecksum, checksum, source, checksumSourceLocation, base64Encoder, }) {
+        super();
+        if (typeof source.pipe === "function") {
+            this.source = source;
+        }
+        else {
+            throw new Error(`@smithy/util-stream: unsupported source type ${source?.constructor?.name ?? source} in ChecksumStream.`);
+        }
+        this.base64Encoder = base64Encoder ?? util_base64_1.toBase64;
+        this.expectedChecksum = expectedChecksum;
+        this.checksum = checksum;
+        this.checksumSourceLocation = checksumSourceLocation;
+        this.source.pipe(this);
+    }
+    _read(size) { }
+    _write(chunk, encoding, callback) {
+        try {
+            this.checksum.update(chunk);
+            this.push(chunk);
+        }
+        catch (e) {
+            return callback(e);
+        }
+        return callback();
+    }
+    async _final(callback) {
+        try {
+            const digest = await this.checksum.digest();
+            const received = this.base64Encoder(digest);
+            if (this.expectedChecksum !== received) {
+                return callback(new Error(`Checksum mismatch: expected "${this.expectedChecksum}" but received "${received}"` +
+                    ` in response header "${this.checksumSourceLocation}".`));
+            }
+        }
+        catch (e) {
+            return callback(e);
+        }
+        this.push(null);
+        return callback();
+    }
+}
+exports.ChecksumStream = ChecksumStream;