Add AnyClip integration tools and extracted source code

- Add authentication scripts with SubtleCrypto password encryption
- Add sourcemap extraction pipeline (update-urls, download-sourcemaps, extract-sources)
- Add Playwright API interception script for monetization endpoints
- Document two-step auth flow with JWT tokens and dual cookies
- Move extracted source from root to anyclip/ directory
- Add project configuration (.env.example, .gitignore, CLAUDE.md)

scripts/download-sourcemaps.ts

@@ -0,0 +1,70 @@
+#!/usr/bin/env bun
+/**
+ * Download sourcemaps for all JS files listed in urls.txt
+ *
+ * Usage:
+ *   bun scripts/update-urls.ts   # First, update urls.txt from build manifest
+ *   bun scripts/download-sourcemaps.ts  # Then download sourcemaps
+ */
+
+import { mkdir } from "fs/promises";
+
+const OUTPUT_DIR = "sourcemaps";
+
+await mkdir(OUTPUT_DIR, { recursive: true });
+
+// Read urls.txt
+const urlsFile = Bun.file("urls.txt");
+if (!(await urlsFile.exists())) {
+  console.error("urls.txt not found. Run 'bun scripts/update-urls.ts' first.");
+  process.exit(1);
+}
+
+const urls = (await urlsFile.text())
+  .split("\n")
+  .map((line) => line.trim())
+  .filter((line) => line && line.includes("/_next/") && line.endsWith(".js"));
+
+console.log(`Found ${urls.length} JS files in urls.txt\n`);
+
+let downloaded = 0;
+let skipped = 0;
+let failed = 0;
+
+for (const jsUrl of urls) {
+  const filename = jsUrl.split("/").pop()!;
+  const mapFile = `${OUTPUT_DIR}/${filename}.map`;
+
+  // Check if already exists
+  const exists = await Bun.file(mapFile).exists();
+  if (exists) {
+    skipped++;
+    continue;
+  }
+
+  const mapUrl = `${jsUrl}.map`;
+
+  try {
+    const response = await fetch(mapUrl);
+    if (response.ok) {
+      const content = await response.text();
+      // Verify it's a valid sourcemap (starts with {)
+      if (content.startsWith("{")) {
+        await Bun.write(mapFile, content);
+        console.log(`✓ ${filename}.map`);
+        downloaded++;
+      } else {
+        failed++;
+      }
+    } else {
+      failed++;
+    }
+  } catch (e) {
+    failed++;
+  }
+}
+
+console.log(`\n✅ Downloaded: ${downloaded}`);
+console.log(`⏭️  Skipped (exists): ${skipped}`);
+console.log(`❌ Failed/No sourcemap: ${failed}`);
+console.log(`\nTotal sourcemaps: ${downloaded + skipped}`);