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)

anyclip/client/remove-base-path.ts

@@ -0,0 +1,18 @@
+import { hasBasePath } from './has-base-path'
+
+const basePath = (process.env.__NEXT_ROUTER_BASEPATH as string) || ''
+
+export function removeBasePath(path: string): string {
+  if (process.env.__NEXT_MANUAL_CLIENT_BASE_PATH) {
+    if (!hasBasePath(path)) {
+      return path
+    }
+  }
+
+  // Can't trim the basePath if it has zero length!
+  if (basePath.length === 0) return path
+
+  path = path.slice(basePath.length)
+  if (!path.startsWith('/')) path = `/${path}`
+  return path
+}