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/src/client/components/forbidden.ts

@@ -0,0 +1,33 @@
+import {
+  HTTP_ERROR_FALLBACK_ERROR_CODE,
+  type HTTPAccessFallbackError,
+} from './http-access-fallback/http-access-fallback'
+
+// TODO: Add `forbidden` docs
+/**
+ * @experimental
+ * This function allows you to render the [forbidden.js file](https://nextjs.org/docs/app/api-reference/file-conventions/forbidden)
+ * within a route segment as well as inject a tag.
+ *
+ * `forbidden()` can be used in
+ * [Server Components](https://nextjs.org/docs/app/building-your-application/rendering/server-components),
+ * [Route Handlers](https://nextjs.org/docs/app/building-your-application/routing/route-handlers), and
+ * [Server Actions](https://nextjs.org/docs/app/building-your-application/data-fetching/server-actions-and-mutations).
+ *
+ * Read more: [Next.js Docs: `forbidden`](https://nextjs.org/docs/app/api-reference/functions/forbidden)
+ */
+
+const DIGEST = `${HTTP_ERROR_FALLBACK_ERROR_CODE};403`
+
+export function forbidden(): never {
+  if (!process.env.__NEXT_EXPERIMENTAL_AUTH_INTERRUPTS) {
+    throw new Error(
+      `\`forbidden()\` is experimental and only allowed to be enabled when \`experimental.authInterrupts\` is enabled.`
+    )
+  }
+
+  // eslint-disable-next-line no-throw-literal
+  const error = new Error(DIGEST) as HTTPAccessFallbackError
+  ;(error as HTTPAccessFallbackError).digest = DIGEST
+  throw error
+}