feat(cli): forward feedback submissions to the backend feedback endpoint (#2003)

* feat(cli): forward feedback submissions to backend endpoint

* fix(cli): truncate feedback fields to backend caps + ack before forwarding

Addresses PR review (via):
- Truncate comment (2000) / cli_version (100) / env (500) to the backend DTO
  caps before POSTing, so a pasted stack trace is forwarded truncated instead
  of rejected with a 422 the best-effort path swallows silently.
- Print "Thanks for the feedback!" before the best-effort forward so the ack
  isn't blocked behind the (bounded) network call.

* fix(cli): type feedback fetch mock

packages/cli/src/utils/submitFeedback.ts

@@ -0,0 +1,40 @@
+import { getPublishApiBaseUrl } from "./publishProject.js";
+
+// Match the backend DTO caps (HyperframesFeedbackRequest). Truncate here so an
+// over-long field (e.g. a pasted stack trace) is still forwarded truncated,
+// rather than rejected by the backend with a 422 the best-effort path swallows.
+const MAX_COMMENT = 2000;
+const MAX_CLI_VERSION = 100;
+const MAX_ENV = 500;
+
+function cap(value: string | undefined, max: number): string | undefined {
+  if (value === undefined) return undefined;
+  return value.length > max ? value.slice(0, max) : value;
+}
+
+export async function submitFeedback(input: {
+  rating: number;
+  comment?: string;
+  cliVersion: string;
+  env?: string;
+}): Promise<void> {
+  try {
+    const apiBaseUrl = getPublishApiBaseUrl();
+    await fetch(`${apiBaseUrl}/v1/hyperframes/feedback`, {
+      method: "POST",
+      body: JSON.stringify({
+        rating: input.rating,
+        comment: cap(input.comment, MAX_COMMENT),
+        cli_version: cap(input.cliVersion, MAX_CLI_VERSION),
+        env: cap(input.env, MAX_ENV),
+      }),
+      headers: {
+        "content-type": "application/json",
+        heygen_route: "canary",
+      },
+      signal: AbortSignal.timeout(5000),
+    });
+  } catch {
+    // Best-effort only.
+  }
+}