fix(feedback): drop metadata keys not registered on Aperture form template

Bug bash test 2.2 surfaced an HTTP 400 from Aperture:
"There is a mismatch between the Form's metadata and the Form-Template's metadata"

Root cause: a previous review-fix push added `node-version` and `cli-mode`
keys to metadataList, but the published Aperture form template only
registers `cli-version` and `os`. Aperture rejects any submission with
unrecognized metadata keys.

Fix: drop the two unrecognized keys from metadataList. Encode the same
context (node version, cli/tui mode) into the `location` field, which is
free-form text on Aperture's side.

Verified end-to-end through the CLI against prod:
  agentcore feedback "post-fix CLI submission verification" --json
  → {"success":true,"id":"211f3041-...","reference":"agentcore-cli"}

Author: tejaskash

src/cli/operations/feedback/__tests__/build-payload.test.ts

@@ -7,7 +7,6 @@ describe('buildFeedbackPayload', () => {
       message: 'CLI ate my homework',
       cliVersion: '0.1.0-alpha.42',
       osDescriptor: 'darwin 25.3.0',
-      nodeVersion: 'v20.20.0',
       mode: 'cli',
     });
 
@@ -17,17 +16,19 @@ describe('buildFeedbackPayload', () => {
     expect(payload.locale).toBe('en_US');
     expect(payload.reference).toBe('agentcore-cli');
     expect(payload.location).toContain('agentcore-cli@0.1.0-alpha.42');
+    expect(payload.location).toContain('cli');
     expect(payload.customerResponses).toHaveLength(1);
     expect(payload.customerResponses[0]).toMatchObject({
       question: 'What feedback do you have for the AgentCore CLI',
       pii: false,
       response: { responseType: 'textArea', responseValue: 'CLI ate my homework' },
     });
+    // Aperture form template only registers `cli-version` and `os`. Other
+    // context (node version, mode) lives in `location` until the template
+    // adds those keys; sending unknown metadata keys is a hard 400.
     expect(payload.metadataList).toEqual([
       { key: 'cli-version', value: '0.1.0-alpha.42' },
       { key: 'os', value: 'darwin 25.3.0' },
-      { key: 'node-version', value: 'v20.20.0' },
-      { key: 'cli-mode', value: 'cli' },
     ]);
   });
 

src/cli/operations/feedback/build-payload.ts

@@ -7,9 +7,7 @@ import {
   FEEDBACK_ATTACHMENT_QUESTION,
   FEEDBACK_MESSAGE_QUESTION,
   FEEDBACK_REFERENCE,
-  METADATA_KEY_CLI_MODE,
   METADATA_KEY_CLI_VERSION,
-  METADATA_KEY_NODE_VERSION,
   METADATA_KEY_OS,
 } from './constants';
 import type { ApertureCustomerResponse, ApertureFormPayload, ApertureMetadata, FeedbackMode } from './types';
@@ -21,15 +19,14 @@ interface BuildPayloadInput {
   mode?: FeedbackMode;
   cliVersion?: string;
   osDescriptor?: string;
-  nodeVersion?: string;
 }
 
 export function buildOsDescriptor(): string {
   return `${process.platform} ${os.release()}`;
 }
 
 export function buildLocationDescriptor(cliVersion: string, mode: FeedbackMode): string {
-  return `agentcore-cli@${cliVersion} (${process.platform}; ${mode})`;
+  return `agentcore-cli@${cliVersion} (${process.platform}; node ${process.version}; ${mode})`;
 }
 
 export function buildUserAgent(cliVersion: string): string {
@@ -39,7 +36,6 @@ export function buildUserAgent(cliVersion: string): string {
 export function buildFeedbackPayload(input: BuildPayloadInput): ApertureFormPayload {
   const cliVersion = input.cliVersion ?? PACKAGE_VERSION;
   const osDescriptor = input.osDescriptor ?? buildOsDescriptor();
-  const nodeVersion = input.nodeVersion ?? process.version;
   const mode: FeedbackMode = input.mode ?? 'cli';
 
   const customerResponses: ApertureCustomerResponse[] = [
@@ -64,11 +60,12 @@ export function buildFeedbackPayload(input: BuildPayloadInput): ApertureFormPayl
     });
   }
 
+  // Aperture validates metadata keys against the published form template; sending unknown
+  // keys is rejected with HTTP 400. Only `cli-version` and `os` are registered today.
+  // node-version and cli-mode are encoded into `location` until the template is updated.
   const metadataList: ApertureMetadata[] = [
     { key: METADATA_KEY_CLI_VERSION, value: cliVersion },
     { key: METADATA_KEY_OS, value: osDescriptor },
-    { key: METADATA_KEY_NODE_VERSION, value: nodeVersion },
-    { key: METADATA_KEY_CLI_MODE, value: mode },
   ];
 
   return {

src/cli/operations/feedback/constants.ts

@@ -14,8 +14,6 @@ export const FEEDBACK_MESSAGE_QUESTION = 'What feedback do you have for the Agen
 export const FEEDBACK_ATTACHMENT_QUESTION = 'Attachments';
 export const METADATA_KEY_CLI_VERSION = 'cli-version';
 export const METADATA_KEY_OS = 'os';
-export const METADATA_KEY_NODE_VERSION = 'node-version';
-export const METADATA_KEY_CLI_MODE = 'cli-mode';
 
 export const FEEDBACK_REFERENCE = 'agentcore-cli';