fix(core): stop isRecord from accepting arrays

isRecord returned true for an array, so unwrap let { project: [] }
through as a Project and the file-framework guard returned [] as a
DetectedFramework instead of raising the malformed-response error. No
caller wants an array to count as a record, so exclude arrays in the
helper and cover both boundaries with an array case.

#claude_code#
🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: SakshiKoli-CS

src/core/values.test.ts

@@ -5,7 +5,7 @@ describe('input value helpers', () => {
   it.each([
     [{}, true],
     [{ a: 1 }, true],
-    [[], true],
+    [[], false],
     [null, false],
     [undefined, false],
     ['', false],

src/core/values.ts

@@ -1,7 +1,7 @@
 import { UsageError } from './errors';
 
 export function isRecord(value: unknown): value is Record<string, unknown> {
-  return typeof value === 'object' && value !== null;
+  return typeof value === 'object' && value !== null && !Array.isArray(value);
 }
 
 export function messageOf(error: unknown): string {

src/projects/projects.api.test.ts

@@ -568,8 +568,8 @@ describe('ProjectsApi create and detection endpoints', () => {
     });
   });
 
-  it('raises a malformed-response error when a framework response is not an object', async () => {
-    const { client } = fakeRestClient(null);
+  it.each([[null], [[]]])('raises a malformed-response error when a framework response is %p, not an object', async (body) => {
+    const { client } = fakeRestClient(body);
 
     await expect(new ProjectsApi(client).fileFramework({ org: 'org1', uploadUid: 'u' })).rejects.toThrow(
       'The Launch API returned a framework response that was not an object.',

src/transport/envelope.test.ts

@@ -33,6 +33,7 @@ describe('response envelope', () => {
     [{}],
     [{ project: null }],
     [{ project: 'p1' }],
+    [{ project: [] }],
   ])('refuses %p as an envelope that carries no project', (response) => {
     const error = failureFrom(() => unwrap(response, 'project', 'project response'));