test(13-08): satisfy vue-tsc -b build-mode checks in test files

npm run build runs vue-tsc -b (project references, noUncheckedIndexedAccess),
stricter than the flat --noEmit used during Task 2 verification: indexed
CustomEvent accesses need non-null assertions, the suspended-chat Promise
needs an explicit <unknown> ctor, and one unused import. 41/41 still green.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/composables/__tests__/archyContentAdapter.test.ts

@@ -2,7 +2,6 @@ import { describe, it, expect } from 'vitest'
 import {
   adaptContentItems,
   adaptToFilm,
-  adaptToSong,
   adaptToPodcast,
   classifyByMime,
   sortDeterministic,

neode-ui/src/services/__tests__/toolConfirm.test.ts

@@ -75,7 +75,7 @@ describe('tool confirmation — ContextBroker half', () => {
     let releaseChat: (v: unknown) => void = () => {}
     vi.mocked(rpcClient.call).mockImplementation((opts: { method: string }) => {
       if (opts.method === 'assistant.chat') {
-        return new Promise((resolve) => {
+        return new Promise<unknown>((resolve) => {
           releaseChat = resolve
         }) as Promise<never>
       }
@@ -101,8 +101,8 @@ describe('tool confirmation — ContextBroker half', () => {
     await vi.advanceTimersByTimeAsync(2000)
 
     expect(confirmRequests).toHaveLength(1)
-    expect(confirmRequests[0].detail.reqId).toBe('confirm-1')
-    expect(confirmRequests[0].detail.description).toBe(PENDING_IMMICH.description)
+    expect(confirmRequests[0]!.detail.reqId).toBe('confirm-1')
+    expect(confirmRequests[0]!.detail.description).toBe(PENDING_IMMICH.description)
 
     // The same pending action is never re-announced while it is open.
     await vi.advanceTimersByTimeAsync(3000)
@@ -214,7 +214,7 @@ describe('tool confirmation — ContextBroker half', () => {
     let releaseChat: (v: unknown) => void = () => {}
     vi.mocked(rpcClient.call).mockImplementation((opts: { method: string }) => {
       if (opts.method === 'assistant.chat') {
-        return new Promise((resolve) => {
+        return new Promise<unknown>((resolve) => {
           releaseChat = resolve
         }) as Promise<never>
       }
@@ -240,9 +240,9 @@ describe('tool confirmation — ContextBroker half', () => {
     await vi.advanceTimersByTimeAsync(2000)
 
     expect(confirmRequests).toHaveLength(2)
-    expect(confirmRequests[1].detail.reqId).toBe('confirm-2')
-    expect(confirmRequests[1].detail.description).toBe(PENDING_GITEA.description)
-    expect(confirmRequests[1].detail.description).not.toBe(PENDING_IMMICH.description)
+    expect(confirmRequests[1]!.detail.reqId).toBe('confirm-2')
+    expect(confirmRequests[1]!.detail.description).toBe(PENDING_GITEA.description)
+    expect(confirmRequests[1]!.detail.description).not.toBe(PENDING_IMMICH.description)
 
     releaseChat({ text: 'done' })
     await chat

neode-ui/src/views/__tests__/chatAiuiEmbed.test.ts

@@ -112,7 +112,7 @@ describe('Chat / AIUI embed URL stability + D-14 defaults (02-07)', () => {
     expect(iframeSrc(wrapper)).toBe(before)
     // and the params are stripped so a refresh does not silently re-ask
     expect(routerReplaceMock).toHaveBeenCalled()
-    const replaceArg = routerReplaceMock.mock.calls[0][0]
+    const replaceArg = routerReplaceMock.mock.calls[0]![0]
     expect(replaceArg.query.ask).toBeUndefined()
     expect(replaceArg.query.askedAt).toBeUndefined()
     wrapper.unmount()