fix(client): work through the findings from the coverage pass

214 items came out of writing the tests. Real defects are corrected, dead code
is removed rather than covered, and the tests that pinned the old behaviour
move with them.

Also drops two agent coverage scratch files that slipped into the coverage PR
and adds the ignore rule that keeps them out.

client/src/api/client.behavior.test.ts

@@ -1,4 +1,4 @@
-// FE-APIWIRE-001 to FE-APIWIRE-035
+// FE-APIWIRE-001 to FE-APIWIRE-036
 import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
 import { AxiosError, type AxiosAdapter, type AxiosResponse, type InternalAxiosRequestConfig } from 'axios'
 import { http, HttpResponse } from 'msw'
@@ -184,6 +184,20 @@ describe('client > rate-limit translation', () => {
     const err = await captureError(() => apiClient.get('/limited'))
     expect(err.response?.data).toEqual({ error: 'Too many attempts. Please try again later.' })
   })
+
+  it('FE-APIWIRE-035: an array 429 body is replaced, not grafted onto', async () => {
+    server.use(http.get('/api/limited', () => HttpResponse.json([{ field: 'email' }], { status: 429 })))
+    const err = await captureError(() => apiClient.get('/limited'))
+    expect(err.response?.data).toEqual({ error: 'Too many attempts. Please try again later.' })
+  })
+
+  it('FE-APIWIRE-036: Catalan, Greek and Vietnamese have their own 429 message', async () => {
+    for (const lang of ['ca', 'gr', 'vi']) {
+      localStorage.setItem('app_language', lang)
+      const err = await captureError(() => apiClient.get('/limited'))
+      expect(err.message).not.toBe('Too many attempts. Please try again later.')
+    }
+  })
 })
 
 describe('client > proxy auth challenges', () => {
@@ -398,6 +412,7 @@ describe('client > adminApi.llmLocalPull', () => {
           read: async () => (i < chunks.length
             ? { done: false, value: encoder.encode(chunks[i++]) }
             : { done: true, value: undefined }),
+          cancel: async () => {},
         }),
       },
     } as unknown as Response
@@ -450,13 +465,26 @@ describe('client > adminApi.llmLocalPull', () => {
       .rejects.toThrow('Pull failed (500)')
   })
 
-  it('FE-APIWIRE-033: a 200 without a readable body is treated as a failure', async () => {
+  it('FE-APIWIRE-036: a throw from onProgress aborts the pull', async () => {
+    vi.spyOn(globalThis, 'fetch').mockResolvedValueOnce(streamingResponse([
+      '{"status":"pulling manifest"}\n{"error":"manifest not found"}\n{"status":"success"}\n',
+    ]))
+    const onProgress = vi.fn((p: { error?: string }) => {
+      if (p.error) throw new Error(p.error)
+    })
+
+    await expect(adminApi.llmLocalPull('http://ollama:11434', 'x', onProgress))
+      .rejects.toThrow('manifest not found')
+    expect(onProgress).toHaveBeenCalledTimes(2)
+  })
+
+  it('FE-APIWIRE-033: a 200 without a readable body reports the missing stream', async () => {
     vi.spyOn(globalThis, 'fetch').mockResolvedValueOnce({
       ok: true, status: 200, body: null,
       json: async () => ({}),
     } as unknown as Response)
 
     await expect(adminApi.llmLocalPull('http://ollama:11434', 'x', vi.fn()))
-      .rejects.toThrow('Pull failed (200)')
+      .rejects.toThrow('Pull returned no progress stream')
   })
 })