fix(desktop): retain cold-start budget after runtime installation

apps/desktop/src/lib/with-timeout.test.ts

@@ -3,6 +3,25 @@ import { describe, expect, it, vi } from 'vitest'
 import { withBootstrapAwareTimeout, withTimeout } from './with-timeout'
 
 describe('withTimeout', () => {
+  it('allows a full cold start when installation finishes near a deadline', async () => {
+    vi.useFakeTimers()
+    try {
+      let active = true
+      let finish!: (value: string) => void
+      const connection = new Promise<string>(resolve => {
+        finish = resolve
+      })
+      const result = withBootstrapAwareTimeout(connection, 45_000, 'timeout', async () => ({ active }))
+      await vi.advanceTimersByTimeAsync(75_000)
+      active = false
+      await vi.advanceTimersByTimeAsync(25_000)
+      finish('connected')
+      await expect(result).resolves.toBe('connected')
+    } finally {
+      vi.useRealTimers()
+    }
+  })
+
   it.each([{ active: true }, { setupChoice: { active: true } }])(
     'waits beyond cold boot during setup: %j',
     async state => {

apps/desktop/src/lib/with-timeout.ts

@@ -39,6 +39,7 @@ export async function withBootstrapAwareTimeout<T>(
   cancelled: () => boolean = () => false
 ): Promise<T> {
   let settled = false
+  let setupObserved = false
   const request = promise.then(
     value => {
       settled = true
@@ -58,9 +59,17 @@ export async function withBootstrapAwareTimeout<T>(
         throw error
       }
       const state = await withTimeout(bootstrapState(), Math.min(ms, 5_000), message)
-      if (!state?.active && !state?.setupChoice) {
+      if (state?.active || state?.setupChoice) {
-        throw error
+        setupObserved = true
+        continue
       }
+      // Setup may have finished just before this probe. The new backend must
+      // still receive one complete cold-start budget after the installer.
+      if (setupObserved) {
+        setupObserved = false
+        continue
+      }
+      throw error
     }
   }
 }