feat: add persistent desktop assistant workspace

Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>

src/main/assistant/workspace-changes-service.test.ts

@@ -0,0 +1,64 @@
+import { execFile } from 'node:child_process'
+import { mkdtemp, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import { promisify } from 'node:util'
+import { afterEach, describe, expect, it } from 'vitest'
+import { getWorkspaceChanges } from './workspace-changes-service'
+
+const execute = promisify(execFile)
+const temporaryDirectories: string[] = []
+
+afterEach(async () => {
+  await Promise.all(
+    temporaryDirectories.splice(0).map((directory) =>
+      rm(directory, { recursive: true, force: true })
+    )
+  )
+})
+
+describe('getWorkspaceChanges', () => {
+  it('returns tracked and untracked Git workspace changes', async () => {
+    const directory = await mkdtemp(join(tmpdir(), 'goodbuddy-changes-'))
+    temporaryDirectories.push(directory)
+    await execute('git', ['init'], { cwd: directory })
+    await writeFile(join(directory, 'tracked.txt'), 'before\n')
+    await execute('git', ['add', 'tracked.txt'], { cwd: directory })
+    await execute(
+      'git',
+      [
+        '-c',
+        'user.name=GoodBuddy Test',
+        '-c',
+        'user.email=test@goodbuddy.invalid',
+        'commit',
+        '-m',
+        'initial'
+      ],
+      { cwd: directory }
+    )
+    await writeFile(join(directory, 'tracked.txt'), 'after\n')
+    await writeFile(join(directory, 'new.txt'), 'new\n')
+
+    const changes = await getWorkspaceChanges(directory)
+
+    expect(changes).toMatchObject({
+      available: true,
+      truncated: false
+    })
+    expect(changes.status).toContain('M tracked.txt')
+    expect(changes.status).toContain('?? new.txt')
+    expect(changes.patch).toContain('-before')
+    expect(changes.patch).toContain('+after')
+  })
+
+  it('fails safely for a non-Git directory', async () => {
+    const directory = await mkdtemp(join(tmpdir(), 'goodbuddy-changes-'))
+    temporaryDirectories.push(directory)
+
+    const changes = await getWorkspaceChanges(directory)
+
+    expect(changes.available).toBe(false)
+    expect(changes.error).toBeTruthy()
+  })
+})