feat: add persistent desktop assistant workspace

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

src/main/agent/anthropic-endpoint.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest'
+import {
+  createAnthropicApiBaseUrl,
+  createAnthropicMessagesUrl
+} from './anthropic-endpoint'
+
+describe('Anthropic endpoint normalization', () => {
+  it.each([
+    ['https://model.example', 'https://model.example/v1'],
+    ['https://model.example/', 'https://model.example/v1'],
+    ['https://model.example/v1', 'https://model.example/v1'],
+    ['https://model.example/proxy/', 'https://model.example/proxy/v1']
+  ])('normalizes %s to an API root', (input, expected) => {
+    expect(createAnthropicApiBaseUrl(input)).toBe(expected)
+  })
+
+  it('creates the messages endpoint without duplicating v1', () => {
+    expect(
+      createAnthropicMessagesUrl('https://model.example/v1').toString()
+    ).toBe('https://model.example/v1/messages')
+  })
+})