feat: add persistent desktop assistant workspace

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

src/main/agent/unconfigured-runtime.ts

@@ -0,0 +1,33 @@
+import type {
+  AgentEvent,
+  AgentRuntimeStatus
+} from '../../shared/contracts'
+import type {
+  AgentExecutionRequest,
+  AgentRuntime
+} from './runtime'
+
+export class UnconfiguredAgentRuntime implements AgentRuntime {
+  readonly requiresToolApproval = false
+
+  getStatus(): Promise<AgentRuntimeStatus> {
+    return Promise.resolve({
+      id: 'setup',
+      label: '需要配置模型',
+      available: false,
+      detail: '请在设置中选择并配置可用的模型或 Agent Runtime'
+    })
+  }
+
+  async *run(
+    request: AgentExecutionRequest
+  ): AsyncGenerator<AgentEvent, void, void> {
+    yield {
+      requestId: request.requestId,
+      type: 'error',
+      message: '请先完成模型与 Agent Runtime 配置'
+    }
+  }
+
+  async dispose(): Promise<void> {}
+}