完善 AGC 独立 Agent 试验验证

支持使用 Fake Provider 验证跨进程 Agent 回合

修正独立 Agent 与排队模型的匹配和子进程超时回收

补充 AGC 到独立 App Server 的真实子进程 smoke

rust/crates/agent-cli/src/main.rs

@@ -437,19 +437,16 @@ fn configure_host_with_fake_call_id(
 ) -> Result<AgentHost, Box<dyn std::error::Error>> {
     match config.provider().as_str() {
         "fake" => {
-            host = if let Some(call_id) = fake_call_id {
-                host.with_provider(
-                    Arc::new(agent_provider_fake::FakeProvider::tool_then_text(
-                        call_id,
-                        "echo",
-                        json!({"text": "hello from fake provider"}),
-                        "fake provider complete",
-                    )),
-                    "fake",
-                )
-            } else {
-                host.with_fake_provider()
-            }
+            let call_id = fake_call_id.unwrap_or("echo-call-1");
+            host = host.with_provider(
+                Arc::new(agent_provider_fake::FakeProvider::tool_then_text(
+                    call_id,
+                    "echo",
+                    json!({"text": "hello from fake provider"}),
+                    "fake provider complete",
+                )),
+                config.model(),
+            )
         }
         "openai" => {
             let model = config.model();