fix: make Android tasks use extensions automatically and populate marketplace

mcp_server/background/task_runner.py

@@ -247,6 +247,7 @@ async def run_task(
         print("Running task on agent...")
         task_builder = (
             agent.new_task(goal=task_desc)
+            .with_plugins([])  # The standalone fallback cannot dispatch plugin work.
             .with_name(f"task_{trace_id}")
             .with_trace_recording(enabled=True, path=trace_store.TRACES_DIR)
         )

mcp_server/tools/task_runner.py

@@ -336,6 +336,7 @@ def mobile_run_task(
           execution_target ('android', 'computer', 'mixed') and plugins
           ([{id, profile}] references to saved authorized configurations; never secrets).
           Omitted plugins selects matching enabled defaults; [] disables plugins.
+          Default Android tasks can use mixed extensions on demand without changing targets.
           Computer tasks require an observation plugin, not an Android device.
           Query mobile_workspace first; installation/authorization is in the plugin page.
           timeout_seconds (total execution, default 1800; excludes queue/pause),
@@ -517,7 +518,14 @@ def mobile_run_task(
             }
 
     # 4. Standalone Fallback: Resolve project root, python executable, and background runner module
-    if execution_target != "android" or (runtime_overrides or {}).get("plugins"):
+    from artemis.plugins.store import PluginStore
+
+    plugin_choices = (runtime_overrides or {}).get("plugins")
+    if (
+        execution_target != "android"
+        or plugin_choices
+        or (plugin_choices is None and PluginStore().selections("android"))
+    ):
         error = "插件及电脑任务需要统一任务服务，请启动 ARTEMIS 网页服务后重试；未启动独立任务。"
         trace_store.update_trace_status(trace_id, "failed", error=error)
         return {"trace_id": trace_id, "status": "failed", "error": error}