feat(agents): Phase 8.4-10.5 built-in plugins, bundled skills, coordinator

backend/app/routers/plugins.py

@@ -1,8 +1,11 @@
 """Plugin API 路由 - Phase 8.6"""
 
 import os
+import tempfile
+import zipfile
 from typing import Any
 
+import httpx
 from fastapi import APIRouter, HTTPException
 from pydantic import BaseModel
 
@@ -167,3 +170,53 @@ async def add_to_marketplace(plugin: dict[str, str]) -> dict[str, str]:
     _plugin_marketplace = [p for p in _plugin_marketplace if p.get("id") != plugin["id"]]
     _plugin_marketplace.append(plugin)
     return {"status": "added", "id": plugin["id"]}
+
+
+@_marketplace_router.post("/plugins/{plugin_id}/download", response_model=dict[str, str])
+async def download_plugin(plugin_id: str) -> dict[str, str]:
+    """从市场下载并安装插件"""
+    # Find plugin in marketplace
+    plugin = None
+    for p in _plugin_marketplace:
+        if p.get("id") == plugin_id:
+            plugin = p
+            break
+
+    if not plugin:
+        raise HTTPException(
+            status_code=404, detail=f"Plugin '{plugin_id}' not found in marketplace"
+        )
+
+    download_url = plugin.get("download_url")
+    if not download_url:
+        raise HTTPException(status_code=400, detail="Plugin has no download URL")
+
+    try:
+        # Download the plugin archive
+        async with httpx.AsyncClient() as client:
+            response = await client.get(download_url, timeout=60.0)
+            response.raise_for_status()
+            archive_content = response.content
+
+        # Extract to temp directory and install
+        with tempfile.TemporaryDirectory() as temp_dir:
+            archive_path = os.path.join(temp_dir, "plugin.zip")
+            with open(archive_path, "wb") as f:
+                f.write(archive_content)
+
+            extract_dir = os.path.join(temp_dir, "extracted")
+            with zipfile.ZipFile(archive_path, "r") as zf:
+                zf.extractall(extract_dir)
+
+            # Install the plugin
+            manager = get_plugin_manager()
+            if manager.install(extract_dir):
+                return {"status": "installed", "plugin_id": plugin_id}
+            raise HTTPException(status_code=500, detail="Failed to install plugin")
+
+    except httpx.HTTPError as e:
+        raise HTTPException(status_code=502, detail=f"Download failed: {str(e)}")
+    except zipfile.BadZipFile:
+        raise HTTPException(status_code=502, detail="Invalid plugin archive")
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=f"Installation failed: {str(e)}")