fix(web): pass proxy to DDGS client

The DuckDuckGo search provider instantiated DDGS(timeout=10) without
passing the configured proxy, making web_search unusable in environments
that require a proxy (e.g. behind GFW). DDGS supports a proxy parameter
and the proxy value is already available as self.proxy — it was simply
not forwarded.

Add a test verifying the proxy kwarg is forwarded to DDGS.

nanobot/agent/tools/web.py

@@ -759,7 +759,7 @@ class WebSearchTool(Tool):
             # We run it in a thread to avoid blocking the loop
             from ddgs import DDGS
 
-            ddgs = DDGS(timeout=10)
+            ddgs = DDGS(timeout=10, proxy=self.proxy)
             raw = await asyncio.wait_for(
                 asyncio.to_thread(ddgs.text, query, max_results=n),
                 timeout=self.config.timeout,

tests/tools/test_web_search_tool.py

@@ -365,6 +365,27 @@ async def test_duckduckgo_search(monkeypatch):
     assert "DDG Result" in result
 
 
+@pytest.mark.asyncio
+async def test_duckduckgo_search_passes_proxy(monkeypatch):
+    """DDGS client must receive the configured proxy so search works behind a proxy."""
+    captured: dict = {}
+
+    class ProxyCaptorDDGS:
+        def __init__(self, **kw):
+            captured.update(kw)
+
+        def text(self, query, max_results=5):
+            return [{"title": "Proxied", "href": "https://ddg.example", "body": "OK"}]
+
+    monkeypatch.setattr("ddgs.DDGS", ProxyCaptorDDGS)
+
+    tool = _tool(provider="duckduckgo")
+    tool.proxy = "http://192.168.1.1:8080"
+    result = await tool.execute(query="hello")
+    assert captured.get("proxy") == "http://192.168.1.1:8080"
+    assert "Proxied" in result
+
+
 @pytest.mark.asyncio
 async def test_brave_fallback_to_duckduckgo_when_no_key(monkeypatch):
     class MockDDGS: