fix(skill): improve clawhub command handling

tests/test_skill_commands.py

@@ -63,6 +63,54 @@ async def test_skill_search_runs_clawhub_search(tmp_path: Path) -> None:
         "--limit",
         "5",
     )
+    env = create_proc.await_args.kwargs["env"]
+    assert env["npm_config_cache"].endswith("nanobot-npm-cache")
+    assert env["npm_config_fetch_retries"] == "0"
+    assert env["npm_config_fetch_timeout"] == "5000"
+
+
+@pytest.mark.asyncio
+async def test_skill_search_surfaces_npm_network_errors(tmp_path: Path) -> None:
+    loop = _make_loop(tmp_path)
+    proc = _FakeProcess(
+        returncode=1,
+        stderr=(
+            "npm error code EAI_AGAIN\n"
+            "npm error request to https://registry.npmjs.org/clawhub failed"
+        ),
+    )
+    create_proc = AsyncMock(return_value=proc)
+
+    with patch("nanobot.agent.loop.shutil.which", return_value="/usr/bin/npx"), \
+         patch("nanobot.agent.loop.asyncio.create_subprocess_exec", create_proc):
+        response = await loop._process_message(
+            InboundMessage(channel="cli", sender_id="user", chat_id="direct", content="/skill search test")
+        )
+
+    assert response is not None
+    assert "could not reach the npm registry" in response.content
+    assert "EAI_AGAIN" in response.content
+
+
+@pytest.mark.asyncio
+async def test_skill_search_empty_output_returns_no_results(tmp_path: Path) -> None:
+    loop = _make_loop(tmp_path)
+    proc = _FakeProcess(stdout="")
+    create_proc = AsyncMock(return_value=proc)
+
+    with patch("nanobot.agent.loop.shutil.which", return_value="/usr/bin/npx"), \
+         patch("nanobot.agent.loop.asyncio.create_subprocess_exec", create_proc):
+        response = await loop._process_message(
+            InboundMessage(
+                channel="cli",
+                sender_id="user",
+                chat_id="direct",
+                content="/skill search selfimprovingagent",
+            )
+        )
+
+    assert response is not None
+    assert 'No skills found for "selfimprovingagent"' in response.content
 
 
 @pytest.mark.asyncio
@@ -74,6 +122,11 @@ async def test_skill_search_runs_clawhub_search(tmp_path: Path) -> None:
             ("install", "demo-skill"),
             "Installed demo-skill",
         ),
+        (
+            "/skill uninstall demo-skill",
+            ("uninstall", "demo-skill", "--yes"),
+            "Uninstalled demo-skill",
+        ),
         (
             "/skill list",
             ("list",),
@@ -117,7 +170,7 @@ async def test_skill_help_includes_skill_command(tmp_path: Path) -> None:
     )
 
     assert response is not None
-    assert "/skill <search|install|list|update>" in response.content
+    assert "/skill <search|install|uninstall|list|update>" in response.content
 
 
 @pytest.mark.asyncio
@@ -143,8 +196,13 @@ async def test_skill_usage_errors_are_user_facing(tmp_path: Path) -> None:
     missing_slug = await loop._process_message(
         InboundMessage(channel="cli", sender_id="user", chat_id="direct", content="/skill install")
     )
+    missing_uninstall_slug = await loop._process_message(
+        InboundMessage(channel="cli", sender_id="user", chat_id="direct", content="/skill uninstall")
+    )
 
     assert usage is not None
     assert "/skill search <query>" in usage.content
     assert missing_slug is not None
     assert "Missing skill slug" in missing_slug.content
+    assert missing_uninstall_slug is not None
+    assert "/skill uninstall <slug>" in missing_uninstall_slug.content