Remove outdated tests for CodexLens and LiteLLM client, refactor Smart Search MCP usage tests to use new command structure, and clean up unified vector index tests.

ccw/frontend/src/locales/en/mcp-manager.json

@@ -183,10 +183,6 @@
         "name": "ask_question",
         "desc": "Ask interactive questions through A2UI interface"
       },
-      "smart_search": {
-        "name": "smart_search",
-        "desc": "Intelligent code search with fuzzy and semantic modes"
-      },
       "team_msg": {
         "name": "team_msg",
         "desc": "Persistent JSONL message bus for Agent Team communication"

ccw/frontend/src/locales/zh/mcp-manager.json

@@ -172,10 +172,6 @@
         "name": "ask_question",
         "desc": "通过 A2UI 界面发起交互式问答"
       },
-      "smart_search": {
-        "name": "smart_search",
-        "desc": "智能代码搜索，支持模糊和语义搜索模式"
-      },
       "team_msg": {
         "name": "team_msg",
         "desc": "Agent Team 持久化消息总线，用于团队协作通信"