feat: add exa-web-search to MCP config template

mcp-configs/mcp-servers.json

@@ -66,6 +66,14 @@
       "url": "https://mcp.clickhouse.cloud/mcp",
       "description": "ClickHouse analytics queries"
     },
+    "exa-web-search": {
+      "command": "npx",
+      "args": ["-y", "exa-mcp-server"],
+      "env": {
+        "EXA_API_KEY": "YOUR_EXA_API_KEY_HERE"
+      },
+      "description": "Web search, research, and data ingestion via Exa API — recommended for research-first development workflow"
+    },
     "context7": {
       "command": "npx",
       "args": ["-y", "@context7/mcp-server"],