chore(mcp): load env file in dev

packages/mcp/.gitignore

···
+.env

packages/mcp/deno.jsonc

···
   },
   "tasks": {
     "inspector": "npx @modelcontextprotocol/inspector",
-    "http": "deno -P --allow-net ./index.ts --http",
-    "stdio": "deno -P ./index.ts",
+    "http": "deno -P --allow-net --env-file ./index.ts --http",
+    "stdio": "deno -P --env-file ./index.ts",
     "stdio:inspect": "npx @modelcontextprotocol/inspector deno task stdio"
   },
   "permissions": {