Gemini CLI 写 README · 配置与操作材料

Gemini 原生工具：glob → read_file → grep_search。下面为真实源码映射教材，不是假造 Gemini 工具日志。

command-source-map.json

[
  {
    "instruction": "Node >=24",
    "file": "package.json",
    "field": "engines.node"
  },
  {
    "instruction": "npm start",
    "file": "package.json",
    "field": "scripts.start"
  },
  {
    "instruction": "PORT optional, default 4377",
    "file": "server.mjs",
    "line": 2
  },
  {
    "instruction": "GREETING optional, default Hello fixture",
    "file": "server.mjs",
    "line": 3
  },
  {
    "instruction": ".env must exist because --env-file=.env",
    "file": "package.json",
    "field": "scripts.start"
  }
]

README.fixed.md

# Local greeting service
Requires Node >=24; no dependencies to install.
Copy env-example.txt to .env (fictional values only), then npm start.
Open http://127.0.0.1:4377/ to read JSON. Stop with Ctrl+C.
PORT and GREETING are optional in server.mjs, but .env itself must exist for --env-file.
If the port is busy, change PORT. There is no npm run dev and no database or API key.
Run npm run check to compare the command map to source.