chore: complete Phase 1 core setup for plain-git 🚀

Author: prakashaditya13

.eslintrc.js

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+module.exports = {
+  root: true,
+  env: { node: true, es2022: true },
+  parser: '@typescript-eslint/parser',
+  plugins: ['@typescript-eslint'],
+  extends: ['eslint:recommended', 'plugin:@typescript-eslint/recommended'],
+  rules: {
+    semi: ['error', 'always'],
+    quotes: ['error', 'single'],
+    '@typescript-eslint/no-explicit-any': 'off'
+  }
+};

.gitignore

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+node_modules
+dist
+.DS_Store
+.env
+coverage

.prettierrc

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+{
+  "semi": true,
+  "singleQuote": true,
+  "trailingComma": "all",
+  "printWidth": 100,
+  "tabWidth": 2
+}

README.md

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+# 🧰 plain-git
+
+A lightweight, cross-platform Node.js + TypeScript library and CLI that lets developers perform Git actions through plain English or short commands — powered by the native `git` CLI.
+
+## 🚀 Features
+- Zero runtime dependencies
+- Cross-platform (Windows, macOS, Linux)
+- Can be used as CLI or programmatically
+- Lightweight and developer-friendly
+
+## 🧑‍💻 Usage
+```bash
+npx plain-git

jest.config.js

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+const { createDefaultPreset } = require("ts-jest");
+
+const tsJestTransformCfg = createDefaultPreset().transform;
+
+/** @type {import("jest").Config} **/
+module.exports = {
+  testEnvironment: "node",
+  transform: {
+    ...tsJestTransformCfg,
+  },
+};