Replace Bun with Node.js

- Replace bun with npm/node in package.json scripts
- Update RELEASE.md to reference npm commands throughout
- Remove bun.lock and add package-lock.json
- Remove bun engine requirement from package.json

This change improves compatibility with standard Node.js tooling
and aligns with the augment-agent repository changes.

Author: justinxu421

RELEASE.md

@@ -8,13 +8,13 @@ Use the built-in npm scripts for easy version bumping:
 
 ```bash
 # For patch releases (bug fixes): 0.1.0 -> 0.1.1
-bun run version:patch
+npm run version:patch
 
 # For minor releases (new features): 0.1.0 -> 0.2.0
-bun run version:minor
+npm run version:minor
 
 # For major releases (breaking changes): 0.1.0 -> 1.0.0
-bun run version:major
+npm run version:major
 ```
 
 These scripts will:
@@ -31,13 +31,13 @@ If you prefer manual control:
 1. **Update the version in package.json:**
 
    ```bash
-   bun version 0.1.1  # or whatever version you want
+   npm version 0.1.1  # or whatever version you want
    ```
 
 2. **Type check the project:**
 
    ```bash
-   bun run typecheck
+   npm run typecheck
    ```
 
 3. **Commit the changes:**
@@ -93,7 +93,7 @@ This allows users to pin to major versions for automatic updates:
 
 **Type check failures:**
 
-- Run `bun run typecheck` locally to check for TypeScript errors
+- Run `npm run typecheck` locally to check for TypeScript errors
 - Ensure all dependencies are properly installed
 
 **Release not created:**

bun.lock

@@ -5,7 +5,7 @@
   "main": "action.yml",
   "type": "module",
   "scripts": {
-    "test": "bun test",
+    "test": "node --test",
     "format": "prettier --write .",
     "format:check": "prettier --check .",
     "format:staged": "prettier --write --cache --ignore-unknown",
@@ -36,8 +36,7 @@
   },
   "homepage": "https://github.com/augmentcode/review-pr#readme",
   "engines": {
-    "node": ">=22.0.0",
-    "bun": ">=1.0.0"
+    "node": ">=22.0.0"
   },
   "files": [
     "action.yml",