Squashed commit of the following:

commit 53832c7fe390f1a058f1ba889114d8efedd5fa0a
Author: zereight <[email protected]>
Date:   Tue Aug 19 19:36:17 2025 +0900

    fix: Remove obsolete scripts for PR validation and GitHub release creation

commit 3b0039846027c334f299003154cdcbcc128052ca
Author: zereight <[email protected]>
Date:   Tue Aug 19 19:35:00 2025 +0900

    fix: Remove generate-tools-readme script and its reference from package.json

Author: zereight

.github/pr-validation-guide.md

@@ -21,7 +21,6 @@
     "dev": "npm run build && node build/index.js",
     "watch": "tsc --watch",
     "deploy": "npm publish --access public",
-    "generate-tools": "npx ts-node scripts/generate-tools-readme.ts",
     "changelog": "auto-changelog -p",
     "test": "node test/validate-api.js",
     "test:integration": "node test/validate-api.js",