Standardize: CI/CD, Build Artifacts, and Repo Settings

[kochizufan]

Based on the standardization policy defined in MaplatHarmony#3, please verify and apply the following changes:

1. Repository & Branching

• Default Branch: Ensure it is set to master.

2. Build & Output (dist)

• Remove CommonJS: Ensure package.json has "type": "module" and main points to an ESM entry (e.g., index.js). Remove any .cjs outputs/support.
• Types: Ensure d.ts files are generated and included in the package.
• Clean Output: dist/ should NOT contain dev-server artifacts (e.g., index.html, hashed index.es-*.js). It should only contain the clean library build (and d.ts).
• Gitignore: dist should typically be valid for npm publish but ignored in git. Verify artifacts are correct.

3. Dev Server & GH Pages

• Dev URL: pnpm dev should serve index.html at the root (http://localhost:5173/).
• GH Pages: The content served by pnpm dev should match what is published to gh-pages.
• Deployment Rule: Deploy to gh-pages ONLY on pushes to master.

4. CI/CD (GitHub Actions)

• Missing CI: If .github/workflows is missing, add it using the standard MaplatHarmony pattern.
• Triggers: Run on ALL commits (pnpm test, pnpm lint, pnpm typecheck, pnpm build).
• Nodes: Use Node 20 and 22 (Drop 18).
• Linting: Enforce linting in CI (do not use local husky/lint-staged hooks).