Modernize Build Toolchain

[christopherthielen]

This PR modernizes the build toolchain with faster, Rust-based tools and updates all dependencies.

Changes
🔧 Migrate from Rollup to Rolldown (c522c49)

• Replace rollup with rolldown (Rust-based, Rollup-compatible bundler)
• Replace rollup.config.js with rolldown.config.mjs
• Use rollup-plugin-styles with moduleTypes: { '.css': 'js' } for CSS injection
• Add resolve.alias to map react/jsx-runtime → preact/jsx-runtime
• Update Preact from ~10.4.8 → ^10.28.1 (required for JSX runtime)
• Update TypeScript from ^4.0.3 → ^5.9.3
• Update tsconfig.json lib to es2017 for Promise.finally support

🔄 Switch dev server (aa330be)

• Replace http-server with serve (already a dependency)
• Update serve to ^14.2.5

📦 Update all dependencies (c7405cb)

• Major updates: d3-hierarchy (2→3), d3-interpolate (1→3), husky (4→9), prettier (2→3)
• Migrate husky config from package.json to .husky/pre-commit
• Update type definitions and other dev dependencies

⚡ Migrate compilation to tsgo (cfc23c3)

• Add @typescript/native-preview (tsgo - Go-based TypeScript compiler)
• Use tsgo for lib/ and lib-esm/ compilation
• Keep typescript for rolldown's internal type handling