Modernize React TypeScript template

[scobo]

• Updates dependency versions.
• Converts all files to TypeScript.
• Modernizes use of React 19 hooks.
• Implements the React Compiler for automatic memoization.
• Improves ESLint configuration and addresses all lint issues.
• Adds Stylelint for CSS formatting and addresses all issues.
• Creates # path alias for src to avoid relative path imports.
• Replaces .editorconfig with Prettier for code formatting.
• Uses CSS modules for typed class names with locally-scoped namespaces.
• Adds Husky and lint-staged for automatic checking and fixing of formatting and lint issues.
• Adds __DEV__ global for gating development-only code.
• Updates log.ts to report the template type instead of the package name, as the README.md indicates it should.
• Optimizes images.

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Note

Medium Risk
Mostly tooling/config changes, but it alters the local workflow (Husky + lint-staged) and Node/toolchain expectations (e.g., new ESLint flat config and scripts/log.ts), which can break installs/CI if environments differ.

Overview
Modernizes repo tooling and developer workflow. Removes legacy .editorconfig/.eslintrc.cjs and introduces eslint.config.ts (flat config with strict type-aware TypeScript rules, React/React Compiler/React Refresh, and import sorting), plus Prettier and Stylelint configs/ignores.

Adds automated checks on git actions. Introduces Husky pre-commit (runs lint-staged) and pre-push (runs lint, stylelint, format), alongside .npmrc/.nvmrc and a small .gitignore tweak to allow committing .vscode/settings.json.

Updates template metadata. Refreshes README.md (versions, examples, paths) and index.html metadata, and replaces the old log.js script with scripts/log.ts that reports a fixed template id (react-ts) when running build/dev scripts.

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