Add English README with badges, installation guide, usage examples,
and architecture overview. Bump version to 1.0.0 in manifest and package.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
package.json mit better-sqlite3, tsconfig (strict, ES2022),
esbuild mit native-module-resolver für better-sqlite3,
manifest.json (Desktop-only), leere styles.css.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
