Release 2.1.0

• feat: export Zod schemas and publish JSON Schema #5
• feat: export Zod schemas and publish JSON Schema #4
• chore: update all dependencies to latest compatible versions d1c10a6
• refactor: switch from mocha/chai/nyc to vitest 0896038
• refactor: switch to eslint.config.ts flat config + add STAN 2132eac
• added dotenvx b5380a6
• fix: resolve allowImportingTsExtensions build conflict + improve README ed24062
• feat: upgrade to Zod 4, use built-in z.toJSONSchema() 8afe7d6
• fix: align tsconfig, rollup, and gitignore with template a84c728
• chore: sync .vscode settings with template + add cross-env for NO_COLOR 52bf41e
• docs: add JSON Schema and Zod schema usage section to README 0646b72
• eliminated tslog b1308a1
• refactor: address Gemini review feedback on types.ts 57187d4
• added tests a331535
• chore: release v2.0.6 78250e8
• fix: remove disabled eslint rules (no-non-null-assertion, no-unused-expressions) 56cbc6d
• fix: resolve tsdoc @module warning in generate-json-schema script 43b8dac