feat: add version check and update notifications

feat: type-aware skills/commands and agents output (#6)

fix: skip poem-writer test when fixture file is absent

ci: add cross-platform CI workflow and fix printf format bug

feat: add Windows install script and README instructions

Merge pull request #3 from datagendev/feat/fetch-api-key-on-login

feat(login): fetch real API key after OAuth token exchange

Merge pull request #2 from datagendev/claude/investigate-datagen-login-SGOpB

feat(login): add scope param and separate server URL for OAuth flow

feat(login): add OAuth PKCE browser login flow

fix: use correct API base URL (api.datagen.dev)

docs: update CLI description and README for agent deployment workflow

Merge pull request #1 from datagendev/yuehlin/cli-github

docs: add schedule command to README and deploy-agent skill

feat: add `datagen agents schedule` CLI command for managing cron schedules