NewYearsCards v0.2.2

Added

• Developer launcher script newyearscards to run CLI without install or PYTHONPATH.
• Makefile targets run-download and run-build for no‑install usage.
• Ruff configured and added to [project.optional-dependencies].dev.

Changed

• README clarified with correct command invocations:
  • Installed usage, from‑source python newyearscards ..., and uv run examples.
  • Highlighted .env configuration (SHEET_URL required; RAW/PROCESSED dir overrides; ADDRESS_TEMPLATES; SERVICE_ACCOUNT_KEY).
• Minor CLI cleanup and formatting, tests remain green.