v0.1.1

Added

• Added a short security policy for private note content handling.

Changed

• Reworked the README around install, dry-run, output layout, export reports,
  permissions, safety, and release guidance.
• Improved CLI fatal error messages for Automation permission, extraction
  timeout, unsupported OS, and unavailable Notes app.
• Strengthened tests for dry-run safety, overwrite behavior, paths,
  frontmatter, reports, attachments, and extractor errors.

Fixed

• Avoid printing raw note content when extractor JSON parsing fails.
• Kept documented release artifact names consistent with the Makefile output.

Security

• Documented that exported note content and reports may contain private data.