v0.1.2 - Activity Enrichment & Fetch Reliability

Features

• Channel activity enrichment now runs entirely in the service worker for
  reliability and performance
• Improved channel parsing and classification logic
• Added activity filtering for channels in the dashboard (Closes #2)
• Better upload-date detection and dashboard display

Fixes

• Fetch logic now includes YouTube cookies for desktop site access
• Use credentials: 'include' for activity-check fetches
• Broadened YouTube host permissions for CORS-exempt fetches
• Improved cancellation handling during enrichment and unsubscribe

Docs

• Updated ARCHITECTURE.md and README with installation and usage instructions

Notes

• Recommended update for all users.