docs(seo): improve OpenCode context compaction discoverability

OV
3d ago
+74-10

Summary

  • target OpenCode context compression, context compaction, /compact, /summarize, context pruning, and context-window search intent
  • strengthen README and package discovery metadata without adding unsupported performance claims
  • add canonical, Open Graph, Twitter, and SoftwareSourceCode structured metadata to the GitHub Pages site
  • add robots.txt and sitemap.xml for crawler discovery

Verification

  • changes are documentation/metadata only; runtime plugin code is untouched
  • terminology is aligned with current OpenCode compaction documentation and TUI /compact command
  • branch is 4 semantic atomic commits ahead of main