v0.26.11

Highlights

• Add 11 tips slide deck (tips-slides.html) plus a slingshot game demo slide
• Fix half-clone skill broken by new Claude Code session-metadata lines
• Mention Antigravity CLI instead of Gemini CLI
• Add npm publishing notes to global CLAUDE.md (2FA, automation token)
• Add auto mode note to the containers tip
• Various slide cleanups and copy fixes