canvas-present: Presentation Canvas Builder

Read ../canvas/references/presentation-spec.md for slide dimensions, navigation edges, layout patterns, and color coding. Read ../canvas/references/performance-guide.md for node limits.

Operations

Build Presentation (/canvas present [topic])

Create a complete presentation canvas from a topic description.

Workflow:

1. Gather context: Ask the user for:
   • Topic/title (required)
   • Number of slides (default: 6, recommend 6-10)
   • Style: deck (1200×675 clean) or storyboard (1920×1080 with script column)