feat: presentation navigation model (region-based page switch + onDone)

[cassdeckard]

Summary

Implement or document a "presentation mode" pattern that combines (a) an info bar TextView with regions for slide indices and SetHighlightedFunc to switch pages, and (b) slide-level SetDoneFunc/onDone to advance on Enter/Escape. This is a composite UX pattern from the tview presentation demo.

Background

Discovered while planning a tview presentation demo implementation via tviewyaml. The main app uses a Pages root with slide content; a bottom info bar has regions; when the highlighted region changes, the app switches pages. Slides use SetDoneFunc to advance.

Demo Usage

Info bar region-based page switching + slide-level SetDoneFunc; may need dedicated presentation mode.

Proposed Approach

• Depends on feat: support SetDoneFunc/onDone on primitives (TextView, InputField, Table) #5 (onDone) and feat: support SetHighlightedFunc for TextView region-based navigation #6 (SetHighlightedFunc)
• Option A: Add type: presentation root or page config that wires up info bar + pages + key bindings
• Option B: Provide template helpers or example YAML that users copy to achieve the pattern
• Option C: Document as a recipe combining existing features once feat: support SetDoneFunc/onDone on primitives (TextView, InputField, Table) #5 and feat: support SetHighlightedFunc for TextView region-based navigation #6 are implemented

Relevant Files

• config/types.go – optional presentation type
• builder/builder.go – presentation root builder
• example/config/ – presentation example
• docs/ – presentation mode recipe or guide