David Gwilliam d54147cfb4 fix: DisplayStage dependency and render pipeline data flow ...

Critical fix for display rendering:

1. DisplayStage Missing Dependency
   - DisplayStage had empty dependencies, causing it to execute before render
   - No data was reaching the display output
   - Fix: Add 'render.output' dependency so display comes after render stages
   - Now proper execution order: source → render → display

2. create_default_pipeline Missing Render Stage
   - Default pipeline only had source and display, no render stage between
   - Would fail validation with 'Missing render.output' capability
   - Fix: Add SourceItemsToBufferStage to convert items to text buffer
   - Now complete data flow: source → render → display

3. Updated Test Expectations
   - test_display_stage_dependencies now expects 'render.output' dependency

Result: Display backends (pygame, terminal, websocket) now receive proper
rendered text buffers and can display output correctly.

Tests: All 502 tests passing

2026-03-16 21:59:52 -07:00

18 KiB

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