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popiart-node-canvas/.planning/phases/06-video-and-polish/06-04-SUMMARY.md

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Phase 6 Plan 4 Summary: Error Handling & Polish

Completed: 2026-01-11 Plan: .planning/phases/06-video-and-polish/06-04-PLAN.md

Completed Tasks

Task 1: Improve Error Handling and Loading States

  • Added modelsFetchError state to GenerateImageNode and GenerateVideoNode
  • Added retry button when model fetch fails
  • Improved API error messages to include model name
  • Added rate limit (429) handling

Task 2: Parameter Validation and Defaults

  • Added inline validation for number/integer params with min/max bounds
  • Red border and error text for invalid values
  • Clear parameters when switching provider/model

Task 3: Final Cleanup and Testing

  • Added @deprecated JSDoc to NanoBananaNode alias
  • Added @deprecated to saveNanoBananaDefaults function
  • Build verification passed

Task 4: Human Verification

  • UAT completed with user testing
  • UAT-001 (fal.ai schema 404) discovered and fixed during verification
  • Two future enhancements logged

UAT Results

Passed:

  • Pre-flight checks
  • Text-to-video generation
  • Error handling UI
  • Backward compatibility
  • Video download

Fixed During UAT:

  • fal.ai parameter schema loading (was using wrong API endpoint)

Future Enhancements Logged

  1. ENHANCE-001: Dynamic model input handles based on schema

    • Models like Kling 2.6 support multiple inputs (first/last frame, positive/negative prompt)
    • Currently nodes have fixed generic inputs

  2. ENHANCE-002: Auto-resize node when expanding Parameters section

    • Node height doesn't adjust when Parameters expands
    • User must manually resize

Commits

  • 2810572 - feat(06-04): improve error handling for model fetching
  • 609ce62 - feat(06-04): add parameter validation with inline errors
  • d5c777c - chore(06-04): add deprecation notices to legacy aliases
  • e8fe721 - fix(06-04): handle fal.ai 404 gracefully for models without schema
  • 913e6ee - fix(06-04): use fal.ai Model Search API for parameter schema
  • f59f4b0 - fix(06-04): correct fal.ai schema parsing for Model Search API
  • 8659c3a - docs(06-04): log UAT results and future enhancements

Status

COMPLETE - Phase 6 Plan 4 finished with all tasks done and UAT passed.