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popiart-node-canvas/.planning/phases/25-template-explorer-ui/25-02-SUMMARY.md

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phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established issues-created duration completed
25-template-explorer-ui 2 ui [templates filters search modal react-flow] {phase 25-01} {provides TemplateCard component, TemplateExplorerView grid, template types} [Sidebar filter panel with search, category, and tag filters WelcomeModal integration with TemplateExplorerView Scrollable template gallery with React Flow wheel event isolation] [quickstart templates] [{added []} {patterns [onWheelCapture for isolating scroll from React Flow min-h-0 for flexbox scroll containers overflow-clip vs overflow-hidden for wheel events]}] [{created []} {modified [src/components/quickstart/TemplateExplorerView.tsx src/components/quickstart/TemplateCard.tsx src/components/quickstart/WelcomeModal.tsx]}] [Two-column grid layout for template cards Single static thumbnail (not carousel) - ready for future GIF replacement Darker sidebar background (bg-neutral-900/80) for visual separation onWheelCapture to prevent React Flow from capturing scroll events] [Use onWheelCapture on modals overlaying React Flow to enable scrolling Use min-h-0 on flex containers to enable overflow scrolling Use overflow-clip instead of overflow-hidden when child needs scroll] [] 15min 2026-01-16

Phase 25 Plan 02: Sidebar Filters & WelcomeModal Integration Summary

Template explorer with sidebar filters, 2-column card layout, static thumbnails, and scroll isolation from React Flow

Performance

  • Duration: 15 min
  • Started: 2026-01-16T21:30:00Z
  • Completed: 2026-01-16T21:55:00Z
  • Tasks: 3
  • Files modified: 3

Accomplishments

  • Added left sidebar with search input, category filters (All/Product/Style/Composition/Community), and tag filter pills
  • Integrated TemplateExplorerView into WelcomeModal, replacing QuickstartTemplatesView
  • Fixed scroll issues caused by React Flow capturing wheel events using onWheelCapture
  • Added single static thumbnail images to template cards (ready for future GIF replacement)

Task Commits

Each task was committed atomically:

  1. Task 1: Add sidebar filter panel - a0319e6 (feat)
  2. Task 2: Integrate into WelcomeModal - cf27f8d (feat)
  3. Layout improvements (2-col, thumbnails, colors) - f25826b (feat)
  4. Simplify to single thumbnail - aab4c96 (refactor)
  5. Scroll fixes (multiple iterations) - afb667c, aae10c9, 21bc34e, 7aad874, 998c3ee, 024f3a9 (fix)

Plan metadata: (this commit)

Files Created/Modified

  • src/components/quickstart/TemplateExplorerView.tsx - Added sidebar with filters, 2-column layout, scroll fixes
  • src/components/quickstart/TemplateCard.tsx - Added previewImage prop, static thumbnail display
  • src/components/quickstart/WelcomeModal.tsx - Replaced QuickstartTemplatesView, added onWheelCapture

Decisions Made

  • Two-column layout chosen over 3-column for better visual balance with thumbnails
  • Single static thumbnail (first image from template content) instead of animated carousel - simpler, ready for GIF replacement
  • Darker sidebar background (bg-neutral-900/80) creates visual separation from main content
  • onWheelCapture pattern discovered for isolating modal scroll from React Flow canvas

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Scroll not working in template gallery

  • Found during: Task 3 (human verification)
  • Issue: Touchpad/wheel scrolling didn't work, only manual scrollbar drag worked
  • Fix: Multiple iterations - added min-h-0 to flex containers, changed overflow-hidden to overflow-clip, finally used onWheelCapture to stop React Flow from capturing wheel events
  • Files modified: TemplateExplorerView.tsx, WelcomeModal.tsx
  • Verification: User confirmed scrolling works with touchpad
  • Committed in: Multiple fix commits (afb667c through 024f3a9)

Total deviations: 1 auto-fixed (blocking scroll issue requiring 6 fix iterations) Impact on plan: Scroll fix was essential for usability. Discovered important pattern for React Flow + modal interactions.

Issues Encountered

  • React Flow captures wheel events at document level, preventing scroll in overlaying modals
  • Solution: Use onWheelCapture (capture phase) to stop propagation before React Flow receives events
  • This is a reusable pattern for any scrollable modal over React Flow canvas

Next Phase Readiness

  • Phase 25 complete - Template Explorer UI fully functional
  • Ready to continue with Phase 26 (Template Preview Rendering) or complete Phase 24-03 (CostDialog UI)

Phase: 25-template-explorer-ui Completed: 2026-01-16