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Author SHA1 Message Date
Hartmut 4f0fe2c8c7 docs: update ROADMAP.md + USD plan after Phase B completion 
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-11 21:51:38 +01:00
Hartmut c1e1184c51 docs: record remaining USD architecture decisions (questions 2-4) 
- Q2: seam/sharp encoding → index-space primvars (not world-space KD-tree)
- Q3: preview GLB → co-author from tessellation pass (not USD->GLB round-trip)
- Q4: layer strategy → Option B (canonical + override layer), flatten via
  UsdUtils.FlattenLayerStack() to preserve instanceable prims for future
  bearing ball instancing optimization

All 5 open questions now decided. Priority 2 coding can start after Priority 1.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-11 15:16:09 +01:00
Hartmut cbffcfbf8b docs: record usd-core decision, add Dockerfile task 1.0 
- Mark USD library question as decided: usd-core>=24.11 (pxr module)
- Add Task 1.0 to USD implementation plan: Dockerfile install step
- Add usd-core to Priority 2 file targets in ROADMAP

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-11 15:13:10 +01:00
Hartmut 5d912594dd docs: add milestones, file targets, acceptance gates to all 10 ROADMAP priorities 
- Each priority now has: milestones (M1-MN), concrete file target table
  (CREATE/MODIFY/DELETE per file), and binary acceptance gates
- Created docs/plans/0001-step-to-usd-implementation.md: full execution
  checklist for USD pipeline (Priorities 2, 4, 5) with:
  - Phase 1: dual-write USD beside GLB
  - Phase 2: partKey + three-layer material assignment model
  - Phase 3: seam/sharp payload to USD mesh primvars (index-space)
  - Phase 4: Blender render from USD
  - Phase 5: frontend ThreeDViewer partKey migration
  - Open questions decision table
  - Non-regression checklist

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-03-11 15:10:45 +01:00