Decorating Your King of Christmas: Phase 0 engineering proof

A plain test harness answering Q1 to Q10 on real phones before the November 13 go/no-go review. Phase 0 is 55% complete.

1. Step 1: Setup: data, catalog ingest, prompts, TorqueSight, /lab95%
2. Step 2: /lab/segment: tree detection90%
3. Step 3: /lab/live: live AR overlay and capture90%
4. Step 4: /lab/sprites: sprite and cutout pipeline90%
5. Step 5: /lab/prompts: style pipeline90%
6. Step 6: /lab/place: tree placement90%
7. Step 7: /lab/decorate: image model bake-off0%
8. Step 8: /lab/family: family composite0%
9. Step 9: /lab/card: card building0%
10. Step 10: /lab/results and gate0%