docs(handoff): M1.5 kickoff — pickup prompt + workaround inventory
Comprehensive session-end handoff for picking up M1.5 in a fresh
session. Includes:
- Today's 11 shipped commits (table with retail oracle anchors)
- Visual verification status at Holtburg inn + cottages
- Open issues tagged M1.5 scope (#80, #81, #83, #88, #90, #93, #94)
- Workaround inventory with A6.P4 removal criteria:
- #90 sphere-overlap stickiness (PhysicsEngine.ResolveCellId:285)
- TryFindIndoorWalkablePlane synthesis (TransitionTypes.cs:1294)
- A6.P1 cdb probe spike methodology + 9 capture scenarios
- Pasteable session-start prompt
- Anti-patterns from today's session (especially: don't ship
workarounds without flagging them upfront — #90 was a slip)
- Code anchors + retail decomp anchors for A6 brainstorming
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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