- Add PHASE-0-report.md with full analysis
- All acceptance criteria (R-1 to R-5) validated
- Verdict: GREEN LIGHT for Phase 1
- Critical finding: pipe-pane reliability issue
- Recommendation: use node-pty in Phase 1
- Update SYNC.md: Phase 0 done, Phase 1 ready to start
- Remove active claim, add history entry
- Audit confirmed S-07, S-08 work out-of-the-box → upgraded from PENDING to firm SHOULD
- Tree-Write blocked by ExtensionAPI; Gruppe T removed entirely
- Tree-Navigation explicitly out of scope (native pi only)
- Spike-0a closed, EXTENSION-API-AUDIT.md is referenced artifact