#2388 (plan-phase silently renames feature branch): add explicit Git
Branch Invariant section to plan-phase.md prohibiting branch
creation/rename/switch during planning; phase slug changes are
plan-level only and must not affect the git branch.
#2431 (worktree teardown silently swallows errors): replace
`git worktree remove --force 2>/dev/null || true` with a lock-aware
block in quick.md and execute-phase.md that detects locked worktrees,
attempts unlock+retry, and surfaces a user-visible recovery message
when removal still fails.
#2396 (hardcoded test commands bypass Makefile): add a three-tier
test command resolver (project config → Makefile/Justfile → language
sniff) in execute-phase.md, verify-phase.md, and audit-fix.md.
Makefile with a `test:` target now takes priority over npm/cargo/go.
#2376 (OpenCode @$HOME not mapped on Windows): add platform guard in
bin/install.js so OpenCode on win32 uses the absolute path instead of
`$HOME/...`, which OpenCode does not expand in @file references on
Windows.
Tests: 29 new assertions across 4 regression test files (all passing).
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
