* fix(#3097, #3099): add cwd-drift + absolute-path guards to executor worktree protocol
#3097 — cwd-drift sentinel (gsd-executor.md task_commit_protocol step 0a):
A Bash cd out of the worktree makes [ -f .git ] false, silently skipping
all HEAD/branch safety guards. Commits land on main's branch.
Fix: on first commit, capture spawn-time toplevel into sentinel file at
.git/worktrees/<name>/gsd-spawn-toplevel. Before every subsequent commit,
verify ACTUAL_TL matches EXPECTED_TL. Exits 1 with recovery instructions
if drift detected.
#3099 — absolute-path guard (gsd-executor.md task_commit_protocol step 0b):
Absolute paths constructed from the orchestrator's pwd (main repo root)
resolve to the main repo inside worktrees. Edit/Write lands in wrong dir;
git commit sees a clean worktree tree; work silently lost or leaks to main.
Fix: before any absolute-path Edit/Write, verify path starts with
WT_ROOT=/Users/thbouc/projects/get-shit-done. Prefer relative paths.
Both guards are documented in references/worktree-path-safety.md, which
is now loaded into every executor spawn prompt via <execution_context>.
The <worktree_branch_check> footnote references all three steps (0/0a/0b).
execute-phase.md: extracted worktree bash commands to reference file
(safe embed — @ files are inlined before the executor processes the prompt).
The blank line in <required_reading> was removed to stay at the XL=1700 line
budget after adding the @ reference.
Suite: 6986/6986. Closes#3097. Closes#3099.
* fix(lint+executor+docs): allow-test-rule, fix [ -f .git ] guard, fail-closed abs-path check, fix INVENTORY count