Add git pre-commit hook for task enforcement

2026-06-13 17:55:39 -04:00
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+# SPEC: Git Pre-Commit Hook for Task Enforcement
+
+## Overview
+
+The `.rules.md` says "All changes must go through a task in tasks/{name}/" but nothing enforces it. The agent repeatedly makes ad-hoc edits and only creates tasks retroactively (or not at all). A pre-commit git hook mechanically blocks commits that lack a corresponding task.
+
+## Root Cause
+
+The rule is passive (a file on disk) and relies on the agent remembering to check it. Every session starts fresh — past failures don't carry over. The agent has no active enforcement.
+
+## Solution
+
+A `scripts/pre-commit-hook.sh` that:
+
+1. Gets the list of changed files (staged + unstaged)
+2. Checks if there's a task in `tasks/` whose SPEC.md keywords match the changed files   
+3. If no matching task found, prints the changed files and asks: "Continue without a task? (y/N)"
+4. If the user says no, exits non-zero and blocks the commit
+
+The hook is installed via `scripts/install-hooks.sh` which copies it to `.git/hooks/pre-commit`.
+
+## Files
+
+- `scripts/pre-commit-hook.sh` — the hook script
+- `scripts/install-hooks.sh` — installer
+
+## Acceptance Criteria
+
+- [ ] `scripts/pre-commit-hook.sh` blocks commits that change files without a matching task
+- [ ] `scripts/install-hooks.sh` installs the hook into `.git/hooks/pre-commit`
+- [ ] Hook allows commits when user confirms (y) despite no task
+- [ ] Hook allows commits when a matching task exists in tasks/
+- [ ] README updated to mention hook installation
+
+## Why This Fix Works
+
+A pre-commit hook runs before every commit. The agent cannot bypass it without intentionally deciding to — and even then, the prompt forces conscious acknowledgment ("Continue without a task?") rather than simply forgetting.