3f8eb7406f
Skills are opt-in (I have to remember to invoke them). Hooks are
ambient — they fire on every matching event automatically. This PR
moves the careful-mode and learnings discipline from "doc I should
read" to "harness-enforced behavior I cannot bypass".
## 6 new hooks (.claude/hooks/)
- pre-bash-careful — REFUSES git push --force to main, rm -rf at root,
DROP TABLE against prod schema. WARNs on force-with-lease, gh pr/
issue close. Tested: blocks the destructive case, allows safe ones.
- pre-edit-freeze — implements /freeze. When .claude/freeze contains
a path glob, edits outside it are denied. Tested: edits to PLAN.md
blocked when scope locked to platform/internal/handlers/.
- session-start-context — auto-loads last 20 cron-learnings, freeze
status, open-PR/issue counts as additionalContext at session start.
Tested: emits valid SessionStart JSON.
- post-edit-audit — appends every Edit/Write to .claude/audit.jsonl
(gitignored). One-line records {ts, tool, file, ok}. Tested writes.
- user-prompt-tag — injects context warnings when prompt mentions
force-push, drop-table, "delete all", "push to main", etc. Tested:
emits warning for "force push the fix to main".
- subagent-stop-judge — off by default; touch .claude/judge-subagents
to enable. When on, prompts orchestrator to verify subagent's last
message addresses the original task. Cost-free MVP (no LLM call yet).
All hooks are Python (jq isn't on the hook PATH on macOS — Python is).
Shared helpers in _lib.py: read_input, deny_pretooluse, add_context,
warn_to_stderr.
## settings.json — wires all 6 hooks
Adds SessionStart, UserPromptSubmit, SubagentStop event handlers.
Existing PreToolUse:Bash + PostToolUse:Edit chains gain the new hooks
alongside the existing ones (check-inbox.sh, echo reminder).
Adds @modelcontextprotocol/server-sequential-thinking MCP server for
structured chain-of-thought scratchpad — useful when triaging multiple
PRs in parallel without losing context.
## .claude/commands/triage.md — slash command shortcut
Manual /triage runs the same flow as the c5074cd5 hourly cron, on
demand. Saves ~4KB of prompt every invocation by pulling the cron
prompt out of working memory.
## CLAUDE.md additions
New "Agent operating rules (auto-loaded — read first)" section right
after Ecosystem Context. Documents:
- Cron / triage discipline (read learnings, treat docs PRs touching
CLAUDE.md/PLAN.md as noteworthy, write per-tick reflections)
- Table of all 6 hooks active in this repo
- List of skills and how to invoke them
- Standing rules (inviolable) consolidated for the agent
This block auto-loads into every conversation context — free behavior
change without me remembering to opt in.
## .gitignore
audit.jsonl, freeze, judge-subagents, per-tick-reflections.md are all
local operational state, never committed.
## Verification
- echo '{"tool_input":{"command":"git push --force origin main"}}' |
bash pre-bash-careful.sh → emits deny JSON ✓
- Same for git status (safe command) → empty output, exit 0 ✓
- pre-edit-freeze with .claude/freeze=platform/handlers/ blocks
edits to PLAN.md, allows edits inside the locked path ✓
- post-edit-audit appends valid JSONL ✓
- session-start-context emits additionalContext with PR/issue counts ✓
- user-prompt-tag emits warning for "force push to main" prompt ✓
- python3 -c "json.load(open('.claude/settings.json'))" → valid ✓
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
72 lines
2.1 KiB
Python
Executable File
72 lines
2.1 KiB
Python
Executable File
#!/usr/bin/env python3
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"""SessionStart hook — auto-load recent cron-learnings, freeze status,
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and a one-line repo snapshot into Claude's context.
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"""
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import os
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import subprocess
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import sys
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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from _lib import add_context, warn_to_stderr # noqa
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REPO = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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LEARNINGS = os.path.expanduser(
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"~/.claude/projects/-Users-hongming-Documents-GitHub-molecule-monorepo/memory/cron-learnings.jsonl"
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)
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FREEZE = os.path.join(REPO, ".claude", "freeze")
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def tail(path: str, n: int) -> str:
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if not os.path.isfile(path):
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return ""
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try:
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with open(path) as f:
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lines = f.readlines()
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return "".join(lines[-n:]).rstrip()
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except Exception:
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return ""
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def gh_count(args: list) -> str:
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try:
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out = subprocess.run(
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["gh"] + args + ["--json", "number"],
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capture_output=True, text=True, timeout=4,
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)
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if out.returncode != 0:
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return "?"
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import json
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return str(len(json.loads(out.stdout or "[]")))
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except Exception:
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return "?"
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def main() -> None:
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parts = []
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learnings = tail(LEARNINGS, 20)
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if learnings:
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parts.append(f"## Recent cron learnings (last 20)\n{learnings}")
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if os.path.isfile(FREEZE):
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try:
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with open(FREEZE) as f:
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frozen = f.readline().strip()
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parts.append(f"## ⚠ FREEZE ACTIVE\nEdits restricted to: {frozen}\nRemove .claude/freeze to unlock.")
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except Exception:
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pass
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pr = gh_count(["pr", "list", "--repo", "Molecule-AI/molecule-monorepo", "--state", "open"])
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iss = gh_count(["issue", "list", "--repo", "Molecule-AI/molecule-monorepo", "--state", "open"])
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parts.append(f"## Repo state\nOpen PRs: {pr} · Open issues: {iss}")
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if parts:
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add_context("\n\n".join(parts))
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if __name__ == "__main__":
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try:
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main()
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except Exception as e:
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warn_to_stderr(f"[session-start hook error] {e}")
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sys.exit(0)
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