molecule-ai-plugin-molecule.../hooks/session-start-context.py
Hongming Wang a3cb0a7aba
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import from local vendored copy (2026-05-06)
2026-05-06 13:53:31 -07:00

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Python
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#!/usr/bin/env python3
"""SessionStart hook — auto-load recent cron-learnings, freeze status,
and a one-line repo snapshot into Claude's context.
"""
import os
import subprocess
import sys
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from _lib import add_context, warn_to_stderr # noqa
REPO = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
LEARNINGS = os.path.expanduser(
"~/.claude/projects/-Users-hongming-Documents-GitHub-molecule-monorepo/memory/cron-learnings.jsonl"
)
FREEZE = os.path.join(REPO, ".claude", "freeze")
def tail(path: str, n: int) -> str:
if not os.path.isfile(path):
return ""
try:
with open(path) as f:
lines = f.readlines()
return "".join(lines[-n:]).rstrip()
except Exception:
return ""
def gh_count(args: list) -> str:
try:
out = subprocess.run(
["gh"] + args + ["--json", "number"],
capture_output=True, text=True, timeout=4,
)
if out.returncode != 0:
return "?"
import json
return str(len(json.loads(out.stdout or "[]")))
except Exception:
return "?"
def main() -> None:
parts = []
learnings = tail(LEARNINGS, 20)
if learnings:
parts.append(f"## Recent cron learnings (last 20)\n{learnings}")
if os.path.isfile(FREEZE):
try:
with open(FREEZE) as f:
frozen = f.readline().strip()
parts.append(f"## ⚠ FREEZE ACTIVE\nEdits restricted to: {frozen}\nRemove .claude/freeze to unlock.")
except Exception:
pass
pr = gh_count(["pr", "list", "--repo", "Molecule-AI/molecule-monorepo", "--state", "open"])
iss = gh_count(["issue", "list", "--repo", "Molecule-AI/molecule-monorepo", "--state", "open"])
parts.append(f"## Repo state\nOpen PRs: {pr} · Open issues: {iss}")
if parts:
add_context("\n\n".join(parts))
if __name__ == "__main__":
try:
main()
except Exception as e:
warn_to_stderr(f"[session-start hook error] {e}")
sys.exit(0)