sac-session

name	sac-session
description	Open or close an isolated second-brain write session (worktree + PR). Use before scanning or materializing architecture when multiple agents share one knowledge remote.

sac-session

When

• More than one agent or machine writes the shared second brain
• The current project worktree is not the knowledge repo
• The user asks to isolate writes, open a knowledge PR, or avoid clobbering main

Open

python3 "${CLAUDE_PLUGIN_ROOT}/scripts/brain_session.py" open \
  --repo . \
  --bundle knowledge \
  --actor "${SECOND_BRAIN_IDENTITY:?claim an identity first}" \
  --plugin system-architecture-capture \
  --host claude-code

Export SECOND_BRAIN_ROOT and BRAIN_SESSION_ID from the JSON. All writes go to that bundle via scripts/sac_*.py.

Close

python3 "${CLAUDE_PLUGIN_ROOT}/scripts/brain_session.py" close \
  --repo . \
  --session "${BRAIN_SESSION_ID}"

Pushes to whatever remote the checkout already has and opens a PR when gh is available. Never force-push. Never invent a remote URL.

Rules

• Read shared truth from main. Overlay this session only.
• Do not pack other agents' open branches.
• Public examples use fictional lumenfield-detector and northstar-console only.
• See docs/ISOLATION.md.