disinto/factory/best-practices/memory.md
johba 90ef03a304 refactor: make all scripts multi-project via env vars
Replace hardcoded harb references across the entire codebase:
- HARB_REPO_ROOT → PROJECT_REPO_ROOT (with deprecated alias)
- Derive PROJECT_NAME from CODEBERG_REPO slug
- Add PRIMARY_BRANCH (master/main), WOODPECKER_REPO_ID env vars
- Parameterize worktree prefixes, docker container names, branch refs
- Genericize agent prompts (gardener, factory supervisor)
- Update best-practices docs to use $-vars, prefix harb lessons

All project-specific values now flow from .env → lib/env.sh → scripts.
Backward-compatible: existing harb setups work without .env changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-14 13:49:09 +01:00

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# Memory Best Practices
## Environment
- VPS: 8GB RAM, 4GB swap, Debian
- Running: Docker stack (8 containers), Woodpecker CI, OpenClaw gateway
## Safe Fixes (no permission needed)
- Kill stale `claude` processes (>3h old): `pgrep -f "claude" --older 10800 | xargs kill`
- Drop filesystem caches: `sync && echo 3 | sudo tee /proc/sys/vm/drop_caches`
- Restart bloated Anvil: `sudo docker restart ${PROJECT_NAME}-anvil-1` (grows to 12GB+ over hours)
- Kill orphan node processes from dead worktrees
## Dangerous (escalate)
- `docker system prune -a --volumes` — kills CI images, hours to rebuild
- Stopping project stack containers — breaks dev environment
- OOM that survives all safe fixes — needs human decision on what to kill
## Known Memory Hogs
- `claude` processes from dev-agent: 200MB+ each, can zombie
- `dockerd`: 600MB+ baseline (normal)
- `openclaw-gateway`: 500MB+ (normal)
- Anvil container: starts small, grows unbounded over hours
- `forge build` with via_ir: can spike to 4GB+. Use `--skip test script` to reduce.
- Vite dev servers inside containers: 150MB+ each
## Lessons Learned
- After killing processes, always `sync && echo 3 | sudo tee /proc/sys/vm/drop_caches`
- Swap doesn't drain from dropping caches alone — it's actual paged-out process memory
- Running CI + full project stack = 14+ containers on 8GB. Only one pipeline at a time.