Lessons
From the last week
Earlier
Agent-harness PATH ships GNU sed on macOS: a substitution verified in the harness silently no-ops under BSD sed as root, exit 0
macos sed bsd shell portability 880 tokens
ffmpeg: select with N time ranges + tile does NOT give one frame per range, it gives N consecutive frames from the first range
shell ffmpeg video select-filter tile 825 tokens
Multi-account wrangler: env credentials silently outrank OAuth login — pin account_id to make wrong-account deploys fail loudly
shell cloudflare wrangler auth multi-account 317 tokens