Progress Log

Append one entry per session.

2026-05-28 23:31

Item: F001
Summary: Created the codex/chore/dev-overhead-preview worktree, read the dev-overhead handoff, and confirmed the baseline smoke flow passes before implementation.
Files: docs/agent-runs/dev-overhead-preview/feature-list.json, docs/agent-runs/dev-overhead-preview/progress.md
Verification: ./scripts/agent-init.sh --smoke
Blockers: none
Next: Add the preview launcher and verify both dev and preview startup paths.

Item: F001
Summary: Added yarn start:preview, refactored shared Portless launcher helpers, and added a concise yarn start terminal note that points performance checks to the preview launcher.
Files: package.json, scripts/start-dev.js, scripts/start-preview.js, scripts/local-server-utils.mjs, docs/agent-runs/dev-overhead-preview/feature-list.json, docs/agent-runs/dev-overhead-preview/progress.md
Verification: corepack yarn install; node --check scripts/start-dev.js && node --check scripts/start-preview.js && node --check scripts/local-server-utils.mjs; BROWSER=none corepack yarn start; BROWSER=none corepack yarn start:preview; curl -k -I https://codex-chore-dev-overhead-preview.5chan.localhost; SMOKE_BASE_URL=https://codex-chore-dev-overhead-preview.5chan.localhost/#/ node scripts/smoke-web-app.js; playwright-cli Chrome /pol thread/back timing (back: 170ms, 125ms, 120ms); playwright-cli Firefox/WebKit /pol load checks; corepack yarn build; corepack yarn lint; corepack yarn type-check; corepack yarn knip; PORTLESS=0 BROWSER=none PORT=4990 corepack yarn start:preview; curl -I http://127.0.0.1:4990
Blockers: none
Next: Review the diff and decide whether to also make dev-only react-scan/element-source opt-in in a separate, workflow-synced change.