express

# express The **express lane** for `size: XS` features (`${CLAUDE_PLUGIN_ROOT}/references/express-lane.md`). One born-die agent runs **intake → implement → verify in a single context** — no CP2→CP8 handoff chain, no sub-agents, no `acs.md`/`spec.md`/`plan.md`. The acceptance test is the spec; docs stay capped below code. Same tracker row and deterministic gates as any feature — just without the per-checkpoint re-prime that dominates a normal feature's cost. Runs *after* `feature-init` has created the `size: XS` feature (or a converged prototype landed at `prototype_disposition: in-place`). ## When to use - `feature-init` handed off a feature with `gate_profile.lane: express`. - A converged XS prototype (`in-place`) — the prototype code is the starting implementation. **Not for:** anything charter-flagged (payments/auth/migration/blast-radius), `autonomy_level: low`, or bigger than ~1 PR — those take the full pipeline. If you find yourself here on one of them, **escalate** (Step 5). ## Workflow Do the whole thing in one context. **No sub-agents, no inter-phase handoffs.** 0. **Resolve + branch** — root + manifest via `${CLAUDE_PLUGIN_ROOT}/scripts/dae_resolve.py`; load `feature.md` + `CHARTER.md` (+ `prototype/` if `in-place`). Enforce branch hygiene via `${CLAUDE_PLUGIN_ROOT}/scripts/dae_branch.py`. **Re-check the guardrails** — charter-flagged or `autonomy_level: low` → stop, hand to the full pipeline (`discover-acs`); express is not for those. 1. **Pin...