plan: add 8-hour accelerated timeline; maintain TDD across milestones

collab/plan/01-codexhelper.md

@@ -58,7 +58,15 @@ Purpose: Deliver Phase 1 (Crawl) MVP of CodexHelper: subcommands, scaffolding, p
  - bats-core availability assumed; if not present, document installation and provide graceful skip with clear message.
 
 ## Timeline (targeted)
-- Day 1: Milestones 1–3
-- Day 2: Milestones 4–5
-- Day 3: Milestone 6 + Docs
+Accelerated (8 hours today):
+- Hour 0–1: Test harness setup; write failing smoke tests (CLI, guardrails)
+- Hour 1–2: Milestone 1 — CLI skeleton + guardrails (make tests pass)
+- Hour 2–3: Milestone 2 — Binary detection + pass-through (tests first)
+- Hour 3–4: Milestone 3 — new-mode scaffolder (tests first)
+- Hour 4–6: Milestone 4 — new-project scaffolder (tests first)
+- Hour 6–7: Milestone 5 — run: compose + invoke (tests first)
+- Hour 7–8: Milestone 6 — Config precedence (tests first); write quickstart docs
+
+Notes:
+- If behind schedule, defer non-essential docs to a follow-up commit and prioritize tested functionality.
  - Ongoing: Maintain/expand tests with each feature change (TDD).