ConcertoNotes Plan
docs/staging/plans/YYYY-MM-DD-<topic>.md. Reference the spec; don't restate it.
If unresolved spec notes affect implementation or task order, return to design.
Rolling wave
Spec references a milestone (milestone: MN)? Check docs/ROADMAP.md — expand only that milestone. Leave the rest as stubs.
After ship: open docs/ROADMAP.md, confirm which milestone is next, then expand it. Return to design only if the milestone's goal materially changed.
Milestone tasks (30-60 min each)
Every task is - [ ] T<n>: <name> - always a checkbox, never a heading. tdd/subagents flip it to - [x] on completion; ship refuses to run while any - [ ] remains.
goal: <one sentence>
files: <paths>
acceptance: <test or cmd>
spec: <docs/staging/specs/...#anchor>
No exact code. No step-by-step. Acceptance is verifiable: a test, command, or scripted check — or, when none is possible, an explicit manual check (steps + expected result). Each task leaves the repo green.
Mark independent tasks: [parallel] T3, T4, T5.
Only mark [parallel] when shared contracts, state, errors, and acceptance are closed.
Atomic expansion is deferred until dispatch time - subagents expands a milestone into 2-5 min steps at dispatch time, not here.
for New project: derive an initialization task — scaffold code, tests, CI, and always include: README.md, CHANGELOG.md, .gitignore, and a Makefile (or equivalent task runner config).
Don't put in the plan
background, architecture, rationale (spec), CI commands, copy-pasted acceptance.
Hand off
<gate> docs/staging/plans/YYYY-MM-DD-<topic>.md must exist on disk before handing off to tdd/subagents.</gate>
Confirm plan with the user.
mostly [parallel] -> subagents. Otherwise -> tdd.