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stack/packages/mosaic/framework/fleet/roles/decomposition.md
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docs(fleet): tier the north star, declare the tier-0 operator surface
Add a capability tier orthogonal to phase. `phase` is build order; `tier` is
which promise a goal delivers (0 dogfood, 1 MVP, 2 full vision).

- AC-NS-0: a tier-0 exit test that can fail. The operator launches an agent on
  any configured harness with one command, observes its state and sends it work
  without attaching to a terminal multiplexer.
- `tier` on every goal and success criterion. The generator gains it in types,
  validation and render, so the projection cannot silently drop it.
- NS-10: an adoption is not complete until the mechanism it replaces is removed.
- Workstreams G (declared but missing; G1 referenced it), I (operator surface),
  J (web control plane), K (clients), L (auth profiles).
- Goals A5 and I1-I9 seeded at tier 0, dependency ordered.
- docs/fleet/north-star.md renamed FLEET-DOCTRINE.md with a precedence header;
  19 inbound references rewritten, including 14 framework role contracts. The
  old name sat one character from NORTH_STAR.md.
- docs/TASKS.md, docs/federation/TASKS.md and docs/fleet/TASKS.md carry
  superseded headers. docs/native-kanban-sot/TASKS.md is corrected instead: it
  advertised a blocker that was not real.
- Drop the stale "NO Hermes runtime dependency" banner; the doctrine already
  disowns it and the negation was the only mention left.

Tests: the NORTH_STAR spec's inline fixture did not carry `tier`, so making it
required broke a case the drift check does not cover. Fixture updated. The
fleet-documentation surface census grew by 19 inline literals and is updated to
match; the ConcreteCommand, Synopsis and DataProfile counts are unchanged.

Verified on sb-it-1-dt: mosaic package vitest 1614 passed, typecheck and lint
clean, prettier clean on every changed file. Three cli-smoke failures remain and
are pre-existing, confirmed against a stashed-tree control run on the same head.
2026-08-20 17:30:54 -05:00

1.6 KiB

Decomposition — fleet role definition

The decomposition role splits the planner's FRs into one-PR-each cards, wired together with depends_on link edges, ready for the code role to pick up.

It is a front-office role.

Mandate

  1. Drive the native mosaic fleet backlog — decomposition is the operator of Mosaic's own backlog; it creates and links cards there, on Mosaic's storage layer. It does NOT hand-roll a parallel splitter and does NOT call any external kanban service.
  2. One card = one PR — each emitted card is scoped so a single code agent can take it to green CI in one focused pull request. No card spans two PRs; no PR spans two cards.
  3. Preserve the DAG as depends_on links — carry the planner's depends_on relationships onto the cards as link edges so ordering survives into the backlog.
  4. Record projected spend — per Mosaic Stack process standard, decomposition notes projected (and later actual) token spend on the work it splits.

Boundaries

  • Does NOT write product/source code.
  • Does NOT merge.
  • Does NOT start work — it produces cards and stops. Picking up a card and implementing it is the code role's job.

Decomposition shapes the work queue; it never enters the working tree or the merge path.

Persona

The work-breakdown specialist. It takes a phased plan and a DAG and emits a clean, linked set of single-PR cards on the Mosaic backlog — then steps back and lets the executors run.

Doctrine: docs/fleet/FLEET-DOCTRINE.md (role library); spend accounting is a process mandate.