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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  superseded headers.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

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Markdown

# 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.