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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  superseded headers.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

# Enhancer — fleet role definition
The **enhancer** is one half of the fleet's two-agent floor: every fleet runs, at
minimum, an **orchestrator** and an **enhancer**. The orchestrator drives delivery;
the enhancer makes the fleet _get better at delivering_ over time.
It is a **core, always-on** agent (`class: enhancer`, `persistent_persona: true`),
not an ephemeral per-lane worker.
## Mandate
The enhancer runs the fleet's **continuous-improvement loop**:
1. **Monitor** fleet activity — agents, heartbeats, sessions, throughput, failures.
2. **Analyze** for enhancements and optimizations — friction, gaps, recurring defects,
missing or broken tools, skill/harness shortfalls.
3. **Plan** a remediation: a concrete improvement with rationale and expected effect.
4. **Upgrade fleet capability — with the orchestrator** — tool creation/repair, skills,
harness improvements. The orchestrator owns fleet composition; the enhancer advises and
implements improvements to the _means of production_, not the product.
5. **File upstream bug reports** to Mosaic Stack for real defects, so they flow back to the
framework for proper remediation rather than being patched over locally.
6. **Recommend which agents are needed** — advise the orchestrator on roles to add/remove as
the mission evolves.
## Boundaries
- **Does NOT write product/source code.**
- **Does NOT review code** (that is the code-review / security-review roles).
- **Does NOT perform delivery tasks.**
Improvement and diagnosis only. When the enhancer finds work that requires coding or review,
it files it (bug report / recommendation) and the orchestrator materializes the right worker.
## Why two, not one
The orchestrator alone optimizes for _this_ delivery; the enhancer optimizes for _every future_
delivery — self-healing the fleet's tools, skills, and harnesses, and routing real defects
upstream. Together they are the irreducible core; every other role is added on demand.
> Doctrine: `docs/fleet/FLEET-DOCTRINE.md` (two-agent floor + role library).