# Gigafactory Phase 3 — Progress

| Slice | Name                                 | Status  | Commit | Verify Gate                                     |
| ----- | ------------------------------------ | ------- | ------ | ----------------------------------------------- |
| 1     | Tunable scoring weights + preemption | DONE    | TBD    | 119 fleet tests ✅, full build ✅, pnpm test ✅ |
| 2     | DAG job decomposition                | WIP     | —      | —                                               |
| 3     | Per-product budgets                  | pending | —      | —                                               |
| 4     | tracker-web Fleet Control Plane UI   | pending | —      | —                                               |
| 5     | Docs + roadmap                       | pending | —      | —                                               |

## Slice 1 — Tunable scoring weights + preemption

**Key files:**

- `services/platform-service/src/modules/fleet/scheduler.ts` — added `resolveWeights()`, `selectPreemptionVictim()`, `FleetWeightRegistry`, `RunningJobView`
- `services/platform-service/src/modules/fleet/coordinator.ts` — added `isPreemptionEnabled()`, `setWeightRegistry()`, seat-limit enforcement, preemption wiring

**Flags:** `FLEET_PREEMPTION` (default OFF = byte-for-byte Phase 2 behavior)

**Tests added:** 18 (14 scheduler pure + 4 coordinator integration)

- Weight resolution: defaults, partial override, per-request precedence, backward compat
- Preemption pure: critical evicts lower, never evicts equal/higher, picks lowest victim, capability checks
- Preemption integration: flag OFF no eviction, flag ON eviction + checkpoint preserved + zombie fenced + event

**Verify gate:** `pnpm --filter @lysnrai/platform-service exec vitest run src/modules/fleet` → 119/119 ✅; `pnpm build && pnpm test` → all green

## Follow-ups

- Weight registry could be loaded from Cosmos (per-product config doc) in a later phase
- Seat limit enforcement is tied to FLEET_PREEMPTION flag; could be decoupled later