# Tasks — network-plugin-transport-manager

> Blocked on: `network-core`.

## 1. Scaffold

- [x] 1.1 `packages/network/network-plugin-transport-manager/` with `package.json`, `tsconfig.json`, `vitest.config.ts`, `README.md`.
- [x] 1.2 Workspace deps: `@suaveplan/network`, `@suaveplan/error`, `@suaveplan/types`, `@suaveplan/events`, `@suaveplan/timing`, `@suaveplan/rate-limiter`, `@opentelemetry/api`, `zod`.
- [x] 1.3 `sideEffects: false`.

## 2. Types

- [x] 2.1 `src/types/transport.types.ts` — `TransportEntry`, `TransportHealth`, `TransportCapability`.
- [x] 2.2 `src/types/priority.types.ts` — `MessagePriority`, `PriorityConfig`.
- [x] 2.3 `src/types/selector.types.ts` — `SelectorConfig`, `SelectionResult`.
- [x] 2.4 `src/error-codes.ts` — `defineCodes("NET_TM", [...])`.

## 3. Transport pool

- [x] 3.1 `src/pool/transport-pool.ts` — `TransportPool`.
- [x] 3.2 `register(transport)`, `unregister(transportId)`, `getHealth(transportId)`.
- [x] 3.3 Health score: 0–100 based on RTT, loss rate, stability.

## 4. Capability negotiator

- [x] 4.1 `src/negotiator/capability-negotiator.ts` — `CapabilityNegotiator`.
- [x] 4.2 Exchanges capability bitmap during `peer:connected`.
- [x] 4.3 Computes intersection of local and remote capabilities.

## 5. Transport selector

- [x] 5.1 `src/selector/transport-selector.ts` — `TransportSelector`.
- [x] 5.2 Selects transport based on priority + capability + health.
- [x] 5.3 CRITICAL: selects 2+ transports for redundant send.

## 6. Priority router

- [x] 6.1 `src/priority/priority-router.ts` — `PriorityRouter`.
- [x] 6.2 5 tiers: CRITICAL, HIGH, NORMAL, LOW, BULK.
- [x] 6.3 CRITICAL messages sent redundantly on 2+ transports.

## 7. Round-robin balancer

- [x] 7.1 `src/balancer/round-robin-balancer.ts` — `RoundRobinBalancer`.
- [x] 7.2 Distributes NORMAL and BULK across healthy transports.

## 8. Health monitor

- [x] 8.1 `src/health/transport-health-monitor.ts` — `TransportHealthMonitor`.
- [x] 8.2 Auto-pauses transport when health < threshold.
- [x] 8.3 Auto-resumes when health recovers.

## 9. Plugin wrapper

- [x] 9.1 `src/plugin/transport-manager-plugin.ts` — `TransportManagerPlugin` implements `NetworkPlugin`.

## 10. Spec

- [x] 10.1 Update `openspec/specs/network/spec.md` with `NET-TM` requirements.

## 11. Conformance tests

- [x] 11.1 `src/pool/pool.spec-conformance.test.ts` — registration, health, removal.
- [x] 11.2 `src/selector/selector.spec-conformance.test.ts` — priority, capability, health.
- [x] 11.3 `src/negotiator/negotiator.spec-conformance.test.ts` — exchange, intersection.
- [x] 11.4 `src/priority/priority.spec-conformance.test.ts` — 5 tiers, redundant CRITICAL.
- [x] 11.5 `src/balancer/balancer.spec-conformance.test.ts` — round-robin, distribution.
- [x] 11.6 `src/health/health.spec-conformance.test.ts` — degradation, pause, resume.
- [x] 11.7 `src/error-codes.spec-conformance.test.ts` — frozen registry.

## 12. Pre-emptive transport switching

- [x] 12.1 `src/analyzer/quality-trend-analyzer.ts` — `QualityTrendAnalyzer`, EMA slope for latency/loss/bandwidth.
- [x] 12.2 `src/selector/preemptive-selector.ts` — `PreemptiveSelector`, switches on trend before threshold.
- [x] 12.3 Smooth handoff: establish new before teardown, overlap window.

## 13. Session persistence

- [x] 13.1 `src/persistence/session-persistence-buffer.ts` — `SessionPersistenceBuffer`, buffers state during drops.
- [x] 13.2 `src/recovery/connection-recovery-manager.ts` — `ConnectionRecoveryManager`, exponential backoff with jitter.
- [x] 13.3 `src/recovery/session-continuity-guard.ts` — `SessionContinuityGuard`, replays buffered messages on recovery.
- [x] 13.4 Prioritized recovery: CRITICAL connections recover first.

## 14. Spec

- [x] 14.1 Update `openspec/specs/network/spec.md` with `NET-46`, `NET-60`.

## 15. Conformance tests

- [x] 15.1 `src/analyzer/analyzer.spec-conformance.test.ts` — trend detection, slope calculation.
- [x] 15.2 `src/selector/preemptive.spec-conformance.test.ts` — pre-emptive switch, smooth handoff.
- [x] 15.3 `src/persistence/persistence.spec-conformance.test.ts` — buffering, replay, sequence.
- [x] 15.4 `src/recovery/recovery.spec-conformance.test.ts` — backoff, jitter, continuity, priority.

## 16. Verify

- [x] 16.1 `bunx turbo lint typecheck test --filter=@suaveplan/network-plugin-transport-manager` green.
- [x] 16.2 `bunx turbo test:coverage --filter=@suaveplan/network-plugin-transport-manager` 100/100/100/100.
- [x] 16.3 `bun scripts/openspec-conformance.ts @suaveplan/network-plugin-transport-manager` PASS.