Plan: Fix unit test failures on rc/multi-tenant#

Summary#

Fix 2 failing test suites (8 failures total) caused by the pipeline refactor that removed the execute phase and a missing @nestjs/websockets dependency. All watchdog test fixtures reference currentPhase: 'execute' which no longer exists in PHASE_ORDER, and the ws-gateway spec cannot resolve its gateway import.

Files#

File	Action	Description
`src/watchdog/watchdog.service.spec.ts`	modify	Replace `currentPhase: 'execute'` with `'deliver'` in 5 test fixtures; update phase assertions
`src/ws-gateway/ws-gateway.gateway.ts`	inspect	Verify `@nestjs/websockets` import — root cause of suite failure
`package.json`	modify	Add `@nestjs/websockets` + `@nestjs/platform-ws` as dependencies (if missing)

Steps#

Replace 'execute' phase references in watchdog spec — change currentPhase: 'execute' to 'deliver' in all 5 affected test fixtures (lines 77, 100, 197, 226, 252, 295); update corresponding assertion strings (phase: 'execute' -> 'deliver') at lines 91, 266, 305.
Install missing @nestjs/websockets dependency — add @nestjs/websockets and @nestjs/platform-ws to package.json so the ws-gateway module resolves correctly.
Run npm test, tsc --noEmit, and npm run lint — verify all 44 suites pass with zero failures.

Verification#

npm test — 0 failures, all 44 suites pass
tsc --noEmit — no type errors
npm run lint — zero warnings

Risks#

The @nestjs/websockets missing dependency may be intentional (optional module) — if so, the ws-gateway spec should be skipped or the import mocked instead of adding the dependency.