Merges FN-3278 review tab direct-mode (data, rendering, regression tests, typing fixes, and docs across Steps 2/3/6), FN-3750 mobile keyboard stabilization for mailbox and reply composer, FN-3751 fire-and-forget wake dispatch to prevent request hangs, and FN-3748 workspace aliases for @fusion/* pack
Fusion-Task-Id: FN-3278
The merge consolidates mock helpers across packages by creating a new shared `mockCoreEngine.ts` in the CLI package and strengthening the core/engine helpers, then migrating both CLI command tests and the dashboard's `AgentsView` tests to use the canonical helpers. It also publishes SSE architecture
Fusion-Task-Id: FN-3053
This merge introduces canonical mock helper modules across the dashboard and engine packages, and migrates representative test suites to use them for consistency. The changes add four new mock helpers (`mockApi.ts`, `mockLucide.ts`, `mockCore.ts`, `mockCoreEngine.ts`) and harden the API mock proxy's
Fusion-Task-Id: FN-3044
