fix(workstate): normalisation du work-state pour éviter l'onglet Work vide

Normalise l'état Work pour empêcher l'affichage d'un onglet Work vide.

QA VERT : tsc --noEmit exit 0 ; vitest run 42 fichiers / 407 tests passed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/adapters/workState.ts

@@ -9,9 +9,11 @@ import { invoke } from "@tauri-apps/api/core";
 
 import type { ProjectWorkState } from "@/domain";
 import type { WorkStateGateway } from "@/ports";
+import { normalizeProjectWorkState } from "./workStateNormalization";
 
 export class TauriWorkStateGateway implements WorkStateGateway {
-  getProjectWorkState(projectId: string): Promise<ProjectWorkState> {
-    return invoke<ProjectWorkState>("get_project_work_state", { projectId });
+  async getProjectWorkState(projectId: string): Promise<ProjectWorkState> {
+    const state = await invoke<unknown>("get_project_work_state", { projectId });
+    return normalizeProjectWorkState(state);
   }
 }