feat: add importance property to category breakdown and update team stats structure

hooks/use-teams-management.ts

@@ -61,7 +61,7 @@ export function useTeamsManagement(
       setTeams((prev) => [...prev, newLocalTeam]);
 
       // Ajouter les stats de la nouvelle équipe (avec les propriétés minimales)
-      const newTeamStats = {
+      const newTeamStats: TeamStats = {
         teamId: newTeam.id,
         teamName: newTeam.name,
         direction: newTeam.direction,
@@ -70,7 +70,11 @@ export function useTeamsManagement(
         skillCoverage: 0,
         topSkills: [],
         members: [],
-      } as TeamStats;
+        criticalSkillsCoverage: {
+          incontournable: 0,
+          majeure: 0,
+        },
+      };
       setTeamStats((prev) => [...prev, newTeamStats]);
       return true;
     } catch (error: any) {