fix: Remove double .data access in dashboard hooks causing undefined data

CRITICAL BUG FIX: This was the ACTUAL root cause of infinite loading state!

The Bug:
--------
apiClient.get() already returns response.data (line 494 in apiClient.ts):
```typescript
async get<T>(url: string): Promise<T> {
  const response = await this.client.get(url);
  return response.data;  // Returns data directly
}
```

But hooks were doing:
```typescript
queryFn: async () => {
  const response = await apiClient.get('/endpoint');
  return response.data;  // Bug! Accessing .data on data = undefined
}
```

Flow of the Bug:
----------------
1. API call succeeds with 200 OK
2. apiClient.get() returns: {status: "green", headline: "..."}
3. Hook tries to access .data on that object
4. Returns undefined to React Query
5. Component checks: if (!healthStatus) → true (because undefined)
6. Shows skeleton loader forever

The Fix:
--------
Changed all 5 hooks to:
```typescript
queryFn: async () => {
  return await apiClient.get('/endpoint');  // ✅ Returns data directly
}
```

Now:
1. API call succeeds with 200 OK
2. apiClient.get() returns: {status: "green", headline: "..."}
3. Hook returns data to React Query
4. React Query sets data
5. Component receives data → exits loading state
6. Dashboard renders! 🎉

Fixed hooks:
- useBakeryHealthStatus
- useOrchestrationSummary
- useActionQueue
- useProductionTimeline
- useInsights

Previous fixes that were needed but insufficient:
- Added enabled: !!tenantId (prevented queries when tenantId empty)
- Added useTenantInitializer (populated tenantId)
- But data was still undefined due to this .data bug!

frontend/src/api/hooks/newDashboard.ts

@@ -152,10 +152,9 @@ export function useBakeryHealthStatus(tenantId: string) {
   return useQuery<BakeryHealthStatus>({
     queryKey: ['bakery-health-status', tenantId],
     queryFn: async () => {
-      const response = await apiClient.get(
+      return await apiClient.get(
         `/tenants/${tenantId}/dashboard/health-status`
       );
-      return response.data;
     },
     enabled: !!tenantId, // Only fetch when tenantId is available
     refetchInterval: 30000, // Refresh every 30 seconds
@@ -174,11 +173,10 @@ export function useOrchestrationSummary(tenantId: string, runId?: string) {
     queryKey: ['orchestration-summary', tenantId, runId],
     queryFn: async () => {
       const params = runId ? { run_id: runId } : {};
-      const response = await apiClient.get(
+      return await apiClient.get(
         `/tenants/${tenantId}/dashboard/orchestration-summary`,
         { params }
       );
-      return response.data;
     },
     enabled: !!tenantId, // Only fetch when tenantId is available
     staleTime: 60000, // Summary doesn't change often
@@ -196,10 +194,9 @@ export function useActionQueue(tenantId: string) {
   return useQuery<ActionQueue>({
     queryKey: ['action-queue', tenantId],
     queryFn: async () => {
-      const response = await apiClient.get(
+      return await apiClient.get(
         `/tenants/${tenantId}/dashboard/action-queue`
       );
-      return response.data;
     },
     enabled: !!tenantId, // Only fetch when tenantId is available
     refetchInterval: 60000, // Refresh every minute
@@ -217,10 +214,9 @@ export function useProductionTimeline(tenantId: string) {
   return useQuery<ProductionTimeline>({
     queryKey: ['production-timeline', tenantId],
     queryFn: async () => {
-      const response = await apiClient.get(
+      return await apiClient.get(
         `/tenants/${tenantId}/dashboard/production-timeline`
       );
-      return response.data;
     },
     enabled: !!tenantId, // Only fetch when tenantId is available
     refetchInterval: 60000, // Refresh every minute
@@ -238,10 +234,9 @@ export function useInsights(tenantId: string) {
   return useQuery<Insights>({
     queryKey: ['dashboard-insights', tenantId],
     queryFn: async () => {
-      const response = await apiClient.get(
+      return await apiClient.get(
         `/tenants/${tenantId}/dashboard/insights`
       );
-      return response.data;
     },
     enabled: !!tenantId, // Only fetch when tenantId is available
     refetchInterval: 120000, // Refresh every 2 minutes