fix(design): standardize mobile breakpoint to <= 768 across all views

Align remaining 12 files with the corrected breakpoint from FINDING-005.
Using < 768 caused a 1px inconsistency at exactly 768px where CSS media
queries (max-width: 768px) triggered mobile but JS did not.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/modules/reports/views/FinancialIndicatorsView.vue

@@ -726,7 +726,7 @@ const authStore = useAuthStore();
 const router = useRouter();
 
 // Mobile detection
-const isMobile = ref(window.innerWidth < 768);
+const isMobile = ref(window.innerWidth <= 768);
 
 // UI state
 const showDrawer = ref(false);
@@ -856,7 +856,7 @@ const handleServerSwitched = async () => {
 
 // Handle window resize
 const handleResize = () => {
-  isMobile.value = window.innerWidth < 768;
+  isMobile.value = window.innerWidth <= 768;
 };
 
 // Lifecycle