feat: implement Story 2.2 — Priority Alerts Panel with UI fixes

Add PriorityAlertsPanel component to the dashboard, update DashboardController
with alert logic, and apply misc UI fixes across sidebar, forms, and pages.
Includes epic-1 retrospective and sprint status update.

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

resources/js/types/dashboard.ts

@@ -25,12 +25,25 @@ export type StatCardLink = {
     href: string;
 };
 
+export type DashboardAlert = {
+    id: number;
+    severity: 'critical' | 'warning' | 'info';
+    clientName: string;
+    declarationType: string;
+    typeLabel: string;
+    daysValue: number;
+    daysLabel: string;
+    showUrl: string;
+};
+
 export type DashboardProps = {
     stats: DashboardStats | null;
     statCards: StatCardLink[];
     declarations: DashboardDeclaration[];
+    alerts: DashboardAlert[];
     workspaceName: string | null;
     roleLabel: string | null;
     declarationsUrl: string | null;
     clientsUrl: string | null;
+    viewAllAlertsUrl: string | null;
 };