feat: add one-click nudge system with popover, throttling, and email notifications (Story 3.2)

Add NudgeController with 1-hour throttling per declaration, NudgePopover component
on declarations index and dashboard, shadcn-vue popover primitives, and per-declaration
nudge tracking. Owners/managers can nudge assigned workers with one click.
Includes 10 feature tests covering authorization, throttling, and cache invalidation.

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

app/Http/Controllers/DashboardController.php

@@ -34,6 +34,7 @@ class DashboardController extends Controller
                 'workspaceName' => null,
                 'roleLabel' => null,
                 'isWorker' => false,
+                'canNudge' => false,
                 'declarationsUrl' => null,
                 'clientsUrl' => null,
                 'viewAllAlertsUrl' => null,
@@ -50,6 +51,7 @@ class DashboardController extends Controller
             abort(404);
         }
 
+        $isWorker = $workspaceUser->role->is(WorkspaceUserRole::Worker);
         $cacheKey = "dashboard:{$workspace->id}:{$user->id}";
 
         $dashboardData = Cache::remember($cacheKey, 300, function () use ($workspace, $user, $workspaceUser) {
@@ -106,11 +108,11 @@ class DashboardController extends Controller
                 'statusLabel' => DeclarationStatus::labels()[$d->status->value] ?? $d->status->value,
                 'dueDate' => $d->due_date?->format('Y-m-d'),
                 'showUrl' => route('declarations.show', $d),
+                'nudgeUrl' => ! $isWorker ? route('declarations.nudge', $d) : null,
             ])
             ->all();
 
         $roleLabel = $this->roleLabels()[$workspaceUser->role->value] ?? $workspaceUser->role->value;
-        $isWorker = $workspaceUser->role->is(WorkspaceUserRole::Worker);
 
         $assigneeParam = $isWorker ? ['assignee' => $user->id] : [];
 
@@ -150,6 +152,7 @@ class DashboardController extends Controller
             'workspaceName' => $workspace->name,
             'roleLabel' => $roleLabel,
             'isWorker' => $isWorker,
+            'canNudge' => ! $isWorker,
             'declarationsUrl' => route('declarations.index'),
             'clientsUrl' => route('clients.index'),
             'viewAllAlertsUrl' => route('declarations.index', ['filter' => 'alerts']),