security: fix 27 vulnerabilities + UI integration (Issues tab, project nav, validation)

Security fixes (27 vulnerabilities across 20 files):
CRITICAL:
- MediaManager: whitelist mediable types prevents RCE via class instantiation
- MediaManager/OfflineSyncController: IDOR fixes, remove Auth::id()??1 fallback
- ClientProjects: verify project ownership on all mutations (IDOR)
- CompanyManagement: Admin role check on mount() and mutations (auth bypass)
- ProjectMap: scope feature/template lookups to current project (IDOR x5)
- PhaseList/TemplateManager/LayerManager: scope mutations to owned resources (IDOR)
- ProjectEditTabs: Gate::authorize on mount() and updateProject()
- routes/web.php: reports routes moved inside can:manage all middleware (auth bypass)

MEDIUM:
- layer-manager: escapeHtml() on Leaflet popup interpolations (XSS)
- MediaManager: server-side MIME validation + 50MB limit
- ProjectList/ProjectUsers/ProjectCompanies/PhaseProgress: auth checks added
- AdminUsers/ReportsDashboard/ExportController: role/permission checks added

LOW:
- config/session.php: secure cookie tied to production env
- OfflineSyncController: sanitize storage path (path traversal)

UI integration:
- project-map: Issues tab (4th) with open-count badge
- project-map: project navigation bar (Dashboard/Map/Gantt/Report/Issues)
- project-dashboard: action buttons for Map/Gantt/Report/Issues
- project-form: validation error summary + per-field @error spans
- template-manager: validation error display

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Livewire/PhaseProgress.php

@@ -4,6 +4,7 @@ namespace App\Livewire;
 
 use Livewire\Component;
 use App\Models\Phase;
+use Illuminate\Support\Facades\Auth;
 
 class PhaseProgress extends Component
 {
@@ -13,12 +14,21 @@ class PhaseProgress extends Component
 
     public function mount(Phase $phase)
     {
+        $user = Auth::user();
+        if (!$user->hasRole('Admin') && !$phase->project->users()->where('user_id', $user->id)->exists()) {
+            abort(403);
+        }
         $this->phase = $phase->load('progressUpdates');
         $this->progress = $phase->progress_percent;
     }
 
     public function updateProgressManual()
     {
+        $user = Auth::user();
+        if (!$user->can('update progress') && !$user->hasRole('Admin')) {
+            session()->flash('error', 'Sin permisos para actualizar el progreso.');
+            return;
+        }
         $this->validate(['progress' => 'required|integer|min:0|max:100']);
         $this->phase->progress_percent = $this->progress;
         $this->phase->save();