restore: bring back f8a1310 (security review) state

Restores all files to the f8a1310 security-review snapshot as requested,
plus the 2 boot-critical fixes from a24c8a2 (config/session.php env()
instead of app()->environment(), and removal of the duplicate $activeTab
in ProjectMap.php) so the application actually boots.

Forward commit, no history rewrite. The 7d854ff state remains in history.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/Livewire/PhaseList.php

@@ -5,6 +5,8 @@ namespace App\Livewire;
 use Livewire\Component;
 use App\Models\Project;
 use App\Models\Phase;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\Gate;
 
 class PhaseList extends Component
 {
@@ -13,16 +15,19 @@ class PhaseList extends Component
 
     public function mount(Project $project)
     {
+        Gate::authorize('edit projects', $project);
         $this->project = $project;
-        $this->phases = $project->phases;
+        $this->phases  = $project->phases;
     }
 
     public function addPhase()
     {
+        Gate::authorize('edit projects', $this->project);
+
         $this->project->phases()->create([
-            'name' => 'Nueva fase',
+            'name'  => 'Nueva fase',
             'order' => $this->phases->count() + 1,
-            'color' => '#'.substr(md5(rand()), 0, 6)
+            'color' => '#' . substr(md5(random_int(0, PHP_INT_MAX)), 0, 6),
         ]);
         $this->phases = $this->project->phases()->get();
         session()->flash('message', 'Fase agregada');
@@ -30,12 +35,20 @@ class PhaseList extends Component
 
     public function deletePhase($phaseId)
     {
-        Phase::find($phaseId)->delete();
+        Gate::authorize('edit projects', $this->project);
+
+        // Scope to this project to prevent IDOR deletion of another project's phase
+        Phase::where('id', $phaseId)
+            ->where('project_id', $this->project->id)
+            ->firstOrFail()
+            ->delete();
+
         $this->phases = $this->project->phases()->get();
+        session()->flash('message', 'Fase eliminada');
     }
 
     public function render()
     {
         return view('livewire.phase-list');
     }
-}
+}