Add HL3D branding, Etsy Live/Draft paging and Projects lifecycle

Replace the old touchmark/PNG identity with the supplied lockup and
monogram, segmented role-aware navigation, Live/Draft listing filters
with generation-based cache invalidation, and admin Projects covering
immutable file revisions, listing live pointers, and exact-decimal
filament/packaging/shipping costing. Additive schema only; no Etsy
publication. Isolated clone tests: 301 tests, 1162 assertions.

app/Models/ProjectEvent.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ProjectEvent extends Model
+{
+    public const UPDATED_AT = null;
+
+    protected $fillable = ['project_id', 'event_type', 'actor_id', 'subject_type', 'subject_id', 'metadata', 'created_at'];
+
+    protected function casts(): array
+    {
+        return [
+            'metadata' => 'array',
+            'created_at' => 'datetime',
+        ];
+    }
+
+    public function project(): BelongsTo
+    {
+        return $this->belongsTo(Project::class);
+    }
+
+    public function actor(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'actor_id');
+    }
+
+    public static function record(int $projectId, string $eventType, ?int $actorId, ?string $subjectType = null, ?int $subjectId = null, array $metadata = []): self
+    {
+        return self::create([
+            'project_id' => $projectId,
+            'event_type' => $eventType,
+            'actor_id' => $actorId,
+            'subject_type' => $subjectType,
+            'subject_id' => $subjectId,
+            'metadata' => $metadata,
+            'created_at' => now(),
+        ]);
+    }
+}