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/ProjectRelease.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Models;
+
+use Database\Factories\ProjectReleaseFactory;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ProjectRelease extends Model
+{
+    /** @use HasFactory<ProjectReleaseFactory> */
+    use HasFactory;
+
+    public const ACTION_RELEASE = 'release';
+
+    public const ACTION_REVERT = 'revert';
+
+    protected $fillable = [
+        'project_id', 'revision_id', 'cost_snapshot_id', 'action', 'released_by', 'released_at', 'notes',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'released_at' => 'datetime',
+        ];
+    }
+
+    public function project(): BelongsTo
+    {
+        return $this->belongsTo(Project::class);
+    }
+
+    public function revision(): BelongsTo
+    {
+        return $this->belongsTo(ProjectRevision::class, 'revision_id');
+    }
+
+    public function costSnapshot(): BelongsTo
+    {
+        return $this->belongsTo(ProjectCostSnapshot::class, 'cost_snapshot_id');
+    }
+
+    public function releasedBy(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'released_by');
+    }
+}