feat: activity logging for name operations

NameActivity model with log() static method. Stores event, name,
properties (JSON), and hashed IP (GDPR). SubmitClaim action now
logs 'claimed' event. Ready for dns_updated, registered, etc.

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

app/Mod/Names/Actions/SubmitClaim.php

@@ -6,6 +6,7 @@ namespace Mod\Names\Actions;
 
 use Illuminate\Validation\ValidationException;
 use Mod\Chain\Services\DaemonRpc;
+use Mod\Names\Models\NameActivity;
 use Mod\Names\Models\NameClaim;
 
 /**
@@ -27,10 +28,17 @@ class SubmitClaim
 
         $this->validate($name, $email);
 
-        return NameClaim::create([
+        $claim = NameClaim::create([
             'name' => $name,
             'email' => $email,
         ]);
+
+        NameActivity::log($name, 'claimed', [
+            'claim_id' => $claim->claim_id,
+            'email' => $email,
+        ], request()?->ip());
+
+        return $claim;
     }
 
     private function validate(string $name, string $email): void

app/Mod/Names/Migrations/2026_04_04_create_name_activity_table.php

@@ -0,0 +1,25 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('name_activity', function (Blueprint $table) {
+            $table->id();
+            $table->string('name')->index();
+            $table->string('event', 50)->index();
+            $table->json('properties')->nullable();
+            $table->string('ip_hash', 64)->nullable();
+            $table->timestamp('created_at')->useCurrent();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('name_activity');
+    }
+};

app/Mod/Names/Models/NameActivity.php

@@ -0,0 +1,55 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mod\Names\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+/**
+ * Activity log for name operations.
+ *
+ *   NameActivity::log('mybrand', 'registered', ['address' => '...']);
+ *   NameActivity::log('mybrand', 'dns_updated', ['records' => [...]]);
+ *   $recent = NameActivity::forName('mybrand')->latest()->get();
+ */
+class NameActivity extends Model
+{
+    public $timestamps = false;
+
+    protected $table = 'name_activity';
+
+    protected $fillable = [
+        'name',
+        'event',
+        'properties',
+        'ip_hash',
+        'created_at',
+    ];
+
+    protected $casts = [
+        'properties' => 'array',
+        'created_at' => 'datetime',
+    ];
+
+    public function scopeForName($query, string $name)
+    {
+        return $query->where('name', $name);
+    }
+
+    /**
+     * Log a name activity event.
+     *
+     *   NameActivity::log('mybrand', 'claimed', ['email' => 'me@example.com']);
+     */
+    public static function log(string $name, string $event, array $properties = [], ?string $ip = null): self
+    {
+        return static::create([
+            'name' => $name,
+            'event' => $event,
+            'properties' => $properties,
+            'ip_hash' => $ip ? hash('sha256', $ip) : null,
+            'created_at' => now(),
+        ]);
+    }
+}