feat: add breath colors

database/migrations/2026_06_15_130000_add_colors_to_breathing_templates_table.php

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+<?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::table('breathing_templates', function (Blueprint $table) {
+            // One or more hex colors: a single solid color or a gradient.
+            $table->json('colors')->nullable()->after('image_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('breathing_templates', function (Blueprint $table) {
+            $table->dropColumn('colors');
+        });
+    }
+};

database/migrations/2026_06_15_140000_create_breathing_colors_table.php

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+<?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('breathing_colors', function (Blueprint $table) {
+            $table->id();
+            $table->string('name')->nullable();
+            $table->json('colors');          // one hex (solid) or several (gradient)
+            $table->integer('order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('breathing_colors');
+    }
+};

database/migrations/2026_06_15_150000_use_breathing_color_id_on_templates.php

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+<?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::table('breathing_templates', function (Blueprint $table) {
+            if (Schema::hasColumn('breathing_templates', 'colors')) {
+                $table->dropColumn('colors');
+            }
+            $table->foreignId('breathing_color_id')->nullable()->after('image_id')
+                ->constrained('breathing_colors')->nullOnDelete();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('breathing_templates', function (Blueprint $table) {
+            $table->dropForeign(['breathing_color_id']);
+            $table->dropColumn('breathing_color_id');
+            $table->json('colors')->nullable();
+        });
+    }
+};

database/seeders/BreathingColorSeeder.php

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+<?php
+
+namespace Database\Seeders;
+
+use App\Models\BreathingColor;
+use Illuminate\Database\Seeder;
+
+class BreathingColorSeeder extends Seeder
+{
+    public function run(): void
+    {
+        $colors = [
+            ['name' => 'آبی',    'order' => 1, 'colors' => ['#3ABDEB', '#553AEB']],
+            ['name' => 'صورتی',  'order' => 2, 'colors' => ['#CE4299', '#8628FF']],
+            ['name' => 'سبز',    'order' => 3, 'colors' => ['#5CC65C', '#00A489']],
+            ['name' => 'نارنجی', 'order' => 4, 'colors' => ['#E2990A', '#CC4B1C']],
+            ['name' => 'بنفش',   'order' => 5, 'colors' => ['#6829DD', '#1A50CC']],
+            ['name' => 'تک‌رنگ', 'order' => 6, 'colors' => ['#5360FC']],
+        ];
+
+        foreach ($colors as $c) {
+            BreathingColor::firstOrCreate(['name' => $c['name']], $c);
+        }
+    }
+}