feat: add insight timer

database/migrations/2026_06_02_100000_create_bell_sounds_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
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // Bell sounds used for start / end / interval bells (زنگ شروع/پایان/بین‌راهی).
+        Schema::create('bell_sounds', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('sound_path')->nullable();
+            $table->string('image_path')->nullable();
+            $table->integer('order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('bell_sounds');
+    }
+};

database/migrations/2026_06_02_100100_create_background_sounds_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
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // Ambient background sounds (صدای پس‌زمینه).
+        Schema::create('background_sounds', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('sound_path')->nullable();
+            $table->string('image_path')->nullable();
+            $table->integer('order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('background_sounds');
+    }
+};

database/migrations/2026_06_02_100200_create_background_images_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
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // Background images (تصویر پس‌زمینه).
+        Schema::create('background_images', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('image_path')->nullable();
+            $table->integer('order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('background_images');
+    }
+};

database/migrations/2026_06_02_100300_create_timer_presets_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
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        // A saved meditation timer (ذخیره‌شده‌های من) configured by a user.
+        Schema::create('timer_presets', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('user_id')->constrained('users')->cascadeOnDelete();
+            $table->string('name');
+            $table->unsignedInteger('duration_seconds')->default(0); // مدت زمان
+
+            // Bells
+            $table->foreignId('start_bell_id')->nullable()->constrained('bell_sounds')->nullOnDelete();
+            $table->foreignId('end_bell_id')->nullable()->constrained('bell_sounds')->nullOnDelete();
+            $table->foreignId('interval_bell_id')->nullable()->constrained('bell_sounds')->nullOnDelete();
+            $table->unsignedInteger('interval_seconds')->nullable();  // هر چند ثانیه یک‌بار
+            $table->unsignedInteger('interval_repeat')->nullable();   // تکرار چند بار
+
+            // Ambience
+            $table->foreignId('background_sound_id')->nullable()->constrained('background_sounds')->nullOnDelete();
+            $table->foreignId('background_image_id')->nullable()->constrained('background_images')->nullOnDelete();
+
+            $table->unsignedInteger('volume')->default(100); // صدای دستگاه (0-100)
+            $table->timestamps();
+
+            $table->index('user_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('timer_presets');
+    }
+};

database/migrations/2026_06_03_100000_use_images_for_timer_background_image.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
+{
+    /**
+     * Repoint timer background image to the shared `images` table and drop the
+     * dedicated background_images catalog.
+     */
+    public function up(): void
+    {
+        Schema::table('timer_presets', function (Blueprint $table) {
+            $table->dropForeign(['background_image_id']);
+        });
+
+        Schema::dropIfExists('background_images');
+
+        Schema::table('timer_presets', function (Blueprint $table) {
+            $table->foreign('background_image_id')->references('id')->on('images')->nullOnDelete();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('timer_presets', function (Blueprint $table) {
+            $table->dropForeign(['background_image_id']);
+        });
+
+        Schema::create('background_images', function (Blueprint $table) {
+            $table->id();
+            $table->string('name');
+            $table->string('image_path')->nullable();
+            $table->integer('order')->default(0);
+            $table->boolean('is_active')->default(true);
+            $table->timestamps();
+        });
+
+        Schema::table('timer_presets', function (Blueprint $table) {
+            $table->foreign('background_image_id')->references('id')->on('background_images')->nullOnDelete();
+        });
+    }
+};