feat: implement proposal management system including database schema, Filament resources, and client-facing preview views

database/migrations/2026_05_25_000000_create_proposals_table.php

@@ -0,0 +1,44 @@
+<?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
+    {
+        Schema::create('proposals', function (Blueprint $table) {
+            $table->id();
+            $table->uuid('uuid')->unique();
+            $table->string('slug')->unique();
+            $table->string('title');
+            $table->string('client_name');
+            $table->string('client_email')->nullable();
+            $table->longText('content');
+            $table->decimal('total_price', 15, 2)->nullable();
+            $table->string('currency', 10)->default('TRY');
+            $table->string('status', 30)->default('draft'); // draft, sent, accepted, rejected, revised
+            $table->date('valid_until')->nullable();
+            $table->text('client_feedback')->nullable();
+            $table->string('accepted_name')->nullable();
+            $table->timestamp('accepted_at')->nullable();
+            $table->integer('views_count')->default(0);
+            $table->json('meta')->nullable(); // For accent color, logos, etc.
+            $table->foreignId('created_by')->nullable()->constrained('users')->nullOnDelete();
+            $table->timestamps();
+            $table->softDeletes();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('proposals');
+    }
+};