prelim score sheet model and migration

app/Models/PrelimScoreSheet.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+class PrelimScoreSheet extends Model
+{
+    public function user(): HasOne
+    {
+        return $this->hasOne(User::class);
+    }
+
+    public function entry(): HasOne
+    {
+        return $this->hasOne(Entry::class);
+    }
+}

database/migrations/2025_09_23_020626_create_prelim_score_sheets_table.php

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+<?php
+
+use App\Models\Entry;
+use App\Models\User;
+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('prelim_score_sheets', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor(User::class)->constrained()->cascadeOnDelete()->cascadeOnUpdate();
+            $table->foreignIdFor(Entry::class)->constrained()->cascadeOnDelete()->cascadeOnUpdate();
+            $table->json('subscores');
+            $table->decimal('total', 9, 6);
+            $table->timestamps();
+            $table->unique(['user_id', 'entry_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('prelim_score_sheets');
+    }
+};