Create model and migration for prelim definitions

app/Models/prelim_definition.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class prelim_definition extends Model
+{
+    protected $fillable = [
+        'audition_id',
+        'room_id',
+        'order_in_room',
+        'scoring_guide_id',
+        'passing_score',
+    ];
+
+    public function audition(): BelongsTo
+    {
+        return $this->belongsTo(Audition::class);
+    }
+
+    public function room(): BelongsTo
+    {
+        return $this->belongsTo(Room::class);
+    }
+
+    public function scoringGuide(): BelongsTo
+    {
+        return $this->belongsTo(ScoringGuide::class);
+    }
+}

database/migrations/2025_09_11_141701_create_prelim_definitions_table.php

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+<?php
+
+use App\Models\Audition;
+use App\Models\Room;
+use App\Models\ScoringGuide;
+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('prelim_definitions', function (Blueprint $table) {
+            $table->id();
+            $table->foreignIdFor(Audition::class)->constrained()->cascadeOnDelete()->cascadeOnUpdate();
+            $table->foreignIdFor(Room::class)->nullable()->constrained()->nullOnDelete()->cascadeOnUpdate();
+            $table->integer('order_in_room')->nullable();
+            $table->foreignIdFor(ScoringGuide::class)->nullable()->constrained()->nullOnDelete()->cascadeOnUpdate();
+            $table->float('passing_score');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('prelim_definitions');
+    }
+};