feat: 공정관리 API 구현 (L-1)

- processes, process_classification_rules 테이블 마이그레이션
- Process, ProcessClassificationRule 모델 (BelongsToTenant, SoftDeletes)
- ProcessService: CRUD + 통계/옵션/상태토글
- ProcessController + FormRequest 검증
- API 라우트 등록 (/v1/processes)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/Models/ProcessClassificationRule.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class ProcessClassificationRule extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'process_id',
+        'registration_type',
+        'rule_type',
+        'matching_type',
+        'condition_value',
+        'priority',
+        'description',
+        'is_active',
+    ];
+
+    protected $casts = [
+        'is_active' => 'boolean',
+        'priority' => 'integer',
+    ];
+
+    /**
+     * 공정
+     */
+    public function process(): BelongsTo
+    {
+        return $this->belongsTo(Process::class);
+    }
+}