feat: DB 연결 오버라이딩 및 대시보드 통계 위젯 추가

- DB 연결: 로컬/Docker 환경 오버라이딩 설정 (.env)
- 테넌트 위젯: redirect 버그 수정 (TenantSelectorWidget)
- 통계 위젯: 사용자/제품/자재/주문 카드 추가 (StatsOverviewWidget)
- 리소스 한국어화: Product, Material 모델 레이블 추가
- 대시보드: 위젯 등록 및 캐시 최적화

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

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

app/Http/Requests/Api/V1/ModelParameter/CreateModelParameterRequest.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace App\Http\Requests\Api\V1\ModelParameter;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CreateModelParameterRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'name' => ['required', 'string', 'max:50', 'regex:/^[a-zA-Z][a-zA-Z0-9_]*$/'],
+            'label' => ['required', 'string', 'max:100'],
+            'type' => ['required', 'string', 'in:INPUT,OUTPUT'],
+            'data_type' => ['required', 'string', 'in:INTEGER,DECIMAL,STRING,BOOLEAN'],
+            'unit' => ['nullable', 'string', 'max:20'],
+            'default_value' => ['nullable', 'string', 'max:255'],
+            'min_value' => ['nullable', 'numeric'],
+            'max_value' => ['nullable', 'numeric', 'gte:min_value'],
+            'enum_values' => ['nullable', 'array'],
+            'enum_values.*' => ['string', 'max:100'],
+            'validation_rules' => ['nullable', 'string', 'max:500'],
+            'description' => ['nullable', 'string', 'max:500'],
+            'is_required' => ['boolean'],
+            'display_order' => ['integer', 'min:0'],
+        ];
+    }
+
+    /**
+     * Get custom messages for validator errors.
+     */
+    public function messages(): array
+    {
+        return [
+            'name.regex' => __('validation.model_parameter.name_format'),
+            'max_value.gte' => __('validation.model_parameter.max_value_gte_min'),
+        ];
+    }
+
+    /**
+     * Get custom attribute names for validator errors.
+     */
+    public function attributes(): array
+    {
+        return [
+            'name' => __('validation.attributes.parameter_name'),
+            'label' => __('validation.attributes.parameter_label'),
+            'type' => __('validation.attributes.parameter_type'),
+            'data_type' => __('validation.attributes.data_type'),
+            'unit' => __('validation.attributes.unit'),
+            'default_value' => __('validation.attributes.default_value'),
+            'min_value' => __('validation.attributes.min_value'),
+            'max_value' => __('validation.attributes.max_value'),
+            'enum_values' => __('validation.attributes.enum_values'),
+            'validation_rules' => __('validation.attributes.validation_rules'),
+            'description' => __('validation.attributes.description'),
+            'is_required' => __('validation.attributes.is_required'),
+            'display_order' => __('validation.attributes.display_order'),
+        ];
+    }
+
+    /**
+     * Prepare the data for validation.
+     */
+    protected function prepareForValidation(): void
+    {
+        $this->merge([
+            'is_required' => $this->boolean('is_required'),
+            'display_order' => $this->integer('display_order', 0),
+        ]);
+    }
+}