오늘 이슈(TodayIssue) 기능 구현

- TodayIssue 모델 및 마이그레이션 추가
- TodayIssueController, TodayIssueService 구현
- TodayIssueObserverService 및 Observer 패턴 적용
- DailyReportService 연동
- Swagger API 문서 업데이트
- 라우트 추가

database/migrations/2026_01_21_161328_create_today_issues_table.php

@@ -0,0 +1,55 @@
+<?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('today_issues', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('tenant_id')->constrained()->cascadeOnDelete();
+
+            // 소스 정보
+            $table->string('source_type', 50)->comment('order, bad_debt, stock, expense, tax, approval, client');
+            $table->unsignedBigInteger('source_id')->nullable()->comment('원본 레코드 ID (tax는 null)');
+
+            // 표시 정보
+            $table->string('badge', 50)->comment('수주 성공, 주식 이슈, 직정 제고, 지출예상내역서, 세금 신고, 결재 요청, 기타');
+            $table->string('content', 500)->comment('표시 내용');
+            $table->string('path', 255)->nullable()->comment('이동 경로');
+            $table->boolean('needs_approval')->default(false)->comment('승인 필요 여부');
+
+            // 읽음 상태
+            $table->boolean('is_read')->default(false)->comment('확인 여부');
+            $table->foreignId('read_by')->nullable()->constrained('users')->nullOnDelete();
+            $table->timestamp('read_at')->nullable();
+
+            // 만료 시간 (오늘의 이슈이므로 당일 자정에 만료)
+            $table->timestamp('expires_at')->nullable()->comment('만료 시간');
+
+            $table->timestamps();
+
+            // 인덱스
+            $table->index(['tenant_id', 'is_read', 'created_at']);
+            $table->index(['tenant_id', 'badge']);
+            $table->index(['expires_at']);
+
+            // 중복 방지 (같은 소스에서 같은 이슈 중복 생성 방지)
+            $table->unique(['tenant_id', 'source_type', 'source_id'], 'today_issues_unique_source');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('today_issues');
+    }
+};

database/migrations/2026_01_21_201937_add_notification_type_to_today_issues_table.php

@@ -0,0 +1,30 @@
+<?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::table('today_issues', function (Blueprint $table) {
+            $table->string('notification_type', 50)->nullable()->after('badge')->comment('알림 유형 (sales_order, new_vendor, approval_request, bad_debt, safety_stock, expected_expense, vat_report)');
+            $table->index('notification_type');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('today_issues', function (Blueprint $table) {
+            $table->dropIndex(['notification_type']);
+            $table->dropColumn('notification_type');
+        });
+    }
+};