新增每日签到与补签卡功能

app/Models/User.php

@@ -252,6 +252,49 @@ class User extends Authenticatable
         return $this->hasMany(VipPaymentOrder::class, 'user_id')->latest('id');
     }
 
+    /**
+     * 关联：用户每日签到记录。
+     */
+    public function dailySignIns(): HasMany
+    {
+        return $this->hasMany(DailySignIn::class, 'user_id')->latest('sign_in_date');
+    }
+
+    /**
+     * 关联：用户全部身份徽章。
+     */
+    public function identityBadges(): HasMany
+    {
+        return $this->hasMany(UserIdentityBadge::class, 'user_id')->latest('acquired_at');
+    }
+
+    /**
+     * 关联：用户当前启用的签到身份徽章。
+     */
+    public function currentSignInIdentityBadge(): HasOne
+    {
+        return $this->hasOne(UserIdentityBadge::class, 'user_id')
+            ->where('source', UserIdentityBadge::SOURCE_SIGN_IN)
+            ->where('is_active', true)
+            ->where(function ($query) {
+                $query->whereNull('expires_at')
+                    ->orWhere('expires_at', '>', now());
+            })
+            ->latestOfMany('acquired_at');
+    }
+
+    /**
+     * 获取当前签到身份徽章辅助方法。
+     */
+    public function currentSignInIdentity(): ?UserIdentityBadge
+    {
+        if ($this->relationLoaded('currentSignInIdentityBadge')) {
+            return $this->getRelation('currentSignInIdentityBadge');
+        }
+
+        return $this->currentSignInIdentityBadge()->first();
+    }
+
     // ── 职务相关关联 ──────────────────────────────────────────────────────
 
     /**