fix: resolve all ESLint errors

- droidRelayService: add missing keyId variable declaration
- quotaCardService: use object destructuring for actualDeducted
- apiKeyService: remove unused variables and duplicate requires
- redis: remove shadowed logger/config requires
- unifiedGeminiScheduler: rename isActive param to avoid shadow
- commonHelper: add comments to empty catch blocks
- testPayloadHelper: prefix unused model param with underscore

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/services/droidRelayService.js

@@ -405,6 +405,7 @@ class DroidRelayService {
   ) {
     return new Promise((resolve, reject) => {
       const url = new URL(apiUrl)
+      const keyId = apiKeyData?.id
       const bodyString = JSON.stringify(processedBody)
       const contentLength = Buffer.byteLength(bodyString)
       const requestHeaders = {
@@ -1198,6 +1199,7 @@ class DroidRelayService {
     skipUsageRecord = false
   ) {
     const { data } = response
+    const keyId = apiKeyData?.id
 
     // 从响应中提取 usage 数据
     const usage = data.usage || {}