Fix TypeScript compilation errors

- Fix conflicting Request interface declarations (auth.ts vs authorization.ts)
- Fix email field type issue in auth.ts (handle undefined)
- Fix req.params type issues (string | string[] to string) in auth.ts, roles.ts, users.ts
- Fix apiKey undefined issue in claude.ts (use tavilyApiKey)
- Fix duplicate isConfigured identifier in emailService.ts (rename to _isConfigured)
- Fix confluencePage property type issue in jiraAssetsClient.ts (add type assertion)

backend/src/services/jiraAssetsClient.ts

@@ -453,14 +453,19 @@ class JiraAssetsClient {
 
     // Generic Confluence field detection: check if any value has a confluencePage
     // This works for all Confluence fields regardless of their declared type (float, text, etc.)
-    const hasConfluencePage = values.some(v => v.confluencePage);
+    // Type assertion needed because confluencePage is not in the type definition but exists at runtime
+    type AttributeValueWithConfluence = typeof values[0] & {
+      confluencePage?: { url?: string };
+    };
+    const valuesWithConfluence = values as AttributeValueWithConfluence[];
+    const hasConfluencePage = valuesWithConfluence.some(v => v.confluencePage);
     if (hasConfluencePage) {
-      const confluencePage = values[0]?.confluencePage;
+      const confluencePage = valuesWithConfluence[0]?.confluencePage;
       if (confluencePage?.url) {
         logger.info(`[Confluence Field Parse] Found Confluence URL for field "${attrDef.fieldName || 'unknown'}": ${confluencePage.url}`);
         // For multiple values, return array of URLs; for single, return the URL string
         if (attrDef.isMultiple) {
-          return values
+          return valuesWithConfluence
             .filter(v => v.confluencePage?.url)
             .map(v => v.confluencePage!.url);
         }