fix(homeview): consolidate duplicate registration check logging

Remove duplicate API calls and consolidate error logging for registration
status checks to eliminate redundant 400 error messages in development.

- Remove duplicate checkRegistrationStatus() call from mounted() sequence
- Modify initializeIdentity() to only log unexpected errors (not 400s)
- Eliminate duplicate fetchEndorserRateLimits() API calls
- Preserve all other error logging and functionality

This reduces console noise for expected 400 responses while maintaining
proper error handling for actual registration failures.

src/views/HomeView.vue

@@ -473,7 +473,7 @@ export default class HomeView extends Vue {
       await this.initializeIdentity();
       await this.loadSettings();
       await this.loadContacts();
-      await this.checkRegistrationStatus();
+      // Registration check already handled in initializeIdentity()
       await this.loadFeedData();
       await this.loadNewOffers();
       await this.checkOnboarding();
@@ -602,10 +602,14 @@ export default class HomeView extends Vue {
             this.isRegistered = true;
           }
         } catch (error) {
-          this.$logAndConsole(
-            `[HomeView] Registration check failed: ${error}`,
-            true,
-          );
+          // Consolidate logging: Only log unexpected errors, not expected 400s
+          const axiosError = error as any;
+          if (axiosError?.response?.status !== 400) {
+            this.$logAndConsole(
+              `[HomeView] Registration check failed: ${error}`,
+              true,
+            );
+          }
           // Continue as unregistered - this is expected for new users
         }
       }