refactor: improve router type safety and usage

- Add explicit Router type imports across views
- Replace $router type casting with proper typing
- Use $router.back() instead of $router.go(-1) for consistency
- Add proper route and router typings to components
- Clean up router navigation methods
- Fix router push/back method calls

This commit improves type safety and consistency in router usage across
the application's view components.

src/views/ContactImportView.vue

@@ -150,6 +150,8 @@ import { decodeEndorserJwt } from "../libs/crypto/vc";
 })
 export default class ContactImportView extends Vue {
   $notify!: (notification: NotificationIface, timeout?: number) => void;
+  $route!: RouteLocationNormalizedLoaded;
+  $router!: Router;
 
   AppString = AppString;
   capitalizeAndInsertSpacesBeforeCaps = capitalizeAndInsertSpacesBeforeCaps;
@@ -182,8 +184,7 @@ export default class ContactImportView extends Vue {
     this.apiServer = settings.apiServer || "";
 
     // look for any imported contact array from the query parameter
-    const importedContacts = (this.$route as RouteLocationNormalizedLoaded)
-      .query["contacts"] as string;
+    const importedContacts = this.$route.query["contacts"] as string;
     if (importedContacts) {
       await this.setContactsSelected(JSON.parse(importedContacts));
     }
@@ -204,7 +205,7 @@ export default class ContactImportView extends Vue {
         (Array.isArray(parsedJwt.payload) ? parsedJwt.payload : undefined);
       if (!contacts && parsedJwt.payload.own) {
         // handle this single-contact JWT in the contacts page, better suited to single additions
-        (this.$router as Router).push({
+        this.$router.push({
           name: "contacts",
           query: { contactJwt: jwt },
         });
@@ -386,7 +387,7 @@ export default class ContactImportView extends Vue {
       },
       3000,
     );
-    (this.$router as Router).push({ name: "contacts" });
+    this.$router.push({ name: "contacts" });
   }
 }
 </script>