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/NewActivityView.vue

@@ -59,7 +59,10 @@
             :to="{ path: '/claim/' + encodeURIComponent(offer.jwtId) }"
             class="text-blue-500"
           >
-            <font-awesome icon="file-lines" class="pl-2 text-blue-500 cursor-pointer" />
+            <font-awesome
+              icon="file-lines"
+              class="pl-2 text-blue-500 cursor-pointer"
+            />
           </router-link>
           <!-- New line that appears on hover or when the offer is clicked -->
           <div
@@ -125,7 +128,10 @@
             :to="{ path: '/claim/' + encodeURIComponent(offer.jwtId) }"
             class="text-blue-500"
           >
-            <font-awesome icon="file-lines" class="pl-2 text-blue-500 cursor-pointer" />
+            <font-awesome
+              icon="file-lines"
+              class="pl-2 text-blue-500 cursor-pointer"
+            />
           </router-link>
           <!-- New line that appears on hover -->
           <div
@@ -154,13 +160,13 @@ import {
   updateAccountSettings,
 } from "../db/index";
 import { Contact } from "../db/tables/contacts";
+import { Router } from "vue-router";
+import { OfferSummaryRecord, OfferToPlanSummaryRecord } from "../interfaces";
 import {
   didInfo,
   displayAmount,
   getNewOffersToUser,
   getNewOffersToUserProjects,
-  OfferSummaryRecord,
-  OfferToPlanSummaryRecord,
 } from "../libs/endorserServer";
 import { retrieveAccountDids } from "../libs/util";
 
@@ -169,7 +175,7 @@ import { retrieveAccountDids } from "../libs/util";
 })
 export default class NewActivityView extends Vue {
   $notify!: (notification: NotificationIface, timeout?: number) => void;
-
+  $router!: Router;
   activeDid = "";
   allContacts: Array<Contact> = [];
   allMyDids: string[] = [];