feat(typescript): resolve Priority 2 type safety issues across components

- Eliminate all remaining any types in Priority 2 components (activity, gifts, usage limits, QR scanning, discovery, meetings)
- Implement proper TypeScript types using existing interfaces (GiveActionClaim, EndorserRateLimits, ImageRateLimits)
- Replace any types with unknown + proper type guards for error handling
- Fix type assertions for external library integrations (QR scanning, mapping)
- Maintain backward compatibility while improving type safety

Resolves 7 Priority 2 type safety warnings, achieving 100% type safety for critical user-facing functionality.

src/views/OnboardMeetingSetupView.vue

@@ -345,7 +345,9 @@ export default class OnboardMeetingView extends Vue {
   }
 
   async created() {
-    this.notify = createNotifyHelpers(this.$notify as any);
+    this.notify = createNotifyHelpers(
+      this.$notify as Parameters<typeof createNotifyHelpers>[0],
+    );
     const settings = await this.$accountSettings();
     this.activeDid = settings?.activeDid || "";
     this.apiServer = settings?.apiServer || "";
@@ -419,7 +421,7 @@ export default class OnboardMeetingView extends Vue {
       } else {
         this.newOrUpdatedMeetingInputs = this.blankMeeting();
       }
-    } catch (error: any) {
+    } catch (error: unknown) {
       this.newOrUpdatedMeetingInputs = this.blankMeeting();
     }
   }