Fix migration dates, add multi-platform testing infrastructure, and organize docs

Migration Date Corrections:
- Update all migration TODO comments to use correct date: 2025-07-06
- Add proper TypeScript type declarations for $route and $router in DeepLinkErrorView
- Fix template property references to use $route instead of route

Multi-Platform Testing Infrastructure:
- Add comprehensive multi-platform testing requirements for migrations
- Update component migration template with platform testing requirements
- Establish sign-off requirements for web, desktop, and mobile platforms
- Document expected outcomes and validation procedures

Migration Testing Organization:
- Create docs/migration-testing/ folder for testing documentation
- Move TESTING_CONTACTIMPORT.md from project root to migration-testing/
- Relocate all migration-checklist-*.md files to migration-testing/
- Add comprehensive README.md with organization guidelines
- Update file references in components and TODOs
- Establish naming conventions and quality standards

Files added:
- docs/migration-testing/README.md
- docs/migration-testing/TESTING_CONTACTIMPORT.md
- docs/migration-testing/migration-checklist-ContactImportView.md
- docs/migration-testing/migration-checklist-MembersList.md

Files modified:
- src/views/ContactImportView.vue (date correction)
- src/components/MembersList.vue (date correction, reference path update)
- src/views/DeepLinkErrorView.vue (date correction, Vue router types)
- docs/migration-templates/component-migration.md (multi-platform requirements)

Files moved:
- TESTING_CONTACTIMPORT.md → docs/migration-testing/
- docs/migration-checklist-*.md → docs/migration-testing/

This establishes comprehensive testing infrastructure for all future migrations
with proper organization and multi-platform validation requirements.

src/views/DeepLinkErrorView.vue

@@ -15,9 +15,9 @@
         <code>timesafari://{{ formattedPath }}</code>
         <div class="debug-info">
           <h4>Parameters:</h4>
-          <pre>{{ JSON.stringify(route.params, null, 2) }}</pre>
+          <pre>{{ JSON.stringify($route.params, null, 2) }}</pre>
           <h4>Query:</h4>
-          <pre>{{ JSON.stringify(route.query, null, 2) }}</pre>
+          <pre>{{ JSON.stringify($route.query, null, 2) }}</pre>
         </div>
       </div>
     </div>
@@ -40,7 +40,7 @@
 
 <script lang="ts">
 // TODO: Testing Required - Vue 3 to Options API + PlatformServiceMixin Migration
-// Priority: Medium | Migrated: 2025-01-06 | Author: Matthew Raymer
+// Priority: Medium | Migrated: 2025-07-06 | Author: Matthew Raymer
 //
 // MIGRATION DETAILS: Converted from Vue 3 Composition API to Options API for PlatformServiceMixin
 // - Replaced logConsoleAndDb() with this.$logAndConsole()
@@ -56,6 +56,7 @@
 // Test URL: timesafari://invalid/path?param=test
 
 import { Component, Vue } from "vue-facing-decorator";
+import { RouteLocationNormalizedLoaded, Router } from "vue-router";
 import { VALID_DEEP_LINK_ROUTES } from "../interfaces/deepLinks";
 import { logger } from "../utils/logger";
 import { PlatformServiceMixin } from "@/utils/PlatformServiceMixin";
@@ -64,6 +65,11 @@ import { PlatformServiceMixin } from "@/utils/PlatformServiceMixin";
   mixins: [PlatformServiceMixin],
 })
 export default class DeepLinkErrorView extends Vue {
+  /** Current route instance */
+  $route!: RouteLocationNormalizedLoaded;
+  /** Router instance for navigation */
+  $router!: Router;
+
   validRoutes = VALID_DEEP_LINK_ROUTES;
 
   // Extract error information from query params