Refactor: simplify GiftedDialog with explicit entity type props

Replace complex updateEntityTypes() method with explicit giverEntityType and
recipientEntityType props. This makes the component more declarative and
maintainable by removing hidden logic and making entity type relationships
clear at the call site.

- Remove updateEntityTypes() method and related watchers
- Add explicit giverEntityType and recipientEntityType props with defaults
- Update all views to use inline logic for entity type determination
- Fix entity type preservation in navigation flows
- Enhance query parameter passing for better context preservation
- Fix recipient reset issue in ContactGiftingView
- Resolve entity type mismatch in HomeView project button flow

Files changed:
- GiftedDialog.vue: Remove complex logic, add explicit props
- EntitySelectionStep.vue: Enhanced query parameter handling
- ContactGiftingView.vue: Improved context preservation
- HomeView.vue, ProjectViewView.vue, ClaimView.vue, ContactsView.vue:
  Updated to use explicit entity type props
- Add refactoring documentation

src/views/ContactGiftingView.vue

@@ -67,9 +67,10 @@
 
     <GiftedDialog
       ref="giftedDialog"
+      :giver-entity-type="giverEntityType"
+      :recipient-entity-type="recipientEntityType"
       :from-project-id="fromProjectId"
       :to-project-id="toProjectId"
-      :show-projects="showProjects"
       :is-from-project-view="isFromProjectView"
     />
   </section>
@@ -213,7 +214,7 @@ export default class ContactGiftingView extends Vue {
         // Preserve the existing giver from the context
         if (this.giverEntityType === "project") {
           giver = {
-            // no did, because it's a project
+            did: this.giverProjectHandleId,
             name: this.giverProjectName,
             image: this.giverProjectImage,
             handleId: this.giverProjectHandleId,
@@ -253,7 +254,7 @@ export default class ContactGiftingView extends Vue {
         // We're selecting a giver, so the contact becomes the giver
         giver = contact as GiverReceiverInputInfo; // Safe because we know contact is not "Unnamed" or undefined
 
-        // Recipient is either a project or the current user
+        // Preserve the existing recipient from the context
         if (this.recipientEntityType === "project") {
           recipient = {
             did: this.recipientProjectHandleId,
@@ -262,7 +263,20 @@ export default class ContactGiftingView extends Vue {
             handleId: this.recipientProjectHandleId,
           };
         } else {
-          recipient = { did: this.activeDid, name: "You" };
+          // Check if the preserved recipient was "Unnamed" (empty DID) or a regular contact
+          if (this.recipientDid === "") {
+            // Recipient was "Unnamed"
+            recipient = { did: "", name: "Unnamed" };
+          } else if (this.recipientDid) {
+            // Recipient was a regular contact
+            recipient = {
+              did: this.recipientDid,
+              name: this.recipientProjectName || "Someone",
+            };
+          } else {
+            // Fallback to current user
+            recipient = { did: this.activeDid, name: "You" };
+          }
         }
       } else {
         // We're selecting a recipient, so the contact becomes the recipient
@@ -276,13 +290,21 @@ export default class ContactGiftingView extends Vue {
             image: this.giverProjectImage,
             handleId: this.giverProjectHandleId,
           };
-        } else if (this.giverDid) {
-          giver = {
-            did: this.giverDid,
-            name: this.giverProjectName || "Someone",
-          };
         } else {
-          giver = { did: this.activeDid, name: "You" };
+          // Check if the preserved giver was "Unnamed" (empty DID) or a regular contact
+          if (this.giverDid === "") {
+            // Giver was "Unnamed"
+            giver = { did: "", name: "Unnamed" };
+          } else if (this.giverDid) {
+            // Giver was a regular contact
+            giver = {
+              did: this.giverDid,
+              name: this.giverProjectName || "Someone",
+            };
+          } else {
+            // Fallback to current user
+            giver = { did: this.activeDid, name: "You" };
+          }
         }
       }