fix: integrate logging hardening with rebased main (F3 + tauri plugins)

Rebasing onto post-F3 main surfaced two spots the auto-merge left inconsistent:
- profile_handler UpdateIdentityKey path: thread ctx into the writeServiceError
  call (the signature gained a context param in the server logging change)
- identity-pin store lookup: drop a needless borrow flagged by clippy

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Server/api/profile_handler.go

@@ -178,7 +178,7 @@ func handleUpdateProfile(svc *service.Services, broadcaster ProfileBroadcaster)
 		if req.IdentityPublicKey != nil {
 			updated, err = svc.Users.UpdateIdentityKey(r.Context(), user.ID, *req.IdentityPublicKey)
 			if err != nil {
-				writeServiceError(w, err)
+				writeServiceError(r.Context(), w, err)
 				return
 			}
 		}