Move sticker creator API to chat service

ts/util/signalRoutes.ts

@@ -439,38 +439,6 @@ export const artAddStickersRoute = _route('artAddStickers', {
   },
 });
 
-/**
- * Art Service Authentication
- * @example
- * ```ts
- * artAuthRoute.toAppUrl({
- *   token: "123",
- *   pubKey: "abc",
- * })
- * // URL { "sgnl://art-auth?token=123&pub_key=abc" }
- */
-export const artAuthRoute = _route('artAuth', {
-  patterns: [_pattern('sgnl:', 'art-auth', '{/}?', { search: ':params' })],
-  schema: z.object({
-    token: paramSchema, // opaque
-    pubKey: paramSchema, // base64url
-  }),
-  parse(result) {
-    const params = new URLSearchParams(result.search.groups.params);
-    return {
-      token: params.get('token'),
-      pubKey: params.get('pub_key'),
-    };
-  },
-  toAppUrl(args) {
-    const params = new URLSearchParams({
-      token: args.token,
-      pub_key: args.pubKey,
-    });
-    return new URL(`sgnl://art-auth?${params.toString()}`);
-  },
-});
-
 /**
  * Show a conversation
  * @example
@@ -594,7 +562,6 @@ const _allSignalRoutes = [
   captchaRoute,
   linkCallRoute,
   artAddStickersRoute,
-  artAuthRoute,
   showConversationRoute,
   startCallLobbyRoute,
   showWindowRoute,