Fix TypeScript compilation errors in postThread implementations

Co-authored-by: nzakas <38546+nzakas@users.noreply.github.com>

Author: Copilot

src/strategies/bluesky.js

@@ -58,6 +58,13 @@ import { validatePostOptions } from "../util/options.js";
  * @property {Object} [record.embed] The embedded content in the post.
  * @property {string} record.embed.$type The type of embedded content.
  * @property {Array<Object>} [record.embed.images] The images to embed.
+ * @property {Object} [record.reply] Reply information for threading.
+ * @property {Object} record.reply.root The root post of the thread.
+ * @property {string} record.reply.root.uri The URI of the root post.
+ * @property {string} record.reply.root.cid The CID of the root post.
+ * @property {Object} record.reply.parent The parent post in the thread.
+ * @property {string} record.reply.parent.uri The URI of the parent post.
+ * @property {string} record.reply.parent.cid The CID of the parent post.
  *
  */
 

src/strategies/twitter.js

@@ -246,6 +246,7 @@ export class TwitterStrategy {
 			}
 
 			// Build tweet options
+			/** @type {Object<string, any>} */
 			const tweetOptions = {};
 			if (previousTweetId) {
 				tweetOptions.reply = {