fix: bluesky threading, prep for linkedin

We are stuck waiting for scopes approval at the moment.

server/src/modules/announceOnBluesky.ts

@@ -11,6 +11,7 @@ import { AtpAgent } from "@atproto/api";
  * @param content - The main body of the announcement.
  * @returns A message indicating the success or failure of the operation.
  */
+// eslint-disable-next-line max-lines-per-function, max-statements -- This is a big function.
 export const announceOnBluesky = async(
   content: Array<string>,
 ): Promise<string> => {
@@ -39,19 +40,35 @@ export const announceOnBluesky = async(
   if (typeof blueskyRequest === "string") {
     return `Failed to send initial post to Bluesky. ${blueskyRequest}`;
   }
-  let { uri } = blueskyRequest;
+  const rootUri = blueskyRequest.uri;
+  const rootCid = blueskyRequest.cid;
+  let parentUri = rootUri;
+  let parentCid = rootCid;
   for (const post of restOfPosts) {
     // eslint-disable-next-line no-await-in-loop -- We need to do this sequentially.
     const blueskyResponse = await agent.post({
-      replyTo: uri,
-      text:    post,
+      reply: {
+        parent: {
+          cid: parentCid,
+          uri: parentUri,
+        },
+        root: {
+          cid: rootCid,
+          uri: rootUri,
+        },
+      },
+      text: post,
+    }).catch((error: unknown) => {
+      return error instanceof Error
+        ? error.message
+        : String(error);
     });
-    if (typeof blueskyResponse !== "string") {
-      const { uri: replyUri } = blueskyResponse;
-      uri = replyUri;
+    if (typeof blueskyResponse === "string") {
+      failedReplies.push(post);
       continue;
     }
-    failedReplies.push(post);
+    parentUri = blueskyResponse.uri;
+    parentCid = blueskyResponse.cid;
   }
   return `Successfully sent initial post to Bluesky. ${failedReplies.length > 0
     ? `Failed to send ${failedReplies.length.toString()} replies: ${failedReplies.join(", ")}`