feat(baoyu-danger-x-to-markdown): add referenced tweet rendering, media reuse, and hi-res downloads

- Render embedded tweets in articles as blockquotes with author info and text summary
- Reuse existing markdown when --download-media targets already-converted URLs
- Upgrade Twitter image downloads to 4096x4096 resolution
- Improve entity resolution with logical key lookup
- Support trailing media for all block types (headings, lists, blockquotes)
- Change output path to {username}/{tweet-id}/{content-slug}.md for stable paths

skills/baoyu-danger-x-to-markdown/scripts/referenced-tweets.ts

@@ -0,0 +1,81 @@
+import { fetchXTweet } from "./graphql.js";
+import {
+  extractReferencedTweetIds,
+  type ReferencedTweetInfo,
+} from "./markdown.js";
+
+type ResolveReferencedTweetsOptions = {
+  log?: (message: string) => void;
+};
+
+function extractReferencedTweetInfo(tweet: any, fallbackTweetId: string): ReferencedTweetInfo {
+  const userCore = tweet?.core?.user_results?.result?.core;
+  const userLegacy = tweet?.core?.user_results?.result?.legacy;
+
+  const authorName =
+    typeof userCore?.name === "string"
+      ? userCore.name
+      : typeof userLegacy?.name === "string"
+        ? userLegacy.name
+        : undefined;
+
+  const authorUsername =
+    typeof userCore?.screen_name === "string"
+      ? userCore.screen_name
+      : typeof userLegacy?.screen_name === "string"
+        ? userLegacy.screen_name
+        : undefined;
+
+  const text =
+    tweet?.note_tweet?.note_tweet_results?.result?.text ??
+    tweet?.legacy?.full_text ??
+    tweet?.legacy?.text ??
+    undefined;
+
+  const tweetId =
+    typeof tweet?.rest_id === "string" && tweet.rest_id.length > 0
+      ? tweet.rest_id
+      : fallbackTweetId;
+
+  const url = authorUsername
+    ? `https://x.com/${authorUsername}/status/${tweetId}`
+    : `https://x.com/i/web/status/${tweetId}`;
+
+  return {
+    id: tweetId,
+    url,
+    authorName,
+    authorUsername,
+    text: typeof text === "string" ? text : undefined,
+  };
+}
+
+export async function resolveReferencedTweetsFromArticle(
+  article: unknown,
+  cookieMap: Record<string, string>,
+  options: ResolveReferencedTweetsOptions = {}
+): Promise<Map<string, ReferencedTweetInfo>> {
+  const log = options.log ?? (() => {});
+  const ids = extractReferencedTweetIds(article);
+  const referencedTweets = new Map<string, ReferencedTweetInfo>();
+
+  for (const id of ids) {
+    try {
+      const tweet = await fetchXTweet(id, cookieMap, false);
+      const info = extractReferencedTweetInfo(tweet, id);
+      referencedTweets.set(id, info);
+    } catch (error) {
+      log(
+        `[x-to-markdown] Failed to fetch referenced tweet ${id}: ${
+          error instanceof Error ? error.message : String(error)
+        }`
+      );
+      referencedTweets.set(id, {
+        id,
+        url: `https://x.com/i/web/status/${id}`,
+      });
+    }
+  }
+
+  return referencedTweets;
+}