Merge PR #48: feat: add Xiaohongshu source + Reddit public fallback

- Xiaohongshu search via local MCP service (opt-in, zero impact if service not running)
- Reddit public JSON fallback (works with zero API keys)
- Reddit priority: ScrapeCreators -> OpenAI -> public fallback
- Updated env.py: Reddit always available via public fallback

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vendor/package/dist/lib/cli-args.js

@@ -0,0 +1,25 @@
+const TWEET_URL_REGEX = /^(?:https?:\/\/)?(?:www\.)?(?:twitter\.com|x\.com)\/[^/]+\/status\/\d+/i;
+const TWEET_ID_REGEX = /^\d{8,}$/;
+export function looksLikeTweetInput(value) {
+    const trimmed = value.trim();
+    if (!trimmed) {
+        return false;
+    }
+    return TWEET_URL_REGEX.test(trimmed) || TWEET_ID_REGEX.test(trimmed);
+}
+export function resolveCliInvocation(rawArgs, knownCommands) {
+    if (rawArgs.length === 0) {
+        return { argv: null, showHelp: true };
+    }
+    const hasKnownCommand = rawArgs.some((arg) => knownCommands.has(arg));
+    if (!hasKnownCommand) {
+        const tweetArgIndex = rawArgs.findIndex(looksLikeTweetInput);
+        if (tweetArgIndex >= 0) {
+            const rewrittenArgs = [...rawArgs];
+            rewrittenArgs.splice(tweetArgIndex, 0, 'read');
+            return { argv: ['node', 'bird', ...rewrittenArgs], showHelp: false };
+        }
+    }
+    return { argv: null, showHelp: false };
+}
+//# sourceMappingURL=cli-args.js.map