feat: extend analysis route to support multiple source types including TikTok, Instagram, SoundCloud, and Twitter

app/routes/analyze.py

@@ -161,7 +161,7 @@ async def analyze(
     logger.info(f"[{request_id}] Analysis: sourceType={sourceType}")
 
     try:
-        if sourceType == "youtube":
+        if sourceType in ("youtube", "tiktok", "instagram", "soundcloud", "twitter"):
             if not url:
                 return AnalyzeResponse(errors=["missing_url"])
             return await _analyze_youtube(request_id, url, start_time)