Restore 4 files to commit 48e2e2a

fix: swap xemtivitop primary, remove Dantri/SKDS shorts from yt_scraper.py

Restore yt_scraper.py from commit 1098f70 (yt-dlp based, working)

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Fix: Optimize shorts scraper - 35s timeout, 30min cache, fallback to prevent homepage blocking

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