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Fix: Short AI slide timing + genk_ai endpoint in patch layer + more VTV fallback shorts

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Delete static/app_v3.js, static/app_v4.js, static/app_v5.js, static/core_1781056782.js, static/rewrite_fix.js, static/tv_player.js, static/yt_live_v2.js, static/index_v3.html, static/index_v4.html, ai_runtime_patch_fast.py, main_patch.py, vtv_scraper.py, match_detail.py

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Delete ai_fix2.py, ai_patch.py, ai_runtime.py, ai_runtime_final.py, ai_runtime_final2.py, ai_runtime_final3.py, ai_runtime_final4.py, ai_runtime_final5.py, ai_runtime_final6.py, ai_runtime_patch_fast.py, app_clean.py, app_entry.py, app_final.py, app_main.py, app_patch_unified.py, app_run.py, main_patch.py, patch_extra.py, patch_runtime.py, restore_runner.py, rewrite_slide.py, vtv_scraper.py, TRIGGER_REBUILD_V6.md, _static_build_trigger.txt, app/

Fix: topic rewrite no-URL error, remove duplicate AI short slide, full interaction buttons"

Fix: hide old source/short-AI renderers, show comment count, force VNEWS link buttons"

Fix: Short AI same layout as YouTube shorts, source links with image + VNEWS button, storage guide"

Fix: single rewrite button, guaranteed rewrite success, short button after rewrite"

Fix: scrape URLs on rewrite, in-app links, natural AI, persistent check"

Fix: persistent data via HF Dataset, single ask box, working rewrite"

Fix: add /api/topic/rewrite handler and natural AI ask prompt

Fix: topic rewrite uses post text if no URL, AI ask answers naturally based on content"

Fix: single rewrite btn, 24h TTL for wall/shorts, AI ask uses article content"

Add persistent source_details render, topic rewrite, and short comments"

Restore ai_runtime_patch_fast.py to exact c1e2703 version

Fix: strip prompt from topic text, persist source_details on reload, AI ask from content, dedupe rewrite btn

Background prefetch on startup + instant cache response for homepage speed"

Topic posts: filter irrelevant content + source links open in-app via readArticle"

Patch: fast home, source thumbnails, rewrite button in articles and topics