JP IPTV Clean 2.2.3

Playlist: https://jp-iptv-clean-v223.pages.dev/JP.m3u
Status:   https://jp-iptv-clean-v223.pages.dev/status.json
Refresh:  https://jp-iptv-clean-v223.pages.dev/refresh

V2.2.3:
- broader Japan + Japanese-language discovery
- Free-TV Japan parser
- strict duplicate suppression
- multi-candidate fallback per channel
- core 6 priority checks
- rotating health checks within Cloudflare Free limits
- up to 100 active channels in the output
- larger discovery pool (up to 220 candidates)
- deep HLS segment verification on scanned channels
- fixed persistent rotating cursor across refresh cycles
- healthy channels are carried forward between rounds
- a channel is dropped only after 3 consecutive failed checks
- known Rakuten/Free-TV mojibake names are repaired
- subscription-channel names are retained; no login/DRM/token bypass