docs: add ClaudeCN sponsor entry to README (en/zh/ja)

Insert sponsor row in all three README locales linking to claudecn.top.
EN/JA copy adapted from the Chinese original. Banner normalized to the
project standard sponsor image spec (1920x798 RGB on white background)
and recompressed; alt text unified to "ClaudeCN" across all three files.
This commit is contained in:
Jason
2026-05-10 21:49:08 +08:00
parent b016a17783
commit a7dd7117e7
4 changed files with 15 additions and 0 deletions
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