Escape backticks across en/ja/uk/vi/zh slash-commands and skills modules so the literal `!`command`` syntax renders correctly instead of breaking the inline-code span.
Remove the specific 21,800+ stars and 2,585+ forks numbers across en/zh/ja
READMEs. They go stale within a day of every commit. The Star History chart
already conveys current scale, and the trust bullets read fine without exact
counts.