[devohmycode]

Summary

skills-atlas completion <shell> prints scripts for bash, zsh, fish and PowerShell. Only the __complete logic behind them was unit-tested: the scripts themselves never ran in zsh, fish or PowerShell.

• scripts/check-completion.sh generates each script, checks its syntax (bash -n, zsh -n, fish -n, the PowerShell parser), then completes skills-atlas ins in that shell and expects install:
  • bash: COMP_LINE/COMP_POINT, then the completion function;
  • zsh: the function with stand-ins for compdef and compadd (the completion system cannot run without a terminal);
  • fish: complete -C;
  • PowerShell: TabExpansion2.
• A completion workflow runs it on Ubuntu, installing zsh and fish (bash and pwsh come with the image). It prints the shell versions and runs on pull requests and pushes that touch the completion code, the CLI or the check itself.

Validation

• bash, locally: syntax and completion pass.
• zsh, fish and PowerShell: see this PR's completion check.