Add Claude Code skills for CLI commands and improve webdav get

[clavery]

Summary

• Add Claude Code skills plugin with documentation for CLI command topics
• Refactor webdav get command to support stdout output via -o - flag

New Skills

Added skills to teach Claude about CLI commands in plugins/b2c-cli/skills/:

• b2c-job - Job execution and site archive import/export (IMPEX)
• b2c-code - Code version deployment and management
• b2c-mrt - Managed Runtime bundle push and environment management
• b2c-sites - Storefront sites listing
• b2c-slas - SLAS client management
• b2c-webdav - WebDAV file operations with log reading examples

WebDAV Get Improvements

Breaking change: Replaced local positional argument with -o/--output flag.

# Default: saves to current directory with remote filename
b2c webdav get customerror.log --root=logs

# Output to specific file
b2c webdav get customerror.log --root=logs -o ./downloads/error.log

# Output to stdout (Unix convention)
b2c webdav get customerror.log --root=logs -o -
b2c webdav get customerror.log --root=logs -o - | grep "ERROR"

Documentation

Updated AGENTS.md with guidance on maintaining skills when CLI commands change.

Test plan

• Verify b2c webdav get <file> downloads to current directory
• Verify b2c webdav get <file> -o <path> downloads to specified path
• Verify b2c webdav get <file> -o - outputs to stdout
• Verify piping works: b2c webdav get <file> -o - | grep <pattern>

🤖 Generated with Claude Code