v0.12.0

• Separate CLI help scope from help format: --recursive controls one-level vs recursive expansion, --output controls plain/json/yaml/markdown rendering, and the two are independent (so --help --recursive --output markdown is a recursive Markdown export)
• Make plain --help one-level by default for human readers, with 'sub --help' scoping to that subcommand; agents and doc generation opt into the full surface with --help --recursive
• Add a pre-clap help handler that scans argv before parsing so --help combined with --recursive/--output is honored instead of being short-circuited by clap's built-in help, while a bare --recursive without --help falls through to the application's own parser
• Add structured JSON and YAML help output as command-tree schemas, alongside plain and markdown, with markdown kept help-only and not a general business output format
• Replace the dedicated --help-markdown flag with --help --recursive --output markdown; keep cli_render_help and cli_render_help_markdown as recursive wrappers
• Implement the orthogonal scope/format help model consistently across Rust, Go, Python, and TypeScript with matching examples, tests, READMEs, skill, and spec