README is missing several documented CLI options (--head/--tail, --emoji, --rst, --inspect, --max-width, --panel-style, --title/--caption, --export-svg, --version)

[philipgadsden3]

Running rich --help shows a number of options that aren't documented anywhere in the README:

• -h/--head and -t/--tail — display first/last N lines (requires --syntax or --csv)
• -j/--emoji — enable emoji codes
• --rst — render reStructuredText
• --syntax — explicit syntax-highlighting flag
• --inspect — inspect a Python object
• -W/--max-width
• -S/--panel-style (requires --panel)
• --title / --caption
• --export-svg
• -v/--version

The README documents most other flags (--style, --panel, --rule, etc.) with a short description and example, but these are missing entirely. Would be happy to submit a PR adding a short section for these if that's welcome.

Repro: pip install rich-cli && rich --help (v1.8.1)