* feat(cli): two-stage /model autocomplete with ghost text suggestions
- SlashCommandCompleter: Tab-complete providers first (anthropic:, openrouter:, etc.)
then models within the selected provider
- SlashCommandAutoSuggest: inline ghost text for slash commands, subcommands,
and /model provider:model two-stage suggestions
- Custom Tab key binding: accepts provider completion and immediately
re-triggers completions to show that provider's models
- COMMANDS_BY_CATEGORY: structured format with explicit subcommands for
tab completion and ghost text (prompt, reasoning, voice, skills, cron, browser)
- SUBCOMMANDS dict auto-extracted from command definitions
- Model/provider info cached 60s for responsive completions
* fix: repair test regression and restore gold color from PR #1622
- Fix test_unknown_command_still_shows_error: patch _cprint instead of
console.print to match the _cprint switch in process_command()
- Restore gold color on 'Type /help' hint using _DIM + _GOLD constants
instead of bare \033[2m (was losing the #B8860B gold)
- Use _GOLD constant for ambiguous command message for consistency
- Add clarifying comment on SUBCOMMANDS regex fallback
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Co-authored-by: Lars van der Zande <lmvanderzande@gmail.com>
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