feat: TUI slash commands, incognito toggle, model switching
Slash commands:
- /incognito — toggles incognito mode (wired to security.Firewall),
shows 🔒 indicator in status bar
- /model <name> — switch model mid-session
- /provider — show current provider
- /clear — clear chat and reset scroll
- /help — list all commands
CLI flags:
- --permission <mode> (default, accept_edits, bypass, deny, plan, auto)
- --incognito (start in incognito mode)
TUI Config struct passes Firewall + Engine for feature access.