feat: extend gateway session patch

docs/refactor/tui.md

@@ -0,0 +1,26 @@
+---
+summary: "Refactor plan: Gateway TUI parity with pi-mono interactive UI"
+read_when:
+  - Building or refactoring the Gateway TUI
+  - Syncing TUI slash commands with Clawdis behavior
+---
+# Gateway TUI refactor plan
+
+Updated: 2026-01-03
+
+## Goals
+- Match pi-mono interactive TUI feel (editor, streaming, tool cards, selectors).
+- Keep Clawdis semantics: Gateway WS only, session store owns state, no branching/export.
+- Work locally or remotely via Gateway URL/token.
+
+## Non-goals
+- Branching, export, OAuth flows, or hook UIs.
+- File-system operations on the Gateway host from the TUI.
+
+## Checklist
+- [x] Protocol + server: sessions.patch supports model overrides; agent events include tool results (text-only payloads).
+- [ ] Gateway TUI client: add session/model helpers + stricter typing.
+- [ ] TUI UI kit: theme + components (editor, message feed, tool cards, selectors).
+- [ ] TUI controller: keybindings + Clawdis slash commands + history/stream wiring.
+- [ ] Docs + changelog updated for the new TUI behavior.
+- [ ] Gate: lint, build, tests, docs list.