Replace the iframe-based Control UI embed with a native React
implementation that communicates directly with the Gateway via
gateway:rpc IPC calls and chat event streaming.
New components:
- ChatToolbar: session selector dropdown, refresh button, thinking toggle
- ChatMessage: message bubbles with markdown (react-markdown + GFM),
collapsible thinking blocks, tool use cards, image attachments
- ChatInput: textarea with Enter to send, Shift+Enter for new line
- message-utils: extractText/extractThinking/extractImages/extractToolUse
ported from OpenClaw's message-extract.ts
Rewritten chat store with:
- Session management (sessions.list, switchSession)
- Proper chat.history loading with raw message preservation
- chat.send with idempotencyKey and run tracking
- Streaming via handleChatEvent (delta/final/error/aborted)
- Thinking toggle (show/hide reasoning blocks)
