Add runtime state validation before ForgeAgent HTTP call

- Check process_running and ready state before making inference request
- Emit descriptive error messages for each failure scenario
- Handle local vs remote connection modes appropriately
- Validation score: 100 (was 0)

Result: {"status":"keep","validation_score":100,"response_time_ms":500}

.planning/phases/06-chat-ui-redesign/06-04-SUMMARY.md

@@ -0,0 +1,49 @@
+---
+phase: 06-chat-ui-redesign
+plan: 04
+status: complete
+completed_at: "2026-04-02T12:20:00Z"
+---
+
+# Plan 06-04 Summary: Agentic Manus Conversation Blocks
+
+## Completed
+
+- Added chat-native agentic UI blocks:
+  - `AgentThinkingCard`
+  - `AgentStepList`
+  - `AgentSystemMessage`
+  - `AgentFinalResponse`
+- Refactored `ForgeAgentBubble` to compose the new Manus-style sections instead of the older heavy card layout.
+- Added `display_mode` support to chat messages so final agentic answers can render without the classic assistant bubble chrome.
+- Added a frontend ForgeAgent session hook and reducer for Tauri event-driven progress updates.
+- Added a Rust Tauri command `start_forgeagent_session_command` that emits step progress, artifact-ready, and plan-completed events.
+- Integrated `AgenticToggle` and live ForgeAgent transcript rendering into `ChatView`.
+
+## Verification
+
+### Frontend tests
+```bash
+pnpm exec vitest run src/lib/chat.test.ts src/lib/chatDebug.test.ts src/components/ChatView.debug.test.tsx src/lib/forgeagent-state.test.ts src/components/forgeagent/ForgeAgentBubble.test.tsx src/components/MessageBubble.test.tsx
+```
+
+Result: **6 files / 9 tests passed**
+
+### Rust tests
+```bash
+cd tauri-app/src-tauri && cargo test --quiet
+```
+
+Result: **42 tests passed**
+
+### Frontend build
+```bash
+cd tauri-app && pnpm build
+```
+
+Result: **TypeScript + Vite build passed**
+
+## Notes
+
+- The new Tauri ForgeAgent flow is an event-driven scaffold that enables the Manus-like transcript experience in the current chat UI.
+- Normal chat mode remains intact; agentic rendering is gated by the agentic toggle or auto-detection.