feat(v2.1.0): terminal refactor — architecture cleanup, p0 observability merge, docs overhaul

BREAKING: Removed Dockerfile, docker/, render.yaml (backend deployment)
BREAKING: Removed docs/portal.html (React LandingPage replaces it)

Architecture:
- Cherry-picked p0-foundation-observability core services (9 files)
- turnId-based dialogue orchestrator ownership isolation
- Chat session local persistence with message limits
- System store connection diagnostics
- Fixed Zustand 5 / TW4 type compatibility

Cleanup:
- Removed 3 worktrees + 4 stale branches (only master remains)
- Deleted 20+ dead files (.omc/, Docker, Render, lighthouse, superpowers)
- Rewrote .gitignore with clean structure

Documentation:
- Deep-rewrote AGENTS.md, CLAUDE.md, copilot-instructions.md
- Fixed README badges (main→master), version numbers, path aliases
- Removed Render deployment sections
- Updated OpenSpec config.yaml tech stack

CI:
- Release job uses generate_release_notes instead of hardcoded body
- build-pages.sh simplified (no portal.html overlay)

Tests: 12 files, 165 tests pass (was 39/521 including worktree copies)
TypeCheck: clean | Lint: clean | Build: clean | Pages: clean

Author: shijiashuai

.claude/plans/kind-frolicking-locket-agent-afb91ee13d02ca828.md

@@ -0,0 +1,30 @@
+# Copilot Instructions — MetaHuman Engine
+
+基于 React 19 + Three.js + TypeScript 的 3D 数字人交互引擎。
+完整规范参见项目根目录 `AGENTS.md`。
+
+## 核心规则
+
+1. 使用 `@/*` 路径别名（`@/components/...`, `@/store/...`）
+2. 服务层通过 `useXStore.getState()` 读写状态（非 props）
+3. 所有外部调用必须有降级方案
+4. `core/` 目录禁止引入 React 依赖
+
+## 常用命令
+
+```bash
+npm run dev          # 开发服务器
+npm run typecheck    # 类型检查
+npm run lint         # ESLint
+npm run test:run     # 测试
+```
+
+## 关键文件
+
+| 文件 | 职责 |
+|------|------|
+| `src/core/avatar/DigitalHumanEngine.ts` | 数字人控制门面 |
+| `src/core/dialogue/dialogueService.ts` | 对话服务（重试/降级） |
+| `src/core/dialogue/dialogueOrchestrator.ts` | 对话轮次编排 |
+| `src/store/digitalHumanStore.ts` | 数字人状态 |
+| `src/components/DigitalHumanViewer.tsx` | 3D 视口组件 |

.claude/skills/frontend-design/skill.md

@@ -103,17 +103,6 @@ jobs:
       - uses: softprops/action-gh-release@v2
         with:
           name: MetaHuman Engine ${{ github.ref_name }}
-          body: |
-            ## MetaHuman Engine ${{ github.ref_name }}
-
-            ### 🚀 Features
-            - 🎭 3D Avatar Engine with emotion-driven expressions
-            - 🗣️ Voice Interaction (TTS/ASR)
-            - 👁️ Visual Perception (MediaPipe)
-            - 🧠 Streaming Dialogue
-
-            ### 🔗 Links
-            - 🌐 Demo: https://lessup.github.io/meta-human/
-            - 📖 Docs: https://github.com/LessUp/meta-human/tree/main/docs
+          generate_release_notes: true
           draft: false
           prerelease: false