🎉 Initial commit: PiAgentUI — AI Agent Desktop & Web UI

A professional workspace for AI coding agents with:
- Real-time streaming chat with SSE
- Session management (fork, clone, tree navigation)
- MCP tools browser & metadata panel
- Skills browser (global, project, package sources)
- Voice input & STT provider configuration
- Integrated terminal & file explorer
- Model selector with capability metadata
- Keyboard-first UI with command palette
- 8 languages (en, pt-BR, es, ja, zh-CN, ar, bn, hi)
- Tauri 2 desktop app
- React 19 + TypeScript + Vite 8 + Tailwind CSS 4
- Pi Agent extension runtime

Originally forked from OpenCodeUI, now an independent project.
License: GPL-3.0-only

docker/Dockerfile.frontend

@@ -0,0 +1,48 @@
+# ============================================
+# OpenCode WebUI - Frontend
+# ============================================
+# 纯前端静态文件 + Caddy 反向代理 API
+
+# ---- Stage 1: 构建前端 ----
+# 前端产物是静态文件，和目标 CPU 架构无关。
+# 多架构镜像构建时让 Node builder 始终跑在构建机原生平台，避免 arm64 通过 QEMU 重跑 npm/vite 构建。
+FROM --platform=$BUILDPLATFORM node:22-alpine AS builder
+
+ARG NPM_REGISTRY=https://registry.npmjs.org/
+ARG NPM_REGISTRY_FALLBACK=https://registry.npmmirror.com/
+
+WORKDIR /app
+COPY package.json package-lock.json ./
+RUN set -eux; \
+    npm config set registry "${NPM_REGISTRY}"; \
+    npm config set fetch-retries 5; \
+    npm config set fetch-retry-factor 2; \
+    npm config set fetch-retry-mintimeout 10000; \
+    npm config set fetch-retry-maxtimeout 120000; \
+    npm config set audit false; \
+    npm config set fund false; \
+    if npm ci --ignore-scripts; then \
+      exit 0; \
+    fi; \
+    echo "npm ci failed on ${NPM_REGISTRY}, retrying with ${NPM_REGISTRY_FALLBACK}"; \
+    npm cache clean --force; \
+    npm config set registry "${NPM_REGISTRY_FALLBACK}"; \
+    npm ci --ignore-scripts
+COPY . .
+RUN node scripts/copy-material-icons.mjs
+ENV VITE_API_BASE_URL=/api
+RUN npm run build
+
+# ---- Stage 2: Caddy 运行时 ----
+FROM caddy:2-alpine
+
+# 前端静态文件
+COPY --from=builder /app/dist /srv
+
+# Caddy 配置（默认 + standalone）
+COPY docker/Caddyfile /etc/caddy/Caddyfile
+COPY docker/Caddyfile.standalone /etc/caddy/Caddyfile.standalone
+
+EXPOSE 3000
+
+CMD ["caddy", "run", "--config", "/etc/caddy/Caddyfile"]