chore(docker): add Playwright Chromium deps

- Add missing system libraries required by Playwright/Chromium in server and dev images\n- Document optional Playwright browser cache volume in docker-compose.override.yml.example

Dockerfile.dev

@@ -8,9 +8,17 @@
 FROM node:22-slim
 
 # Install build dependencies for native modules (node-pty) and runtime tools
+# Also install Playwright/Chromium system dependencies (aligns with playwright install-deps on Debian/Ubuntu)
 RUN apt-get update && apt-get install -y --no-install-recommends \
     python3 make g++ \
     git curl bash gosu ca-certificates openssh-client \
+    # Playwright/Chromium dependencies
+    libglib2.0-0 libnss3 libnspr4 libdbus-1-3 libatk1.0-0 libatk-bridge2.0-0 \
+    libcups2 libdrm2 libxkbcommon0 libatspi2.0-0 libxcomposite1 libxdamage1 \
+    libxfixes3 libxrandr2 libgbm1 libasound2 libpango-1.0-0 libcairo2 \
+    libx11-6 libx11-xcb1 libxcb1 libxext6 libxrender1 libxss1 libxtst6 \
+    libxshmfence1 libgtk-3-0 libexpat1 libfontconfig1 fonts-liberation \
+    xdg-utils libpangocairo-1.0-0 libpangoft2-1.0-0 libu2f-udev libvulkan1 \
     && GH_VERSION="2.63.2" \
     && ARCH=$(uname -m) \
     && case "$ARCH" in \