feat(docker): add hermes agent Dockerfile with curl, poppler-utils, imagemagick

Add docker/hermes/ directory with:
- Dockerfile: Multi-stage build for Hermes Agent
- entrypoint.sh: Runtime initialization script

Base packages added:
- curl: HTTP client for API calls
- poppler-utils: PDF manipulation tools (pdftotext, pdfinfo)
- imagemagick: Image processing and conversion

This is PR 1 of 5 for Docker package additions.

docker/hermes/Dockerfile

@@ -15,9 +15,7 @@ ENV PLAYWRIGHT_BROWSERS_PATH=/opt/hermes/.playwright
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         build-essential nodejs npm python3 ripgrep ffmpeg gcc python3-dev libffi-dev procps git openssh-client docker-cli tini \
-        curl poppler-utils imagemagick \
-        chromium xvfb fonts-noto-color-emoji fonts-unifont fonts-liberation fonts-ipafont-gothic fonts-wqy-zenhei fonts-tlwg-loma-otf fonts-freefont-ttf \
-        libasound2t64 libatk-bridge2.0-0t64 libatk1.0-0t64 libatspi2.0-0t64 libcairo2 libcups2t64 libdbus-1-3 libdrm2 libgbm1 libglib2.0-0t64 libnspr4 libnss3 libpango-1.0-0 libx11-6 libxcb1 libxcomposite1 libxdamage1 libxext6 libxfixes3 libxkbcommon0 libxrandr2 && \
+        curl poppler-utils imagemagick && \
     rm -rf /var/lib/apt/lists/*
 
 # Non-root user for runtime; UID can be overridden via HERMES_UID at runtime