feat(hermes): add chromium for local browser tool

- Create custom Dockerfile extending nousresearch/hermes-agent with chromium installed
- Update compose.yml to build from local Dockerfile instead of pulling image
- Enables browser tool to work without Browserbase cloud service

ai/hermes/Dockerfile

@@ -0,0 +1,10 @@
+FROM nousresearch/hermes-agent:latest
+
+# Install Chromium for browser tool
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    chromium \
+    && rm -rf /var/lib/apt/lists/* \
+    && apt-get clean
+
+# Set environment variable for Chromium path
+ENV CHROME_EXECUTABLE=/usr/bin/chromium