Add change summary and bundle opencode

Dockerfile

@@ -89,8 +89,9 @@ RUN ARCH="${TARGETARCH:-}" && \
     "https://github.com/tsl0922/ttyd/releases/download/${TTYD_VERSION}/ttyd.${TTYD_ARCH}" \
     && chmod +x /usr/local/bin/ttyd
 
-# Install SST OpenCode (non-interactive install, with npm fallback)
-RUN curl -fsSL https://opencode.ai/install | bash -s -- -y \
+# Install OpenCode from bundled anomalyco/opencode source
+COPY opencode /opt/opencode-src
+RUN bash /opt/opencode-src/install --no-modify-path \
     && ln -sf /root/.opencode/bin/opencode /usr/local/bin/opencode
 
 # Removed Gemini CLI - not needed for Shopify AI App Builder