Claude Code: Remove A2A gateway and frontend for minimal Gradio mode

- Remove A2A gateway installation (RUN block)
- Remove frontend COPY step (missing directory)
- Disable token-redirect.cjs preload (depends on A2A)
- Goal: Get Cain running in minimal mode (Gradio only)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile

@@ -88,15 +88,8 @@ ENV HOME=/home/node
 WORKDIR /app
 
 # ── A2A Gateway Extension ───────────────────────────────────────────────────
-# Install extension as non-root user
-RUN echo "[build] Installing A2A gateway..." && START=$(date +%s) \
-  && (git clone --depth 1 https://github.com/win4r/openclaw-a2a-gateway.git \
-      /app/openclaw/extensions/a2a-gateway || \
-    (sleep 5 && git clone --depth 1 https://github.com/win4r/openclaw-a2a-gateway.git \
-      /app/openclaw/extensions/a2a-gateway)) \
-  && cd /app/openclaw/extensions/a2a-gateway \
-  && npm install --production --no-cache-dir \
-  && echo "[build] A2A gateway: $(($(date +%s) - START))s"
+# REMOVED: A2A gateway installation (minimal mode - Gradio only)
+# To enable A2A, uncomment the gateway installation block
 
 # ── Coding Agent Extension (local — no git clone needed) ─────────────────────
 COPY --chown=node:node extensions/coding-agent /app/openclaw/extensions/coding-agent
@@ -119,15 +112,9 @@ COPY --chown=node:node openclaw.json /home/node/scripts/openclaw.json.default
 COPY --chown=node:node gradio_dashboard.py /home/node/gradio_dashboard.py
 COPY --chown=node:node app.py /home/node/app.py
 
-# Copy frontend last (most frequently changed)
-COPY --chown=node:node frontend /home/node/frontend
-
-# ── Frontend index.html with timestamp cache busting ─────────────────────────
-RUN VERSION_TS=$(date +%s) \
-  && sed "s/{{VERSION_TIMESTAMP}}/${VERSION_TS}/g" \
-    /home/node/frontend/electron-standalone.html \
-    > /home/node/frontend/index.html \
-  && echo "[build] Frontend index.html generated (timestamp=${VERSION_TS})"
+# ── Frontend ───────────────────────────────────────────────────────────────────
+# REMOVED: frontend COPY (minimal mode - Gradio only, no Electron UI)
+# To enable full UI, restore the frontend COPY and index.html generation steps
 
 # ── Environment variables for production ─────────────────────────────────────
 # Default values for HuggingFace Spaces compatibility

scripts/entrypoint.sh

@@ -28,7 +28,8 @@ export NODE_OPTIONS="${NODE_OPTIONS:+$NODE_OPTIONS }--require /home/node/scripts
 export NODE_OPTIONS="${NODE_OPTIONS:+$NODE_OPTIONS }--require /home/node/scripts/telegram-proxy.cjs"
 
 # Enable token redirect + A2A routing + state/agents endpoints (all in one preload)
-export NODE_OPTIONS="${NODE_OPTIONS:+$NODE_OPTIONS }--require /home/node/scripts/token-redirect.cjs"
+# REMOVED: A2A gateway not installed (minimal mode - Gradio only)
+# export NODE_OPTIONS="${NODE_OPTIONS:+$NODE_OPTIONS }--require /home/node/scripts/token-redirect.cjs"
 
 # ── Extensions symlink ──────────────────────────────────────────────────────
 SYMLINK_START=$(date +%s)