sandbox connected and streaming

gateway/Dockerfile

@@ -18,6 +18,9 @@ COPY src ./src
 # Build (includes protobuf generation)
 RUN npm run build
 
+# Note: Python API files for research subagent are copied by bin/build script
+# to src/harness/subagents/research/api-source/ before docker build
+
 # Production image
 FROM node:22-slim
 
@@ -62,6 +65,17 @@ COPY protobuf ./protobuf
 # Copy k8s templates (not included in TypeScript build)
 COPY src/k8s/templates ./dist/k8s/templates
 
+# Copy harness prompts (not included in TypeScript build)
+COPY src/harness/prompts ./dist/harness/prompts
+
+# Copy all subagent directories (config.yaml, system-prompt.md, memory/, etc.)
+# TypeScript build already compiled .ts files to .js in dist, so we copy the entire
+# source directory to get all non-TypeScript assets, then remove .ts duplicates
+COPY src/harness/subagents ./dist/harness/subagents
+# Remove source .ts files (we only need the compiled .js from builder stage)
+# Keep .yaml, .md files and memory/ directories
+RUN find ./dist/harness/subagents -name "*.ts" -type f -delete
+
 # Copy entrypoint script
 COPY entrypoint.sh ./
 RUN chmod +x entrypoint.sh