fix(docker): add missing README.md to COPY and fix install paths

Both Dockerfiles failed because pyproject.toml references readme = 'README.md'
but the file wasn't copied into the build context.

Changes:
- agent-mesh/Dockerfile: add COPY README.md, remove -e editable install
- Dockerfile.sidecar: fix COPY paths for repo-root context, add README.md

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: imran-siddique

packages/agent-mesh/docker/Dockerfile

@@ -32,6 +32,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 # Copy package source from repo root context
 COPY packages/agent-mesh/pyproject.toml ./
+COPY packages/agent-mesh/README.md ./
 COPY packages/agent-mesh/src/ ./src/
 
 # Install the package with server extras (fastapi + uvicorn)

packages/agent-os/Dockerfile.sidecar

@@ -15,6 +15,7 @@ WORKDIR /app
 
 # Copy agent-os package source (context is repo root)
 COPY packages/agent-os/pyproject.toml ./
+COPY packages/agent-os/README.md ./
 COPY packages/agent-os/src/ ./src/
 COPY packages/agent-os/modules/ ./modules/