fix: address PR review feedback for MCP tools support

- Avoid logging sensitive cfg.Args in ConnectServer; log args_count instead
- Sanitize server/tool name components in MCPTool.Name() to ensure valid
  identifiers for downstream providers (lowercase, [a-z0-9_-] only)
- Add slack as 5th MCP server example in config.example.json
- Move Dockerfile.full and docker-compose.full.yml into docker/ directory
  for consistency with existing docker/Dockerfile and docker/docker-compose.yml
- Fix all Makefile docker-* targets to reference correct compose file paths
- Fix docker/docker-compose.full.yml build context (.. ) and volume paths
- Fix scripts/test-docker-mcp.sh compose file path and replace cowsay test
  with actual @modelcontextprotocol/server-filesystem MCP server test

docker/Dockerfile.full

@@ -0,0 +1,44 @@
+# ============================================================
+# Stage 1: Build the picoclaw binary
+# ============================================================
+FROM golang:1.26.0-alpine AS builder
+
+RUN apk add --no-cache git make
+
+WORKDIR /src
+
+# Cache dependencies
+COPY go.mod go.sum ./
+RUN go mod download
+
+# Copy source and build
+COPY . .
+RUN make build
+
+# ============================================================
+# Stage 2: Node.js-based runtime with full MCP support
+# ============================================================
+FROM node:24-alpine3.23
+
+# Install runtime dependencies
+RUN apk add --no-cache \
+  ca-certificates \
+  curl \
+  git \
+  python3 \
+  py3-pip
+
+# Install uv and symlink to system path
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh && \
+  ln -s /root/.local/bin/uv /usr/local/bin/uv && \
+  ln -s /root/.local/bin/uvx /usr/local/bin/uvx && \
+  uv --version
+
+# Copy binary
+COPY --from=builder /src/build/picoclaw /usr/local/bin/picoclaw
+
+# Create picoclaw home directory
+RUN /usr/local/bin/picoclaw onboard
+
+ENTRYPOINT ["picoclaw"]
+CMD ["gateway"]

docker/docker-compose.full.yml

@@ -0,0 +1,44 @@
+services:
+  # ─────────────────────────────────────────────
+  # PicoClaw Agent (one-shot query) - Full MCP Support
+  #   docker compose -f docker/docker-compose.full.yml run --rm picoclaw-agent -m "Hello"
+  # ─────────────────────────────────────────────
+  picoclaw-agent:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile.full
+    container_name: picoclaw-agent-full
+    profiles:
+      - agent
+    volumes:
+      - ../config/config.json:/root/.picoclaw/config.json:ro
+      - picoclaw-workspace:/root/.picoclaw/workspace
+      - picoclaw-npm-cache:/root/.npm # npm cache for faster MCP server installs
+    entrypoint: ["picoclaw", "agent"]
+    stdin_open: true
+    tty: true
+
+  # ─────────────────────────────────────────────
+  # PicoClaw Gateway (Long-running Bot) - Full MCP Support
+  #   docker compose -f docker/docker-compose.full.yml --profile gateway up
+  # ─────────────────────────────────────────────
+  picoclaw-gateway:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile.full
+    container_name: picoclaw-gateway-full
+    restart: unless-stopped
+    profiles:
+      - gateway
+    volumes:
+      # Configuration file
+      - ../config/config.json:/root/.picoclaw/config.json:ro
+      # Persistent workspace (sessions, memory, logs)
+      - picoclaw-workspace:/root/.picoclaw/workspace
+      # NPM cache for faster MCP server installs
+      - picoclaw-npm-cache:/root/.npm
+    command: ["gateway"]
+
+volumes:
+  picoclaw-workspace:
+  picoclaw-npm-cache: # Cache npm packages to speed up MCP server installations