feat: introduce MCP server, cross-platform runtime, and Showcase UI reorganization

- Showcase UI Reorganization:
  * Move web UI dashboard from root directory into apps/showcase_ui/ for cleaner project structure
  * Add 'artemis ui' CLI command (artemis/interfaces/cli/commands/ui.py) and launcher scripts for the interactive showcase console
- Standalone MCP Server & Notifiers (mcp_server/):
  * Implement dedicated MCP server package with mobile automation tools (device_state, inspect_trace, task_manager, task_runner)
  * Add multi-channel notifiers (AgentAPI, Desktop notifications, Webhooks, File output, and Composite routing)
  * Introduce background task runner and trace store for autonomous mobile execution monitoring
- Cross-Platform Runtime & Toolchain Support:
  * Add artemis/platform/ with OS-specific implementations for Linux, macOS (Darwin), and Windows
  * Add artemis/runtime/supervisor.py for resilient process and agent runtime supervision
  * Add artemis/toolchain/ with dependency resolution and SDK descriptors
  * Add cross-platform launcher scripts (start.sh, start.bat) and installer scripts (scripts/install_deps.*)
- Core Enhancements & Diagnostics:
  * Enhance coordinate normalization, OCR API fallback, and perception pipeline
  * Add credential validation (credentials_validator.py) and system diagnostics
  * Update bilingual documentation (README.md, README_CN.md) and architecture diagrams
- Test Suite Expansion:
  * Add integration tests for cloud gateway, remote ADB, and Artemis login
  * Add unit tests covering core diagnostics, platform detection, toolchain, credentials validator, optional OCR, and MCP tools

Dockerfile

@@ -1,3 +1,17 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 FROM python:3.12-slim
 
 WORKDIR /app
@@ -10,52 +24,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     adb \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy application source code and apps
+# Copy application source code and configuration
 COPY artemis/ /app/artemis/
 COPY apps/ /app/apps/
+COPY mcp_server/ /app/mcp_server/
 COPY config/ /app/config/
 COPY pyproject.toml setup.py README.md LICENSE /app/
 
-# Install server and core dependencies
-RUN pip install --no-cache-dir \
-    uvicorn \
-    fastapi \
-    pydantic \
-    pydantic-settings \
-    python-dotenv \
-    sseclient-py \
-    websockets \
-    adbutils \
-    jinja2 \
-    colorama \
-    psutil \
-    httpx \
-    retry \
-    google-auth \
-    langchain \
-    langchain-core \
-    langchain-community \
-    langchain-google-genai \
-    langchain-google-vertexai \
-    langchain-mcp-adapters \
-    google-genai \
-    langgraph \
-    typer \
-    pillow \
-    packaging \
-    uiautomator2 \
-    opencv-python-headless \
-    uuid-utils \
-    posthog \
-    mcp \
-    inquirer \
-    rich \
-    requests \
-    imageio-ffmpeg \
-    langchain-openai
-
-# Install artemis package locally (no-deps to prevent pulling unnecessary heavy optional libraries)
-RUN pip install --no-cache-dir --no-deps -e /app
+# Install dependencies and artemis package
+RUN pip install --no-cache-dir -e /app
 
 ENV PYTHONUNBUFFERED=1
 ENV PYTHONPATH=/app