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

artemis/agents/flash/runner.py

@@ -22,6 +22,7 @@ import asyncio
 import base64
 import json
 from pathlib import Path
+import re
 import uuid
 
 from jinja2 import Template
@@ -439,13 +440,13 @@ class FlashRunner:
                                 elif kind == "direction" and isinstance(target_val, str):
                                     g_lower = target_val.lower()
                                     if "up" in g_lower:
-                                        norm_coords = [600, 800, 600, 200]
+                                        norm_coords = [600, 700, 600, 300]
                                     elif "down" in g_lower:
-                                        norm_coords = [600, 200, 600, 800]
+                                        norm_coords = [600, 300, 600, 700]
                                     elif "left" in g_lower:
-                                        norm_coords = [800, 500, 200, 500]
+                                        norm_coords = [750, 500, 250, 500]
                                     elif "right" in g_lower:
-                                        norm_coords = [200, 500, 800, 500]
+                                        norm_coords = [250, 500, 750, 500]
                                     if norm_coords:
                                         norm_start = norm_coords[:2]
                                         norm_end = norm_coords[2:]