chore(tests): organize test scripts and beautify account creation email

- Moved scattered Python test scripts from root and 'admin/development/' to 'tests/'.
- Beautified the HTML email body for account creation links in 'app/methods/person_methods.py' with a modern responsive design.

tests/mcp_docker_explorer.py

@@ -0,0 +1,60 @@
+import asyncio
+import sys
+import json
+from mcp import ClientSession, StdioServerParameters
+from mcp.client.stdio import stdio_client
+
+async def run_docker_mcp_explorer():
+    # Define the server parameters to run the Docker MCP server via npx
+    # Using the official Docker MCP server from the Model Context Protocol organization
+    server_params = StdioServerParameters(
+        command="npx",
+        args=["-y", "@modelcontextprotocol/server-docker"],
+        env=None
+    )
+
+    print("--- Connecting to Docker MCP Server ---")
+    
+    try:
+        async with stdio_client(server_params) as (read, write):
+            async with ClientSession(read, write) as session:
+                # Initialize the session
+                print("Initializing session...")
+                await session.initialize()
+
+                # 1. List available tools
+                print("\n--- Available Tools ---")
+                tools_result = await session.list_tools()
+                for tool in tools_result.tools:
+                    print(f"- {tool.name}: {tool.description}")
+
+                # 2. Call 'docker_list_containers'
+                print("\n--- Calling 'docker_list_containers' ---")
+                # The official server tool name is 'docker_list_containers'
+                # It doesn't require arguments for a basic list
+                containers_result = await session.call_tool("docker_list_containers", arguments={})
+                
+                # The result comes back as a list of Content objects
+                if containers_result.content:
+                    for item in containers_result.content:
+                        if item.type == 'text':
+                            # Parse the text (which is usually a JSON string for this tool)
+                            try:
+                                containers = json.loads(item.text)
+                                print(f"Found {len(containers)} containers:")
+                                for c in containers:
+                                    status = c.get('Status', 'Unknown')
+                                    names = ", ".join(c.get('Names', []))
+                                    print(f"  [{c.get('Id')[:12]}] {names} ({status})")
+                            except json.JSONDecodeError:
+                                print(item.text)
+                else:
+                    print("No containers found or empty response.")
+
+    except Exception as e:
+        print(f"\nError: {e}")
+        if "npx" in str(e):
+            print("Ensure 'npx' is installed and available in your PATH.")
+
+if __name__ == "__main__":
+    asyncio.run(run_docker_mcp_explorer())