feat: Implement main application shell with navigation and color scheme toggle

- Added Appshell component with responsive navbar and main content area
- Integrated ColorSchemeToggle for light/dark mode switching
- Created Welcome component with styled title and introductory text
- Developed ChatPage for LLM interaction with WebSocket support
- Implemented Biblioteca for managing notes with rich text editor
- Added LoginPage for user authentication with error handling
- Introduced MessageList and MessageBubble components for chat messages
- Styled components with CSS modules for consistent design

domains/Llms/MCPs/McpClient_Registry.py

@@ -0,0 +1,56 @@
+from domains.Llms.MCPs.McpClient import MCPClient
+from typing import Any
+
+class ClientRegistry:
+    def __init__(self):
+        self._clients: dict[str, MCPClient] = {}
+
+    def add(self, name: str, wrapper: MCPClient) -> None:
+        self._clients[name] = wrapper
+
+    def get(self, name: str) -> MCPClient:
+        if name not in self._clients:
+            raise KeyError(f"Cliente '{name}' no encontrado en el registro.")
+        return self._clients[name]
+
+    def all(self) -> dict[str, MCPClient]:
+        return self._clients
+
+    def list_names(self) -> list[str]:
+        return list(self._clients.keys())
+
+    def __contains__(self, name: str) -> bool:
+        return name in self._clients
+    
+    async def listar_tools_por_cliente(self) -> dict[str, Any]:
+        resultado = {"tools": {}, "errores": {}}
+        for name, wrapper in self._clients.items():
+            try:
+                async with wrapper:
+                    resultado["tools"][name] = await wrapper.list_tools()
+            except Exception as e:
+                resultado["errores"][name] = str(e)
+                resultado["tools"][name] = []
+        return resultado
+
+    async def listar_prompts_por_cliente(self) -> dict[str, Any]:
+        resultado = {"prompts": {}, "errores": {}}
+        for name, wrapper in self._clients.items():
+            try:
+                async with wrapper:
+                    resultado["prompts"][name] = await wrapper.list_prompts()
+            except Exception as e:
+                resultado["errores"][name] = str(e)
+                resultado["prompts"][name] = []
+        return resultado
+
+    async def listar_resources_por_cliente(self) -> dict[str, Any]:
+        resultado = {"resources": {}, "errores": {}}
+        for name, wrapper in self._clients.items():
+            try:
+                async with wrapper:
+                    resultado["resources"][name] = await wrapper.list_resources()
+            except Exception as e:
+                resultado["errores"][name] = str(e)
+                resultado["resources"][name] = []
+        return resultado