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/Security/Encriptar.py

@@ -0,0 +1,44 @@
+import base64
+import os
+from cryptography.fernet import Fernet
+from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
+from cryptography.hazmat.primitives import hashes
+from cryptography.hazmat.backends import default_backend
+
+class Encriptar_fernet:
+    @staticmethod
+    def _derivar_clave(password: str, salt: bytes) -> bytes:
+        """
+        Deriva una clave segura a partir de la contraseña y el salt usando PBKDF2HMAC.
+        """
+        kdf = PBKDF2HMAC(
+            algorithm=hashes.SHA256(),
+            length=32,
+            salt=salt,
+            iterations=100_000,
+            backend=default_backend()
+        )
+        return base64.urlsafe_b64encode(kdf.derive(password.encode()))
+
+    @classmethod
+    def encriptar(cls, texto: str, password: str) -> bytes:
+        """
+        Encripta un texto con una clave derivada de la contraseña + salt aleatorio.
+        El salt es embebido al inicio del token cifrado.
+        """
+        salt = os.urandom(16)  # 128 bits de salt aleatorio
+        key = cls._derivar_clave(password, salt)
+        fernet = Fernet(key)
+        token = fernet.encrypt(texto.encode('utf-8'))
+        return salt + token  # Embebemos el salt al principio
+
+    @classmethod
+    def desencriptar(cls, token_con_salt: bytes, password: str) -> str:
+        """
+        Extrae el salt del token, deriva la clave, y desencripta el texto.
+        """
+        salt = token_con_salt[:16]
+        token = token_con_salt[16:]
+        key = cls._derivar_clave(password, salt)
+        fernet = Fernet(key)
+        return fernet.decrypt(token).decode('utf-8')

domains/Security/GenerarIDs.py

@@ -0,0 +1,67 @@
+import uuid
+import datetime
+import re
+
+class GeneradorIDUnico:
+    def __init__(self, tipo_objeto: str):
+        if not re.match(r'^[A-Z]{4}$', tipo_objeto):
+            raise ValueError("El tipo de objeto debe tener 4 letras en mayúscula (ej: ABCD)")
+        self.tipo_objeto = tipo_objeto
+
+    def generar(self):
+        f = datetime.datetime.now().strftime('%Y%m%d')
+        u = uuid.uuid4().hex[:9]
+        n = ''.join(filter(str.isdigit, uuid.uuid4().hex))[:8]
+        n = n.ljust(8, '0')
+        t = sum(int(c) for c in f)
+        t += sum(int(c, 16) for c in u)
+        t += sum(int(c) for c in n)
+        c = str(t % 10)
+        l = t + int(c)
+        d = hex(l % 16)[-1]
+
+        return f"{self.tipo_objeto}{f}-{d}{u}{c}{n}"
+
+
+    @staticmethod
+    def verificar(id_: str) -> bool:
+        try:
+            f = id_[4:12]
+            cuerpo = id_[13:]
+            d = cuerpo[0]
+            u = cuerpo[1:10]
+            c = cuerpo[10]
+            n = cuerpo[11:19]
+            t = sum(int(c) for c in f)
+            t += sum(int(c, 16) for c in u)
+            t += sum(int(c) for c in n)
+            esd = str(t % 10)
+            l = t + int(esd)
+            esh = hex(l % 16)[-1]
+            return (
+                d.lower() == esh.lower() and
+                c == esd
+            )
+        except Exception:
+            return False
+
+    @staticmethod
+    def tamaño_bytes_bits(id_: str):
+        """Devuelve el tamaño del ID en bytes y bits (UTF-8)"""
+        bytes_ = len(id_.encode('utf-8'))
+        return bytes_, bytes_ * 8
+
+
+if __name__ == "__main__":
+    # Ejemplo de uso
+    generador = GeneradorIDUnico("FACT")
+    nuevo_id = generador.generar()
+    print(f"Nuevo ID generado: {nuevo_id}")
+
+    # Verificación del ID
+    es_valido = GeneradorIDUnico.verificar(nuevo_id)
+    print(f"El ID es válido: {es_valido}")
+
+    # Tamaño del ID
+    bytes_, bits_ = GeneradorIDUnico.tamaño_bytes_bits(nuevo_id)
+    print(f"Tamaño del ID: {bytes_} bytes / {bits_} bits")