feat: Implement multi-database architecture

This commit introduces a three-database architecture to the application,
as specified in the `db_logic.md` file.

The changes include:
- A SQL initialization script (`db/init/init.sql`) to create the
  `USERS_ALMA`, `vanity_hr`, and `vanity_attendance` databases and their
  respective tables.
- SQLAlchemy models for all tables, organized into separate files
  within the `models` directory.
- Refactoring of the database connection logic in `modules/database.py`
  to support connections to all three databases.
- Creation of a `modules/logger.py` to handle request logging to the
  `USERS_ALMA` database.
- Updates to `docker-compose.yml` to mount the initialization script and
  build the bot image locally.
- Updates to `.env.example` to include the new database environment
  variables.
- Restoration of the data dictionary to `db_tasks.md`.

models/users_alma_models.py

@@ -0,0 +1,31 @@
+from sqlalchemy import create_engine, Column, Integer, String, Enum, TIMESTAMP
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.sql import func
+from datetime import datetime
+
+Base = declarative_base()
+
+class RequestLog(Base):
+    __tablename__ = 'request_logs'
+    __table_args__ = {'schema': 'USERS_ALMA'}
+    id = Column(Integer, primary_key=True)
+    telegram_id = Column(String(50))
+    username = Column(String(100))
+    command = Column(String(100))
+    message = Column(String(500))
+    created_at = Column(TIMESTAMP, server_default=func.now())
+
+class User(Base):
+    __tablename__ = 'users'
+    __table_args__ = {'schema': 'USERS_ALMA'}
+
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    username = Column(String(50), unique=True)
+    role = Column(Enum('admin', 'manager', 'user'))
+    first_name = Column(String(100))
+    last_name = Column(String(100))
+    email = Column(String(100), unique=True)
+    cell_phone = Column(String(20))
+    telegram_id = Column(String(50), unique=True)
+    created_at = Column(TIMESTAMP, server_default=func.now())
+    updated_at = Column(TIMESTAMP, server_default=func.now(), onupdate=func.now())

models/vanity_attendance_models.py

@@ -0,0 +1,32 @@
+from sqlalchemy import create_engine, Column, Integer, String, Date, Time, BigInteger, ForeignKey
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import relationship
+
+Base = declarative_base()
+
+class AsistenciaRegistros(Base):
+    __tablename__ = 'asistencia_registros'
+    __table_args__ = {'schema': 'vanity_attendance'}
+
+    id_asistencia = Column(Integer, primary_key=True, autoincrement=True)
+    numero_empleado = Column(String(15), ForeignKey('vanity_hr.data_empleadas.numero_empleado'))
+    fecha = Column(Date)
+    hora_entrada_real = Column(Time)
+    hora_salida_real = Column(Time)
+    minutos_retraso = Column(Integer)
+    minutos_extra = Column(Integer)
+    sucursal_registro = Column(String(50))
+    telegram_id_usado = Column(BigInteger)
+    empleada = relationship("DataEmpleadas", backref="asistencia_registros")
+
+class HorarioEmpleadas(Base):
+    __tablename__ = 'horario_empleadas'
+    __table_args__ = {'schema': 'vanity_attendance'}
+
+    id_horario = Column(Integer, primary_key=True, autoincrement=True)
+    numero_empleado = Column(String(15), ForeignKey('vanity_hr.data_empleadas.numero_empleado'))
+    telegram_id = Column(BigInteger)
+    dia_semana = Column(String(20))
+    hora_entrada_teorica = Column(Time)
+    hora_salida_teorica = Column(Time)
+    empleada = relationship("DataEmpleadas", backref="horario_empleadas")

models/vanity_hr_models.py

@@ -0,0 +1,92 @@
+from sqlalchemy import create_engine, Column, Integer, String, Enum, TIMESTAMP, Date, Text, BigInteger, DateTime
+from sqlalchemy.dialects.mysql import TINYINT
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.sql import func
+from sqlalchemy import ForeignKey
+from sqlalchemy.orm import relationship
+
+Base = declarative_base()
+
+class DataEmpleadas(Base):
+    __tablename__ = 'data_empleadas'
+    __table_args__ = {'schema': 'vanity_hr'}
+
+    numero_empleado = Column(String(15), primary_key=True)
+    puesto = Column(String(50))
+    sucursal = Column(String(50))
+    fecha_ingreso = Column(Date)
+    estatus = Column(String(15))
+    nombre_completo = Column(String(150))
+    nombre = Column(String(50))
+    nombre_preferido = Column(String(50))
+    apellido_paterno = Column(String(50))
+    apellido_materno = Column(String(50))
+    fecha_nacimiento = Column(Date)
+    lugar_nacimiento = Column(String(50))
+    rfc = Column(String(13), unique=True)
+    curp = Column(String(18), unique=True)
+    email = Column(String(100))
+    telefono_celular = Column(String(15))
+    domicilio_calle = Column(String(255))
+    domicilio_numero_exterior = Column(String(10))
+    domicilio_numero_interior = Column(String(10))
+    domicilio_numero_texto = Column(String(50))
+    domicilio_colonia = Column(String(255))
+    domicilio_codigo_postal = Column(String(10))
+    domicilio_ciudad = Column(String(100))
+    domicilio_estado = Column(String(50))
+    domicilio_completo = Column(String(255))
+    emergencia_nombre = Column(String(100))
+    emergencia_telefono = Column(String(15))
+    emergencia_parentesco = Column(String(50))
+    referencia_1_nombre = Column(String(100))
+    referencia_1_telefono = Column(String(15))
+    referencia_1_tipo = Column(String(20))
+    referencia_2_nombre = Column(String(100))
+    referencia_2_telefono = Column(String(15))
+    referencia_2_tipo = Column(String(20))
+    referencia_3_nombre = Column(String(100))
+    referencia_3_telefono = Column(String(15))
+    referencia_3_tipo = Column(String(20))
+    origen_registro = Column(String(50))
+    telegram_usuario = Column(String(50))
+    telegram_chat_id = Column(BigInteger)
+    bot_version = Column(String(20))
+    fecha_registro = Column(DateTime)
+    tiempo_registro_minutos = Column(Integer)
+    fecha_procesamiento = Column(DateTime)
+
+class Vacaciones(Base):
+    __tablename__ = 'vacaciones'
+    __table_args__ = {'schema': 'vanity_hr'}
+
+    vacaciones_id = Column(String(50), primary_key=True)
+    numero_empleado = Column(String(15), ForeignKey('vanity_hr.data_empleadas.numero_empleado'))
+    tipo_solicitud = Column(String(20))
+    estatus = Column(Enum('pendiente', 'aprobado', 'rechazado', 'cancelado'))
+    fecha_inicio = Column(Date)
+    fecha_fin = Column(Date)
+    dias_solicitados = Column(Integer)
+    dias_habiles = Column(Integer)
+    motivo = Column(Text)
+    con_goce_sueldo = Column(TINYINT)
+    fecha_solicitud = Column(DateTime)
+    fecha_procesamiento = Column(DateTime)
+    origen = Column(String(20))
+    afecta_nomina = Column(TINYINT)
+    empleada = relationship("DataEmpleadas")
+
+class Permisos(Base):
+    __tablename__ = 'permisos'
+    __table_args__ = {'schema': 'vanity_hr'}
+
+    permiso_id = Column(String(50), primary_key=True)
+    numero_empleado = Column(String(15), ForeignKey('vanity_hr.data_empleadas.numero_empleado'))
+    categoria = Column(Enum('PERSONAL', 'MEDICO', 'OFICIAL', 'OTRO'))
+    estatus = Column(Enum('pendiente', 'aprobado', 'rechazado', 'cancelado'))
+    fecha_inicio = Column(Date)
+    horario_especifico = Column(String(50))
+    motivo = Column(Text)
+    con_goce_sueldo = Column(TINYINT)
+    afecta_nomina = Column(TINYINT)
+    empleada = relationship("DataEmpleadas")