Sync backend: FK idempotentes + tablas financieras en startup; relaciones usuarios/cotizaciones

Add field_validator for pais_id, ciudad_id, edad to convert blank to None

Fix startup: wrap usuario_permisos in try/except, remove FK to non-existent permisos table

Add cargo_funcion, ministerio_of, avance_audio columns to Miembro

rename miembro_id→id in MiembroInfoAdicional to match DB column

Replace create_all with raw CREATE TABLE IF NOT EXISTS for usuario_permisos

Add Base.metadata.create_all on startup to auto-create missing tables

Remove erroneously copied app/usuarios.py (belongs in app/routers/)

Add UsuarioPermiso model, schemas, and /usuarios/{id}/permisos endpoints

Add continente_id to PaisBase and PaisUpdate schemas

Fix CORS: remove trailing slashes from router paths

Add region field to Usuario model/schema

fix: use String columns instead of SAEnum to avoid enum serialization issues with asyncpg

fix: use native_enum=False on all SAEnum columns to return strings instead of enum objects

fix: replace enum types with str in schemas to avoid Pydantic v2 serialization issues

feat: return permiso names in /auth/mis-permisos; fix Home.jsx permission parsing

fix: hash passwords with bcrypt on create/update usuarios; fix auth login bug

Initial commit