Update runtime ports and deployment defaults.

Switch backend/frontend to ports 8074/8075 and align Docker, CORS, frontend API base URL, and docs so deployment uses the new endpoints consistently.

backend/.env.example

@@ -9,7 +9,7 @@ API_KEY=change-me-in-production-min-16-chars
 DATABASE_URL=postgresql+psycopg://genexamenes:genexamenes@db:5432/genexamenes
 
 # --- CORS (orígenes del frontend, separados por coma) ---
-ALLOWED_ORIGINS=http://localhost:5173,http://localhost:3000
+ALLOWED_ORIGINS=http://localhost:8075
 
 # --- Rate limiting y tamaño de petición ---
 RATE_LIMIT_REQUESTS=60

backend/Dockerfile

@@ -23,6 +23,6 @@ RUN mkdir -p /app/uploads && chown -R app:app /app/uploads
 
 USER app
 
-EXPOSE 8000
+EXPOSE 8074
 
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8074"]

backend/app/core/config.py

@@ -10,7 +10,7 @@ class Settings(BaseSettings):
     api_prefix: str = ""
     api_key: str = Field(min_length=16)
     database_url: str = "postgresql+psycopg://genexamenes:genexamenes@localhost:5432/genexamenes"
-    allowed_origins: str = "http://localhost:5173,http://localhost:3000"
+    allowed_origins: str = "http://localhost:8075"
     rate_limit_requests: int = Field(default=60, ge=1)
     rate_limit_window_seconds: int = Field(default=60, ge=1)
     max_request_bytes: int = Field(default=1_048_576, ge=1_024)