feat: export service — DOCX, PDF, MD generation and download API

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/main.py

@@ -4,8 +4,10 @@ from fastapi import FastAPI
 from sqlalchemy import select
 
 from app.api.auth import router as auth_router
+from app.api.exports import router as exports_router
 from app.api.protocols import router as protocols_router
 from app.api.recordings import router as recordings_router
+from app.api.settings import router as settings_router
 from app.api.templates import router as templates_router
 from app.database import async_session
 from app.models.prompt_template import PromptTemplate
@@ -33,6 +35,8 @@ app.include_router(auth_router)
 app.include_router(recordings_router)
 app.include_router(protocols_router)
 app.include_router(templates_router)
+app.include_router(exports_router)
+app.include_router(settings_router)
 
 
 @app.get("/api/health")