feat(crm): PDF de cotización (formato maestro) + marca por tenant + envío por correo

- Modelo crm.quote_settings (emisor, logo, color, prefijo, términos) por compañía
  + columna quotes.pdf_file_key + migración con down().
- Generador PDF (formato maestro: emisor+logo, cliente, carga/ruta, costos,
  resumen, condiciones); logo incrustado como JPEG (Pillow).
- Endpoints: GET /quotes/{id}/pdf-url, POST /quotes/{id}/send-email (adjunta PDF),
  GET/PUT /quote-settings, POST /quote-settings/logo.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

backend/api/v1/modules/crm/quotes/routes.py

@@ -1,22 +1,76 @@
-from fastapi import APIRouter, Depends, Query, status
+from fastapi import APIRouter, Depends, File, Query, UploadFile, status
 from sqlalchemy.orm import Session
 
 from core.database import get_core_db
 from core.security import get_current_user
 
-from . import service
+from . import pdf_service, service
 from .dto import (
     QuoteCreate,
     QuoteItemCreate,
     QuoteItemResponse,
     QuoteItemUpdate,
     QuoteResponse,
+    QuoteSettingsInput,
+    QuoteSettingsResponse,
     QuoteUpdate,
+    SendQuoteEmailRequest,
 )
 
 router = APIRouter()
 
 
+# ----- Configuración de marca del formato de cotización -----
+
+@router.get("/quote-settings", response_model=QuoteSettingsResponse)
+def get_quote_settings(
+    company_id: int = Query(...),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    obj = pdf_service.get_settings(db, current_user["tenant_id"], company_id)
+    return obj or QuoteSettingsResponse()
+
+
+@router.put("/quote-settings", response_model=QuoteSettingsResponse)
+def save_quote_settings(
+    payload: QuoteSettingsInput,
+    company_id: int = Query(...),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    return pdf_service.upsert_settings(db, current_user["tenant_id"], company_id, payload.model_dump(exclude_unset=True))
+
+
+@router.post("/quote-settings/logo", response_model=QuoteSettingsResponse)
+async def upload_quote_logo(
+    company_id: int = Query(...),
+    file: UploadFile = File(...),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    from core.storage_s3 import put_object_bytes
+    tenant_id = current_user["tenant_id"]
+    content = await file.read()
+    safe = (file.filename or "logo").replace("/", "-")
+    key = f"tenants/{tenant_id}/companies/{company_id}/crm-quote-logo/{safe}"
+    put_object_bytes(key, content, content_type=file.content_type or "image/png")
+    return pdf_service.set_logo_key(db, tenant_id, company_id, key)
+
+
+@router.get("/quote-settings/logo-url")
+def get_logo_url(
+    company_id: int = Query(...),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    from core.storage_s3 import presigned_get_url
+    obj = pdf_service.get_settings(db, current_user["tenant_id"], company_id)
+    if not obj or not obj.logo_file_key:
+        return {"url": None}
+    return {"url": presigned_get_url(obj.logo_file_key)}
+
+
 def _user_id(current_user: dict) -> str | None:
     return current_user.get("sub") or current_user.get("id")
 
@@ -98,6 +152,32 @@ def reject_quote(
     return service.reject_quote(db, quote_id, current_user["tenant_id"], company_id)
 
 
+@router.get("/quotes/{quote_id}/pdf-url")
+def quote_pdf_url(
+    quote_id: int,
+    company_id: int = Query(..., description="Company ID"),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    """Genera el PDF de la cotización (formato maestro + marca) y devuelve una URL."""
+    url = pdf_service.get_pdf_url(db, quote_id, current_user["tenant_id"], company_id)
+    return {"url": url}
+
+
+@router.post("/quotes/{quote_id}/send-email")
+async def quote_send_email(
+    quote_id: int,
+    payload: SendQuoteEmailRequest,
+    company_id: int = Query(..., description="Company ID"),
+    current_user: dict = Depends(get_current_user),
+    db: Session = Depends(get_core_db),
+):
+    """Genera el PDF y lo envía por correo (al cliente o al destinatario indicado)."""
+    return await pdf_service.send_quote_email(
+        db, quote_id, current_user["tenant_id"], company_id, payload.to, payload.subject, payload.message
+    )
+
+
 @router.post("/quotes/{quote_id}/clone", response_model=QuoteResponse, status_code=status.HTTP_201_CREATED)
 def clone_quote(
     quote_id: int,