diff --git a/ROADMAP.md b/ROADMAP.md
index 8217bbc..8dc247f 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -27,10 +27,15 @@
 - [x] T11: Bot de Telegram como adapter (`infrastructure/bot/telegram_bot.py`, `AnswerFn` inyectado, completado 10 ago)
 - [x] T12: Composition root `scripts/run_telegram_bot.py` con wiring hybrid+rerank (completado 11 ago)
 - [x] T13: `answer_query` inyecta `retrieve: RetrieveFn` en vez de `store: VectorStore` (completado 11 ago)
-- [x] T14: Fix — `test_extract_text_pdf` sin depender de un PDF no versionado (completado 12 ago)
+- [x] T14: Fix — `test_extract_text_pdf` sin depender de un PDF no versionado
+      (marcado completado 12 ago, pero **no lo estaba**: seguía fallando en
+      clon limpio porque `_download_pdf` escribía a `data/papers/` sin crear
+      el directorio, y el test escribía sobre el `data/papers/` real del
+      repo. Corregido de verdad y verificado en un clon limpio real —
+      completado 13 ago)
 - [x] T15: Fix — límite de 4096 caracteres por mensaje de Telegram (completado 12 ago)
 - [x] T16: `scripts/ingest_documents.py` implementado — CLI delgado sobre `ingest_papers` (completado 12 ago)
-- [ ] T17: Merge de la rama de V1 real a `main`
+- [x] T17: Merge de la rama de V1 real a `main` (completado 13 ago, PR#4)
 
 ## Deuda técnica conocida
 - [ ] `ingestion_service.py` (`application/`) importa `httpx`, `fitz` y
diff --git a/src/researchos/application/services/ingestion_service.py b/src/researchos/application/services/ingestion_service.py
index f589cbc..23ad485 100644
--- a/src/researchos/application/services/ingestion_service.py
+++ b/src/researchos/application/services/ingestion_service.py
@@ -74,6 +74,7 @@ async def _download_pdf(paper: Paper) -> Path:
         response = await client.get(url)
         response.raise_for_status()
         # save pdf in local system
+        local_pdf_path.parent.mkdir(parents=True, exist_ok=True)
         with open(local_pdf_path, "wb") as f:
             f.write(response.content)
 
diff --git a/tests/unit/application/test_ingestion_service.py b/tests/unit/application/test_ingestion_service.py
index d85dc7e..9a42896 100644
--- a/tests/unit/application/test_ingestion_service.py
+++ b/tests/unit/application/test_ingestion_service.py
@@ -18,7 +18,9 @@ def _fake_pdf_bytes() -> bytes:
 
 @pytest.mark.unit
 @pytest.mark.asyncio
-async def test_extract_text_pdf():
+async def test_extract_text_pdf(tmp_path: Path, monkeypatch: pytest.MonkeyPatch):
+    monkeypatch.setattr("researchos.application.services.ingestion_service.PAPERS_DIR", tmp_path)
+
     paper = Paper(
         source_id="1",
         source="arxiv",