feat(nlp-service): cap /parse query at 500 chars via Field(max_length=500)

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

nlp-service/models.py

@@ -1,10 +1,10 @@
 from __future__ import annotations
 from typing import Literal
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 
 
 class ParseRequest(BaseModel):
-    query: str
+    query: str = Field(max_length=500)
     lang: Literal["de", "en", "es"]
 
 

nlp-service/test_main.py

@@ -81,6 +81,11 @@ def test_parse_all_languages(client):
         assert r.json()["dateTo"] == "1920-12-31", f"Wrong dateTo for lang={lang}"
 
 
+def test_parse_exceeds_max_length_returns_422(client):
+    r = client.post("/parse", json={"query": "a" * 501, "lang": "de"})
+    assert r.status_code == 422
+
+
 def test_parse_internal_exception_does_not_leak_detail(client, monkeypatch):
     """500 errors must return generic message — never expose internal details."""
     import main as main_module