fix: Versionskennung an statischen Dateien gegen veraltete Browser-Caches (v0.13.1)

Gecachte style.css ohne Tortenfarben ließ alle Segmente schwarz erscheinen.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

finance/tests/test_gui.py

@@ -599,7 +599,8 @@ def test_planungs_refresh_fehler_bricht_seiten_nicht(client, monkeypatch):
 def test_base_hat_doppelzaehlungs_dialog(client):
     client.post("/login", data={"username": "admin", "password": "geheim"})
     html = client.get("/").text
-    assert '<script src="/static/doppelzaehlung.js"></script>' in html
+    from app.version import get_version
+    assert f'<script src="/static/doppelzaehlung.js?v={get_version()}"></script>' in html
     assert '<dialog id="doppelzaehlung-dialog">' in html
     assert 'id="dz-abbrechen" autofocus' in html
     assert ">Trotzdem speichern</button>" in html
@@ -637,3 +638,18 @@ def test_vorschlag_formular_nutzt_json_form_post(client):
     from pathlib import Path
     src = Path("app/templates/planning.html").read_text(encoding="utf-8")
     assert re.search(r'class="inline-form" hx-ext="json-form" hx-post="/api/recurring"', src)
+
+
+def test_statische_dateien_mit_versionskennung(client):
+    # Cache-Busting: jede neue VERSION erzwingt frische CSS/JS im Browser,
+    # sonst zeigen gecachte Altstände z. B. schwarze Tortensegmente.
+    from app.version import get_version
+    v = get_version()
+    login = client.get("/login").text
+    assert f'href="/static/style.css?v={v}"' in login
+    assert re.search(r'/static/[^"?]+"', login) is None
+    client.post("/login", data={"username": "admin", "password": "geheim"})
+    html = client.get("/").text
+    for datei in ("style.css", "htmx.min.js", "sort.js", "doppelzaehlung.js"):
+        assert f'/static/{datei}?v={v}"' in html
+    assert re.search(r'/static/[^"?]+"', html) is None

finance/tests/test_sort_templates.py

@@ -17,7 +17,8 @@ def _follow_ids(html):
 
 def test_base_bindet_sort_js_ein(client):
     _login(client)
-    assert '<script src="/static/sort.js"></script>' in client.get("/").text
+    from app.version import get_version
+    assert f'<script src="/static/sort.js?v={get_version()}"></script>' in client.get("/").text
 
 
 def test_planung_folgezeilen_markiert(client, db):