Validate battery percentage range on manual edit; clamp HA values to 0-100

tests/test_acceptance.py

@@ -117,6 +117,26 @@ def test_edit_notes(seeded_client):
 # Battery — assign (per-battery, kept for special cases)
 # ------------------------------------------------------------------ #
 
+def test_edit_details_percentage_out_of_range_rejected(seeded_client):
+    for bad in ("150", "-5"):
+        resp = seeded_client.post("/battery/1/edit-details",
+                                  data={"battery_percentage": bad},
+                                  follow_redirects=True)
+        assert b"between 0 and 100" in resp.data
+    data = _json.loads(seeded_client.get("/export/all.json").data)
+    bat = next(b for b in data["batteries"] if b["id"] == 1)
+    assert bat["battery_percentage"] is None
+    assert data["pct_logs"] == []
+
+
+def test_edit_details_percentage_valid(seeded_client):
+    seeded_client.post("/battery/1/edit-details", data={"battery_percentage": "100"})
+    data = _json.loads(seeded_client.get("/export/all.json").data)
+    bat = next(b for b in data["batteries"] if b["id"] == 1)
+    assert bat["battery_percentage"] == 100
+    assert any(l["battery_id"] == 1 and l["source"] == "manual" for l in data["pct_logs"])
+
+
 def test_assign_battery(seeded_client):
     resp = seeded_client.post("/battery/1/assign",
                               data={"device_id": "1"},