feat(parse): carry per-channel ZC freq onto PeakValues (report + dict paths)

tests/test_zc_freq_columns.py

@@ -43,3 +43,45 @@ def test_migration_adds_zc_freq_columns_to_legacy_db(tmp_path: Path):
     for c in ZC_COLS:
         assert c in rows[0]            # present
         assert rows[0][c] is None      # NULL for the legacy row
+
+
+from minimateplus.models import PeakValues, Event
+from minimateplus import event_file_io
+from minimateplus.bw_ascii_report import BwAsciiReport, ChannelStats, MicStats
+
+
+def _report_with_freqs():
+    r = BwAsciiReport()
+    r.channels["Tran"] = ChannelStats(ppv_ips=0.075, zc_freq_hz=100.0, zc_freq_above_range=True)
+    r.channels["Vert"] = ChannelStats(ppv_ips=0.220, zc_freq_hz=85.0)
+    r.channels["Long"] = ChannelStats(ppv_ips=0.045, zc_freq_hz=73.0)
+    r.mic = MicStats(zc_freq_hz=51.0)
+    return r
+
+
+def test_apply_report_copies_zc_freq_onto_peakvalues():
+    ev = Event(index=0)
+    event_file_io.apply_report_to_event(ev, _report_with_freqs())
+    pv = ev.peak_values
+    assert pv.vert_zc_freq == 85.0
+    assert pv.tran_zc_freq == 100.0
+    assert pv.tran_zc_above_range is True
+    assert pv.vert_zc_above_range is False
+    assert pv.mic_zc_freq == 51.0
+
+
+def test_apply_bw_report_dict_copies_zc_freq():
+    ev = Event(index=0)
+    bw = {
+        "peaks": {
+            "tran": {"ppv_ips": 0.075, "zc_freq_hz": 100.0, "zc_freq_above_range": True},
+            "vert": {"ppv_ips": 0.220, "zc_freq_hz": 85.0},
+            "long": {"ppv_ips": 0.045, "zc_freq_hz": 73.0},
+        },
+        "mic": {"zc_freq_hz": 51.0, "zc_freq_above_range": False},
+    }
+    event_file_io.apply_bw_report_dict_to_event(ev, bw)
+    pv = ev.peak_values
+    assert pv.vert_zc_freq == 85.0
+    assert pv.tran_zc_above_range is True
+    assert pv.mic_zc_freq == 51.0