sync file-type support across upload/convert and fix collected_at timezone handling

internal/parser/vendors/inspur/sel_test.go

@@ -0,0 +1,33 @@
+package inspur
+
+import (
+	"testing"
+	"time"
+)
+
+func TestParseSELListWithLocation_UsesProvidedTimezone(t *testing.T) {
+	content := []byte("sel elist:\n1,02/28/2026,04:18:18,Sensor X,Event,Asserted\n")
+	shanghai, err := time.LoadLocation("Asia/Shanghai")
+	if err != nil {
+		t.Fatalf("load location: %v", err)
+	}
+
+	events := ParseSELListWithLocation(content, shanghai)
+	if len(events) != 1 {
+		t.Fatalf("expected 1 event, got %d", len(events))
+	}
+
+	// 04:18:18 +08:00 == 20:18:18Z (previous day)
+	want := time.Date(2026, 2, 27, 20, 18, 18, 0, time.UTC)
+	if !events[0].Timestamp.UTC().Equal(want) {
+		t.Fatalf("unexpected timestamp: got %s want %s", events[0].Timestamp.UTC(), want)
+	}
+}
+
+func TestParseTimezoneConfigLocation(t *testing.T) {
+	content := []byte("[TimeZoneConfig]\ntimezone=Asia/Shanghai\n")
+	got := parseTimezoneConfigLocation(content)
+	if got != "Asia/Shanghai" {
+		t.Fatalf("unexpected timezone: %q", got)
+	}
+}