feat(exporter): flag PCIe/GPU/NIC devices with degraded link width as Warning

Applies a single universal check (negotiated LinkWidth < MaxLinkWidth) in
convertPCIeFromDevices, the shared conversion path all vendor parsers feed
into, so a narrower-than-supported link (bad seat, bent connector, wrong
riser) surfaces as a Warning status regardless of which parser produced the
reading — instead of the previous OtrdDiagnoseComponent.json-only check that
only covered the newer HGX dump layout.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/exporter/reanimator_converter.go

@@ -998,6 +998,9 @@ func convertPCIeFromDevices(devices []models.HardwareDevice, collectedAt string)
 			float64(intFromDetailMap(d.Details, "power")),
 		)
 		status := normalizeStatus(d.Status, false)
+		if status != "Critical" && isPCIeLinkWidthDegraded(d.LinkWidth, d.MaxLinkWidth) {
+			status = "Warning"
+		}
 		meta := buildStatusMeta(status, d.StatusCheckedAt, d.StatusChangedAt, d.StatusHistory, d.ErrorDescription, collectedAt)
 		slot := firstNonEmptyString(d.Slot, d.BDF)
 		result = append(result, ReanimatorPCIe{
@@ -2649,6 +2652,15 @@ func normalizeStatus(status string, allowEmpty bool) string {
 	}
 }
 
+// isPCIeLinkWidthDegraded reports whether a device negotiated a narrower PCIe
+// link than the slot/device supports (e.g. x8 in an x16 slot) — a signal of a
+// bad seat, bent connector, or misconfigured riser. This runs once here, on
+// the shared LinkWidth/MaxLinkWidth fields every vendor parser populates, so
+// it applies uniformly regardless of which parser produced the reading.
+func isPCIeLinkWidthDegraded(linkWidth, maxLinkWidth int) bool {
+	return linkWidth > 0 && maxLinkWidth > 0 && linkWidth < maxLinkWidth
+}
+
 var (
 	ipv4Regex = regexp.MustCompile(`(?:^|[^0-9])((?:\d{1,3}\.){3}\d{1,3})(?:[^0-9]|$)`)
 )