feat(inspur_legacy): new parser for pre-Kaytus Inspur onekeylog

Older AMI-BMC Inspur onekeylog archives (NF5466M5 / NF5280M5 generation)
opened to an empty result: they carry none of the files the inspur parser
keys on (no asset.json, devicefrusdr.log, selelist.csv or component.log).

New package internal/parser/vendors/inspur_legacy (vendor id inspur_legacy),
separate from inspur:
- binary IPMI FRU decode (FRU.bin) -> board identity
- Inspur_AssetInfoInventory.log -> CPU / memory / PCIe / PSU inventory
- events from Inspur_<model>_<serial>_IDL, sel.log, blackbox.log,
  MegaRAID raid0.log, and the flat AMI <severity>.log files
- no live sensors in this archive class -> recorded as a collection error
- BMC clock timestamps before 2010 dropped as un-set (1970 / ~2005 RTC)

Registry: add optional PrioritizedParser { DetectPriority() int } so a
confidence tie is broken by specificity. inspur_legacy returns 10 and also
declines (Detect 0) when modern Kaytus markers are present, so the two
Inspur parsers never fight over a newer dump.

Docs: ADL-065, 06-parsers.md, releases/v1.32.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017VL8wLGD6Lnp6hZCpqT6cZ

internal/parser/vendors/inspur_legacy/blackbox.go

@@ -0,0 +1,98 @@
+package inspurlegacy
+
+import (
+	"regexp"
+	"strings"
+	"time"
+
+	"git.mchus.pro/mchus/logpile/internal/models"
+)
+
+var blackboxLineRe = regexp.MustCompile(`^\[(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2})\]\s*:\s*(.*)$`)
+
+const blackboxTimeLayout = "2006-01-02 15:04:05"
+
+// blackboxCritical / blackboxWarning classify the free-text message.
+var (
+	blackboxCritical = []string{"fault", "error", "under voltage protection", "power good detect pin changed from 1 to 0", "critical"}
+	blackboxWarning  = []string{"warning", "predfail", "changed from 0 to 1"}
+)
+
+// ParseBlackbox parses blackbox.log ("[YYYY-MM-DD HH:MM:SS] : message"), the
+// BMC's persistent power/thermal/RAID fault ring buffer.
+func ParseBlackbox(content []byte) []models.Event {
+	var events []models.Event
+	seq := 0
+	for _, line := range strings.Split(string(content), "\n") {
+		line = strings.TrimSpace(line)
+		m := blackboxLineRe.FindStringSubmatch(line)
+		if m == nil {
+			continue
+		}
+		ts, err := time.Parse(blackboxTimeLayout, m[1])
+		if err != nil || bogusYear(ts) {
+			continue
+		}
+		msg := strings.TrimSpace(m[2])
+		msg = strings.TrimPrefix(msg, "[*]")
+		seq++
+
+		events = append(events, models.Event{
+			ID:          "blackbox_" + ts.Format("20060102T150405") + "_" + itoa(seq),
+			Timestamp:   ts,
+			Source:      "BMC/blackbox",
+			SensorType:  "blackbox",
+			SensorName:  blackboxSubject(msg),
+			Severity:    classify(msg, blackboxCritical, blackboxWarning),
+			Description: msg,
+			RawData:     line,
+		})
+	}
+	return events
+}
+
+var blackboxSubjectRe = regexp.MustCompile(`^(PSU-?\d+|psu \d+|RAID|raid\s*\d+|CPU-?\d+|FAN-?\d+)`)
+
+func blackboxSubject(msg string) string {
+	if m := blackboxSubjectRe.FindString(msg); m != "" {
+		return strings.TrimSpace(m)
+	}
+	return "blackbox"
+}
+
+func classify(msg string, critical, warning []string) models.Severity {
+	low := strings.ToLower(msg)
+	for _, p := range critical {
+		if strings.Contains(low, p) {
+			return models.SeverityCritical
+		}
+	}
+	for _, p := range warning {
+		if strings.Contains(low, p) {
+			return models.SeverityWarning
+		}
+	}
+	return models.SeverityInfo
+}
+
+func itoa(i int) string {
+	if i == 0 {
+		return "0"
+	}
+	neg := i < 0
+	if neg {
+		i = -i
+	}
+	var b [20]byte
+	pos := len(b)
+	for i > 0 {
+		pos--
+		b[pos] = byte('0' + i%10)
+		i /= 10
+	}
+	if neg {
+		pos--
+		b[pos] = '-'
+	}
+	return string(b[pos:])
+}