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/sel.go

@@ -0,0 +1,98 @@
+package inspurlegacy
+
+import (
+	"strings"
+	"time"
+
+	"git.mchus.pro/mchus/logpile/internal/models"
+)
+
+const selTimeLayout = "01/02/2006 15:04:05"
+
+// criticalSELPhrases escalate an otherwise-Info SEL record to critical.
+var criticalSELPhrases = []string{
+	"ac lost", "power supply failure", "redundancy lost", "non-recoverable",
+	"uncorrectable", "input under voltage error",
+	"processor error", "thermal trip", "asserted - critical",
+}
+
+// warningSELPhrases escalate an otherwise-Info SEL record to warning.
+var warningSELPhrases = []string{
+	"correctable", "warning", "degraded", "under voltage warning",
+	"redundancy degraded", "predictive failure",
+}
+
+// ParseSELLog parses the pipe-delimited sel.log. Real records are
+// "id | MM/DD/YYYY | HH:MM:SS | sensor | event | Asserted|Deasserted".
+// "Pre-Init Time-stamp" records have no usable timestamp and are skipped.
+func ParseSELLog(content []byte) []models.Event {
+	var events []models.Event
+	for _, line := range strings.Split(string(content), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		fields := splitTrim(line, "|")
+		// Real records have 5 or 6 columns: id | date | time | sensor | event
+		// [ | Asserted/Deasserted ]. The direction is folded into the event text
+		// on some records (e.g. "Predictive Failure Asserted").
+		if len(fields) < 5 {
+			continue
+		}
+		date, tm := fields[1], fields[2]
+		if !strings.Contains(date, "/") {
+			continue // Pre-Init Time-stamp and similar
+		}
+		ts, err := time.Parse(selTimeLayout, date+" "+tm)
+		if err != nil || bogusYear(ts) {
+			continue
+		}
+		sensor := fields[3]
+		event := fields[4]
+		direction := ""
+		if len(fields) >= 6 {
+			direction = fields[5]
+		}
+
+		severity := selSeverity(event, direction)
+
+		events = append(events, models.Event{
+			ID:          "sel_" + strings.TrimSpace(fields[0]),
+			Timestamp:   ts,
+			Source:      "BMC/SEL",
+			SensorType:  "sel",
+			SensorName:  sensor,
+			EventType:   direction,
+			Severity:    severity,
+			Description: strings.TrimSpace(sensor + ": " + event),
+			RawData:     line,
+		})
+	}
+	return events
+}
+
+func selSeverity(event, direction string) models.Severity {
+	if strings.EqualFold(strings.TrimSpace(direction), "Deasserted") {
+		return models.SeverityInfo
+	}
+	low := strings.ToLower(event)
+	for _, p := range criticalSELPhrases {
+		if strings.Contains(low, p) {
+			return models.SeverityCritical
+		}
+	}
+	for _, p := range warningSELPhrases {
+		if strings.Contains(low, p) {
+			return models.SeverityWarning
+		}
+	}
+	return models.SeverityInfo
+}
+
+func splitTrim(s, sep string) []string {
+	parts := strings.Split(s, sep)
+	for i := range parts {
+		parts[i] = strings.TrimSpace(parts[i])
+	}
+	return parts
+}