raid: add storcli2 support for Tri-Mode controllers (SAS3808-iMR/9500 series)

storcli64 enumerates these controllers but reports zero drives; storcli2
is the tool Broadcom ships for Tri-Mode/MegaRAID8 hardware and uses a
compatible JSON schema for drive listing. Wires storcli2 into both the
collector (structured drive data) and the webui RAID Management page
(dedup so a controller isn't double-listed if storcli64 already sees it
with zero drives), plus techdump raw collection and the ISO vendor-tool
build step.

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

audit/internal/collector/raid.go

@@ -41,6 +41,9 @@ func collectRAIDStorage(pcie []schema.HardwarePCIeDevice) []schema.HardwareStora
 		if drives := collectStorcliDrives(); len(drives) > 0 {
 			out = append(out, drives...)
 		}
+		if drives := collectStorcli2Drives(); len(drives) > 0 {
+			out = append(out, drives...)
+		}
 		if drives := collectSASIrcuDrives("sas3ircu"); len(drives) > 0 {
 			out = append(out, drives...)
 		}
@@ -99,6 +102,63 @@ func collectStorcliDrives() []schema.HardwareStorage {
 	return drives
 }
 
+// collectStorcli2Drives covers Broadcom Tri-Mode controllers (e.g.
+// SAS3808-iMR/9500 series), which storcli64 can enumerate at a basic level
+// but whose drives it never finds — a separate tool/JSON schema (storcli2)
+// is required. storcli2's "Drive Information" array shape matches storcli64's
+// (confirmed against Broadcom's published drive-info-schema.json), so
+// parseStorcliDrivesJSON is reused as-is; only the controller enumeration
+// and per-controller invocation syntax differ (storcli2 wants an explicit
+// /cN target rather than storcli64's /call wildcard).
+func collectStorcli2Drives() []schema.HardwareStorage {
+	sysOut, err := raidToolQuery("storcli2", "show", "all", "J")
+	if err != nil {
+		slog.Info("raid: storcli2 unavailable", "err", err)
+		return nil
+	}
+	indices := parseStorcli2ControllerIndices(sysOut)
+	if len(indices) == 0 {
+		return nil
+	}
+
+	var drives []schema.HardwareStorage
+	for _, idx := range indices {
+		out, err := raidToolQuery("storcli2", "/c"+strconv.Itoa(idx)+"/eall/sall", "show", "all", "J")
+		if err != nil {
+			continue
+		}
+		drives = append(drives, parseStorcliDrivesJSON(out)...)
+	}
+	if len(drives) == 0 {
+		slog.Info("raid: storcli2 returned no drives")
+	}
+	return drives
+}
+
+// parseStorcli2ControllerIndices parses "storcli2 show all J" (Broadcom's
+// system-schema.json: Controllers[0].Response Data.System Overview[].Ctrl).
+func parseStorcli2ControllerIndices(raw []byte) []int {
+	var doc struct {
+		Controllers []struct {
+			ResponseData struct {
+				SystemOverview []struct {
+					Ctrl int `json:"Ctrl"`
+				} `json:"System Overview"`
+			} `json:"Response Data"`
+		} `json:"Controllers"`
+	}
+	if err := json.Unmarshal(raw, &doc); err != nil {
+		return nil
+	}
+	var indices []int
+	for _, c := range doc.Controllers {
+		for _, ov := range c.ResponseData.SystemOverview {
+			indices = append(indices, ov.Ctrl)
+		}
+	}
+	return indices
+}
+
 func collectSASIrcuDrives(tool string) []schema.HardwareStorage {
 	out, err := raidToolQuery(tool, "list")
 	if err != nil {