Limit serial workflows to IOM1 only — IOM2 unreachable over serial

The serial cable connects to IOM1's console port. IOM2 cannot be queried
or configured via the serial connection. Updated all serial-path code to
reflect this:

workflow_serial.py:
- fetch_current_config: query IOM1 only, single-row table
- collect_network_config: prompt for IOM1 settings only, drop IOM2 section
- apply_configuration: apply to IOM1 only, single-row result table
- print_summary: IOM1-only table, updated warning text

workflow_check.py (_check_via_serial):
- Query IOM1 only for network settings, IOM firmware, and Fabric Card firmware

CLAUDE.md updated to document the IOM1-only serial limitation.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

modules/workflow_check.py

@@ -97,54 +97,49 @@ def _check_via_serial():
         time.sleep(2)
         return
 
-    rule("Querying IOM Status")
-    info("Querying network settings and firmware versions via serial console...")
+    rule("Querying IOM1 Status")
+    info("Querying IOM1 network settings and firmware versions via serial console...")
+    info("Note: only IOM1 is reachable over the serial connection.")
     print()
 
-    net_rows = []
-    fw_rows  = []
+    # ── Network settings ───────────────────────────────────────────────────────
+    net_ok, net_data = _serial_redfish_request(
+        ser, password, "GET",
+        "/redfish/v1/Managers/IOM1/EthernetInterfaces/1",
+    )
+    if net_ok and isinstance(net_data, dict):
+        dhcp, ip, gw, nm, origin = _parse_network_data(net_data)
+        mode = _c(C.CYN, "DHCP") if dhcp else _c(C.GRN, "Static")
+        net_rows = [["IOM1", mode, origin, ip, gw, nm]]
+    else:
+        net_rows = [["IOM1", _c(C.RED, "No response"), "--", "--", "--", "--"]]
+        error(f"IOM1 network query failed: {net_data}")
 
-    for iom in ("IOM1", "IOM2"):
-        # ── Network settings ───────────────────────────────────────────────────
-        net_ok, net_data = _serial_redfish_request(
-            ser, password, "GET",
-            f"/redfish/v1/Managers/{iom}/EthernetInterfaces/1",
-        )
-        if net_ok and isinstance(net_data, dict):
-            dhcp, ip, gw, nm, origin = _parse_network_data(net_data)
-            mode = _c(C.CYN, "DHCP") if dhcp else _c(C.GRN, "Static")
-            net_rows.append([iom, mode, origin, ip, gw, nm])
-        else:
-            net_rows.append([iom, _c(C.RED, "No response"), "--", "--", "--", "--"])
-            error(f"{iom} network query failed: {net_data}")
+    # ── IOM firmware version ───────────────────────────────────────────────────
+    iom_ok, iom_data = _serial_redfish_request(
+        ser, password, "GET",
+        "/redfish/v1/Managers/IOM1",
+    )
+    iom_ver = (
+        iom_data.get("FirmwareVersion", "Unknown")
+        if (iom_ok and isinstance(iom_data, dict))
+        else _c(C.RED, "Unreachable")
+    )
 
-        # ── IOM firmware version ───────────────────────────────────────────────
-        iom_ok, iom_data = _serial_redfish_request(
-            ser, password, "GET",
-            f"/redfish/v1/Managers/{iom}",
-        )
-        iom_ver = (
-            iom_data.get("FirmwareVersion", "Unknown")
-            if (iom_ok and isinstance(iom_data, dict))
-            else _c(C.RED, "Unreachable")
-        )
+    # ── Fabric card firmware version ───────────────────────────────────────────
+    fab_ok, fab_data = _serial_redfish_request(
+        ser, password, "GET",
+        "/redfish/v1/Chassis/IOM1/NetworkAdapters/1",
+    )
+    fab_ver = (
+        (fab_data.get("Oem", {})
+                 .get("Version", {})
+                 .get("ActiveFirmwareVersion", "Unknown"))
+        if (fab_ok and isinstance(fab_data, dict))
+        else _c(C.RED, "Unreachable")
+    )
 
-        # ── Fabric card firmware version ───────────────────────────────────────
-        fab_ok, fab_data = _serial_redfish_request(
-            ser, password, "GET",
-            f"/redfish/v1/Chassis/{iom}/NetworkAdapters/1",
-        )
-        fab_ver = (
-            (fab_data.get("Oem", {})
-                     .get("Version", {})
-                     .get("ActiveFirmwareVersion", "Unknown"))
-            if (fab_ok and isinstance(fab_data, dict))
-            else _c(C.RED, "Unreachable")
-        )
-
-        fw_rows.append([iom, iom_ver, fab_ver])
-
-    _print_results(net_rows, fw_rows)
+    _print_results(net_rows, [["IOM1", iom_ver, fab_ver]])
     close_serial_connection(ser, device)