feat!: report the subscription as a license, not a warning (0.4.0)

get_device_warnings is gone; netOrk names the warnings from facts
(netOrk #1111). lldpd and the pending updates were already facts
(get_packages, get_available_updates). The subscription is now
get_licenses() from napalm-device-types 4.14's LicenseMixin: one
pve-subscription entry, the API status mapped to a LicenseStatus.

The old check compared against "NotFound" while the API answers
"notfound" (seen on all four nodes), so it never fired; the mapping is
case-insensitive.

napalm_proxmox/system_mixin.py

@@ -30,6 +30,15 @@ logger = logging.getLogger(__name__)
 
 _JsonDict = dict[str, Any]
 
+#: The subscription API's status (lower-cased) as a napalm-device-types
+#: ``LicenseStatus``; "new" and "suspended" have none of their own.
+_SUBSCRIPTION_STATUS = {
+    "notfound": "none",
+    "active": "active",
+    "invalid": "invalid",
+    "expired": "expired",
+}
+
 
 _PACKAGE_NAME = re.compile(r"^[a-zA-Z0-9][a-zA-Z0-9_.+:~-]*$")
 #: What may stand in an snmpd.conf value: no whitespace, no quote, no comment.
@@ -344,51 +353,29 @@ class ProxmoxSystemMixin:
         return result
 
     # ------------------------------------------------------------------ #
-    # Device warnings
+    # Licenses (napalm-device-types' LicenseMixin)
     # ------------------------------------------------------------------ #
 
-    def get_device_warnings(self) -> list[_JsonDict]:
-        """Return warnings for the Proxmox node.
+    def get_licenses(self) -> list[_JsonDict]:
+        """The node's subscription, as the API reports it.
 
-        Currently detects:
-        - lldpd not installed (LLDP neighbor discovery unavailable)
-        - Available package updates (via Proxmox APT API)
-        - Missing / invalid subscription
+        A fact for the caller: whether running without one is a problem is not
+        the driver's to say. An unreadable subscription reports nothing.
         """
-        warnings: list[_JsonDict] = []
-
-        # 0. LLDP daemon
-        try:
-            lldpd_path = self._exec_ssh_command("command -v lldpd 2>/dev/null").strip()
-            if not lldpd_path:
-                warnings.append({"code": "lldpd_not_installed"})
-        except Exception as exc:
-            logger.debug("Failed to check for lldpd: %s", exc)
-
-        # 1. Available package updates
-        try:
-            updates = self.get_available_updates()
-            if updates:
-                warnings.append({
-                    "code": "updates_available",
-                    "meta": {
-                        "count": len(updates),
-                        "packages": [u["name"] for u in updates],
-                    },
-                })
-        except Exception as exc:
-            logger.debug("Failed to check available updates: %s", exc)
-
-        # 2. Subscription status
-        try:
-            sub = self._get_node_subscription()
-            status = sub.get("status", "")
-            if status in ("NotFound", "Invalid", "Expired"):
-                warnings.append({"code": "no_subscription", "meta": {"status": status}})
-        except Exception as exc:
-            logger.debug("Failed to check subscription status: %s", exc)
-
-        return warnings
+        sub = self._get_node_subscription()
+        raw = str(sub.get("status", ""))
+        if not raw:
+            return []
+        lic: _JsonDict = {
+            "name": "pve-subscription",
+            "status": _SUBSCRIPTION_STATUS.get(raw.lower(), "unknown"),
+            "detail": sub.get("message") or raw,
+        }
+        if sub.get("productname"):
+            lic["edition"] = sub["productname"]
+        if sub.get("nextduedate"):
+            lic["expires"] = sub["nextduedate"]
+        return [lic]
 
     # ------------------------------------------------------------------ #
     # Services (systemd, through napalm-device-types' SystemdServicesMixin)