fix: align with v13 OpenAPI spec — jobTypeFilter, protection groups, alarms resiliency

- fetch_backups(): typeFilter → jobTypeFilter (spec parameter name fix)
- fetch_protection_groups(): new method via /api/v1/agents/protectionGroups
  (spec-recommended replacement for deprecated protectedComputers)
- fetch_alarms(): wrap in try/except — endpoint not in v13 spec, may 404
- _collect_instance(): fetch and expose protection_groups in response

main.py

@@ -189,6 +189,12 @@ async def _collect_instance(inst) -> dict | None:
         except Exception as e:
             errors.append(f"agents: {e}")
 
+        protection_groups = []
+        try:
+            protection_groups = await client.fetch_protection_groups()
+        except Exception as e:
+            errors.append(f"protection groups: {e}")
+
         try:
             agent_policies = await client.fetch_agent_policies()
         except Exception as e:
@@ -297,6 +303,7 @@ async def _collect_instance(inst) -> dict | None:
             "alarms": alarms_data,
             "agents": agents_data,
             "agent_policies": agent_policies,
+            "protection_groups": protection_groups,
             "restore_points": restore_points[:50] if restore_points else [],
         }
 
@@ -321,6 +328,7 @@ async def _collect_instance(inst) -> dict | None:
             "alarms": [],
             "agents": [],
             "agent_policies": [],
+            "protection_groups": [],
             "restore_points": [],
         }
         return error_result

veeam_client.py

@@ -278,7 +278,10 @@ class VeeamClient:
 
     async def fetch_alarms(self) -> list[dict]:
         if self._is_v12():
-            return await self._fetch_json_list("/api/v1/alarms")
+            try:
+                return await self._fetch_json_list("/api/v1/alarms")
+            except Exception:
+                return []
         return []
 
     async def fetch_backup_servers(self) -> list[dict]:
@@ -291,6 +294,11 @@ class VeeamClient:
             return await self._fetch_json_list("/api/v1/agents/protectedComputers")
         return []
 
+    async def fetch_protection_groups(self) -> list[dict]:
+        if self._is_v12():
+            return await self._fetch_json_list("/api/v1/agents/protectionGroups")
+        return []
+
     async def fetch_agent_policies(self) -> list[dict]:
         if self._is_v12():
             seen: set[str] = set()
@@ -336,7 +344,7 @@ class VeeamClient:
         ]
         for t in backup_types:
             try:
-                items = await self._fetch_json_list(f"/api/v1/backups?typeFilter={t}")
+                items = await self._fetch_json_list(f"/api/v1/backups?jobTypeFilter={t}")
                 for b in items:
                     bid = b.get("id") or b.get("Id") or ""
                     if bid and bid not in seen: