Fix: Agent-Rollout downloadete immer globale AGENT_VERSION statt Gruppen-Ziel (v2.5.0)

- downloadSetup() nutzte process.env.AGENT_VERSION statt der Patch-Gruppen-
  Zielversion → Staged Rollout (Test/Pilot/Produktion) hatte nie funktioniert,
  jeder Agent bekam beim Auto-Update immer dieselbe globale Version
- Fix: downloadSetup() löst jetzt per ?hostname=X die Gruppen-Zielversion auf,
  exakt wie checkin() es bereits tat
- ApiService.DownloadSetupAsync() schickt jetzt den Hostnamen mit
- Version: 2.4.0 → 2.5.0

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

agent-cs/AgentWorker.cs

@@ -6,7 +6,7 @@ namespace ITNexusAgent;
 
 public class AgentWorker
 {
-    private const string Version = "2.4.0";
+    private const string Version = "2.5.0";
     private const string DataDir = @"C:\ProgramData\IT Nexus Agent";
     private const string ConfigPath = @"C:\ProgramData\IT Nexus Agent\config.json";
     private const string StatusPath = @"C:\ProgramData\IT Nexus Agent\status.json";

agent-cs/IT-Nexus-Agent.csproj

@@ -7,8 +7,8 @@
     <UseWindowsForms>true</UseWindowsForms>
     <AssemblyName>IT-Nexus-Agent</AssemblyName>
     <RootNamespace>ITNexusAgent</RootNamespace>
-    <Version>2.3.0</Version>
-    <AssemblyVersion>2.3.0.0</AssemblyVersion>
+    <Version>2.5.0</Version>
+    <AssemblyVersion>2.5.0.0</AssemblyVersion>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <AllowUnsafeBlocks>false</AllowUnsafeBlocks>

agent-cs/Services/ApiService.cs

@@ -65,9 +65,9 @@ public class ApiService(string serverUrl, string agentKey)
         return await resp.Content.ReadAsByteArrayAsync();
     }
 
-    public async Task<byte[]> DownloadSetupAsync()
+    public async Task<byte[]> DownloadSetupAsync(string hostname)
     {
-        var req = BuildRequest(HttpMethod.Get, "/api/monitoring/agent-setup");
+        var req = BuildRequest(HttpMethod.Get, $"/api/monitoring/agent-setup?hostname={Uri.EscapeDataString(hostname)}");
         var resp = await _http.SendAsync(req);
         resp.EnsureSuccessStatusCode();
         return await resp.Content.ReadAsByteArrayAsync();

agent-cs/Services/CommandExecutor.cs

@@ -125,7 +125,7 @@ public class CommandExecutor(ApiService api, string hostname, string dataDir, st
 
     private async Task<string> UpdateAgent()
     {
-        var bytes = await _api.DownloadSetupAsync();
+        var bytes = await _api.DownloadSetupAsync(_hostname);
         if (bytes.Length < 512 * 1024) return "Download fehlgeschlagen - Installer zu klein";
 
         var setupPath = Path.Combine(_dataDir, "IT-Nexus-Agent-Setup-Update.exe");

agent-cs/setup.iss

@@ -1,5 +1,5 @@
 #define MyAppName "IT Nexus Agent"
-#define MyAppVersion "2.4.0"
+#define MyAppVersion "2.5.0"
 #define MyAppPublisher "Cereda Systems GmbH"
 #define MyAppURL "https://it-nexus.cereda-systems.de"
 #define MyAppExeName "IT-Nexus-Agent.exe"