Web-Suche (Agent-Toggle mit Versionswahl), Admin-only Backup, Haiku 4.5

- Agent: Web-Suche als Dropdown (Deaktiviert / 2025 / 2026) statt bool
- AnthropicService: web_search Tool dynamisch nach Version einfügen
- Stream: server_tool_use + web_search_tool_result Events verarbeiten
- Chat-Frontend: web_search_start/end Events mit Suchindikator
- Dashboard: Badge zeigt Web-Suche mit Jahresversion
- UserRecord: IsAdmin Feld, DB-Migration is_admin Spalte
- AuthMiddleware: IsAdmin aus DB laden und in Context setzen
- BackupEndpoint: Admin-Check (403 für Nicht-Admins)
- AuthEndpoint: isAdmin in Login/Me Response
- Frontend: Backup-Section nur für Admins sichtbar
- Haiku 4.5 als Model-Option (Agent-Dropdown + ChatEndpoint)
- TODO: Cronjobs, Haiku ergänzt

Endpoints/AgentEndpoint.cs

@@ -62,7 +62,9 @@ public static class AgentEndpoint
             UseSoul = !body.TryGetProperty("useSoul", out var us) || us.GetBoolean(),
             UseIdentity = !body.TryGetProperty("useIdentity", out var ui) || ui.GetBoolean(),
             UseUserInfo = !body.TryGetProperty("useUserInfo", out var uu) || uu.GetBoolean(),
-            UseMemory = !body.TryGetProperty("useMemory", out var um) || um.GetBoolean()
+            UseMemory = !body.TryGetProperty("useMemory", out var um) || um.GetBoolean(),
+            UseWebSearch = body.TryGetProperty("webSearchVersion", out var wsv) && !string.IsNullOrEmpty(wsv.GetString()),
+            WebSearchVersion = body.TryGetProperty("webSearchVersion", out var wsv2) ? wsv2.GetString() ?? "" : ""
         };
 
         agent = await db.CreateAgent(agent);
@@ -93,6 +95,11 @@ public static class AgentEndpoint
         if (body.TryGetProperty("useIdentity", out var ui)) agent.UseIdentity = ui.GetBoolean();
         if (body.TryGetProperty("useUserInfo", out var uu)) agent.UseUserInfo = uu.GetBoolean();
         if (body.TryGetProperty("useMemory", out var um)) agent.UseMemory = um.GetBoolean();
+        if (body.TryGetProperty("webSearchVersion", out var wsv))
+        {
+            agent.WebSearchVersion = wsv.GetString() ?? "";
+            agent.UseWebSearch = !string.IsNullOrEmpty(agent.WebSearchVersion);
+        }
 
         await db.UpdateAgent(agent);
         memoryService.InitializeAgentFiles(agentId, agent.Name);

Endpoints/AuthEndpoint.cs

@@ -50,7 +50,8 @@ public static class AuthEndpoint
         {
             userId = user.UserId,
             username = user.Username,
-            displayName = user.DisplayName
+            displayName = user.DisplayName,
+            isAdmin = user.IsAdmin
         });
     }
 
@@ -91,7 +92,8 @@ public static class AuthEndpoint
         {
             userId = user.UserId,
             username = user.Username,
-            displayName = user.DisplayName
+            displayName = user.DisplayName,
+            isAdmin = user.IsAdmin
         });
     }
 }

Endpoints/BackupEndpoint.cs

@@ -2,6 +2,7 @@ using System;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
+using Gott.Extensions;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Routing;
@@ -15,8 +16,10 @@ public static class BackupEndpoint
         app.MapPost("/api/backup", HandleBackup);
     }
 
-    private static async System.Threading.Tasks.Task<IResult> HandleBackup()
+    private static async System.Threading.Tasks.Task<IResult> HandleBackup(HttpContext ctx)
     {
+        if (!ctx.IsAdmin())
+            return Results.Forbid();
         var dataDir = Path.Combine(AppContext.BaseDirectory, "data");
 
         if (!Directory.Exists(dataDir))

Endpoints/ChatEndpoint.cs

@@ -72,6 +72,7 @@ public static class ChatEndpoint
         {
             "opus" => "claude-opus-4-6",
             "sonnet" => "claude-sonnet-4-6",
+            "haiku" => "claude-haiku-4-5",
             _ => "claude-sonnet-4-6"
         };
 
@@ -185,7 +186,7 @@ public static class ChatEndpoint
         streamingTracker.Start(sessionId, chainId);
         try
         {
-            await anthropic.StreamChat(res, modelId, systemPrompt, messages, chainId, workspace, sessionId, agentId: agent.AgentId, useMemory: agent.UseMemory, maxIterations: maxIterations, toolChoice: toolChoice, cancellationToken: cancellationToken);
+            await anthropic.StreamChat(res, modelId, systemPrompt, messages, chainId, workspace, sessionId, agentId: agent.AgentId, useMemory: agent.UseMemory, webSearchVersion: agent.WebSearchVersion, maxIterations: maxIterations, toolChoice: toolChoice, cancellationToken: cancellationToken);
         }
         finally
         {