Token-Optimierung: Prompt Caching + Tool-Result-Truncation in History

Services/DatabaseService.cs

@@ -122,6 +122,8 @@ public class DatabaseService
         TryAddColumn(conn, "sessions", "is_deleted", "INTEGER NOT NULL DEFAULT 0");
         TryAddColumn(conn, "sessions", "custom_commands", "TEXT");
         TryAddColumn(conn, "chains", "agent_id", "TEXT");
+        TryAddColumn(conn, "chains", "cache_creation_tokens", "INTEGER NOT NULL DEFAULT 0");
+        TryAddColumn(conn, "chains", "cache_read_tokens", "INTEGER NOT NULL DEFAULT 0");
         TryAddColumn(conn, "messages", "attachment_count", "INTEGER NOT NULL DEFAULT 0");
         TryAddColumn(conn, "messages", "attachment_names", "TEXT");
     }
@@ -376,6 +378,8 @@ public class DatabaseService
             UPDATE chains SET
                 input_tokens = @InputTokens,
                 output_tokens = @OutputTokens,
+                cache_creation_tokens = @CacheCreationTokens,
+                cache_read_tokens = @CacheReadTokens,
                 iterations = @Iterations,
                 stop_reason = @StopReason,
                 duration_ms = @DurationMs