feat: Introduce Hashline encoding/validation, implement core REPL and chat session logic, and establish initial project structure with a license and editor configuration.

OpenRouter/TokenTracker.cs

@@ -35,6 +35,8 @@ internal sealed class TokenTracker
         RequestCount++;
     }
 
+    private const int MaxContextReserve = 150_000;
+
     /// <summary>
     /// Returns true if the context is getting too large and should be compacted.
     /// Triggers at min(75% of model context, 150K tokens).
@@ -44,8 +46,8 @@ internal sealed class TokenTracker
         if (LastInputTokens <= 0) return false;
 
         int threshold = ContextLength > 0
-            ? Math.Min((int)(ContextLength * 0.75), 150_000)
-            : 150_000;
+            ? Math.Min((int)(ContextLength * 0.75), MaxContextReserve)
+            : MaxContextReserve;
 
         return LastInputTokens >= threshold;
     }