Laufzeiten: ein Lauf ohne haltbaren Vorschlag behaelt seinen Verbrauch (#712)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/ClawdDotNet.Core/Runtimes/ForeignRunner.cs

@@ -128,9 +128,18 @@ public sealed class ForeignRunner
             var result = await _sandbox.RunAsync(sandboxRequest, ct);
             var outcome = runtime.Interpret(result, context, note);
 
+            // The run happened and was paid for — a proposal that cannot be kept must not
+            // turn it into "not run" and lose its usage.
+            try
+            {
                 return outcome with { Text = WithProposal(outcome.Text, agent, request, runtime.Kind, work) };
             }
             catch (ForeignRunException ex)
+            {
+                return outcome with { Text = (outcome.Text ?? "").TrimEnd() + $"\n\n[No proposal kept: {ex.Message}]" };
+            }
+        }
+        catch (ForeignRunException ex)
         {
             return new ForeignRunOutcome { Status = AgentRunStatus.Failed, Text = $"[Not run: {ex.Message}]" };
         }