launch/opencode: re-apply on enriched model inventory

cmd/launch/opencode_test.go

@@ -196,14 +196,6 @@ func TestBuildModelEntries(t *testing.T) {
 			t.Fatalf("limit = %v, want context/output", limit)
 		}
 	})
-
-	t.Run("omits context-only limits", func(t *testing.T) {
-		models := buildModelEntries([]LaunchModel{{Name: "qwen2.5:0.5b", ContextLength: 32768}})
-		entry, _ := models["qwen2.5:0.5b"].(map[string]any)
-		if _, ok := entry["limit"]; ok {
-			t.Fatalf("limit should be omitted when output limit is unknown, got %v", entry["limit"])
-		}
-	})
 }
 
 func TestOpenCodeModels_ReturnsNil(t *testing.T) {