From d6f77379d9195dd43d9319c025e964f58d245406 Mon Sep 17 00:00:00 2001
From: JavaZeroo <71128095+JavaZeroo@users.noreply.github.com>
Date: Sat, 31 Oct 2026 17:38:45 +0800
Subject: [PATCH] diag(shell): name the workspace scenario when it fails refs
 #73

Workspace scenarios failed with only the caller text, so the window procedure now prints the scenario mode and the error before tearing down.
---
 experiments/shell/workspace.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/experiments/shell/workspace.hpp b/experiments/shell/workspace.hpp
index 4ae1310d..c5c439b2 100644
--- a/experiments/shell/workspace.hpp
+++ b/experiments/shell/workspace.hpp
@@ -643,7 +643,13 @@ class Workspace {
                 try { self->paint(dc); } catch(...) { EndPaint(hwnd,&ps); throw; }
                 EndPaint(hwnd,&ps); return 0;
             }
-        } catch(const std::exception& error) { self->failure_=error.what(); self->discard_and_close(); }
+        } catch(const std::exception& error) {
+            self->failure_=error.what();
+            // Workspace scenarios (selection, actions, shells) fail outside the
+            // per-tab dump, so report the scenario identity and the message here.
+            std::cerr << "workspace-failure mode=" << self->test_mode_ << " what=" << self->failure_ << '\n';
+            self->discard_and_close();
+        }
         return DefWindowProcW(hwnd,message,wp,lp);
     }
 public: