TIER-2 READ conductor/code_styleguides/error_handling.md end-to-end before Phase 8: refactor(gui_2): migrate L897 _capture_workspace_profile to Result[T] (Phase 8)

Migrate the imgui.save_ini_settings_to_memory try/except in
App._capture_workspace_profile (L897) to the canonical Result[T] pattern:

- Extract _capture_workspace_profile_ini_result(app) -> Result[str]
  helper into Phase 8 Property Setter / State Result Helpers region.
- The legacy _capture_workspace_profile method calls the helper and
  drains errors to app._last_request_errors (per FR-BC-4 event-handler
  drain pattern; this is a property setter on the App).
- The original fallback behavior (ini = '' on failure) is preserved
  so the legacy WorkspaceProfile still constructs with empty ini_content.

Tests:
- test_phase_8_l897_capture_workspace_profile_ini_result_success
- test_phase_8_l897_capture_workspace_profile_ini_result_failure

Audit: INTERNAL_BROAD_CATCH count in src/gui_2.py is now 0. All 22
INTERNAL_BROAD_CATCH sites originally in src/gui_2.py have been
migrated to Result[T] across Phases 3-8.

src/gui_2.py

@@ -891,9 +891,13 @@ class App:
    self._ini_capture_ready = True
    ini = ""
   else:
-   #Note(Ed): Thirdparty Exception
-   try:              ini = str(imgui.save_ini_settings_to_memory() or "")
-   except Exception: ini = ""
+   ini_result = _capture_workspace_profile_ini_result(self)
+   if ini_result.ok:
+    ini = ini_result.data
+   else:
+    if not hasattr(self, "_last_request_errors"): self._last_request_errors = []
+    self._last_request_errors.append(("_capture_workspace_profile", ini_result.errors[0]))
+    ini = ""
   panel_states = {
    "ui_separate_context_preview":  getattr(self, "ui_separate_context_preview",  False),
    "ui_separate_message_panel":    getattr(self, "ui_separate_message_panel",    False),
@@ -8128,6 +8132,30 @@ def _diag_layout_state_ini_text_result(app: "App", ini_path: str) -> Result[str]
    original=e,
   )])
 
+def _capture_workspace_profile_ini_result(app: "App") -> Result[str]:
+ """Drain-aware variant of L897 _capture_workspace_profile ini-capture try block.
+
+ Extracts the thirdparty imgui.save_ini_settings_to_memory try/except
+ from App._capture_workspace_profile into a Result-returning helper.
+ On exception, returns Result(data="", errors=[ErrorInfo]) so the legacy
+ wrapper can fall back to the empty-string ini content. On success,
+ returns Result(data=ini_str) where ini_str is the serialized INI content.
+ The legacy wrapper drains errors to app._last_request_errors (per FR-BC-4
+ event-handler drain pattern; this site is a property setter on the App).
+
+ [C: src/gui_2.py:App._capture_workspace_profile (L897 legacy wrapper)]
+ """
+ try:
+  ini = str(imgui.save_ini_settings_to_memory() or "")
+  return Result(data=ini)
+ except Exception as e:
+  return Result(data="", errors=[ErrorInfo(
+   kind=ErrorKind.INTERNAL,
+   message=f"imgui.save_ini_settings_to_memory failed: {e}",
+   source="gui_2._capture_workspace_profile_ini_result",
+   original=e,
+  )])
+
 #endregion: Phase 8 Property Setter / State Result Helpers
 
 #endregion: MMA