fix: add explicit dashboard workbook intake and set-active-workbook flow

app.py

@@ -2724,6 +2724,21 @@ def load_uploaded(uploaded_file):
     return load_workbook(persisted, f"Workbook uploaded and saved to {persisted}.")
 
 
+def set_active_workbook(uploaded_file):
+    """
+    Explicit workbook intake handler for dashboard use.
+    Uses a visible file picker + button flow to avoid upload-event ambiguity.
+    """
+    if uploaded_file is None:
+        raise gr.Error("Select a workbook (.xlsx or .xlsm) first.")
+    persisted = _persist_uploaded_workbook(uploaded_file)
+    return (
+        str(persisted),
+        str(persisted),
+        *load_workbook(persisted, f"Active workbook set: {persisted.name}"),
+    )
+
+
 def load_local_path(path_text: str):
     path = _validate_workbook_path(Path(path_text or "").expanduser())
     log_df = score_log(path)
@@ -2847,6 +2862,20 @@ with gr.Blocks(title="TOTEM Studio") as demo:
                     )
                     run_button = gr.Button("Run TOTEM Analysis", variant="secondary", scale=1)
 
+            with gr.Accordion("Workbook Intake (required for scoring)", open=True, elem_id="path-panel"):
+                with gr.Column(elem_classes=["wrap"]):
+                    dashboard_workbook_file = gr.File(
+                        label="Workbook (.xlsx or .xlsm)",
+                        file_types=[".xlsx", ".xlsm"],
+                        type="filepath",
+                    )
+                    dashboard_set_workbook = gr.Button("Set Active Workbook", variant="primary")
+                    workbook_home_display = gr.Textbox(
+                        label="Active workbook home path",
+                        value=str(_preferred_workbook_path()),
+                        interactive=False,
+                    )
+
             with gr.Accordion("Manuscript Intake (score pipeline)", open=False, elem_id="codex-panel"):
                 with gr.Column(elem_classes=["codex-body"]):
                     gr.Markdown(
@@ -3032,6 +3061,11 @@ with gr.Blocks(title="TOTEM Studio") as demo:
     # demo.load removed: user triggers load via Run TOTEM Analysis button
     workbook_upload.upload(load_uploaded, inputs=[workbook_upload],
                            outputs=[active_path, dashboard, log_state, score_status])
+    dashboard_set_workbook.click(
+        set_active_workbook,
+        inputs=[dashboard_workbook_file],
+        outputs=[workbook_home_display, path_input, active_path, dashboard, log_state, score_status],
+    )
     run_button.click(run_analysis, inputs=[active_path],
                      outputs=[dashboard, log_state, score_status])
     path_button.click(load_local_path, inputs=[path_input],