Update state.py

state.py

@@ -163,6 +163,8 @@ def enforceGlobalRenameExclusivity(changed_idx):
 
     Called by the sidebar multiselect on_change so that picking a speaker for
     one name automatically unassigns it from any previously-holding name.
+    We pop (not overwrite) stale widget keys to avoid the Streamlit
+    "cannot modify after instantiation" error.
     """
     changed_tokens = set(st.session_state.globalRenames[changed_idx]["speakers"])
     for idx, entry in enumerate(st.session_state.globalRenames):
@@ -171,7 +173,7 @@ def enforceGlobalRenameExclusivity(changed_idx):
         new_speakers = [t for t in entry["speakers"] if t not in changed_tokens]
         if new_speakers != entry["speakers"]:
             entry["speakers"] = new_speakers
-            st.session_state[_global_rename_key(idx)] = new_speakers
+            st.session_state.pop(_global_rename_key(idx), None)
     applyGlobalRenames()
 
 
@@ -207,12 +209,13 @@ def apply_inline_rename(currFile, raw_sp, new_name):
 
     # Always remove this token from every existing entry first so it can't
     # be claimed by more than one name at the same time.
-    for entry in st.session_state.globalRenames:
+    # We delete the widget key (rather than overwriting it) to avoid the
+    # Streamlit "cannot modify after widget is instantiated" error — the
+    # render loop will reseed it from globalRenames data on the next rerun.
+    for idx, entry in enumerate(st.session_state.globalRenames):
         if token in entry["speakers"]:
             entry["speakers"].remove(token)
-            # Keep the widget key in sync
-            idx = st.session_state.globalRenames.index(entry)
-            st.session_state[_global_rename_key(idx)] = list(entry["speakers"])
+            st.session_state.pop(_global_rename_key(idx), None)
 
     if new_name:
         # Write into speakerRenames immediately
@@ -221,12 +224,12 @@ def apply_inline_rename(currFile, raw_sp, new_name):
         for idx, entry in enumerate(st.session_state.globalRenames):
             if entry["name"] == new_name:
                 entry["speakers"].append(token)
-                st.session_state[_global_rename_key(idx)] = list(entry["speakers"])
+                st.session_state.pop(_global_rename_key(idx), None)
                 return
         # No existing entry — create a new one
         idx = len(st.session_state.globalRenames)
         st.session_state.globalRenames.append({"name": new_name, "speakers": [token]})
-        st.session_state[_global_rename_key(idx)] = [token]
+        # Don't pre-set the widget key here — render loop will seed it
     else:
         # Empty name — clear the rename for this speaker (token already removed above)
         st.session_state.speakerRenames.setdefault(currFile, {}).pop(raw_sp, None)