fix: resolve DuplicateIdError by including search_term in drug-fragment badge IDs (Task 7.1)

Badge IDs changed from f"{directorate}|{frag}" to f"{directorate}|{search_term}|{frag}"
to handle fragments appearing under multiple indications within the same directorate.
Callback parsing updated to use rsplit("|", 1)[-1] for the 3-part key.

dash_app/callbacks/drawer.py

@@ -44,8 +44,8 @@ def register_drawer_callbacks(app):
             if not any(n for n in (fragment_clicks or []) if n):
                 return no_update, no_update
 
-            fragment_key = triggered["index"]  # e.g. "CARDIOLOGY|ABCIXIMAB"
-            fragment = fragment_key.split("|", 1)[-1] if "|" in fragment_key else fragment_key
+            fragment_key = triggered["index"]  # e.g. "CARDIOLOGY|acute coronary syndrome|RIVAROXABAN"
+            fragment = fragment_key.rsplit("|", 1)[-1] if "|" in fragment_key else fragment_key
 
             # Get all available drugs from reference data
             all_drugs = (ref_data or {}).get("available_drugs", [])

dash_app/components/drawer.py

@@ -63,7 +63,7 @@ def _make_directorate_card(directorate: str, indications: dict[str, list[str]])
                             children=[
                                 dmc.Badge(
                                     frag,
-                                    id={"type": "drug-fragment", "index": f"{directorate}|{frag}"},
+                                    id={"type": "drug-fragment", "index": f"{directorate}|{search_term}|{frag}"},
                                     variant="light",
                                     size="sm",
                                     className="drawer-drug-badge",