diff --git a/.ae_brief b/.ae_brief
index 0feecc0..9ff7180 100644
--- a/.ae_brief
+++ b/.ae_brief
@@ -1,23 +1,15 @@
 # Aether Project Brief: aether_api_fastapi
-**Last Updated:** 2026-02-06 18:14:30
+**Last Updated:** 2026-02-09 19:09:01
 **Current Agent:** mcp_agent
 
 ## 🛠️ What I Just Did
-1. Fixed nested CRUD router 404s by implementing registry-based table name resolution for aliases.
-2. Standardized demo-critical models (Badge, Exhibit, Tracking, Event File) to the ID Vision standard.
-3. Implemented 'Heal-on-Read' fallback logic in root_validators to resolve missing string IDs from database integers automatically.
-4. Implemented specialized 'from_hosted_file' action route for Event Files.
-5. Updated Frontend API Guide with Alias support and new action routes.
-6. Created E2E Demo Parity test suite with 100% pass rate and regression targets.
-7. Fixed Field parameter conflicts and NameErrors in Pydantic models.
+Hardened Data Store search security (account isolation), ensured ID Vision compliance in Data Store search results, refactored and standardized the Data Store E2E test suite, and updated tests/README.md with suite-wide standards.
 
 ## 🚧 Current Blockers
-None. Backend is stabilized for the Tuesday demo.
+None. V3.1 roadmap is clear.
 
 ## ➡️ Exact Next Steps
-1. Finalize Audit of remaining ~60 models for ID Vision compliance.
-2. Audit full file action lifecycle (Upload/Link/Download/Delete) for potential regressions.
-3. Refactor monolithic person_methods.py and api_crud_v2.py.
+Begin [V3.1] ID Vision alignment for Person and Organization modules. Mark legacy V2 routers as [DEPRECATED] to streamline removal for the v3.1 release.
 
 ---
 *Generated by ae_brief*
diff --git a/app/lib_redis_helpers.py b/app/lib_redis_helpers.py
index 0ca2c9b..ed6eb64 100644
--- a/app/lib_redis_helpers.py
+++ b/app/lib_redis_helpers.py
@@ -112,13 +112,27 @@ def get_id_random(
     """
     Looks up the 'id_random' for a given internal integer ID.
     """
-    from app.db_sql import sql_select
+    from app.db_sql import sql_select, get_last_sql_error
     log.setLevel(log_lvl)
 
+    # Hardened check: Skip lookups for tables known to not have random IDs (e.g. lu_ tables)
+    if not table_name or table_name.startswith('lu_') or table_name.startswith('v_lu_'):
+        return None
+
     data = { 'id': record_id }
     sql = f"SELECT id_random FROM `{table_name}` AS `table` WHERE `table`.id = :id;"
 
-    if select_results := sql_select(sql=sql, data=data):
+    select_results = sql_select(sql=sql, data=data)
+
+    # Check for "Unknown column 'id_random'" error if sql_select failed
+    if select_results is False:
+        err = str(get_last_sql_error())
+        if "1054" in err and "id_random" in err:
+            log.info(f"Table '{table_name}' does not have an 'id_random' column. Skipping.")
+            return None
+        return False
+
+    if select_results:
         if isinstance(select_results, dict):
             if record_id_random := select_results.get('id_random'):
                 return str(record_id_random)
diff --git a/app/models/event_file_models.py b/app/models/event_file_models.py
index 0c7c10a..9871f9a 100644
--- a/app/models/event_file_models.py
+++ b/app/models/event_file_models.py
@@ -68,7 +68,6 @@ class Event_File_Base(BaseModel):
             ('event_presenter_id', 'event_presenter'),
             ('event_session_id', 'event_session'),
             ('event_track_id', 'event_track'),
-            ('lu_file_purpose_id', 'lu_file_purpose'),
         ]
         
         # 2a. Handle specific relational fields