fix: skip UNIQUE/FK constraints in DDL parser; restrict prompt log + user mgmt to admins

- parse_ddl was treating UNIQUE/FOREIGN KEY/CHECK/INDEX table constraints as column
definitions, producing a phantom UNIQUE column that caused table creation to fail
- Prompt Log and User Management tabs now default to hidden, revealed by
check_admin_visibility on load (same pattern as Admin Settings tab)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

chat_interface.py

@@ -4395,7 +4395,7 @@ def create_chat_interface():
                     interactive=False
                 )
             
-            with gr.Tab("📝 Prompt Log"):
+            with gr.Tab("📝 Prompt Log", visible=False) as prompt_log_tab:
                 gr.Markdown("### Prompt Log — What We Send to LLMs")
                 gr.Markdown("*Every prompt and response is logged here for review. Updates every 5 seconds.*")
                 prompt_log_display = gr.Markdown(
@@ -4421,7 +4421,7 @@ def create_chat_interface():
                     outputs=[prompt_log_display]
                 )
             
-            with gr.Tab("👤 User Management"):
+            with gr.Tab("👤 User Management", visible=False) as user_mgmt_tab:
                 gr.Markdown("### User Management (Admin Only)")
                 gr.Markdown("*Add, deactivate, or reset passwords for DemoPrep users.*")
                 
@@ -4732,12 +4732,16 @@ def create_chat_interface():
                 gr.update(visible=is_admin),  # admin_ai_accordion
                 gr.update(visible=is_admin),  # admin_db_accordion
                 gr.update(visible=is_admin),  # admin_settings_tab
+                gr.update(visible=is_admin),  # prompt_log_tab
+                gr.update(visible=is_admin),  # user_mgmt_tab
             )
-        
+
         admin_outputs = [
             settings_components['_admin_ai_accordion'],
             settings_components['_admin_db_accordion'],
             admin_settings_tab,
+            prompt_log_tab,
+            user_mgmt_tab,
         ]
         
         interface.load(

thoughtspot_deployer.py

@@ -523,7 +523,7 @@ class ThoughtSpotDeployer:
                     })
                     print(f"   🔗 Found inline FK: {table_name}.{from_col} -> {to_table}.{to_col}")
 
-                if not line_upper.startswith(('PRIMARY KEY', 'CONSTRAINT')):
+                if not line_upper.startswith(('PRIMARY KEY', 'CONSTRAINT', 'FOREIGN KEY', 'UNIQUE', 'CHECK', 'INDEX')):
                     # Parse: COLUMNNAME DATATYPE(params) [IDENTITY] [NOT NULL]
                     parts = line.split()
                     if len(parts) >= 2: