feat: simplify Data Size to Small (1k) and Medium (10k)

Dropped Standard and Large. Small=1k fact/100 dim, Medium=10k fact/500 dim.

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

chat_interface.py

@@ -5119,8 +5119,8 @@ def create_chat_interface():
                 use_case = str(settings.get("default_use_case", "")).strip()
                 model = (str(settings.get("default_llm", "")).strip() or DEFAULT_LLM_MODEL)
                 liveboard_name = str(settings.get("liveboard_name", "")).strip()
-                _ft_to_size = {"100": "Small", "1000": "Medium", "5000": "Standard", "10000": "Large"}
-                saved_size = _ft_to_size.get(str(settings.get("fact_table_size", "5000")), "Standard")
+                _ft_to_size = {"1000": "Small", "10000": "Medium"}
+                saved_size = _ft_to_size.get(str(settings.get("fact_table_size", "1000")), "Small")
                 saved_geo = str(settings.get("geo_scope", "USA Only")).strip() or "USA Only"
                 saved_tag = str(settings.get("tag_name", "")).strip()
                 saved_col_naming = str(settings.get("column_naming_style", "Regular Case")).strip() or "Regular Case"
@@ -5307,16 +5307,16 @@ def create_chat_tab(chat_controller_state, settings, current_stage, current_mode
                 )
 
                 # Map saved fact_table_size → Data Size label
-                _ft_to_size = {"100": "Small", "1000": "Medium", "5000": "Standard", "10000": "Large"}
-                _saved_ft = str(settings.get('fact_table_size', '5000'))
-                _init_data_size = _ft_to_size.get(_saved_ft, "Standard")
+                _ft_to_size = {"1000": "Small", "10000": "Medium"}
+                _saved_ft = str(settings.get('fact_table_size', '1000'))
+                _init_data_size = _ft_to_size.get(_saved_ft, "Small")
 
                 data_size_dropdown = gr.Dropdown(
                     label="Data Size",
-                    choices=["Small", "Medium", "Standard", "Large"],
+                    choices=["Small", "Medium"],
                     value=_init_data_size,
                     interactive=True,
-                    info="Small 100 rows · Medium 1k · Standard 5k · Large 10k",
+                    info="Small 1k rows · Medium 10k rows",
                 )
                 geo_scope_dropdown = gr.Dropdown(
                     label="Geographic Scope",
@@ -5523,12 +5523,10 @@ def create_chat_tab(chat_controller_state, settings, current_stage, current_mode
                 controller.settings['model'] = model
             if data_size:
                 _size_map = {
-                    "Small":    ("100",   "20"),
-                    "Medium":   ("1000",  "100"),
-                    "Standard": ("5000",  "200"),
-                    "Large":    ("10000", "500"),
+                    "Small":  ("1000",  "100"),
+                    "Medium": ("10000", "500"),
                 }
-                _ft, _dt = _size_map.get(data_size, ("5000", "200"))
+                _ft, _dt = _size_map.get(data_size, ("1000", "100"))
                 controller.settings['fact_table_size'] = _ft
                 controller.settings['dim_table_size'] = _dt
             if geo_scope: