feat(gui): Display active Gemini caches

This change adds a label to the Provider panel to show the count and total size of active Gemini caches when the Gemini provider is selected. This information is hidden for other providers.

gui.py

@@ -771,6 +771,7 @@ class App:
 
     def _update_telemetry_panel(self):
         """Updates the token budget visualizer in the Provider panel."""
+        # Update history bleed stats for all providers
         stats = ai_client.get_history_bleed_stats()
         if dpg.does_item_exist("token_budget_bar"):
             percentage = stats.get("percentage", 0.0)
@@ -780,6 +781,23 @@ class App:
             limit = stats.get("limit", 0)
             dpg.set_value("token_budget_label", f"{current:,} / {limit:,}")
 
+        # Update Gemini-specific cache stats
+        if dpg.does_item_exist("gemini_cache_label"):
+            if self.current_provider == "gemini":
+                try:
+                    cache_stats = ai_client.get_gemini_cache_stats()
+                    count = cache_stats.get("cache_count", 0)
+                    size_bytes = cache_stats.get("total_size_bytes", 0)
+                    size_kb = size_bytes / 1024.0
+                    text = f"Gemini Caches: {count} ({size_kb:.1f} KB)"
+                    dpg.set_value("gemini_cache_label", text)
+                    dpg.configure_item("gemini_cache_label", show=True)
+                except Exception as e:
+                    # If the API call fails, just hide the label
+                    dpg.configure_item("gemini_cache_label", show=False)
+            else:
+                dpg.configure_item("gemini_cache_label", show=False)
+
     def _append_comms_entry(self, entry: dict, idx: int):
         if not dpg.does_item_exist("comms_scroll"):
             return
@@ -1885,6 +1903,7 @@ class App:
             dpg.add_text("History Token Budget:", color=_LABEL_COLOR)
             dpg.add_progress_bar(tag="token_budget_bar", default_value=0.0, width=-1)
             dpg.add_text("0 / 0", tag="token_budget_label")
+            dpg.add_text("", tag="gemini_cache_label", show=False)
             dpg.add_separator()
             dpg.add_text("Parameters")
             dpg.add_input_float(tag="ai_temperature", label="Temperature", default_value=self.temperature, min_value=0.0, max_value=2.0)

tests/test_gui_updates.py

@@ -44,7 +44,10 @@ def test_telemetry_panel_updates_correctly(app_instance):
     Tests that the _update_telemetry_panel method correctly updates
     DPG widgets based on the stats from ai_client.
     """
-    # 1. Define the mock stats to be returned by ai_client
+    # 1. Set the provider to anthropic
+    app_instance.current_provider = "anthropic"
+
+    # 2. Define the mock stats
     mock_stats = {
         "provider": "anthropic",
         "limit": 180000,
@@ -52,22 +55,57 @@ def test_telemetry_panel_updates_correctly(app_instance):
         "percentage": 75.0,
     }
 
-    # 2. Patch the dependencies
+    # 3. Patch the dependencies
     with patch('ai_client.get_history_bleed_stats', return_value=mock_stats) as mock_get_stats, \
          patch('dearpygui.dearpygui.set_value') as mock_set_value, \
+         patch('dearpygui.dearpygui.configure_item') as mock_configure_item, \
          patch('dearpygui.dearpygui.does_item_exist', return_value=True) as mock_does_item_exist:
 
-        # 3. Call the method under test
+        # 4. Call the method under test
         app_instance._update_telemetry_panel()
 
-        # 4. Assert the results
+        # 5. Assert the results
         mock_get_stats.assert_called_once()
         
-        # Check that the code verified the existence of the widgets
-        mock_does_item_exist.assert_any_call("token_budget_bar")
-        mock_does_item_exist.assert_any_call("token_budget_label")
-
-        # Check that the widgets were updated with the correct values
+        # Assert history bleed widgets were updated
         mock_set_value.assert_any_call("token_budget_bar", 0.75)
-        # Note: My implementation formats numbers with commas
         mock_set_value.assert_any_call("token_budget_label", "135,000 / 180,000")
+
+        # Assert Gemini-specific widget was hidden
+        mock_configure_item.assert_any_call("gemini_cache_label", show=False)
+
+def test_cache_data_display_updates_correctly(app_instance):
+    """
+    Tests that the _update_telemetry_panel method correctly updates the
+    GUI with Gemini cache statistics when the provider is set to Gemini.
+    """
+    # 1. Set the provider to Gemini
+    app_instance.current_provider = "gemini"
+
+    # 2. Define mock cache stats
+    mock_cache_stats = {
+        'cache_count': 5,
+        'total_size_bytes': 12345
+    }
+    # Expected formatted string
+    expected_text = "Gemini Caches: 5 (12.1 KB)"
+
+    # 3. Patch dependencies
+    with patch('ai_client.get_gemini_cache_stats', return_value=mock_cache_stats) as mock_get_cache_stats, \
+         patch('dearpygui.dearpygui.set_value') as mock_set_value, \
+         patch('dearpygui.dearpygui.configure_item') as mock_configure_item, \
+         patch('dearpygui.dearpygui.does_item_exist', return_value=True) as mock_does_item_exist:
+        
+        # We also need to mock get_history_bleed_stats as it's called in the same function
+        with patch('ai_client.get_history_bleed_stats', return_value={}):
+            
+            # 4. Call the method under test
+            app_instance._update_telemetry_panel()
+
+            # 5. Assert the results
+            mock_get_cache_stats.assert_called_once()
+            
+            # Check that the UI item was shown and its value was set
+            mock_configure_item.assert_any_call("gemini_cache_label", show=True)
+            mock_set_value.assert_any_call("gemini_cache_label", expected_text)
+