feat: update to June 2026 models (Claude Sonnet 4.6, Gemini 3.5 Flash), add glossary button, and implement cost factor quota & vision fallback

data/provider_settings.json

@@ -43,7 +43,7 @@
     "enabled": true,
     "api_key": null,
     "base_url": null,
-    "model": "deepseek/deepseek-v3.2",
+    "model": "google/gemini-3.5-flash",
     "timeout": 30,
     "max_retries": 3
   },
@@ -51,7 +51,7 @@
     "enabled": false,
     "api_key": null,
     "base_url": null,
-    "model": "anthropic/claude-3.5-haiku",
+    "model": "anthropic/claude-sonnet-4.6",
     "timeout": 30,
     "max_retries": 3
   },