docs: update default model from Claude Opus 4.5 to Claude Opus 4.6

Updates the recommended model documentation to reflect the new default
model for Continue's platform.

Generated with [Continue](https://continue.dev)

Co-Authored-By: Continue <noreply@continue.dev>
Co-authored-by: bekah-hawrot-weigel <bekah@continue.dev>

Author: 3 people

docs/customize/model-roles/chat.mdx

@@ -19,13 +19,13 @@ In Continue, these models are used for normal [Chat](../../ide-extensions/chat/q
 
 For the best overall Chat experience, you will want to use a 400B+ parameter model or one of the frontier models.
 
-### Claude Opus 4.5 and Claude Sonnet 4 from Anthropic
+### Claude Opus 4.6 and Claude Sonnet 4 from Anthropic
 
-Our current top recommendations are Claude Opus 4.5 and Claude Sonnet 4 from [Anthropic](../model-providers/top-level/anthropic).
+Our current top recommendations are Claude Opus 4.6 and Claude Sonnet 4 from [Anthropic](../model-providers/top-level/anthropic).
 
 <Tabs>
   <Tab title="Hub">
-  View the [Claude Opus 4.5 model block](https://continue.dev/anthropic/claude-4-5-opus) or [Claude Sonnet 4 model block](https://continue.dev/anthropic/claude-4-sonnet) on the hub.
+  View the [Claude Opus 4.6 model block](https://continue.dev/anthropic/claude-opus-4-6) or [Claude Sonnet 4 model block](https://continue.dev/anthropic/claude-4-sonnet) on the hub.
   </Tab>
   <Tab title="YAML">
   ```yaml title="config.yaml"
@@ -34,9 +34,9 @@ Our current top recommendations are Claude Opus 4.5 and Claude Sonnet 4 from [An
   schema: v1
 
   models:
-    - name: Claude Opus 4.5
+    - name: Claude Opus 4.6
       provider: anthropic
-      model: claude-opus-4-5
+      model: claude-opus-4-6
       apiKey: <YOUR_ANTHROPIC_API_KEY>
   ```
   </Tab>