feat: add Claude Opus 4.6 to built-in model catalog (#9853)

* feat: add Claude Opus 4.6 to built-in model catalog

- Update default model from claude-opus-4-5 to claude-opus-4-6
- Add opus-4.6 model ID normalization
- Add claude-opus-4-6 to live model filter prefixes
- Update image tool to prefer claude-opus-4-6 for vision
- Add CLI backend alias for opus-4.6
- Update onboard auth default selections to include opus-4.6
- Update model picker placeholder

Closes #9811

* test: update tests for claude-opus-4-6 default

- Fix model-alias-defaults test to use claude-opus-4-6
- Fix image-tool test to expect claude-opus-4-6 in fallbacks

* feat: support claude-opus-4-6

* docs: update changelog for opus 4.6 (#9853) (thanks @TinyTb)

* chore: bump pi to 0.52.0

---------

Co-authored-by: Slurpy <slurpy@openclaw.ai>
Co-authored-by: Peter Steinberger <steipete@gmail.com>

src/media-understanding/runner.ts

@@ -53,7 +53,7 @@ const AUTO_IMAGE_KEY_PROVIDERS = ["openai", "anthropic", "google", "minimax"] as
 const AUTO_VIDEO_KEY_PROVIDERS = ["google"] as const;
 const DEFAULT_IMAGE_MODELS: Record<string, string> = {
   openai: "gpt-5-mini",
-  anthropic: "claude-opus-4-5",
+  anthropic: "claude-opus-4-6",
   google: "gemini-3-flash-preview",
   minimax: "MiniMax-VL-01",
 };