feat(anthropic): support Claude Fable 5 adaptive thinking (#91882)

* feat(anthropic): support Claude Fable 5

* test(anthropic): tighten Fable stream fixtures

* fix(anthropic): preserve Vertex input types

* test(anthropic): use provider-ready Vertex effort

* fix(anthropic): support Fable deployment aliases

* fix(anthropic): discard incomplete Fable output

* feat(anthropic): support Fable on Bedrock

* fix(anthropic): preserve Fable reasoning contracts

* refactor(anthropic): unify canonical Claude model policy

* fix(anthropic): satisfy extension thinking types

* test(anthropic): complete canonical alias fixture

* fix(bedrock): scope thinking case declarations

docs/plugins/reference/anthropic-vertex.md

@@ -17,3 +17,9 @@ OpenClaw Anthropic Vertex provider plugin for Claude models on Google Vertex AI.
 ## Surface
 
 providers: anthropic-vertex
+
+## Claude Fable 5
+
+Use `anthropic-vertex/claude-fable-5` where the model is available in your Google Cloud region.
+Fable 5 always uses adaptive thinking and defaults to `high` effort. `/think off` and
+`/think minimal` use `low` effort because the model does not support disabling thinking.

docs/plugins/reference/microsoft-foundry.md

@@ -50,7 +50,10 @@ chat APIs:
 Anthropic Claude deployments in Microsoft Foundry use the Anthropic Messages
 API shape, not the OpenAI-compatible `/openai/v1` shape. Configure those as a
 custom `anthropic-messages` provider until the Microsoft Foundry plugin grows a
-native Anthropic runtime.
+native Anthropic runtime. When the Foundry deployment name differs from the
+Claude model ID, set `params.canonicalModelId` on the model entry so OpenClaw
+can apply model-specific wire contracts, map `/think off` correctly, and
+preserve signed thinking safely.
 
 ## MAI image generation