fix: derive LLM provider from adapter, not config

Remove redundant models.provider from team.yaml. Each adapter knows its
own provider key — AnthropicAdapter always looks up 'anthropic' in the
capability_map. This avoids a footgun where adapters.llm and models.provider
could disagree.

Future adapters (OpenAIAdapter, OllamaAdapter) will hardcode their own key
the same way.

adapters/llm/anthropic.py

@@ -22,7 +22,6 @@ class AnthropicAdapter(LLMAdapter):
     Reads model configuration from the loaded team.yaml config dict::
 
         models:
-          provider: anthropic
           default_max_tokens: 4096   # fallback max_tokens for all calls
           default_temperature: 0     # fallback temperature for all calls
           capability_map:
@@ -33,6 +32,10 @@ class AnthropicAdapter(LLMAdapter):
             fast-cheap:
               anthropic: claude-haiku-3-5
 
+    The provider key used when looking up ``capability_map`` is hardcoded to
+    ``"anthropic"`` — the adapter knows its own provider; there is no need for
+    a separate ``models.provider`` config field.
+
     Both ``default_max_tokens`` and ``default_temperature`` can be overridden
     per-call via the ``context`` dict passed to :meth:`complete`.
 
@@ -116,15 +119,15 @@ class AnthropicAdapter(LLMAdapter):
         -------
         Anthropic model identifier (e.g. "claude-opus-4-6").
         """
-        provider: str = self._models_cfg.get("provider", "anthropic")
+        # The adapter knows its own provider — no need to read it from config.
         cap_map: dict = self._models_cfg.get("capability_map", {})
 
-        if capability in cap_map and provider in cap_map[capability]:
-            return cap_map[capability][provider]
+        if capability in cap_map and "anthropic" in cap_map[capability]:
+            return cap_map[capability]["anthropic"]
 
         # Fall back to "capable" tier
-        if "capable" in cap_map and provider in cap_map["capable"]:
-            return cap_map["capable"][provider]
+        if "capable" in cap_map and "anthropic" in cap_map["capable"]:
+            return cap_map["capable"]["anthropic"]
 
         # Hard-coded last resort
         return "claude-sonnet-4-6"

config/team.yaml

@@ -10,7 +10,6 @@ adapters:
   runtime: openclaw
 
 models:
-  provider: anthropic
   default_max_tokens: 4096
   default_temperature: 0
   capability_map: