feat(backends,conversations,frontends): opus 5.5 progress updates reach telegram, current claude cli in the image

src/beaver_gateway/agents/claude.py

@@ -24,6 +24,9 @@ class ClaudeOptions(BaseModel):
     model_config = ConfigDict(frozen=True, arbitrary_types_allowed=True)
 
     effort: str | None = None
+    thinking: Mapping[str, str] | None = None
+    """Thinking config for the SDK; ``None`` keeps the CLI default."""
+
     include_partial_messages: bool = True
     """Token-level deltas on the wire; off means one delta per finished block."""