Code review caught that the bare alias 'claude-haiku-4-5' works in the
Claude Code CLI but may not resolve in the Anthropic SDK. Pin the
default to 'claude-haiku-4-5-20251001' (the full dated ID) via a
DEFAULT_MODEL constant so the SDK path doesn't silently break the
first time it hits the real API.
Also document the max_tokens-ignored behavior on the CLI path in the
public call_claude docstring (not just the private _call_via_cli),
and drop the unused LLMCaller type alias (dead code).
3/3 tests still pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>