Upstream v1.4.5 moves the effort level into parentheses after the
model name.
Also read the CLI version from the `version` field Claude Code passes
on stdin instead of caching `claude --version` for an hour, which kept
showing the old version after an upgrade. `claude --version` remains
as an uncached fallback.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>