Bug 2 of #28156: the picker offered us./global. inference profiles to
EU-region endpoints (unroutable — AWS rejects them regardless of
credentials) and _RECOMMENDED hardcoded us.anthropic.* ids, so non-US
pickers pinned profiles their endpoint can't invoke.
- bedrock_model_routable_from_region(): geo-prefixed profiles are only
offered in their own geography (full AWS prefix set incl. apac./jp./
ca./sa./me./af.); bare ids and global.* pass everywhere; unknown
region shapes hide nothing.
- Recommendations match geo-agnostically on the base model id, so an EU
picker pins eu.anthropic.claude-sonnet-4-6; in-region geo profiles
sort above global.* for the same model (addresses the global.*-first
ordering complaint from the issue thread).
- Dedup generalized from (us., global.) to all profile prefixes.
3b15afafa2