v7.1.45-0

Changelog

• 387c783 Merge pull request #3649 from intcua/fix/xai-empty-tools-orphan-tool-choice
• 4eec9ea Merge remote-tracking branch 'upstream/main' into upstream-sync/20260605-0449
• f475684 chore(upstream-sync): record upstream version
• 5753d1a feat(logging): enable file-backed request/response sources for enhanced API logging
• 303685c fix(executor/xai): drop orphaned tool_choice when Claude tools array is empty