Reverts PR #16919 (commits dad10a78d, 413ee1a28, b4a8031b2, afb958829) which was merged prematurely. Restoring the pre-merge state so #14817 and #15328 can be revisited as standing PRs. Reverted commits: - afb958829 fix(computer-use): harden image-rejection fallback + AUTHOR_MAP - b4a8031b2 fix(computer-use): unwrap _multimodal tool results - 413ee1a28 feat(computer-use): background focus-safe backend - dad10a78d feat(computer-use): cua-driver backend, universal any-model schema Co-authored-by: teknium1 <teknium@users.noreply.github.com>
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