Why: the open preview-sniff PRs were cut before the shell redesign, so they could not merge. UI and Frontend now contain origin/main plus the ZIP sniff, including xlsx and pptx text fallback. Evidence: UI vitest 68 and tsc clean; Frontend vitest 40 and tsc clean. UI pulls/21 and Frontend pulls/22 updated. Impact: gitlinks only. Dev still needs to merge origin/main before the parent PR can land. Refs: task feature/preview-sniff-fallback Co-authored-by: Cursor <cursoragent@cursor.com>
ui
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