Review: reject revisions after Compare, one or all

review.reject {index | all} drops revisions from the list without applying
them, so the open deck stays as it is: a rejected inserted slide is never
added, a rejected deleted slide stays, a rejected changed slide keeps its
current content. Accept All skips what was rejected. Rejections are kept on
the compare session (keyed by the open slide id and the revised slide) and
end with End Review; like Compare and End Review, rejecting is not an undo
step, since it leaves the document untouched.

Revisions pane: Reject next to each Accept, and Reject All.

docs/gaps.md

@@ -273,7 +273,7 @@ Zoom: live thumbnails, the zoom-in animation and the native `p166:sldZm` element
 artistic effects (3–6 h for the other 15 of 22; 7 approximated and round-tripped), remove
 background (6–10 h; needs a model or a classical matte), insert screenshot (2–3 h), record
 audio/screen and record slide show (8–12 h), compare presentations beyond slide-level accept
-(reject, per-object accept, markers on the slide: 3–5 h), password protection (4–6 h, ECMA-376
+and reject (per-object accept and reject, markers on the slide: 2–4 h), password protection (4–6 h, ECMA-376
 agile encryption), ink to text and math beyond Ink to Shape (6–10 h), 3-D models and stock content
 (6–10 h; Insert › Icons places a Lucide stroke set).
 
@@ -355,6 +355,7 @@ Detail in [localization-parity.md](localization-parity.md).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-15 | trivial | Compare: slide-level Reject and Reject All landed; the entry keeps per-object accept and reject and the slide markers |
 | 2026-10-14 | trivial | Fixed #718: remote MCP no longer accepts unrelated or buffered stale success; loopback regressions cover invalid envelopes, incomplete and oversized frames |
 | 2026-10-14 | minor | Community PR wave folded: one entry each for the soak tests (engine and UI), the PPTX corpus (seven owned corpus files), edit points / text warp / 3-D, proofing (Hunspell spelling, thesaurus, AutoCorrect), the smaller missing rows, dialogs (41 vs ~60; Print and Insert Object left) and pen/trackpad input; ranked rows 3, 4 and 10 de-duplicated (comment threads #70 and the pane timeline are done); the fixed command-palette entry (#79) removed |
 | 2026-10-13 | minor | EMF/WMF rectangle clip regions (`INTERSECTCLIPRECT`, `EXCLUDECLIPRECT`, `EXTSELECTCLIPRGN`) limit later drawing. EMF+ records remain |