fix(docx): report LibreOffice timeout as an error and verify the output - #1792

Reviewed at head ad42dbab (base 34040c9). LibreOffice is not installed here either, so I re-ran the mocked-subprocess.run two-state checks with locally generated DOCX fixtures:

• ✅ Timeout no longer reports success: with subprocess.run patched to raise TimeoutExpired, base returns "Successfully accepted all tracked changes …" (and since __main__ keys on "Error" in message, it also exits 0 — defect 1 of docx/pdf/xlsx: six defects in the document skills (verified at 34040c9) #1770), while head returns "Error: LibreOffice timed out while accepting tracked changes…".
• ✅ Postcondition catches the intended case: a stub that converts nothing leaves the output carrying <w:ins>; head reports "Error: tracked changes remain in output document", base still claims success.
• ✅ A genuinely clean output still reports success. python -m py_compile clean; the diff is single-purpose (+24/−1, zipfile reads only — no new network/subprocess surface).

One fix needed — the marker match is prefix-based and flags clean documents. "<w:ins" is a substring of <w:insideH, <w:insideV and <w:instrText, so any converted document that contains table inside borders or field codes (TOC / PAGE) is reported as still carrying revision marks:

word/document.xml: …<w:tblBorders><w:insideH w:val="single" w:sz="4"/>…</w:tblBorders>   (no revisions)
_docx_still_has_tracked_changes(...)   → True   # expected False
full flow (soffice stubbed, rc=0)      → "Error: tracked changes remain in output document"   # expected success

Same with <w:instrText xml:space="preserve"> PAGE </w:instrText>. ("<w:del" is benign here — w:delText only appears inside deletions.) Suggested: match the element boundary instead of the bare prefix, e.g. import re + re.search(r"<w:(ins|del|moveFrom|moveTo)[\s/>]", data). I ran that against the same four fixtures: <w:ins w:id=…> still matches; w:insideH / w:instrText / clean do not. A regression test for both states (marker present → error; insideH/instrText only → success) would pin it.

Otherwise the direction is right — fail on timeout, verify the postcondition before claiming success.

Cross-check on the tightening suggestions for _docx_still_has_tracked_changes, run at head ad42dbab against five small DOCX fixtures (clean / table <w:insideH> borders / <w:instrText> field code / literal <w:ins> / namespace-aliased <x:ins xmlns:x="…wordprocessingml…">):

• Current marker check: correct on clean and <w:ins>, but false positive on <w:insideH> / <w:instrText> (clean documents) and false negative on the aliased <x:ins>.
• Boundary regex (from my earlier comment): fixes both false positives; still misses the aliased case.
• Namespace-aware parse — match {ns}ins|del|moveFrom|moveTo over each word/*.xml part, e.g. via defusedxml.ElementTree (already used by comment.py in this skill): correct on all five.

So the parse approach raised in the latest review covers both failure classes. If you take it, please keep the current fail-closed default (except → True, so an unreadable/unparseable output still errors instead of passing) and pin both cases in tests: clean insideH/instrText → success; literal or aliased revision marker → error.

Thanks for the review! I've updated _docx_still_has_tracked_changes to match revision marks by WordprocessingML namespace URI + local name instead of the literal w: prefix.

It now parses each word/*.xml part with xml.etree.ElementTree and looks for ins/del/moveFrom/moveTo in the http://schemas.openxmlformats.org/wordprocessingml/2006/main namespace, so a document that serializes the same namespace with a different prefix (e.g. <x:ins>) is still detected. Verified locally against six fixtures: clean docs, standard w:ins, non-w: prefixed x:ins/x:moveFrom, a clean doc with a non-w: prefix, and an unrelated-namespace del (all pass).

Hi @sylvesterkaczmarek — just a quick check-in: the namespace-URI rewrite has been approved and the branch is up to date with main. Is there anything else needed before this can be merged (e.g. a rebase or an additional review)? Happy to do whatever is required.

Nothing else is needed from my review. My approval on 54b19810 still stands: the namespace-aware tracked-change detection resolves the issue I raised, including aliased prefixes and the clean insideH / instrText cases, while parse failures remain fail-closed. The branch is mergeable; any remaining gate is the repository's normal maintainer review/merge process.

Thanks for re-confirming the approval — nothing further needed on my end. Happy for this to be merged whenever you have a moment.