LibreChat/packages
Danny Avila f18a95486e ✨ feat: Improve DOCX rendering and surface filename in panel header
Two UX improvements based on hands-on use of the office preview pipeline.

DOCX rendering — mammoth strips the navy banners, cell shading, and
column layouts that direct-formatted docs apply (python-docx-style
output is a common case). The flat `<p><strong>X</strong></p>` and
bare `<table><tr><td>` it emits looks washed out next to the source.
Three targeted compensations:

- Style map promotes `Title`, `Subtitle`, `Heading 1` thru `Heading 6`,
  and `Quote` paragraphs to their semantic HTML equivalents (mammoth's
  default only handles Heading 1-6, missing Title/Subtitle/Quote).
- Extra CSS scoped to `.lc-docx` gives the first table row sticky-
  looking header styling regardless of `<thead>` (mammoth never emits
  `<thead>`), adds zebra striping, and treats the python-docx
  `<p><strong>X</strong></p>` section-heading idiom as a pseudo-h2 with
  a thin accent left border so document structure survives the round
  trip. Headings get a left accent or underline so they read as
  headings instead of just bold paragraphs.
- Sanitizer's `allowedAttributes` opens `class` on the heading and
  block tags the styleMap and CSS heuristics rely on. `<script>`,
  event handlers, javascript: URLs, etc. are still stripped — the
  existing security regression suite catches any drift.

Panel header — `Artifacts.tsx` showed a generic "Preview" pill for
preview-only artifacts. Single-tab Radio is a no-op; surfacing the
document filename there gives the user something useful in the chrome
without taking real estate. `displayFilename` handles the sandbox
dotfile suffix the upload pipeline applies.

Tests: html.spec.ts +1 (new CSS-emission lock), 71/71. Backend files
suite 428/428. Client 308/308.
2026-05-04 11:32:28 -04:00
..
api ✨ feat: Improve DOCX rendering and surface filename in panel header 2026-05-04 11:32:28 -04:00
client
data-provider
data-schemas