Merge origin/main into spanish-proofing

Resolve the ROADMAP.md conflict: main's progress-log entries come first, then
the Spanish proofing entry, and the status line keeps both changes.

docs/file-format-parity.md

@@ -1,6 +1,6 @@
 # File-format parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-22 · **Change:** trivial (the file commands that change the document are checked on a protected document, the protection of a protected document needs an explicit stop, the session author can't change through `file.setAuthor` under protection (the CLI's `--author` uses the same protection check), and the post-check compares the settings and the metadata; previously trivial: a document with many content controls saves in the time the controls take, #13; previously trivial: `majorBidi`/`minorBidi` theme fonts follow the settings' theme font language, as measured in Word; previously trivial: Word signature lines are kept on save, still signable; previously trivial: Times New Roman keeps Liberation Serif under the roman-font rule; previously trivial: shape gradients and transparency, #1500; previously trivial: a folder that keeps no Unix modes, such as a NAS share mounted by GVFS, still takes a save, #3003; previously trivial: a text frame in the paragraph defaults frames nothing, #2360; previously trivial: table style band sizes written, a style without them unbanded as in Word, #3415; previously trivial: HTML export writes ruby (furigana, phonetic guides) and HTML import reads it back, #1681; previously trivial: RTF import decodes the East Asian multibyte code pages, #1653; previously trivial: PDF export: lam-alef drawn as two glyphs at one x extracts in reading order, #2310; previously trivial: native .json stores pictures and kept parts as base64, #586 follow-up; previously trivial: ODT headers and footers read from each master page, #863; previously trivial: RTF import compares heading and code formatting with the file's stylesheet; previously trivial: text typed into a content control takes the control's formatting; localized placeholder styles recognised; previously trivial: forms protection keeps its content controls: no inserting, Properties or Remove Content Control; previously trivial: Word XML and web pages saved as `.doc` open by what they hold, #2853; previously trivial: a VML shape in a header cell is always placed on the page, user-checked in Word for Mac, #1775; previously trivial: `w:sym` characters keep their symbol font when the text's font changes and are written back as `w:sym`, #2036; previously trivial: RTF export writes sections (gap 19); previously trivial: ODT export writes sections (gap 19); previously trivial: two lines in one and horizontal in vertical (`w:eastAsianLayout`) kept on save; previously trivial: PDF outline targets follow leading page breaks; previously trivial: positional tabs `w:ptab` read and kept on save, #2367; previously trivial: DOCX: mixed right-to-left runs split and marked `w:rtl` with their language, #1543; previously trivial: `w:doNotTrackMoves` round-trips and turns move tracking off; previously trivial: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: DOCX glossary documents (building blocks) read, kept and written; previously trivial: cached field results keep their visible run formatting; previously trivial: cached REF results retain hyperlink destinations; previously trivial: CLI conversions can explicitly refresh fields; previously trivial: a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: a pasted HTML `<blockquote>` is an indented paragraph, not the Quote style, #1270); previously trivial: every table style part round-trips, #714; previously trivial: VML freeforms read and kept on save; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: `flowChartOr` draws its circle and cross spokes, as in Word; previously trivial: RTF: Mac OS Roman and DOS text, #1653; previously trivial: VML text boxes keep their internal margins, fit to their text and vertical alignment; hidden drawings not shown; previously trivial: PDF export draws horizontal and vertical lines inside groups, #1474; previously trivial: symbol-font text exported as Unicode, #776; previously trivial: text-box margins, Resize shape to fit text and freeforms in groups, #743; previously trivial: formatted paste from the system clipboard's HTML and RTF, #687; previously trivial: independent complex-script formatting inheritance and round-trip regression tests; previously trivial: import/export fixes for TXT, RTF, ODT, HTML and LaTeX, #433–#440; previously major: first version; every format Word reads or writes, measured from the readers and writers on origin/main) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4, plus Word for Windows' extra formats
+> **Last reviewed:** 2026-10-11 · **Last updated:** 2026-10-23 · **Change:** trivial (a table cell span from a `.json` file stays within 63 columns through Insert Column and Merge Cells, #3637; previously trivial: the file commands that change the document are checked on a protected document, the protection of a protected document needs an explicit stop, the session author can't change through `file.setAuthor` under protection (the CLI's `--author` uses the same protection check), and the post-check compares the settings and the metadata; previously trivial: a document with many content controls saves in the time the controls take, #13; previously trivial: `majorBidi`/`minorBidi` theme fonts follow the settings' theme font language, as measured in Word; previously trivial: Word signature lines are kept on save, still signable; previously trivial: Times New Roman keeps Liberation Serif under the roman-font rule; previously trivial: shape gradients and transparency, #1500; previously trivial: a folder that keeps no Unix modes, such as a NAS share mounted by GVFS, still takes a save, #3003; previously trivial: a text frame in the paragraph defaults frames nothing, #2360; previously trivial: table style band sizes written, a style without them unbanded as in Word, #3415; previously trivial: HTML export writes ruby (furigana, phonetic guides) and HTML import reads it back, #1681; previously trivial: RTF import decodes the East Asian multibyte code pages, #1653; previously trivial: PDF export: lam-alef drawn as two glyphs at one x extracts in reading order, #2310; previously trivial: native .json stores pictures and kept parts as base64, #586 follow-up; previously trivial: ODT headers and footers read from each master page, #863; previously trivial: RTF import compares heading and code formatting with the file's stylesheet; previously trivial: text typed into a content control takes the control's formatting; localized placeholder styles recognised; previously trivial: forms protection keeps its content controls: no inserting, Properties or Remove Content Control; previously trivial: Word XML and web pages saved as `.doc` open by what they hold, #2853; previously trivial: a VML shape in a header cell is always placed on the page, user-checked in Word for Mac, #1775; previously trivial: `w:sym` characters keep their symbol font when the text's font changes and are written back as `w:sym`, #2036; previously trivial: RTF export writes sections (gap 19); previously trivial: ODT export writes sections (gap 19); previously trivial: two lines in one and horizontal in vertical (`w:eastAsianLayout`) kept on save; previously trivial: PDF outline targets follow leading page breaks; previously trivial: positional tabs `w:ptab` read and kept on save, #2367; previously trivial: DOCX: mixed right-to-left runs split and marked `w:rtl` with their language, #1543; previously trivial: `w:doNotTrackMoves` round-trips and turns move tracking off; previously trivial: legacy outline, shadow, emboss and imprint text effects drawn, #2534; previously trivial: DOCX glossary documents (building blocks) read, kept and written; previously trivial: cached field results keep their visible run formatting; previously trivial: cached REF results retain hyperlink destinations; previously trivial: CLI conversions can explicitly refresh fields; previously trivial: a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: a pasted HTML `<blockquote>` is an indented paragraph, not the Quote style, #1270); previously trivial: every table style part round-trips, #714; previously trivial: VML freeforms read and kept on save; previously trivial: multi-paragraph field instructions no longer add blank lines; previously trivial: `flowChartOr` draws its circle and cross spokes, as in Word; previously trivial: RTF: Mac OS Roman and DOS text, #1653; previously trivial: VML text boxes keep their internal margins, fit to their text and vertical alignment; hidden drawings not shown; previously trivial: PDF export draws horizontal and vertical lines inside groups, #1474; previously trivial: symbol-font text exported as Unicode, #776; previously trivial: text-box margins, Resize shape to fit text and freeforms in groups, #743; previously trivial: formatted paste from the system clipboard's HTML and RTF, #687; previously trivial: independent complex-script formatting inheritance and round-trip regression tests; previously trivial: import/export fixes for TXT, RTF, ODT, HTML and LaTeX, #433–#440; previously major: first version; every format Word reads or writes, measured from the readers and writers on origin/main) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4, plus Word for Windows' extra formats
 
 Every format Word opens or saves, what WordCraft does with it, and how it's tested. Fidelity is the
 share of a typical real-world file's content and formatting that survives (read: shows correctly;
@@ -68,7 +68,7 @@ Weights are the share of a Word user's file traffic (estimate). Read/write: ✅
 | `.tex` LaTeX | — | — | ✅ | ✅ | — | — | `crates/formats/src/tests.rs` | Beyond Word (#11), incl. math |
 | Pictures for Insert › Picture, drag-and-drop and paste | — | R | ✅ | — | — | — | `insert_picture_takes_a_windows_metafile` (engine), `paste_picture.rs` | PNG, JPEG, GIF, WebP, BMP, and Windows Metafile `.wmf` / Enhanced Metafile `.emf` at their own frame size (#802), drawn by `crates/metafile`. Not yet: SVG, TIFF, ICO, HEIC |
 | `.png` page images | — | (Save as picture, Mac) | — | ✅ | — | — | `io_ext.rs` | |
-| `.json` document model | — | — | ✅ | ✅ | — | — | engine tests | For agents |
+| `.json` document model | — | — | ✅ | ✅ | — | — | engine tests | For agents. A table cell's span is any number in the file; Insert Column and Merge Cells count it as at most 63 columns, as the `.docx` reader does (#3637) |
 
 ## DOCX in depth
 
@@ -416,3 +416,4 @@ Imported text fields use the first nonempty cached result run's formatting on th
 | 2026-10-18 | trivial | Word 2007 WordArt (VML `v:textpath` in the body or a header logo) shown as a text box with its text, font, colour and warp, not dropped (#2875) |
 | 2026-10-20 | trivial | A folder that keeps no Unix modes (a NAS share mounted by GVFS) still takes a save instead of failing with "Operation not supported" (#3003) |
 | 2026-10-16 | trivial | Word's Table of Contents content control (`w:docPartObj`) is kept around a TOC that isn't in the heading-and-entries form (#2427) |
+| 2026-10-23 | trivial | `.json`: a table cell span past 63 columns no longer overflows when a column is inserted through the cell or the cell is merged (#3637) |

docs/ui-parity.md

@@ -1,6 +1,6 @@
 # UI parity with Microsoft Word
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-22 · **Change:** trivial (File › Options disables the User name field while Restrict Editing is active; previously trivial: while editing a header or footer, a click in the other one edits it there without scrolling; previously trivial: explicit documents keep the editor when recovery discovery finishes; readable recovery controls; previously trivial: Insert Table of Figures dialog: any caption label, #3013; previously trivial: Home › Underline drop-down shows its lines, #2738; previously trivial: the text context menu includes the formatting mini toolbar, #2959; previously trivial: personal templates in File › New and Save as Word Template, #2852; previously trivial: the scrollbar page tip stays on one line as the page number grows, #3341; previously trivial: File › Home and New: templates and recent documents are buttons named for screen readers, #3176; previously trivial: forms protection greys out the Developer tab's control buttons and Properties; previously trivial: AltGr doesn't open KeyTips, #2388; previously trivial: closing the header or footer puts the caret back where it was in the body, #3331; previously trivial: Format Page Numbers dialog: number format and Continue from previous section / Start at, #1113; previously trivial: inline pictures drag to a dashed insertion cursor and stay inline, #2233, #2234; previously trivial: Save Changes prompt: a text file saved over itself closes, #2376; previously trivial: the equation being edited is framed as in Word: an outline as tall as its line, a grip, an options strip that opens its menu, and its current argument shaded; previously trivial: the table handles show while the caret is in the table, #2428; previously trivial: legacy menu keys, #1697; previously trivial: Shape Fill › Gradient and the Format Shape pane, #1500; previously trivial: Focus fills the screen, and Full Screen View shows the pages alone, #1678; previously trivial: the text pointer over the page is drawn black or white on Windows, #1746; previously trivial: a click in the header/footer band from the body no longer scrolls to the body text, #2103; previously trivial: File › Recover follows the app theme, #3243; previously trivial: long navigation headings wrap onto further lines within the pane, #3015; previously trivial: clearing a no-match font query keeps the recent heading visible, #2068; previously trivial: dragging the vertical scrollbar names the page at the top of the window, #2551; previously trivial: Add Font imports every selected font file, #1789); previously trivial (File › Close keeps the window, #1712; previously trivial: the Spike: Ctrl+F3 and Ctrl+Shift+F3; previously trivial: Ctrl+wheel zoom no longer scrolls the document, #1743; previously trivial: a mouse drag on a table leaves the view where it is, #1738; previously trivial: numbered headings, #1793; previously trivial: Navigation Find exposes Results, #2096; previously trivial: the tab strip never draws tabs over Comments / Editing / Share, #2026; previously trivial: Columns on selected text, #2024; previously trivial: Different First Page headers reachable from page 1, #2826; previously trivial: a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: Read Mode keeps the keyboard, shows whole columns and keeps text clear of the page-turn bar, #1772); previously trivial: font list entries of tall-ascent fonts sit in their row, not cut off, #2570); previously trivial: Split Cells and Convert Text to Table dialogs follow Word's merged-cell limits and Initial column width, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout text fills the window width, #1876; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717)); previously trivial: comment balloons readable in the dark theme, #2045; previously trivial: Recently Used Fonts section at the top of the font list, #2068; previously trivial: web preferences kept between visits, #2132; previously trivial: dialog close control: a Windows-style box at the title bar's right end, the whole box clickable, red on hover, #1885); previously trivial (Modify Table Style formats every table style part, #714); previously trivial: a click on the ribbon chrome hands the keyboard to the page in the same frame, #1093 follow-up; previously trivial: Page Setup vertical alignment, #1320; previously trivial: the app opens on the Home tab every launch, as in Word; previously trivial: no document behind the Start screen, #1129; previously trivial: equation pictures share a few textures, #1002; previously trivial: selection bar in the left margin, #856; previously trivial: table column and row markers on the rulers, #700; previously trivial: table borders and the resize handlLine truncated
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-23 · **Change:** trivial (the Font dialog previews "NaN" or "inf" in the Size box at 12 pt, #3663; previously trivial: File › Options disables the User name field while Restrict Editing is active; previously trivial: while editing a header or footer, a click in the other one edits it there without scrolling; previously trivial: explicit documents keep the editor when recovery discovery finishes; readable recovery controls; previously trivial: Insert Table of Figures dialog: any caption label, #3013; previously trivial: Home › Underline drop-down shows its lines, #2738; previously trivial: the text context menu includes the formatting mini toolbar, #2959; previously trivial: personal templates in File › New and Save as Word Template, #2852; previously trivial: the scrollbar page tip stays on one line as the page number grows, #3341; previously trivial: File › Home and New: templates and recent documents are buttons named for screen readers, #3176; previously trivial: forms protection greys out the Developer tab's control buttons and Properties; previously trivial: AltGr doesn't open KeyTips, #2388; previously trivial: closing the header or footer puts the caret back where it was in the body, #3331; previously trivial: Format Page Numbers dialog: number format and Continue from previous section / Start at, #1113; previously trivial: inline pictures drag to a dashed insertion cursor and stay inline, #2233, #2234; previously trivial: Save Changes prompt: a text file saved over itself closes, #2376; previously trivial: the equation being edited is framed as in Word: an outline as tall as its line, a grip, an options strip that opens its menu, and its current argument shaded; previously trivial: the table handles show while the caret is in the table, #2428; previously trivial: legacy menu keys, #1697; previously trivial: Shape Fill › Gradient and the Format Shape pane, #1500; previously trivial: Focus fills the screen, and Full Screen View shows the pages alone, #1678; previously trivial: the text pointer over the page is drawn black or white on Windows, #1746; previously trivial: a click in the header/footer band from the body no longer scrolls to the body text, #2103; previously trivial: File › Recover follows the app theme, #3243; previously trivial: long navigation headings wrap onto further lines within the pane, #3015; previously trivial: clearing a no-match font query keeps the recent heading visible, #2068; previously trivial: dragging the vertical scrollbar names the page at the top of the window, #2551; previously trivial: Add Font imports every selected font file, #1789); previously trivial (File › Close keeps the window, #1712; previously trivial: the Spike: Ctrl+F3 and Ctrl+Shift+F3; previously trivial: Ctrl+wheel zoom no longer scrolls the document, #1743; previously trivial: a mouse drag on a table leaves the view where it is, #1738; previously trivial: numbered headings, #1793; previously trivial: Navigation Find exposes Results, #2096; previously trivial: the tab strip never draws tabs over Comments / Editing / Share, #2026; previously trivial: Columns on selected text, #2024; previously trivial: Different First Page headers reachable from page 1, #2826; previously trivial: a copied equation also goes in the clipboard's MathML formats, #1297; previously trivial: Read Mode keeps the keyboard, shows whole columns and keeps text clear of the page-turn bar, #1772); previously trivial: font list entries of tall-ascent fonts sit in their row, not cut off, #2570); previously trivial: Split Cells and Convert Text to Table dialogs follow Word's merged-cell limits and Initial column width, #2592; previously trivial: a new source's Tag is made like Word's, three letters of the author and two digits of the year with a number added when taken, and an edit keeps the Tag, #2094; previously trivial: Web Layout text fills the window width, #1876; previously trivial: Language dialog keeps inherited proofing language and no-proof choices (#2717)); previously trivial: comment balloons readable in the dark theme, #2045; previously trivial: Recently Used Fonts section at the top of the font list, #2068; previously trivial: web preferences kept between visits, #2132; previously trivial: dialog close control: a Windows-style box at the title bar's right end, the whole box clickable, red on hover, #1885); previously trivial (Modify Table Style formats every table style part, #714); previously trivial: a click on the ribbon chrome hands the keyboard to the page in the same frame, #1093 follow-up; previously trivial: Page Setup vertical alignment, #1320; previously trivial: the app opens on the Home tab every launch, as in Word; previously trivial: no document behind the Start screen, #1129; previously trivial: equation pictures share a few textures, #1002; previously trivial: selection bar in the left margin, #856; previously trivial: table columLine truncated
 
 Recovery discovery no longer interrupts an explicitly created or opened document. Older copies remain in File › Recover, whose buttons use the interface palette. See [local recovery](recovery.md).
 
@@ -287,3 +287,4 @@ labels unambiguous. Those extra-number assignments have not been compared with W
 | 2026-10-19 | trivial | Personal templates (#2852): File › New › Personal lists the user templates folder (`<settings>/Templates`, or File › Options › Advanced › File locations › User templates), subfolders as categories, searchable; a template opens as an untitled document attached to it; Save As › Save as Word Template starts there (`file.listTemplates`, `ui.saveAsTemplate`) |
 | 2026-10-15 | trivial | Double-clicking a page number in a later page's footer opens the footer there: the first click no longer moves the caret to the body text and scrolls the view up to it (#2103) |
 | 2026-10-20 | trivial | File › Home and New: each template (thumbnail and caption) and each recent document is one button named by its caption or file name (with the path when two recent file names are the same), so a screen reader announces it instead of unnamed text (#3176) |
+| 2026-10-23 | trivial | Font dialog: "NaN" or "inf" in the Size box previews the text at 12 pt instead of stopping the app while drawing the preview (#3663) |