Model: Series.trendlines (Vec<Trendline>, serde default) with kind
(linear, exponential, logarithmic, polynomial 2..6, power, moving
average 2..255), name, forward/backward forecast, set intercept,
equation / R² display and line colour, width and dash.
XLSX: read and write <c:trendline> in CT_Trendline child order, placed
after dLbls and before the data references in line, bar, area, scatter,
bubble and stock series; unknown types are skipped.
Chart: least-squares fits (transformed for exp/log/power, skipping
non-positive values; polynomials via normal equations on centred,
scaled x with partial pivoting), moving averages, forecasts that widen
the category or x axis, clipping to the plot, equation and R² labels and
legend entries ("Linear (Sales)"). Degenerate data draws nothing.
Engine: chart.addElement element="trendline" adds (type, series, order,
period, forward, backward, displayEquation, displayRSquared) or removes
trendlines; document.inspect lists each chart's trendlines.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
View › Page Layout (and the status-bar button) now shows the sheet as printed
pages on a desk instead of overlaying page outlines on the grid.
- Model/XLSX: per-sheet view mode (normal / pageLayout / pageBreakPreview),
saved as <sheetView view="…"> and read back. view.* commands set it per
sheet ({sheet?}) without an undo step or dirtying a clean workbook.
- Engine: paper::PageGrid paginates the sheet from A1 with the print
pagination (print::split_bands, shared with PDF export and printing) and
maps cells to pages and back; header/footer section helpers
(split/join, &[Page] field names) shared with the PDF header code.
pageLayout.headerFooter takes {part, section, text} for one section and a
sheet; header/footer strings are capped at 255 characters.
view.ruler toggles the rulers.
- UI: Geo carries the page grid, so painting, hit-testing, selection,
editing, objects and scrolling work through the page transform; frozen
panes are ignored in this view. Pages with margins and gaps, "Click to add
data" pages, rulers in inches (English) or centimetres, headers/footers
drawn on printed pages, click a margin section to edit it in place; a
click elsewhere commits (one undo step), Escape cancels. Header & Footer
contextual tab: presets, Page Number, Number of Pages, Current Date/Time,
File Path, File Name, Sheet Name, Go to Header/Footer. View › Ruler.
- New strings in every catalog; new code-drawn icons; desk colour token.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Pass-through of package content GridCraft does not model: on read the raw
parts are kept with their content types and relationship graph per owner
(package root, workbook, sheet); on write they get fresh part names where
needed and new relationship ids, and the r:ids in kept XML are rewritten.
Kept: custom document properties, ribbon customisation, add-in task panes,
custom XML, links to external workbooks with <externalReferences> (never
followed), connections, sheet query tables, printer settings with the
<pageSetup r:id> (#324), form and ActiveX controls, OLE objects and sheet
backgrounds with their VML shapes (merged with GridCraft's note shapes).
Content whose graph reaches parts GridCraft rewrites is dropped with a
warning; sheet content goes with its sheet and is not copied by Copy Sheet.
Fixes#324
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Clean-room import of Excel 97-2003 workbooks from the public [MS-CFB] and
[MS-XLS] specifications: compound-file streams (FAT, mini FAT, directory
tree), the BIFF8 Workbook stream with Continue records, shared strings,
all cell records, formulas decoded from Ptg tokens (shared and array
formulas, 3-D refs, names, add-in/newer functions by name) with cached
results, number formats, the 1904 date system, merges, column widths, row
heights, defined names and print areas/titles. Encrypted (FILEPASS) and
BIFF5 files are refused with a clear message; everything else is skipped
with a warning. .xls opens as a new unsaved workbook (Save As .xlsx).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
New sheet before the active one with the sorted history, a FORECAST.ETS
forecast column, FORECAST.ETS.CONFINT lower/upper bounds, an optional
FORECAST.ETS.STAT table, an Excel table over the data and a line or column
chart. Parameters: timeline/values (default: the selection's first two
columns), end or periods, confidence interval, seasonality, missing-point
fill, duplicate aggregation, statistics, chart kind. Data ribbon button
opens a form dialog; programmatic calls never do. gridcraft-functions
exports Timeline to continue a timeline (numeric step or calendar months).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
AAA exponential smoothing (Hyndman et al. 2008, ETS(A,A,A)) over an evenly
spaced timeline: documented seasonality, data completion and aggregation
arguments, calendar-month date timelines, autocorrelation seasonality
detection, state-space prediction intervals, statistic types 1-8.
Smoothing parameters minimise the in-sample SSE (grid + clamped
Nelder-Mead). XLSX export treats the family's range arguments as
array-taking (no spurious dynamic-array metadata), FORECAST/FORECAST.LINEAR
included.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A chart linked to a PivotTable: series are built from the report
(innermost row items x column items/value fields, totals excluded) and
rebuilt on every refresh or layout change; c:pivotSource round trip;
chart series accept union references.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Model: Sheet.edit_ranges (title, ranges, optional password hash,
security descriptor) and gridcraft_model::password: the ECMA-376 legacy
16-bit hash and the salted, iterated SHA-2 hash (SHA-512/384/256; other
algorithms, damaged hashes and spin counts over 10,000,000 are refused).
New passwords use SHA-512, spin count 100000. Adds the sha2 crate.
- XLSX: <protectedRanges> read and written; an unreadable password keeps
the range locked.
- review.allowEditRanges {action: list|add|modify|delete|unlock, ...}: empty
params list; ranges can't change while the sheet is protected; unlock
verifies the password for the session. Not journaled (passwords).
- Locked-cell checks (commit guard, cell.set, picture in cell) let edits
through in open or unlocked ranges; ranges move with structural edits.
- Ribbon button and a form dialog (menu invocation only).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A value field can be a calculated field whose formula is evaluated on
the sums of the fields it names for each report cell (Excel's documented
semantics). Command to add/change/delete, dialog from the field pane,
XLSX cacheField formula round trip.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Evaluator special form returning the range (or array) without its blank
outer rows and columns; trim codes 0-3 as documented; written as
_xlfn.TRIMRANGE. The trim-reference operators are not parsed yet.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Thai number words with บาท / สตางค์ / ถ้วน, rounded to satang, ล้าน
repeating per six digits, ลบ for negatives.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
New command home.insertCopiedCells: makes room at the active cell and
pastes the clipboard there, as one undo step. Whole copied rows or columns
insert whole rows or columns; a copied block shifts the cells down or right
(Insert Paste dialog from the menu). A cut of whole rows or columns moves
them and closes the gap (Insert Cut Cells). The cell and header context
menus show the entry while the clipboard holds a copy.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- review.previousComment / review.nextComment select the previous/next
threaded comment in reading order (row by row), across visible sheets in
tab order, wrapping around; disabled when the workbook has no comments.
- review.showComments {on?} toggles the Comments pane as session state, so
the CLI, MCP and control channel can drive it; the UI pane follows it.
- review.showAllNotes {on?} displays every note (session display setting,
not saved in the file).
- review.convertToComments turns every note in the workbook into a threaded
comment with the same author and text, as one undoable edit.
- Ribbon: Previous/Next and a Show Comments toggle in the Comments group;
Show All Notes and Convert to Comments in the Notes menu. Strings in all
catalogs. Parity checklist regenerated (263 / 290).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
PERCENTOF = SUM(subset) / SUM(all), written as _xlfn.PERCENTOF.
EUROCONVERT uses the fixed EU conversion rates for the currencies the
function documents, with currency rounding and triangulation precision.
New Add-in category for EUROCONVERT.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Odd first and last coupon periods via quasi-coupon periods, from the
formulas on Microsoft's public function pages. ODDLYIELD is closed form;
ODDFYIELD bisects ODDFPRICE (bounded). Financial is now 55 / 55.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Progress docs per craftrules standards/progress-docs.md: target-app parity, gaps, roadmap with alpha gate, readiness by audience (full / mainstream / essentials) with Opus 5.5 hours, and feature, format, hardware, UI and localization parity docs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Eduardo Soares
skylar taylor-barrick
Brandon Thomas
lloyd
neilcawse
vangel76