Draw tables and split or merge cells with a pen and eraser (#308)

* Draw Table and Eraser: draw tables and split or merge cells with a pen (#303)

Insert › Tables › Draw Table and Table Layout › Draw › Draw Table / Eraser.
table.draw takes a pen stroke in page points: a rectangle outside a table
inserts a one-cell table of that size at the paragraph under its start; a
straight vertical or horizontal line inside a table splits the cells it
crosses (new grid column or row; untouched cells span it). table.eraser
merges the two cells beside the border nearest a point. Each stroke is one
undo step. In the app the buttons toggle pen and eraser modes with a live
preview, a crosshair with the tool's icon, and Esc to stop; canvas clicks
don't move the caret while a tool is on. Splitting through part of a
vertically merged cell and erasing beside one are refused with a clear
error. Catalog 384/430 -> 387/430.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Draw Table and Eraser: draw tables and split or merge cells with a pen (#303)

Insert › Tables › Draw Table and Table Layout › Draw › Draw Table / Eraser.
table.draw takes a pen stroke in page points: a rectangle outside a table
inserts a one-cell table of that size at the paragraph under its start; a
straight vertical or horizontal line inside a table splits the cells it
crosses (new grid column or row; untouched cells span it). table.eraser
merges the two cells beside the border nearest a point. Each stroke is one
undo step. In the app the buttons toggle pen and eraser modes with a live
preview, a crosshair with the tool's icon, and Esc to stop; canvas clicks
don't move the caret while a tool is on. Splitting through part of a
vertically merged cell and erasing beside one are refused with a clear
error. Catalog 384/430 -> 387/430.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Brandon Thomas <echelon@gmail.com>

docs/roadmap.md

@@ -1,6 +1,6 @@
 # WordCraft roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** minor (beta distance restated: ~15 points, ~150–230 h; previously: alpha gate checked: six core workflows pass; previously major: milestones moved here from ROADMAP.md; Current focus set from the re-measured gaps) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-10 · **Change:** trivial (M5: Draw Table and Eraser landed, #303; previously minor: beta distance restated: ~15 points, ~150–230 h; previously: alpha gate checked: six core workflows pass; previously major: milestones moved here from ROADMAP.md; Current focus set from the re-measured gaps) · **Target:** Microsoft Word (Microsoft 365) for Mac 16.113.4
 
 Forward-looking plan. The summary is [`ROADMAP.md`](../ROADMAP.md); the ranked work list is
 [`gaps.md`](gaps.md); the numbers are in [`target-app-parity.md`](target-app-parity.md). Hours are
@@ -49,7 +49,7 @@ partial rows are fidelity gaps (beta work), not broken workflows. WordCraft stay
 | M2 | Home tab | done except Paste Special, Clipboard pane, Style Inspector, Manage Styles, Asian typography (PRs open for four) | 5–10 h |
 | M3 | Insert tab | mostly done; equations done (#191); charts, SmartArt, icons, 3D, screenshot, online media missing | 50–80 h |
 | M4 | Layout and Design tabs | done except column balancing, group | 6–10 h |
-| M5 | Tables | done (row splitting, floating tables, style formatting); custom table styles (#256); Draw Table missing | 6–10 h |
+| M5 | Tables | done (row splitting, floating tables, style formatting); custom table styles (#256); Draw Table and Eraser (#303) | 6–10 h |
 | M6 | References | first version done (TOC fields, cross-references, Zotero); footnote continuation, 8 more bibliography styles missing | 15–25 h |
 | M7 | Review | done (balloons, paragraph-mark revisions); formatting revisions, move tracking, multilingual proofing missing | 35–60 h |
 | M8 | View | mostly done; window commands missing | 3–5 h |
@@ -71,6 +71,7 @@ languages, screen-reader access, ecosystem decisions (VBA, add-ins, cloud), an i
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-10 | trivial | M5: Draw Table and Eraser landed (#303) |
 | 2026-10-10 | trivial | Merged main: PRs that landed removed from the Current focus list |
 | 2026-10-10 | minor | Current focus heading back to ~150–230 h to beta: full number restored to the additive weighted sum (~60%), method aligned with the standard, no new evidence |
 | 2026-10-10 | minor | Alpha gate table added (core-workflow gate from the progress-docs standard): all six workflows pass, stage stays alpha |