Shape Format › Text: direction, alignment and linked text boxes (#369) (#380)

- Model: TextBody on text box parts (vert, anchor, next link); chain
  resolution ignores cycles, self-links and second claimants and caps
  chains at 256 boxes; pruning a box clears links to it.
- Layout: text boxes lay out in their own frame and turn like table
  cells (rotate 90°/270°), stacked text one letter to a line, Align Text
  top/middle/bottom; linked boxes split the first box's story by line,
  each at its own line length.
- DOCX: wps:bodyPr vert/anchor, wps:txbx id and wps:linkedTxbx id/seq
  read and written (ECMA-376).
- Commands shape.textDirection, shape.alignText, shape.link,
  shape.breakLink; ribbon Shape Format › Text group with drawn icons;
  Create Link waits for a click on the target box.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

docs/parity-checklist.md

@@ -2,7 +2,7 @@
 
 Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-processor feature catalog (`crates/engine/src/catalog.rs`) compared with the live command registry.
 
-**425 of 450 catalog features have commands (94.4%).**
+**428 of 450 catalog features have commands (95.1%).**
 
 | Tab | Live | Total |
 |---|---|---|
@@ -21,7 +21,7 @@ Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-
 | Table Layout | 31 | 31 |
 | Equation | 21 | 22 |
 | Picture Format | 14 | 14 |
-| Shape Format | 3 | 6 |
+| Shape Format | 6 | 6 |
 | Header & Footer | 5 | 5 |
 | Editing | 38 | 38 |
 | Tools | 5 | 6 |
@@ -67,12 +67,6 @@ Generated by `cargo xtask parity` (`wordcraft-cli parity --markdown`): the word-
 
 - Tools › Ink Equation (`insert.inkEquation`)
 
-### Shape Format
-
-- Text › Text Direction (`shape.textDirection`)
-- Text › Align Text (`shape.alignText`)
-- Text › Create Link (`shape.link`)
-
 ### Tools
 
 - Templates › Templates and Add-ins (`tools.templates`)