Tables: table breaking and CSV data links (fixes #534) (#553)

Squash of PR #553 by @vangel76.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

docs/gaps.md

@@ -37,7 +37,7 @@ do them first.
 | F8 | TOLERANCE leftovers (feature control frames landed, #420: model, our own symbol drawing, DXF, command-line prompts, explode, grips): no Geometric Tolerance dialog, no LEADER/QLEADER tolerance annotation, no in-place editing of a frame's contents | `cmd/tolerance.rs` | Low-medium (mechanical) | 2–4 |
 | F9 | MTEXT editor is a dialog box, not in place; no columns, bullets, numbering, tabs, indents; no fields (FIELD, UPDATEFIELD); no spell check (SPELL) | `ui-egui/dialogs.rs:188-240` | Medium-high | 30–45 |
 | F10 | MLEADER: no MLEADEREDIT/ALIGN/COLLECT; MLEADERSTYLE has 5 fields (block content and spline/no-leader types are per command, not in the style; block content has no attributes) | `annotate.rs`, `cmd/mleader_content.rs`, `tables.rs:417` | Medium | 8–12 |
-| F11 | Tables: no cell styles, formulas, data links, table breaking | `cmd/table.rs` | Medium | 10–15 |
+| F11 | Tables (cell styles, formulas, TABLEDIT, TABLEEXPORT, table breaking and CSV data links landed, #534): formulas aren't read from or written as AutoCAD FIELD objects (other programs see values); number formats apply to formula results only; cell text doesn't wrap; custom cell styles, breaks and data links travel as CADCraft xdata (not through DWG); data links read CSV only (no Excel ranges, no write-back, not on the web); no cell-style tab in the Table Style dialog | `cmd/table/*`, `io/dxf_table.rs` | Low-medium | 6–10 |
 | F12 | Annotative scaling: the flag is stored, nothing scales; no scale list, no "Annotative Object Scale" commands | 4 uncovered menu items | Medium-high in layouts | 10–15 |
 | F13 | Hatch: 23 patterns (AutoCAD ~85; ours must stay original); no hatch dialog (HATCH and HATCHEDIT options work at the command line and in JSON), no MPolygon; HATCHEDIT can't add or remove boundaries; a hatch copied with its boundary isn't linked to the copy; HPGAPTOL closes gaps between curve ends only | `doc/src/library.rs`, `cmd/hatch.rs`, `cmd/hatch/edit.rs` | Medium | 8–12 |
 | F14 | **[alpha blocker]** No plot preview, plotter devices, PUBLISH/batch plot; Print opens no plot dialog (#160, PR #200). Plot styles (CTB and STB, [plot-styles.md](plot-styles.md)) apply since #410; their end/join/fill styles aren't applied and binary `.ctb`/`.stb` files can't be read | `palettes.rs:666` | High for sheet output | 15–25 |