T14c, T15 review fixes: Tab steps past merges, empty charts lay out nothing, flat domains widen by size, pointed parts let go of shrunk data, signed waterfall totals, sunburst children take their share, today stays on the timeline

TASKS.md

@@ -49,8 +49,8 @@ Per-component lines live in `tasks/`. Tags there:
 - [x] T13a Lists & Trees · Lists
 - [x] T13b Lists & Trees · Trees
 - [x] T13c Lists & Trees · Files
-- [ ] T14a Tables · Core
-- [ ] T14b Tables · Columns & rows
+- [x] T14a Tables · Core
+- [x] T14b Tables · Columns & rows
 - [ ] T14c Tables · Grids
 - [ ] T15a Charts · Cartesian
 - [ ] T15b Charts · Parts and spreads
@@ -204,8 +204,11 @@ Per-component lines live in `tasks/`. Tags there:
 | T13c | 1 | FAIL | the cursor kept its index through a re-sort, so Enter opened another file |
 | T13c | 2 | PASS | |
 | T14a | 1 | FAIL | numbers and words compared out of order in a mixed column, and the sort panicked |
+| T14a | 2 | PASS | |
 | T14b | 1 | FAIL | a removed filter rule left its typing to the next rule, and two sort rows could take one column |
+| T14b | 2 | PASS | |
 | T14c | 1 | FAIL | a shrunk grid kept its cursor outside, long column letters overflowed, presses landed in merged cells, Tab left the grid, and ranges counted text and blanks |
-| T15a | 1 | — | pending review |
-| T15b | 1 | — | pending review |
-| T15c | 1 | — | pending review |
+| T14c | 2 | FAIL | Tab stepped into a merge's hidden cells |
+| T15a | 1 | FAIL | an empty chart's SVG export panicked, and a huge flat domain looped forever making ticks |
+| T15b | 1 | FAIL | a pointed part outlived shrinking data, an empty heatmap made up a cell, a negative total flipped its bar, and a sunburst child filled its parent's arc |
+| T15c | 1 | FAIL | eight charts kept a pointed part past their data, and the Gantt today line ran past the timeline |