fix(chart): pass series index to data-table keys (#1150)

docs/chart-parity.md

@@ -1,6 +1,6 @@
 # Chart parity
 
-> **Last reviewed:** 2026-10-18 · **Last updated:** 2026-11-02 · **Change:** minor (doughnut charts: every series is a concentric ring, the first series innermost; hole size and first slice angle kept; rotated slices cover their own sweep; legend names categories; earlier: charts resize from eight handles, chart data tables, legend keys and borders, native XLSX round-trip and print/PDF; earlier: selected chart source outlines stay beneath floating objects) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
+> **Last reviewed:** 2026-10-18 · **Last updated:** 2026-11-07 · **Change:** minor (chart-data-table keys pass the series index to the shared combo plot-kind rule, restoring compilation after #1150; earlier: doughnut charts: every series is a concentric ring, the first series innermost; hole size and first slice angle kept; rotated slices cover their own sweep; legend names categories; earlier: charts resize from eight handles, chart data tables, legend keys and borders, native XLSX round-trip and print/PDF; earlier: selected chart source outlines stay beneath floating objects) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
 
 Excel's chart types and chart elements against GridCraft. Part of
 [target-app-parity.md](target-app-parity.md). **Breadth ~50%, ready ~30%, 40–60 h** (estimated).
@@ -107,6 +107,7 @@ are (#1686). Such series get no `numCache`/`strCache` on save (#1690).
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-11-07 | minor | Chart-data-table keys use the shared plot-kind helper with their series index after #1150. A focused regression checks the first combo series uses a column key and later series use line keys. No readiness score change. |
 | 2026-11-02 | minor | Charts move and resize from eight handles, each moving only its own edges (#190); resizing leaves the work list (1–2 h, within the 40–60 h rounding) |
 | 2026-11-01 | minor | Chart data tables for column, bar, line, area and compatible combo charts: command/UI controls, formatted source values, blanks, grouped category headers, legend keys, independent borders, shared print/PDF rendering and native c:dTable import/export. Dense tables show a space notice; no readiness score change. |
 | 2026-10-29 | minor | Selected charts highlight their source cells beneath floating objects, so the blue outline no longer crosses the chart; uncovered source cells remain highlighted (#2861) |