feat(grid): copy column values as list or SQL IN clause

[pokertour]

Closes #459

What

Adds two entries to the results grid context menus to copy the values of a single column:

• Copy column values — newline-separated, one value per line (null for NULL cells, same formatting as the existing cell copy).
• Copy column values (IN clause) — a ready-to-paste SQL list: numbers raw (1, 2, 3), strings quoted with '' escaping ('O''Brien'), NULL for nulls — reusing the same value rendering as the existing Copy as SQL INSERT.

Both entries appear in:

• the cell context menu (applies to the clicked column), using the selected rows or all visible rows when nothing is selected — same fallback as Copy selected row(s);
• the column header context menu, below the existing Copy column name entries.

Implementation

• Two pure helpers in src/utils/clipboard.ts (columnValuesToText, columnValuesToInClause), one copyColumnValues callback in DataGrid.tsx, menu items, en/fr i18n keys.
• New src/utils/clipboard.test.ts with 4 vitest cases (newline join, null label, IN quoting, quote escaping).

Note: #481 also creates clipboard.test.ts; whichever merges second will have a trivial conflict there (independent test blocks, concatenate).

Manually tested on Windows: both menus, with/without row selection, columns containing NULLs and strings with quotes, pasting the IN list into a query.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (5 files)

• src/components/ui/DataGrid.tsx
• src/i18n/locales/en.json
• src/i18n/locales/fr.json
• src/utils/clipboard.test.ts
• src/utils/clipboard.ts

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_{Reviewed by kimi-k2.6 · Input: 109.9K · Output: 8.7K · Cached: 358.8K}

[pokertour]

Waiting clarification on the issue about the way to export data