[Cemoche]

Closes #115

Summary

The row detail panel from Task 7 now also works on SQL tab results, read-only.

• Toggle: Ctrl+Space or Space in the results grid, or the toolbar button. In the editor, Ctrl+Space stays completion; this is tested with the real CodeMirror. The window-wide open state and the panel width are shared across tab kinds.
• Keymap: grid.rowDetails keeps its tableTab scope, and no id was added. The grid reads the shortcut in its own keydown, as grid.copyCells already does in the results grid. In a table tab the grid now takes Ctrl+Space itself, so the window binding can't toggle twice. That window binding is unchanged: it still toggles from anywhere outside a text field.
• Layout: the panel sits right of the editor and the results, under the SQL toolbar. That is the same position as in table tabs.
• When it shows:
  • The panel shows while the run has a result set or is still running.
  • With no run, or a run without a result set, there is no panel. The toolbar button is then softDisabled with its tooltip, and the switch keeps its value.
  • The panel reads "No row selected" in the Message view, during a run, and before a row is picked.
• Result N: the panel follows the result set on screen. Switching sets clears the selection and the Shift+click anchor.
• Fields: read-only. JSON is indented, and NULL shows as in the grid. A cut value shows what the result has, plus the Quick Look note "Only the start of this value was loaded." (query results have no key to fetch the rest by).
• Escape in the panel returns to the results grid, or to the editor in the Message view.
• Docs: amendment [Refonte UI] Row detail panel for SQL tab results #115 in spec §2.3 (it replaces the Task 7 "no panel on SQL results / button disabled" phrases), the README Results bullet and a shortcut-table row.

Follow-up from the review: #141. A grid.rowDetails rebinding that collides with a SQL-tab key (query.save) is not flagged by Settings; grid.copyCells has the same exposure.

No Rust change.

How it was tested

$ pnpm exec vitest run --maxWorkers=1     # 109 files, 1403 tests passed; after the review round: DataGrid + readmeShortcuts green
$ pnpm exec tsc --noEmit                  # clean

Manual check list (light and dark)

1. In a SQL tab, run select 1 as id, '{"a":[1,2]}'::jsonb as doc, null as n, repeat('x', 100000) as big;.
   • The toolbar's right-panel button is enabled.
   • Click a cell and press Space: the panel opens on the right of the editor and the results, at the width saved for table tabs.
   • Each field is read-only and greyed: doc is indented, n is an empty box with the NULL placeholder, and big shows its start, "…" and "Only the start of this value was loaded."
2. With the grid focused, Ctrl+Space closes the panel; Ctrl+Space opens it again. Arrow keys move rows and the panel follows.
3. Click into the editor and press Ctrl+Space: the completion list opens and the panel doesn't move.
4. Run two SELECTs.
   • Pick a row in Result 1, then click Result 2: "No row selected". Pick a row there: its fields show.
   • Click Message: "No row selected".
5. Click into a panel field and press Escape: the focus is back in the results grid, and the arrow keys move rows. Click ×: the panel closes, and the focus goes back to the grid.
6. With the panel open, switch to a table tab: it is open there. Close it with Ctrl+Space, go back to the SQL tab: closed. Open it with the toolbar button, go to the table tab: open.
7. In a new SQL tab with no run, the button is greyed. Hover and keyboard focus show the "Row details" tooltip; a click does nothing. Run an UPDATE: still greyed, with no panel. Re-run a SELECT: the panel stays put during the run ("No row selected"), then shows rows to pick.
8. Drag the panel's left edge in a SQL tab: the 240 minimum and the 60 % cap hold, and the width is shared with table tabs.
9. Readability in light and dark: the read-only (greyed) field text, the "Only the start…" note and the search box.

• After switching Result N, Shift+click on a row number selects from that row only (no rows from the previous set).

Checklist

• pnpm test green
• pnpm lint green (tsc; no Rust change, clippy in CI)
• pnpm test:rust green (not applicable: no src-tauri/ change)
• No secret, token, real password or private key in the diff
• User-visible strings in src/lib/strings.ts
• Commits follow <emoji> <type>(<scope>): <description>

🤖 Generated with Claude Code