[cliffhall]

Closes #2826
Closes #2810

#2826: TUI list rows wrap in narrow terminals

• One line per row. Tools, Resources and Prompts list rows render with wrap="truncate-end", so a long name gets an ellipsis instead of wrapping. The scroll window counts items, so a wrapped row used to push the selected row out of the clipped list box.
• The selection stays visible on resize. useSelectableList now re-clamps the window on every render, not only when the selection moves. Before, shrinking the terminal reduced visibleCount but left a stale firstVisible, which could slice the selected row off the bottom. The clamp is the existing pure clampFirstVisible, run during render.
• Full name in the detail pane; the hint drops below it when space is short. The Tools detail header is now flexWrap="wrap" with the [Enter to Test] hint in its own non-shrinking box. If the name and hint fit on one line they share it, as before. If not, the hint moves to the next line instead of the two overlapping. The Resources and Prompts headers have no inline hint and already showed the full name.
• A tool row's schema-portability marker (! / ?, Feature: Strict JSON Schema validation with actionable error messages in CLI mode #1005) sits outside the truncated text, so the ellipsis never hides it.

#2810: saveResult.queue.test.ts hard-codes POSIX paths

This is a test-only change, as the issue's prompt describes. It adds const inD = (name: string) => resolve("/d", name) and uses it in the four assertions. On POSIX resolve("/d", "a.json") is still "/d/a.json", so nothing changes there. The source is untouched.

Screenshots

These are real pty captures of clients/tui/build/index.js node test-servers/build/test-server-stdio.js at 60×18, after c, t, Tab and seven ↓. The bytes were replayed through @xterm/headless and the final screen was rendered as text.

Before (v2/main): the selected mcp_app_demo is off-screen and the header overlaps its hint.

After: rows are truncated, the selected row is visible, and the hint sits below the full name.

After, short name: the hint stays beside the title when it fits.

After, Resources list:

Tests

• ToolsTab.test.tsx has a new narrow-terminal block with the issue's eight-tool fixture. It covers one-line truncated rows, the selected last row being visible, the selection staying visible after a height shrink, the hint wrapping below a long title, the hint staying beside a short one, and the marker surviving truncation. All five behaviour tests fail on v2/main.
• PromptsTab / ResourcesTab tests check a truncated row plus the full name in the pane.
• A useSelectableList test covers a visibleCount shrink.

🤖 Generated with Claude Code

[Copilot]

🟢 Approval recommended

No active review issues are reported for the terminal-layout and cross-platform test-path changes.

No open issues 🎉

What changed in this PR

This PR fixes narrow-terminal layout issues in the Inspector TUI (#2826) and makes save-queue test assertions portable to Windows (#2810).

Changes:

• Truncates Tools, Resources, and Prompts list rows while preserving tool schema markers and full names in detail panes.
• Re-clamps the scroll window on resize and allows the Tools header hint to wrap below the title.
• Adds layout regression tests and replaces POSIX-only expected paths with node:path.resolve.

File	Description
clients/​tui/​src/​hooks/​useSelectableList.ts	Re-clamps the visible window during render to keep selection visible.
clients/​tui/​src/​components/​ToolsTab.tsx	Truncates rows, preserves schema markers, and wraps the header hint.
clients/​tui/​src/​components/​ResourcesTab.tsx	Truncates resource list rows to one line.
clients/​tui/​src/​components/​PromptsTab.tsx	Truncates prompt list rows to one line.
clients/​tui/​__tests__/​useSelectableList.test.tsx	Covers selection visibility when the window shrinks.
clients/​tui/​__tests__/​ToolsTab.test.tsx	Covers narrow layouts, resizing, header wrapping, and marker visibility.
clients/​tui/​__tests__/​saveResult.queue.test.ts	Builds platform-native expected paths without changing production code.
clients/​tui/​__tests__/​ResourcesTab.test.tsx	Checks truncated rows and full resource names in the detail pane.
clients/​tui/​__tests__/​PromptsTab.test.tsx	Checks truncated rows and full prompt names in the detail pane.

_{Review effort: Balanced}

[cliffhall]

Copilot review loop closed: round 1 came back clean ("No open issues", 0 inline comments, nothing suppressed). Exit: first clean round, so I did not request a confirming round.