Summary

• add main-process handling for tab-number jumps: Ctrl+1-9 on macOS, Alt+1-9 on Windows/Linux
• forward the shortcut through main, browser guests, preload, and renderer IPC
• activate the Nth tab in the current active split group using the rendered tab order

Scope

• Addresses the tab-number jump portion of [Feature]: Number-jump and inline-rename shortcuts for tabs & workspaces #3163. Rename shortcuts remain for a follow-up because Cmd+R / Cmd+Shift+R overlap with browser reload and force-reload behavior and need a keybinding/default decision.

Validation

• pnpm exec vitest run --config config/vitest.config.ts src/shared/window-shortcut-policy.test.ts src/renderer/src/lib/tab-number-shortcuts.test.ts src/main/window/createMainWindow.test.ts
• pnpm run typecheck
• pnpm run lint
• git diff --check
• git merge-tree --write-tree origin/main HEAD

Risk assessment

Risk: HIGH

Historic risk metadata backfill based on the existing risk:high label.

Risk: high

Historic risk metadata backfill based on the existing risk:high label.