Summary

• enable touch-driven session tab reordering with a larger activation threshold
• keep vertical tab reordering inside the mobile drawer instead of navigating and dismissing it
• make tab context menus non-modal so an outside touch closes the menu
• add real mobile/touch regression coverage for both reported interactions

Verification

• PLAYWRIGHT_BASE_URL=http://127.0.0.1:3444 bun x playwright test e2e/regression/mobile-tab-interactions.spec.ts --project=chromium --workers=1 — 2 passed
• bun typecheck (packages/app) — passed
• bun test --conditions=solid --preload ./happydom.ts ./src/shell/titlebar/tab-gesture.test.ts — 3 passed
• Prettier and oxlint on changed files — passed
• Existing mobile-shell.spec.ts scenarios passed before an unrelated session-rename.spec.ts fixture setup timeout; typecheck:e2e remains blocked by three pre-existing errors in terminal/timeline/session-queue tests.

Reported in: https://x.com/ericc__ch/status/2101282196229332996

Requested by: @Brendonovich (Brendan via Slack)