The Run dropdown scroll browser test built WebServer on the fixed port 3290,
which the static port guard (test/test-ports-guard.test.ts, from #556) rejects
for any file outside its shrink-only legacy list, so the CI gate failed on the
landing branch. The test now binds an ephemeral port with new WebServer(0, ...)
and navigates to server.boundPort, and its header records the new convention.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The menu opens upward (bottom: 100%) with no max-height or overflow, so with the stock CLIs plus custom endpoint entries it was taller than the room above the toolbar and its top was off-screen and unreachable, worst on phones. Cap it to the space between the header and the toolbar (dvh, vh fallback), scroll inside it with overscroll containment, and stop its overflow:auto children (history, saved URLs) being squashed.
Tests: a CI-gate source guard and a real mobile-browser test (touch swipe reaches the last entry), which fails without the CSS.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JrzFKEdBLwVfu6ev2ZscJS
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