Session drawer has no focus trap, no Escape-to-close, and no aria-label

[aasis21]

Problem

The drawer (<aside class="drawer">, a complementary region) opens without moving focus into it, doesn't trap Tab focus (you can tab onto hidden background content), can't be closed with Escape, and has no accessible name. The scrim is a plain <div>.

Suggested fix

On open: set an aria-label, move focus into the drawer, trap focus while open, close on Escape, and restore focus to the trigger on close.

Where

mobile/src/components/SessionDrawer.tsx.

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Filed from a UI research sweep of the Helm mobile app (landing + live demo session) using Playwright + full source review, cross-referenced against Claude, ChatGPT, GitHub Copilot Chat, and Codex/Claude Code UIs.

[aasis21]

Fixed on \main\ in commit 4262060 as part of the P1 UI sweep (wave 1). This issue was implemented but not auto-closed because GitHub only honors the closing keyword before the first issue in a multi-issue \Closes\ line.