Polish shell spacing and scrollbar styling

[BotCoder254]

Adjust the AppShell canvas wrapper to keep visible padding on all sides at large breakpoints, so the floating canvas stays visually separated from the sidebar too. Add global themed scrollbar styles (Firefox + WebKit) to align scroll regions with the app palette, including hover states and transparent tracks/corners.

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Project	Deployment	Actions	Updated (UTC)
overup	Building	Preview, Comment	Jul 18, 2026 8:01am

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: dffc1bbe-2982-4443-b9cb-daa996538492

📥 Commits

Reviewing files that changed from the base of the PR and between 67c7ae0 and c52996a.

📒 Files selected for processing (2)

• src/components/layout/AppShell.tsx
• src/index.css

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• Commit unit tests in branch feat/event-driven-orchestration

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[amazon-q-developer]

The changes correctly implement the intended shell spacing adjustment and themed scrollbar styling. The removal of lg:pl-0 properly adds left padding at large breakpoints, and the global scrollbar styles use standard CSS properties with appropriate browser prefixes. No blocking defects identified.

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