yiekheng 9b13223966 fix(web): tighten the page-header row — smaller buttons, less padding
Action buttons drop from size=lg with px-6 + font-semibold to a
compact size=sm pill with a subtle shadow. PageShell trims mobile
top padding from 24px to 16px and the inter-section gap from 24px
to 16px on small screens (desktop unchanged) so the header row
doesn't dominate the top of the page when the H1 is hidden.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-10 15:25:08 +08:00
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