🤖 This PR was written by Coder Agents on behalf of Jake Howell.

Resolves DEVEX-721.

Cap the overflow menu height and let it scroll, matching the existing pattern already used by DownloadSelectedAgentLogsButton (max-h-56 overflow-y-auto). No component swap needed, the DropdownMenu was the right primitive, it just lacked height/scroll constraints.

-<DropdownMenuContent align="end">
+<DropdownMenuContent align="end" className="max-h-56 overflow-y-auto">

• The "logs selector per startup script" is the overflow kebab menu in site/src/modules/resources/AgentRow.tsx. When per-script log tabs don't fit horizontally, useKebabMenu moves the extras into a Radix DropdownMenu rendered as DropdownMenuRadioItems.
• menuContentClass (site/src/components/DropdownMenu/menuClasses.ts) is z-50 min-w-48 overflow-hidden ... with no max-height, so an overlong menu is clipped instead of scrolling.
• DownloadSelectedAgentLogsButton.tsx already solves the identical problem on its own menu with className="max-h-56 overflow-y-auto", so we reused that for consistency.
• Considered switching to the Select component (which has SelectScrollUpButton/SelectScrollDownButton chevrons) but that's a larger re-model of the trigger + items and reconciliation with the Tabs/useKebabMenu wiring. Deferred in favor of the minimal fix.