[harryisfish]

Summary

• Replace the stacked menu buttons with grouped Charge and Fans cards, a large charge readout, and equal-width choices.
• Keep the same daemon commands and accessibility identifiers. Selected maintain and fan profile use the prominent button style instead of a checkmark prefix.
• Drop the one-percent slider ticks so the charge limit reads as a single control.

Test plan

• swift test — 24 tests passed
• Relaunched SMCtlMenuBar.app and checked the open panel: cards, slider, selected Off / Auto
• CI on this PR is green

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