⚡ Bolt: Gate hero card infinite transition when sleep tracking is inactive

[felixbrucker]

💡 What:

• Conditionally instantiates rememberInfiniteTransition inside ActiveTrackingHeroCard so it is only composed when isTracking is true.
• Defers reading pulseScaleState to the graphicsLayer block to ensure scale reads occur in the draw phase.

🎯 Why:

• Unconditional rememberInfiniteTransition keeps an active frame clock listener registered in Compose's animation subsystem, executing per-frame VSYNC ticks on the main thread even when tracking is idle.

📊 Impact:

• Eliminates 60Hz/120Hz continuous UI frame callbacks when sleep tracking is inactive, conserving battery and reducing CPU wakeups.
• Prevents unnecessary recomposition during active pulse animation by reading scale state in the draw phase.

🔬 Measurement:

• Verified with ./gradlew test and ./gradlew lint.

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PR created automatically by Jules for task 11820235206452634853 started by @felixbrucker

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Coverage Report

Overall Project	51.54%	❌

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