⚡ Bolt: Tighten TimelineView scope in RunningView

[google-labs-jules]

💡 What: Scoped TimelineView only around the CountdownRing component in RunningView.
🎯 Why: Wrapping static views in TimelineView forces unnecessary re-evaluation on every tick, causing performance overhead.
📊 Impact: Eliminates redundant layout and render passes for static siblings on every second tick.
🔬 Measurement: Profile the SwiftUI view re-renders using Instruments to verify the static views no longer invalidate.

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PR created automatically by Jules for task 15318310011052470791 started by @TytaniumDev

[google-labs-jules]

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