refactor: component architecture, real CPU temp, perf limiter
- Modular architecture: main.qml orchestrator + CompactView, FullView,
TemperatureDisplay, PerfLimiter components + CpuReader/CpuWriter logic
- Fix temperature: dynamic thermal zone detection (x86_pkg_temp/TCPU)
instead of hardcoded thermal_zone0 (was showing 27°C instead of real)
- Add CPU % limiter with -5/+5 buttons via intel_pstate max_perf_pct
- Remove profile switching (already in Kubuntu by default)
- Add polkit policy + helper script for passwordless perf writes
- Add 67 unit tests for all backend logic
- Apple-inspired UI: clean, minimal, color-coded temperature
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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