[berlin-566]

Overview

Transforms ambient edge lighting into authentic Lumn-style ambient rim lighting (inspired by trylumn.xyz and macOS ambient rim aesthetics) with universal browser/system audio reactivity, dual-tone wave drift, and bezel stabilization:

1. Authentic Lumn Dual-Pass Ambient Glow

• Zero Solid Lines / Borders: Completely eliminated static ShapePath geometries, opaque strokes, and stacked MultiEffect brighteners that caused thick glitchy white lines or frozen borders.
• Pass 1 (Atmospheric Bloom Spill): Deep inward-diffusing gradient wash spilling 20px–60px into screen margins.
• Pass 2 (Luminous Radiant Core): Rich, vibrant core luminescence hugging the screen perimeter with zero sharp borders.
• 4-Corner Seamless Radial Blends: Hardware-accelerated radial diffusers at all four corners eliminate seams and blend curves organically.

2. Universal Browser & System Audio Reactivity

• PipeWire / PulseAudio Integration: Configured cava.conf with [input] method = pulse, source = auto to capture all system audio streams (YouTube, Chrome, Firefox, Brave, Spotify, games, etc.).
• Live Spectrum Monitoring: Updated CavaService.qml to keep Cava active whenever edge lighting is enabled (SettingsService.edgeLightingEnabled), reacting instantly when browser playback starts.
• Sub-Bass Energy Punch: Low-frequency spectrum analysis (bars 0..11) powers real-time inward bloom expansion and brightness pulsing with 40ms snappy attack and 280ms velvety organic decay.
• Ethereal Idle Breathing: Sinusoidal breathing oscillation (idleGlow) keeps the display edges calmly alive when music is paused.

3. Continuous Dual-Tone Wave Drift

• Smooth Perimeter Rotation: Dual-tone color palette (Primary 60% / Secondary 40% from album art or custom choice) smoothly drifts around the perimeter at native display refresh rates (60/120/144 FPS).
• Direction & Speed Modulation: Seamlessly respects SettingsService.edgeLightingDirection (Clockwise / Counter-Clockwise) and SettingsService.edgeLightingSpeed.

4. Bezel Stabilization & Layering

• Fixed bezel frame (shellFrameContainer.bezelSize) and input region mask at the standard 8px bezel.
• Anchored edge lighting to display bounds at z: 9 directly behind the bezel, ensuring clean masking along bezel curves with 100% click-through for windows beneath.