[berlin-566]

Summary of Changes

1. Wi-Fi Reliability & Connection Fixes

• Added saved NetworkManager connection profile activation (nmcli connection up id <ssid>) prior to raw device connect attempts in crates/agility-cli and crates/agilityd.
• Added support for forced rescan (scan yes) using nmcli device wifi rescan.
• Improved error messaging and fallback handling when connecting or disconnecting networks.

2. Bluetooth Disabled by Default on Startup

• Added bluetoothOnStartup boolean setting (defaults to false) in SettingsService.qml.
• Configured CLI (agl start), daemon (agilityd), and QML startup lifecycle to ensure the Bluetooth adapter is powered off by default on startup.
• Added a user toggle under Settings -> Hardware & Connectivity allowing users to opt into automatic Bluetooth startup if desired.

3. Floating Pill Bar Thickness Slider & Proportional Widget Scaling

• Added pillBarThickness setting (range 26px to 52px, default 38px) in SettingsService.qml and a slider under Settings -> Bar -> Pill Bar Customization.
• Connected BarStyleConfig.barHeight('pill') to SettingsService.pillBarThickness.
• Computed barWidgetHeight dynamically (Math.round(pillBarThickness - 10)) so all bar applets, buttons, and system tray delegates proportionally adjust their height and padding without clipping.

4. True Centering of Date, Time & Weather in Pill Bar

• Restructured PillBar.qml layout so that centerGroup (Clock, Date, Weather, Media) is mathematically anchored to the horizontal center of the pill container.
• Left and Right groups no longer displace the center clock/weather group regardless of their individual widths or widget counts.

5. Bar Icon with Material 3 Expressive Shapes & Morph Animations

• Added a gallery of Google Material 3 expressive vector shapes (dashboard, sparkle, flower, scallop, hexagon, arch, gem) and custom SVG path support in AnimatedMinflair.qml.
• Added dynamic morphing animation with spring overshoot (Easing.OutBack) and smooth rotation when switching shapes.
• Added automatic shape cycling timer based on configurable barIconCycleInterval (3s - 60s).
• Added complete Bar Icon management section in Bar Settings supporting Mode selection (Cycle Shapes, Single Shape, Custom SVG), multi-select shape toggle chips, interval slider, and custom SVG input.