feat: Improve UI and theme handling

This commit introduces several UI and theming enhancements:

- Adds labels to the "Dark theme" and "Dynamic theme" switches for better clarity.
- Implements dynamic status bar icon colors to match the current theme (light/dark), improving system integration.
- Enhances the color grid items by:
    - Automatically calculating and applying a contrasting content color (text and border) for better readability against the background color.
    - Displaying the hex code of the color.
- Bumps the Compose BOM version to `2025.12.00`.

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ kotlin = "2.2.0"
 coreKtx = "1.16.0"
 lifecycleRuntimeKtx = "2.9.1"
 activityCompose = "1.10.1"
-composeBom = "2025.06.01"
+composeBom = "2025.12.00"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }