feat: extend accent colour to profile selection screen focus borders

[EierKopZA]

feat: Extend accent colour to profile selection screen focus borders

Overview

Replaces hardcoded Color.White focus borders with the user's selected accent colour across all four TV-composable elements on the profile selection screen. Previously the accent colour setting was ignored on this screen despite being respected everywhere else (settings, player chrome, details, search, etc.).

Changes

File:app/src/main/kotlin/com/arflix/tv/ui/screens/profile/ProfileSelectionScreen.kt

Added resolveAccentColor(fallback = Color.White) to each composable and replaced the hardcoded Color.White in the focusedBorder parameter:

Composable	Before	After
ProfileAvatar	Color.White 3dp focus ring	accentColor 3dp focus ring
AddProfileButton	Color.White 3dp focus ring	accentColor 3dp focus ring
ManageProfilesButton	Color.White 2dp focus ring	accentColor 2dp focus ring
CloudConnectButton	Color.White.copy(alpha=0.6f) 2dp focus ring	accentColor.copy(alpha=0.6f) 2dp focus ring

This means D-pad navigation focus rings on the profile picker now respond to the user's Settings → General → Accent Color selection, providing a consistent themed experience across the entire app.

Testing

1. Open Settings → General → Accent Color and select a non-white colour (e.g. Red, Blue, Gold)
2. Navigate to the profile selection screen (switch profile)
3. D-pad through each profile avatar — verify the focus ring matches the selected accent colour
4. Focus the Add Profile button — verify the ring uses the accent colour
5. Focus the Manage Profiles / Done button — verify the ring uses the accent colour
6. Focus the Connect to Cloud button — verify the ring uses the accent colour
7. Reset accent colour to White — verify all rings return to white as expected

[Copilot]

Pull request overview

This PR extends the app’s accent color theming to the TV profile selection screen by replacing hardcoded white focus borders with the currently selected accent color, aligning this screen’s D-pad focus visuals with the rest of the app’s theming.

Changes:

• Added resolveAccentColor(fallback = Color.White) to ProfileAvatar, AddProfileButton, ManageProfilesButton, and CloudConnectButton.
• Updated each composable’s focusedBorderBorderStroke color from Color.White (or Color.White.copy(alpha = …)) to the resolved accent color (preserving the existing alpha usage where applicable).

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