Add missing contentDescription to icons across Settings & Rules screens

[vssinghh]

🎯 Summary

Several Icon composables in the Settings and Rules screens currently have contentDescription = null, which makes them invisible to screen readers like TalkBack.

📍 Where to Look

The following files have icons with contentDescription = null that need meaningful descriptions:

• app/src/main/java/com/hush/app/ui/screens/settings/SettingsScreen.kt — 5 instances (lines 141, 212, 292, 460, 524)
• app/src/main/java/com/hush/app/ui/screens/rules/RulesScreen.kt — 2 instances (lines 75, 164)

✅ What to Do

1. Find each contentDescription = null in the files above
2. Replace null with a meaningful string describing the icon's purpose (e.g., "Navigate to settings", "Rule status indicator")
3. Keep descriptions concise and action-oriented

🧪 How to Verify

• Run TalkBack on a connected device and navigate through Settings and Rules screens
• Each icon should be announced with its description

📚 Resources

• Jetpack Compose Accessibility
• Content Description Best Practices

This is a great first contribution — small, well-scoped, and high impact for users who rely on accessibility features! 🙌

[Tesla-J]

Hi, can I work in this issue?

[vssinghh]

Assigned the issue to you. Thank you for contributing!

[gowthambharathn]

Hi! I'd like to work on this issue if it's still available. Could you please assign it to me? Thanks!