- Apply shared button utility classes across PluginManager action controls for consistent dashboard styling
- Move PluginManager mobile responsive overrides into PluginManager.css and update code background fallback to token-based color-mix
- Improve PiExtensionsManager remove controls with touch-target sizing, hover feedback, and descriptive aria-labels
- Stabilize ModelOnboardingModal helper-text assertions by waiting for provider fetch/render state before checking visibility
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