feat(devices): add device management features including listing and revoking devices

[aXenDeveloper]

Improving Documentation

• Run pnpm lint:fix to fix formatting issues before opening the PR.
• Read the Docs Contribution Guide: https://vitnode.com/docs/dev/contribution

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Project	Deployment	Actions	Updated (UTC)
vitnode-docs	Ready	Preview, Comment	Jul 16, 2026 7:36pm

[gemini-code-assist]

Code Review

This pull request introduces a new "Devices" management section in the user settings, allowing users to view their active sessions and revoke specific devices. The implementation includes new API routes, UI components for device listing and revocation, and utility functions for parsing user agent strings. The review feedback suggests improving type safety in the getDevicesApi utility and enhancing error handling in revokeDeviceAction to better propagate API error messages to the client.

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