[Fix] UI - Redirect to ui/login on expired JWT

[yuneng-jiang]

Relevant issues

This PR implements checking for expired JWT when the user reaches the UI. Previously expiry was not checked, and it allowed expired sessions to stay inside authenticated routes until the user clicked logout

Pre-Submission checklist

Please complete all items before asking a LiteLLM maintainer to review your PR

• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• My PR passes all unit tests on make test-unit
• My PR's scope is as isolated as possible, it only solves 1 specific problem

CI (LiteLLM team)

CI status guideline:

• 50-55 passing tests: main is stable with minor issues.
• 45-49 passing tests: acceptable but needs attention
• <= 40 passing tests: unstable; be careful with your merges and assess the risk.

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Type

🐛 Bug Fix
✅ Test

Changes

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Project	Deployment	Review	Updated (UTC)
litellm	Ready	Preview, Comment	Jan 24, 2026 2:07am