Upgrade Backstage libraries and migrate to new backend system#187

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Copilot wants to merge 29 commits intomainfrom

copilot/fix-issue-183

Commits on Feb 5, 2026

Downgrade better-sqlite3 to v9 for Docker build compatibility

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Upgrade better-sqlite3 to v12.x and add Docker build dependencies

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Fix 401 authentication errors by disabling default auth policy

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Use proper guest auth provider instead of disabling auth policy

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Add lightweight static token authentication support

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Revert static token auth, keep guest provider only

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Add SignInPage with guest provider per Backstage docs

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Simplify guest provider config per Backstage docs

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Fix Prettier formatting in App.tsx

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Remove SignInPage to fix e2e test

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Add auto sign-in with guest provider to fix 401 errors

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Fix guest provider for CI by enabling dangerouslyAllowOutsideDevelopment

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Commits on Feb 7, 2026

Fix e2e test to wait for sign-in before reload

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Commits on Feb 9, 2026

Click Enter button in e2e test instead of using timeouts

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