- Complete removal of completePendingOAuthBinding logic to prevent unintended account takeovers (AUTH-ROUTE-1).
- Add strict OIDC policy checks (global switch and source active states) across authorization and callback paths (AUTH-POLICY-1).
- Fix OIDC test cases to properly clear the Redis-backed system config cache using composite keys.
Bind OAuth state payloads to the initiating session token and user ID.
Verifies session token hash continuity during callback, and validates that
the user ID completing the binding flow matches the user ID that initiated it.
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