Add a paginated Python repository package catalog - #1451

On December 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target

Failed to save: Unable to reserve cache with key setup-uv-2-x86_64-unknown-linux-gnu-ubuntu-26.04-3.14.10-pruned-7a0f3179bf504cedacee9c4a6b18557777849a64da6c22732cefdec9074499ec, another job may be creating this cache.

Cache reservation failed: cache write denied: token has no writable scopes