Update README with yank, project status, and provenance docs

Implement PEP 740 index-hosted attestations (provenance)

Implement PEP 792 project status markers

Fix yanked field to match JSON Simple API spec

Implement PEP 592 file yanking support

Implement duplicate filename check in package upload

Add README.md for Pripy package registry

Fix missing newline at end of wrangler.jsonc file

Refactor package upload to use streaming for hash computation

Fix version separator in test for local builds to conform with PEP 440 normalization

Implement PEP 440 version normalization and enhance version extraction

Enhance authentication handling in package management

Add R2 bucket integration and package management features

Initial commit (by create-cloudflare CLI)