- Dependency: rnet>=3.0.0rc22,<4 -> wreq>=0.10.2,<0.11
- All imports: from rnet -> from wreq across 12 source + 6 test files
- Rename docs/ref-rnet.md -> docs/ref-wreq.md
- Update llms.txt, README.md, CLAUDE.md references
- Add migration notice for users upgrading from rnet
- Tighten version pin to <0.11 (pre-1.0 semver caution)