Building cagent v1.36.1 for RISC-V64

[github-actions]

New cagent release detected: v1.36.1

Status: Build automatically triggered

The cagent-weekly-build workflow has been started automatically.
Expected completion time: ~5-10 minutes

About cagent:
Multi-agent AI runtime by Docker Engineering

Monitor build progress:

gh run list --workflow=cagent-weekly-build.yml --limit 1
gh run watch

Expected release: cagent-v1.36.1-riscv64

Upstream release notes: https://github.com/docker/cagent/releases/tag/v1.36.1

This issue will track the build progress. Close it once the release is published.