Versions-bump from 0.1.0 to 0.1.1 in csproj. Extend Anvil.yaml
changelog with the v0.1.1 block; the v0.1.0 entry stays below as
release history.
Add repo.json (Custom-Repo manifest, AssemblyVersion 0.1.1.0,
download links pointing at the v0.1.1 release tag) and CHANGELOG.md
(root-level history file with v0.1.1 hotfix notes and the v0.1.0
foundation block).
This is the scaffolding commit for the Module 01 spec-sync hotfix
cycle. The five spec-edit commits (A1, A2, A3, A4, A5) follow.
