build.rs resolved the .proto files via a monorepo-relative path and packaging
relied on `cargo publish --no-verify` to hide the resulting failure. Vendor the
three canonical protos into clients/rust/protos/, resolve them via
CARGO_MANIFEST_DIR (in-repo path preferred, vendored fallback for the packaged
crate), ship them via Cargo.toml `include`, and drop `--no-verify` from
pack-clients.ps1.
archreview: CLI-02 (P1). Verified: cargo fmt/check/test (28) + clippy -D warnings,
and `cargo package` (no --no-verify) compiles standalone in the isolated staging
dir — the out-of-repo proof. Vendored-proto drift is guarded by check-codegen.ps1.
Joseph Doherty