feat: complete native execution and Steam discovery

docs/phase-0/status.md

@@ -31,13 +31,10 @@ cargo run --locked -p kiln-cli -- doctor --json | jq -e \
   '.schema_version == 1 and .status == "ok" and .private_placeholder == true'
 ```
 
-The exact-toolchain gate, canonical AGPL license, dependency-free static audits, and
-cargo-deny 0.20.2 advisory/bans/licenses/sources audit all pass. Phase 0 is closed.
-A first hosted CI run remains required before accepting external changes or claiming
-enforced CI, but does not block private Phase 1 contract design.
+The exact-toolchain gate, canonical AGPL license, static audits, and cargo-deny 0.20.2
+advisory/bans/licenses/sources audit all pass. Phase 0 is closed. Local `make check`
+replaces the unused hosted workflow as the authoritative gate.
 
-`rust-version = "1.85"` records the minimum supported compiler for Edition 2024. The
-exact reviewed development and CI toolchain remains pinned separately to Rust 1.97.1 in
-`rust-toolchain.toml`; these controls must not be conflated. `make verify` explicitly
-checks the active `rustc` version because distro-provided Rust binaries may ignore the
-Rustup override file.
+`rust-version = "1.97.1"` and `rust-toolchain.toml` deliberately name the same minimum
+and reviewed local compiler. `make verify` checks the active `rustc` version before the
+Rust quality gates.