release: prep v0.1.9 changelog

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -10,6 +10,8 @@ changed between versions.
 
 ## [Unreleased]
 
+## [v0.1.9] - 2026-05-01
+
 ### Fixed
 
 - `vm exec` no longer falls back to `cd /root/repo` on VMs that have
@@ -30,6 +32,12 @@ changed between versions.
   has a repo there but no workspace record must now pass
   `--guest-path /root/repo` explicitly.
 
+### Notes
+
+- Internal: smoke-test harness ported from `scripts/smoke.sh` to a
+  Go test suite under `internal/smoketest`. `make smoke` is unchanged
+  for maintainers; no user-visible effect.
+
 ## [v0.1.8] - 2026-05-01
 
 ### Fixed
@@ -294,7 +302,8 @@ root filesystem and network, and exits on demand.
   the swap rather than starting up against an incompatible store.
 - Linux only. amd64 only. KVM required.
 
-[Unreleased]: https://git.thaloco.com/thaloco/banger/compare/v0.1.8...HEAD
+[Unreleased]: https://git.thaloco.com/thaloco/banger/compare/v0.1.9...HEAD
+[v0.1.9]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.9
 [v0.1.8]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.8
 [v0.1.7]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.7
 [v0.1.6]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.6