CHANGELOG: v0.1.1 release notes

Captures the install.sh + BANGER_INSTALL_NONINTERACTIVE changes
that landed in 1004331 and 3c29af5. v0.1.1 is being cut now to
exercise the self-update path against a real released second
version — `banger update` has never run live before, only against
unit-test fixtures, so this release doubles as the smoke test of
the update flow.

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

CHANGELOG.md

@@ -10,6 +10,19 @@ changed between versions.
 
 ## [Unreleased]
 
+## [v0.1.1] - 2026-04-29
+
+### Added
+
+- `install.sh` — one-command installer published at
+  `https://releases.thaloco.com/banger/install.sh`. Runs as the
+  invoking user, downloads + verifies the latest signed release with
+  the embedded cosign public key, and re-execs `sudo` only for the
+  actual system-install step. Pre-sudo summary explains in plain
+  language why elevation is needed.
+- `BANGER_INSTALL_NONINTERACTIVE=1` env var on `install.sh` for
+  non-interactive use through `curl | bash` (CI, automated provisioning).
+
 ## [v0.1.0] - 2026-04-29
 
 First public release. banger runs disposable development sandboxes as
@@ -112,5 +125,6 @@ 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/v0.1.0...HEAD
+[Unreleased]: https://git.thaloco.com/thaloco/banger/compare/v0.1.1...HEAD
+[v0.1.1]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.1
 [v0.1.0]: https://git.thaloco.com/thaloco/banger/releases/tag/v0.1.0