Changelog for v0.16.0 (#549)

```markdown
## v0.16.0 - 2026-08-19

### Improvements

- [language-host] Print `required_providers` usage instructions after `pulumi package add` and `pulumi install` [#560](#560)

### Bug Fixes

- [runtime] Return a diagnostic instead of panicking when a `for_each` set contains a null element [#548](#548)

- [runtime] Return a diagnostic instead of panicking when a `count` meta-argument is null [#550](#550)

- [runtime] Stop panicking on an unknown `prevent_destroy` and refuse a known-null one at destroy [#551](#551)

- [runtime] Stop panicking on a marked or unknown discriminated-union discriminator [#552](#552)

- [runtime] Preserve resource dependencies referenced by provider configuration properties [#555](#555)

- [runtime] Handle null resource `aliases` [#556](#556)
```

---

Merging this PR to `master` will trigger
`.github/workflows/release.yml`, which:

- creates the `v0.16.0` git tag
- publishes the GitHub release with notes from `.changes/v0.16.0.md`
- builds and uploads binaries (`pulumi-language-hcl`,
`pulumi-converter-hcl`, `pulumi-resource-hcl`) for `{darwin, linux,
windows} × {amd64, arm64}`

Automated release PR generated by
`.github/workflows/maintain-release-pr.yml`.

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: pulumi-bot

.changes/unreleased/language-host-improvements-560.yaml

@@ -0,0 +1,20 @@
+## v0.16.0 - 2026-08-19
+
+### Improvements
+
+- [language-host] Print `required_providers` usage instructions after `pulumi package add` and `pulumi install` [#560](https://github.com/pulumi/pulumi-hcl/pull/560)
+
+### Bug Fixes
+
+- [runtime] Return a diagnostic instead of panicking when a `for_each` set contains a null element [#548](https://github.com/pulumi/pulumi-hcl/pull/548)
+
+- [runtime] Return a diagnostic instead of panicking when a `count` meta-argument is null [#550](https://github.com/pulumi/pulumi-hcl/pull/550)
+
+- [runtime] Stop panicking on an unknown `prevent_destroy` and refuse a known-null one at destroy [#551](https://github.com/pulumi/pulumi-hcl/pull/551)
+
+- [runtime] Stop panicking on a marked or unknown discriminated-union discriminator [#552](https://github.com/pulumi/pulumi-hcl/pull/552)
+
+- [runtime] Preserve resource dependencies referenced by provider configuration properties [#555](https://github.com/pulumi/pulumi-hcl/pull/555)
+
+- [runtime] Handle null resource `aliases` [#556](https://github.com/pulumi/pulumi-hcl/pull/556)
+

.changes/unreleased/runtime-bug-fixes-548.yaml

@@ -5,6 +5,26 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
 and is generated by [Changie](https://github.com/miniscruff/changie).
 
+## v0.16.0 - 2026-08-19
+
+### Improvements
+
+- [language-host] Print `required_providers` usage instructions after `pulumi package add` and `pulumi install` [#560](https://github.com/pulumi/pulumi-hcl/pull/560)
+
+### Bug Fixes
+
+- [runtime] Return a diagnostic instead of panicking when a `for_each` set contains a null element [#548](https://github.com/pulumi/pulumi-hcl/pull/548)
+
+- [runtime] Return a diagnostic instead of panicking when a `count` meta-argument is null [#550](https://github.com/pulumi/pulumi-hcl/pull/550)
+
+- [runtime] Stop panicking on an unknown `prevent_destroy` and refuse a known-null one at destroy [#551](https://github.com/pulumi/pulumi-hcl/pull/551)
+
+- [runtime] Stop panicking on a marked or unknown discriminated-union discriminator [#552](https://github.com/pulumi/pulumi-hcl/pull/552)
+
+- [runtime] Preserve resource dependencies referenced by provider configuration properties [#555](https://github.com/pulumi/pulumi-hcl/pull/555)
+
+- [runtime] Handle null resource `aliases` [#556](https://github.com/pulumi/pulumi-hcl/pull/556)
+
 ## v0.15.0 - 2026-08-12
 
 ### Improvements