fix(release): Restore yaml runtime dependency

Move yaml into runtime dependencies so the published npm installer
works in clean npx environments again. Bump the package to 9.5.1,
add the patch release notes, and keep README metadata aligned with
the release state.

Fixes #445

CHANGELOG.md

@@ -9,6 +9,26 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [9.5.1] - 2026-04-03 - "npm Runtime Dependency Fix"
+
+> **Patch release to restore `npx antigravity-awesome-skills` installs after the published CLI started failing to resolve `yaml` at runtime**
+
+This release fixes a packaging regression in `9.5.0`. The installer entrypoint loads `tools/lib/skill-utils.js`, which depends on `yaml`, but the published npm package declared that module only as a development dependency. In clean `npx` environments this caused the installer to crash immediately with `Error: Cannot find module 'yaml'`, as reported in issue `#445`.
+
+## New Skills
+
+- **None in this release** — `9.5.1` is a focused patch release for the published npm installer.
+
+## Improvements
+
+- **Runtime dependency fix**: moved `yaml` from `devDependencies` to runtime `dependencies` so the published CLI bundle installs everything required by `tools/bin/install.js` and `tools/lib/skill-utils.js`.
+- **Packaging regression coverage**: extended the npm package contents test to assert that `yaml` remains declared as a runtime dependency for the installer contract.
+- **Installer verification**: re-ran the package dry-run and installer-focused tests to confirm the published artifact and filtered install flow no longer reproduce the missing-module failure from issue `#445`.
+
+## Credits
+
+- **Issue #445 reporter** for isolating the `yaml` packaging regression in the published npm CLI artifact.
+
 ## [9.5.0] - 2026-04-03 - "Selective Installs and 30K Stars"
 
 > Installable skill library update for Claude Code, Cursor, Codex CLI, Gemini CLI, Antigravity, OpenCode, and related AI coding assistants.