Add GitHub Actions naming

src/internals/023-github-actions.md

@@ -0,0 +1,32 @@
+# 023 — GitHub Actions
+
+This document defines naming convention for the GitHub actions configuration files.
+
+## Inputs and Outputs
+
+Input names and output names must use kebab-case format.
+
+For example:
+
+```yaml
+inputs:
+  my-input:
+    description: 'My input'
+```
+
+## Secrets and Environment Variables
+
+Secret names and environment variable names must use SCREAMING_SNAKE_CASE format.
+
+For example:
+
+```yaml
+secrets:
+  MY_SECRET:
+    description: 'My secret'
+```
+
+```yaml
+env:
+  MY_ENV_VAR: 1
+```

src/internals/index.md

@@ -28,3 +28,4 @@ It covers guidelines, workflows, and best practices for maintaining and developi
 - [020 — Package release](020-package-release.md) - Release process for packages
 - [021 — Changelog and upgrade](021-changelog-upgrade.md) - Maintaining changelogs and upgrade notes
 - [022 — Config groups](022-config-groups.md) - Configuration group organization
+- [023 - GitHub Actions](023-github-actions.md) - GitHub actions configuration