docs: update changelogs and clarify lockstep versioning in AGENTS.md

AGENTS.md

@@ -77,13 +77,20 @@ Use these sections under `## [Unreleased]`:
 
 ## Releasing
 
+**Lockstep versioning**: All packages always share the same version number. Every release updates all packages together.
+
+**Version semantics** (no major releases):
+- `patch`: Bug fixes and new features
+- `minor`: API breaking changes
+
+### Steps
+
 1. **Update CHANGELOGs**: Ensure all changes since last release are documented in the `[Unreleased]` section of each affected package's CHANGELOG.md
 
 2. **Run release script**:
    ```bash
-   npm run release:patch    # Bug fixes
-   npm run release:minor    # New features
-   npm run release:major    # Breaking changes
+   npm run release:patch    # Fixes and additions
+   npm run release:minor    # API breaking changes
    ```
 
 The script handles: version bump, CHANGELOG finalization, commit, tag, publish, and adding new `[Unreleased]` sections.