fix(ci): remove version requirement from skill validation

Skills no longer have version fields (removed in 8521d81), so the
workflow was checking for something that doesn't exist.

- Remove version from required skill frontmatter fields
- Remove version matching check against plugin.json
- Remove instruction to read plugin.json (no longer needed)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: sjnims

.github/workflows/component-validation.yml

@@ -85,9 +85,8 @@ jobs:
 
             ## Instructions
 
-            1. First, read the plugin version from `plugins/plugin-dev/.claude-plugin/plugin.json` (needed for skill version validation)
-            2. Read and validate ONLY the changed files listed above
-            3. Return structured JSON with validation results
+            1. Read and validate ONLY the changed files listed above
+            2. Return structured JSON with validation results
 
             ## Validation Rules
 
@@ -108,9 +107,8 @@ jobs:
             ### Skills (`plugins/plugin-dev/skills/*/SKILL.md`)
 
             For each changed skill SKILL.md file, verify:
-            - [ ] YAML frontmatter exists with `name`, `description`, `version` fields
+            - [ ] YAML frontmatter exists with `name`, `description` fields
             - [ ] `description` uses third-person with trigger phrases (starts with "This skill should be used when...")
-            - [ ] `version` matches the plugin.json version
             - [ ] Body length is reasonable (core concepts, not exhaustive documentation)
 
             ### Agents (`plugins/plugin-dev/agents/*.md`)