fix(ci): exclude CHANGELOG.md from markdown lint and spell check (#69)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: ryzizub

.github/workflows/ci.yaml

@@ -14,7 +14,9 @@ jobs:
       - name: Lint Markdown
         uses: DavidAnson/markdownlint-cli2-action@v23
         with:
-          globs: '**/*.md'
+          globs: |
+            **/*.md
+            !CHANGELOG.md
           config: 'config/custom.markdownlint.jsonc'
   spelling:
     name: ✍️ Spelling Check
@@ -24,7 +26,9 @@ jobs:
       - name: Spell Check Code
         uses: streetsidesoftware/cspell-action@v8
         with:
-          files: '**/*.md'
+          files: |
+            **/*.md
+            !CHANGELOG.md
           config: 'config/cspell.json'
   detect-changed-skills:
     name: 🔎 Detect Changed Skills