ci: switch to commitlint with conventional commits config

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: matiyas

.commitlintrc.yml

@@ -0,0 +1,6 @@
+extends:
+  - "@commitlint/config-conventional"
+
+rules:
+  body-max-line-length: [1, "always", 100]
+  header-max-length: [2, "always", 72]

.github/workflows/commitlint.yml

@@ -1,8 +1,8 @@
-name: Commit Lint
+name: Commitlint
 
 on:
   pull_request:
-    types: [opened, synchronize, reopened, edited]
+    branches: [main]
 
 jobs:
   commitlint:
@@ -11,25 +11,6 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-
-      - name: Validate PR title
-        uses: amannn/action-semantic-pull-request@v5
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - uses: wagoid/commitlint-github-action@v6
         with:
-          types: |
-            feat
-            fix
-            docs
-            style
-            refactor
-            perf
-            test
-            build
-            ci
-            chore
-            revert
-          requireScope: false
-          subjectPattern: ^[a-z].+$
-          subjectPatternError: |
-            The subject "{subject}" must start with a lowercase letter.
+          configFile: .commitlintrc.yml