feat: PR title check action

pr-title-check/README.md

@@ -0,0 +1,29 @@
+# `pr-title-check` GitHub Action
+
+This action validates pull request titles by checking them for typos (using [typos](https://github.com/crate-ci/typos)) and verifying they follow the [Conventional Commits](https://www.conventionalcommits.org/) format (using [action-semantic-pull-request](https://github.com/amannn/action-semantic-pull-request)).
+
+The action checks out the repository so that any `_typos.toml` configuration present in the repo is respected.
+
+## Usage
+
+```yaml
+name: CI (PR)
+
+on:
+  pull_request:
+
+permissions:
+  contents: read
+  pull-requests: read
+
+jobs:
+  pr-title-check:
+    name: PR title check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: apify/actions/pr-title-check@main
+```
+
+### Inputs
+
+- `github-token` (optional, default `${{ github.token }}`) — Token used by the semantic PR title check to read PR metadata via the GitHub API.

pr-title-check/action.yaml

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+name: "PR title check"
+description: "Check PR title for typos and conventional commit format"
+
+inputs:
+  github-token:
+    description: "GitHub token for the semantic PR title check"
+    required: false
+    default: ${{ github.token }}
+
+runs:
+  using: "composite"
+  steps:
+    # Needed to access `_typos.toml` from the repository
+    - uses: actions/checkout@v4
+
+    - name: Write PR title to file
+      shell: bash
+      run: echo "$PR_TITLE" > /tmp/pr-title.txt
+      env:
+        PR_TITLE: ${{ github.event.pull_request.title }}
+
+    - name: Spell-check PR title
+      uses: crate-ci/typos@master
+      with:
+        files: /tmp/pr-title.txt
+
+    - name: Check PR title follows conventional commits
+      uses: amannn/action-semantic-pull-request@v6.1.1
+      env:
+        GITHUB_TOKEN: ${{ inputs.github-token }}