chore: Claude PR Assistant workflow (#13)

* "Claude PR Assistant workflow"

* chore: Update Claude workflow configuration

Author: edenreich

.github/workflows/claude.yml

@@ -0,0 +1,61 @@
+---
+name: Claude Code
+
+on:
+  issue_comment:
+    types:
+      - created
+  pull_request_review_comment:
+    types:
+      - created
+  issues:
+    types:
+      - opened
+      - assigned
+  pull_request_review:
+    types:
+      - submitted
+
+jobs:
+  claude:
+    if: |
+      (github.event_name == 'issue_comment' && contains(github.event.comment.body, '@claude') && !contains(github.event.comment.body, '@claude /review')) ||
+      (github.event_name == 'pull_request_review_comment' && contains(github.event.comment.body, '@claude') && !contains(github.event.comment.body, '@claude /review')) ||
+      (github.event_name == 'pull_request_review' && contains(github.event.review.body, '@claude') && !contains(github.event.review.body, '@claude /review')) ||
+      (github.event_name == 'issues' && (contains(github.event.issue.body, '@claude') || contains(github.event.issue.title, '@claude')))
+    runs-on: ubuntu-24.04
+    permissions:
+      contents: write
+      pull-requests: write
+      issues: write
+      id-token: write
+      actions: read
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 1
+
+      - name: Install Rust toolchain
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          components: clippy, rustfmt
+
+      - name: Install task
+        run: |
+          curl -s https://taskfile.dev/install.sh | sh -s -- -b /usr/local/bin v3.45.4
+
+      - name: Run Claude Code
+        id: claude
+        uses: anthropics/claude-code-action@main
+        with:
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          additional_permissions: |
+            actions: read
+          use_commit_signing: true
+          base_branch: main
+          branch_prefix: 'claude/'
+          claude_args: |
+            --system-prompt "IMPORTANT: You must NEVER push directly to the main branch. Always: 1. Create a new feature branch (claude/feature-name), 2. Make your changes on the feature branch, 3. Open a pull request to main. COMMIT MESSAGE FORMAT: Always use conventional commits with capital letters. Follow the format: 'type(scope): Description' where the description starts with a capital letter. Examples: 'feat(grafana): Add retry mechanism for agent connections', 'fix(auth): Resolve token validation issue'. Follow the development workflow specified in the coding instructions."
+            --allowedTools "Bash(task:*),Bash(go:*),Bash(gh:*),Bash(git:*)"
+            --mcp-config '{"mcpServers":{"context7":{"command":"npx","args":["-y","@upstash/context7-mcp@latest"]}}}'