Add workflow templates for code and security reviews

- Add Claude code review workflows (custom and standard)
- Add pragmatic code review slash command and subagent
- Add security review slash command
- Add security workflow template

code-review/claude-code-review.yml

@@ -0,0 +1,75 @@
+name: Claude Code Review
+
+on:
+  pull_request:
+    types: [opened, synchronize, ready_for_review, reopened]
+
+jobs:
+  claude-review:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: read
+      id-token: write
+    
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Run Claude Code Review
+        id: claude-review
+        uses: anthropics/claude-code-action@v1
+        with:
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          # or: claude-api-key: ${{ secrets.CLAUDE_API_KEY }}
+          # When track_progress is enabled:
+          # - Creates a tracking comment with progress checkboxes
+          # - Includes all PR context (comments, attachments, images)
+          # - Updates progress as the review proceeds
+          # - Marks as completed when done
+          track_progress: true
+          prompt: |
+            REPO: ${{ github.repository }}
+            PR NUMBER: ${{ github.event.pull_request.number }}
+
+            Perform a comprehensive code review with the following focus areas:
+
+            1. **Code Quality**
+               - Clean code principles and best practices
+               - Proper error handling and edge cases
+               - Code readability and maintainability
+
+            2. **Security**
+               - Check for potential security vulnerabilities
+               - Validate input sanitization
+               - Review authentication/authorization logic
+
+            3. **Performance**
+               - Identify potential performance bottlenecks
+               - Review database queries for efficiency
+               - Check for memory leaks or resource issues
+
+            4. **Testing**
+               - Verify adequate test coverage
+               - Review test quality and edge cases
+               - Check for missing test scenarios
+
+            5. **Documentation**
+               - Ensure code is properly documented
+               - Verify README updates for new features
+               - Check API documentation accuracy
+
+            Provide detailed feedback using inline comments for specific issues.
+            Use top-level comments for general observations or praise.
+            
+            Use the repository's CLAUDE.md for guidance on style and conventions. Be constructive and helpful in your feedback.
+
+            Use `gh pr comment` with your Bash tool to leave your review as a comment on the PR.
+          
+          # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
+          # or https://docs.anthropic.com/en/docs/claude-code/sdk#command-line for available options
+          claude_args: '--model claude-opus-4-1-20250805 --allowed-tools "mcp__github_inline_comment__create_inline_comment,Bash(gh issue view:*),Bash(gh search:*),Bash(gh issue list:*),Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*),Bash(gh pr list:*)"'
+