chore: bump Claude Code version to 2.0.13

* docs: add prompt injection security note

Add warning about potential hidden markdown in untrusted content from external contributors. Documents existing sanitization measures while acknowledging new bypass techniques may emerge.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

* Update docs/security.md

Co-authored-by: David Dworken <dworken@anthropic.com>

* format

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: David Dworken <dworken@anthropic.com>

action.yml

@@ -177,7 +177,7 @@ runs:
         # Install Claude Code if no custom executable is provided
         if [ -z "${{ inputs.path_to_claude_code_executable }}" ]; then
           echo "Installing Claude Code..."
-          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.2
+          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.13
           echo "$HOME/.local/bin" >> "$GITHUB_PATH"
         else
           echo "Using custom Claude Code executable: ${{ inputs.path_to_claude_code_executable }}"

base-action/action.yml

@@ -99,7 +99,7 @@ runs:
       run: |
         if [ -z "${{ inputs.path_to_claude_code_executable }}" ]; then
           echo "Installing Claude Code..."
-          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.2
+          curl -fsSL https://claude.ai/install.sh | bash -s 2.0.13
         else
           echo "Using custom Claude Code executable: ${{ inputs.path_to_claude_code_executable }}"
           # Add the directory containing the custom executable to PATH

docs/security.md

@@ -13,6 +13,10 @@
 - **No Cross-Repository Access**: Each action invocation is limited to the repository where it was triggered
 - **Limited Scope**: The token cannot access other repositories or perform actions beyond the configured permissions
 
+## ⚠️ Prompt Injection Risks
+
+**Beware of potential hidden markdown when tagging Claude on untrusted content.** External contributors may include hidden instructions through HTML comments, invisible characters, hidden attributes, or other techniques. The action sanitizes content by stripping HTML comments, invisible characters, markdown image alt text, hidden HTML attributes, and HTML entities, but new bypass techniques may emerge. We recommend reviewing the raw content of all input coming from external contributors before allowing Claude to process it.
+
 ## GitHub App Permissions
 
 The [Claude Code GitHub app](https://github.com/apps/claude) requires these permissions: