The Agent Skills Directory

[COMMAND_EXECUTION]: The skill instructs the user to execute shell commands using composer and ddev to install dependencies and run the Rector refactoring tool. These are standard operations for PHP development and TYPO3 migrations.
[INDIRECT_PROMPT_INJECTION]: The skill's primary function is to process and migrate PHP source code and TCA (Table Configuration Array) files. While this creates a surface for processing untrusted code, it is the intended primary purpose of a migration tool.
Ingestion points: PHP source files and TYPO3 TCA configuration files (e.g., Configuration/TCA/Overrides/*.php).
Boundary markers: None explicitly mentioned for the agent when processing user code.
Capability inventory: Execution of rector process and composer via shell commands.
Sanitization: No specific sanitization or escaping of external PHP content is mentioned; the skill relies on the underlying Rector tool's parsing logic.
[EXTERNAL_DOWNLOADS]: The skill references the installation of ssch/typo3-rector from a well-known community repository, which is the standard tool for TYPO3 Rector migrations.

typo3-rector