Speckit Constitution Zh

This handles project constitution setup and maintenance in Chinese for the speckit framework. It copies template files into a `.specify` directory structure, then walks you through filling in placeholders for project principles, governance dates, and versioning. The interesting bit is the consistency check: after you update the constitution, it automatically verifies that your plan, spec, and task templates still align with the new principles, flagging anything that needs manual fixing. It enforces semantic versioning for governance changes and generates an impact report showing what changed and which files need attention. Useful if you're running structured project workflows and want to keep documentation synchronized when team policies evolve.