- Add template export utilities for standard JSON packages and standalone HTML template packages.
- Make the top-level JSON export use the standard surclaw template package format so it can be imported again.
- Add an HTML template package export that embeds A4/print styling and template metadata for visual preview and round-trip import.
- Extend template import to accept both JSON and HTML template package files while keeping old raw template JSON compatible.
- Add tests for package creation, HTML round-trip import, legacy JSON import, and file name cleanup.
- Update template management, feature, progress, testing, and AGENTS documentation for the new export formats.