Add Autoloop Go migration progress site

[Copilot]

Description

Adds a GitHub Pages progress page for the Autoloop Python-to-Go migration, seeded from Autoloop memory, workflow runs, and migration status data.

• Progress page

  • Adds current status, migrated line/module counts, iteration history, benchmark snapshot, validation signals, and next-up work.
  • Exposes the page in the docs sidebar under Progress.

• Automated updates

  • Adds a gh-aw agentic workflow to refresh the progress page from Autoloop state.
  • Compiles the workflow lockfile for Actions execution.

• Pages deploy

  • Updates docs deployment so progress page changes deploy on merge to main.

Type of change

• Bug fix
• New feature
• Documentation
• Maintenance / refactor

Testing

• Tested locally
• All existing tests pass
• Added tests for new functionality (if applicable)