Central Module Registry MVP for Official Modules

[djm81]

Central Module Registry MVP for Official Modules

Why

The modular architecture (arch-01 through arch-07) provides strong encapsulation, but modules remain built-in to the CLI package with no discovery mechanism for external modules. To enable marketplace ecosystem growth, we need a central registry with module discovery, installation, and verification infrastructure supporting official NOLD AI modules as the MVP foundation.

What Changes

• NEW: Create nold-ai/specfact-cli-modules GitHub repository with registry index and module publishing infrastructure
• NEW: Create module module with CLI commands for install/uninstall/search/list/upgrade operations
• NEW: Implement multi-location module discovery (built-in, marketplace, custom paths)
• NEW: Create marketplace client for fetching registry index and downloading module tarballs
• NEW: Create module installer with checksum verification and marketplace path management
• MODIFY: Extend module discovery to scan multiple locations (~/.specfact/marketplace-modules, ~/.specfact/custom-modules)
• NEW: Add registry index.json schema with module metadata (id, namespace, version, download URLs, checksums)
• NEW: Add documentation for installing modules and marketplace usage

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OpenSpec Change Proposal: marketplace-01-central-module-registry