M12 EXTENSION RUNTIME

[flyingrobots]

M12: Extension Runtime

H1 of the Vision North Star — Deterministic Extension Foundation — has one remaining gap: the Extension Runtime.

The extension manifest schema already exists (docs/contracts/extension-manifest.schema.json). This milestone adds the runtime layer that can load, validate, and register extensions.

Scope

• EXT-001: Promote ajv to production dependency
• EXT-002: Implement src/extension.js
• EXT-003: Create extensions/ directory with built-in manifests
• EXT-004: Add git mind extension CLI subcommand
• EXT-005: Unit tests for extension runtime
• EXT-006: Integration tests for built-in extensions
• EXT-007: Export extension API from src/index.js

Goal

~520+ tests passing; git mind extension list shows roadmap + architecture.