- Extend core/plugin-sdk types with runtime manifest metadata, runtime factory, and runtime registration exports
- Add runtime validation in plugin manifest parsing, including runtimeId slug and semver checks
- Add PluginLoader.getPluginRuntimes() and PluginRunner runtime cache/invalidation plumbing across plugin lifecycle events
- Expand plugin loader/runner test coverage for runtime discovery and cache behavior, and document runtime registration in PLUGIN_AUTHORING.md
- Add roadmap schema migration v32 with covering indexes for roadmapItems table
- Implement RoadmapStore with CRUD and deterministic ordering
- Wire RoadmapStore access via TaskStore.getRoadmapStore()
- Update architecture.md with RoadmapStore persistence docs
- Fix pre-existing test failures in SettingsModal and store tests
