- uninstall() now uses non-resolved path for deletion so symlinks
themselves are removed, not their targets; resolve only for
containment validation
- setup() keeps unresolved dst_file for copy; resolves separately
for project-root validation
- load() catches json.JSONDecodeError and re-raises as ValueError
with the manifest path for clearer diagnostics
- Added test for invalid JSON manifest loading
Add the integrations package with:
- IntegrationBase ABC and MarkdownIntegration base class
- IntegrationOption dataclass for per-integration CLI options
- IntegrationManifest with SHA-256 hash-tracked install/uninstall
- INTEGRATION_REGISTRY (empty, populated in later stages)
- 34 tests at 98% coverage
Purely additive — no existing code modified.
Part of #1924
