d4d3306150
Plugin adapters in molecule-skill-* repos do: from plugins_registry.builtins import AgentskillsAdaptor as Adaptor But _load_module_from_path() used exec_module() with a fresh module namespace that did NOT have plugins_registry or its submodules in sys.modules, causing: ModuleNotFoundError: No module named 'plugins_registry' Fix: before exec_module(), import and register plugins_registry + all three submodules (builtins, protocol, raw_drop) in sys.modules so adapter imports resolve correctly. Follows the Option 1 recommendation from issue #296. Also adds test_resolve_plugin.py verifying the fix for both the AgentskillsAdaptor import and the full InstallContext/resolve/protocol import. Closes #296. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>