`prepare` is undefined because A ≠ B.Package name, version, and bytes cannot make two local Symbol values equal.
Prove physical identity.
Find direct and nested copies installed with the plugin.
Resolve the core closure that owns Agent and ToolRuntime.
Symlink aliases are fine only when they canonicalize together.
Restore Host ownership.
manifest, lockfile, patch, paths
pnpm, autoInstallPeers false
one physical core closure
native + MCP + restart
Do not fix identity with optional chaining.
Skipping an absent scheduler silently converts every tool into incorrect Agent behavior.
Keep the complete recovery runbook.
The canonical guide includes two-anchor resolution, transactional reinstall, misleading fixes, boot invariant design, and eleven regression gates.
Read the complete guide