Backport upstream matching and abort fixes plus safe deepmerge property handling across the independent workspaces. Includes installed-package regression tests and audit-tool fixture repair. Agent-reviewed at 83ca381d519e6247d7c1b3f0a52ce2907a9f9a19; CI aggregate passed. Version-based scanner alerts remain open pending documented disposition or compatible upstream releases.
12.10.1 repairs a global-virtual-store slot an interrupted install left
without dependency links (pnpm/pnpm#16642); 12.12 adds addMissingPeerTypes.
The CI store-mode and terminal-perf gates follow the pin they were measured
against, and mobile/ and config/audit-tools record the same pnpm.