Add opt-in GRDB memory with frozen conversation snapshots, background learning, session search, and a user-only Destroy action on both platforms. Persist and synchronize complete skill packages with the new AgentKit management tools.
Pin signed AgentKit 0.12.3 and GRDB 7.11.1. Add the V18 package migration, regression coverage, bilingual UI snapshots, and architecture records.
Validation: AgentKit and iOS suites, focused macOS skills/memory/architecture/localization tests, Swift formatting, and Chinese localization checks passed. Full macOS runs exposed intermittent existing waveform-rendering and metrics-timing failures.
