* fix(app): validate persisted client state
Persisted replica data could satisfy TypeScript through an assertion while missing fields required by renderers. Treat every AsyncStorage value as untrusted input, clear values that fail strict schemas, and version the replica DTO so incompatible caches cannot hydrate.
* fix(app): preserve validated legacy state
* fix(app): preserve validated preferences
Preserve supported legacy location fields and every shipped theme while keeping unknown persisted fields rejected. Align browser test seeds with the current preference shape so strict validation exercises the intended provider.
* fix(app): migrate legacy agent preferences
Released clients stored host/location fields and per-provider thinkingOptionId together. Migrate those exact strict bytes into current preferences without admitting unknown fields.
* fix(app): preserve drafts with legacy reviews
Accept the exact strict shape released for workspace review attachments so migration can discard that obsolete attachment without clearing every persisted draft.
