List view of application is searchable

[barlock]

As a user I want to search my notes so that I don't have to spend a lot of time finding old notes

Assumptions

• Search is done on device

[humbitious]

Test: search functions create new surveillance vulnerability that defeats the utility of the SSV (self-sovereign vault).

[barlock]

I've added an assumption that search is done on device. I'm trying to decide what an "appropriate" level of security for that "note db" should be. iPhones are encrypted at rest by default. We can add an extra level of encryption, but we'd need to protect the key somehow. I believe apps can't access another apps storage.

Might be good for an ios/mobile expert to lead a hand here on what baseline is for sensitive local data.