0.5.2 lib types break strict consumers (ProviderHeaders string|null vs Record<string,string>)

[rz1989s]

Summary

@getpipher/vision@0.5.2's shipped lib types fail typecheck in strict downstream consumers. armory-fleet's pnpm typecheck (tsc strict, skipLibCheck default) went red on main with zero local changes after 0.5.2 landed via the ^0.5 range.

Errors (from armory-fleet, lib/delegate.ts)

• lib/delegate.ts(434,64): error TS2345: Argument of type 'ProviderHeaders | undefined' is not assignable to parameter of type 'Record<string, string> | undefined'. Type 'ProviderHeaders' is not assignable ... 'string | null' is not assignable to type 'string'.

So ProviderHeaders carries string | null values where a Record<string, string> is consumed — the delegate passes it through untyped-narrowed.

Impact

Any consumer with skipLibCheck: false + strict mode goes red the moment 0.5.2 resolves. armory-fleet pinned 0.5.1 exact as an interim gate-restore.

Ask

1. Fix the ProviderHeaders type (either narrow string | null → string at the source, or type the call site in delegate.ts to sanitize nulls).
2. Ship 0.5.3; consumers on ^0.5 pick it up automatically.

[rz1989s]

Interim: armory-fleet carries a committed pnpm patch (patches/@getpipher__vision@0.5.2.patch) sanitizing nulls at both call sites — drop it when 0.5.3 ships.