chore(types): remove unused FromStr and IntoIterator impls

[detail-app]

Remove the "dead-on-arrival" trait impls from src/types.rs:
"impl FromStr for ObjectKind", "impl FromStr for ObjectKey",
and "impl IntoIterator for BucketNameSet". None of these had any
callers in the codebase (production or test) — confirmed via grep
for '.parse()', 'from_str', 'IntoIterator', and 'into_iter' across
src/, tests/, and the binary — and the 'use std::str::FromStr'
import that existed only to support the two FromStr impls is
retired in the same change.

"ObjectKind" and "ObjectKey" still expose Deserialize for
deserialization (used by axum's Path<(ObjectKind, ObjectKey)>
extractor in routes.rs), and "BucketNameSet" still exposes
Deref<Target = [BucketName]> and From for iteration
and construction, so removing these impls does not change any
runtime behavior or output.

History

• Last materially changed September 2025 (@shikhar) — introduced in commit 2c1010e (init); never touched since.

---

Dead Code PRs can be configured here.

[greptile-apps]

PR author is not in the allowed authors list.