Addresses all 31 warnings emitted by cargo clippy: redundant field
names in struct initialisers, unnecessary unwrap after is_some checks
(replaced with if-let), needless borrows, filter+next replaced with
find, iter().count() replaced with len(), clone on Copy type, and
manual match-to-Option replaced with .ok().
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Annotates all API handlers and model structs with Utoipa macros to generate
an OpenAPI 3.0 spec at runtime. Serves an interactive Swagger UI at /api/docs
and the raw JSON spec at /api/docs/openapi.json, both publicly accessible
outside the auth middleware.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
