* Fix all golangci-lint issues across the codebase
Resolve 77 lint issues reported by golangci-lint with gocritic, gocognit,
gocyclo, maintidx, dupl, mnd, unparam, ireturn, goconst, and errcheck
enabled. Net reduction of ~175 lines through shared helpers and
deduplication.
* Suppress staticcheck SA1019 for intentional deprecated field usage
The Storage.Path field is deprecated but still read for backwards
compatibility with existing configs that haven't migrated to the URL field.
POST endpoints (/api/outdated, /api/bulk) now reject bodies over 1 MB
using http.MaxBytesReader. Upstream metadata reads (npm, pypi, composer,
nuget, pub) now use io.LimitReader capped at 50 MB to prevent OOM from
unexpectedly large responses.
Replace err.Error() in HTTP error responses with generic messages.
Internal details like database driver errors and enrichment failures
were being sent directly to clients.
Uses purl.MakePURLString() instead of fmt.Sprintf("pkg:...") for
correct namespace handling (npm scopes, Go module paths, Maven group
IDs) and percent-encoding. Replaces hand-rolled extractEcosystem and
inline PURL parsing in the bulk lookup fallback with purl.Parse().
Adds proxy support for Docker/OCI container registries, Debian/APT
repositories, and RPM/Yum repositories. Includes a new enrichment API
for package metadata, vulnerability scanning, and outdated detection.
Updates the dashboard with Tailwind CSS, dark mode support, and a
security overview section showing vulnerability counts.
