test(manager/bazel): close the bazel branch coverage gaps
Adds two extractions that no test covered: a `go_repository` carrying
both a tag and a commit, which must not be marked digest-only, and a
`maven_install` artifact whose coordinate is not group:artifact:version.
Marks the rest. `parser.ts` guards are type narrowing over the parsed
fragment tree, where the else only happens if the parser hands back a
shape it never produces. In `artifacts.ts` only http rules reach
updateArtifacts, and the empty url list already returned earlier.
The digest branch in `rules/http.ts` stays counted: a coverage-ignore
hint does not attach to an `else if`, so it carries a plain note.
Co-authored-by: Claude Opus 5 <michael.kriese+claude-code@mend.io>
Enable the unicorn/prefer-at rule as error in .oxlintrc.json and fix all
43 pre-existing violations (arr[arr.length - 1] -> arr.at(-1)) via oxlint
autofix. Where .at() widened the type to T | undefined, non-null
assertions were added at sites where surrounding logic guarantees the
element exists (length guards, split results), preserving the original
runtime behavior and typing.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Michael Kriese