Clean up JSDoc comments and migrate entry point structure

- Remove excessive @param and @returns JSDoc tags from scripts/get-coverage-percentage.mjs
- Delete obsolete root-level index.ts file (moved to src/index.ts)
- Remove .oxlintignore file as patterns are now in .oxlintrc.json
- Add new src/index.ts as the TypeScript source entry point

Author: jdalton

.oxlintignore

@@ -15,9 +15,6 @@ const indent = '  '
 /**
  * Logs coverage percentage data including code and type coverage metrics.
  * Supports multiple output formats: default (formatted), JSON, and simple.
- * @param {Object} argv - Command line arguments.
- * @param {boolean} argv.json - Output as JSON.
- * @param {boolean} argv.simple - Output only the statement coverage percentage.
  */
 async function logCoveragePercentage(argv) {
   const { spinner } = constants

scripts/get-coverage-percentage.mjs

@@ -38,6 +38,10 @@ export {
   UrlConverter,
   err,
   ok,
-} from './src/package-url.js'
-export type { DownloadUrl, RepositoryUrl, Result } from './src/package-url.js'
+} from './package-url.js'
+export type {
+  DownloadUrl,
+  RepositoryUrl,
+  Result,
+} from './package-url.js'
 /* c8 ignore stop */