chore: import upstream snapshot with attribution

clis/goproxy/module.js

@@ -0,0 +1,47 @@
+// goproxy module — latest version + origin metadata for one Go module.
+//
+// Hits `https://proxy.golang.org/<module>/@latest`, returning the canonical
+// version, publish time, and the upstream VCS / commit / tag the proxy resolved.
+import { cli, Strategy } from '@jackwener/opencli/registry';
+import { EmptyResultError } from '@jackwener/opencli/errors';
+import { GOPROXY_BASE, goproxyJson, requireModulePath, trimDate } from './utils.js';
+
+cli({
+    site: 'goproxy',
+    name: 'module',
+    access: 'read',
+    description: 'Latest version + VCS origin metadata for a Go module on proxy.golang.org',
+    domain: 'proxy.golang.org',
+    strategy: Strategy.PUBLIC,
+    browser: false,
+    args: [
+        { name: 'module', positional: true, type: 'string', required: true, help: 'Go module path (e.g. "github.com/gin-gonic/gin", "golang.org/x/net")' },
+    ],
+    columns: [
+        'module', 'version', 'publishedAt', 'vcs', 'repository',
+        'commit', 'ref', 'pkgGoDevUrl', 'url',
+    ],
+    func: async (args) => {
+        const modulePath = requireModulePath(args.module);
+        // GOPROXY spec requires lowercase percent-encoding for capital letters in the
+        // module path (e.g. github.com/Foo/Bar -> github.com/!foo/!bar). Module paths
+        // we accept here are lowercase-only by convention; we still encode each segment.
+        const encoded = modulePath.split('/').map(encodeURIComponent).join('/');
+        const detail = await goproxyJson(`${GOPROXY_BASE}/${encoded}/@latest`, `goproxy module ${modulePath}`);
+        if (!detail || !detail.Version) {
+            throw new EmptyResultError('goproxy module', `proxy.golang.org returned no @latest entry for "${modulePath}".`);
+        }
+        const origin = detail.Origin && typeof detail.Origin === 'object' ? detail.Origin : {};
+        return [{
+            module: modulePath,
+            version: String(detail.Version),
+            publishedAt: trimDate(detail.Time),
+            vcs: String(origin.VCS ?? '').trim(),
+            repository: String(origin.URL ?? '').trim(),
+            commit: String(origin.Hash ?? '').trim(),
+            ref: String(origin.Ref ?? '').trim(),
+            pkgGoDevUrl: `https://pkg.go.dev/${modulePath}`,
+            url: `${GOPROXY_BASE}/${encoded}/@latest`,
+        }];
+    },
+});