chore: isolate shared dsh plugins into independent monorepo

scripts/patch-cordis.mjs

@@ -0,0 +1,49 @@
+import fs from 'node:fs'
+
+/**
+ * Idempotently append an `- insert:` patch block to a DSH cordis.patch.yml
+ * file unless a row with the same full package name already exists.
+ *
+ * Usage: node patch-cordis.mjs --file <path> --name <full pkg name> [--id <id>]
+ */
+function parseArg(key) {
+  const i = process.argv.indexOf(key)
+  return i >= 0 ? process.argv[i + 1] : undefined
+}
+
+const file = parseArg('--file')
+const name = parseArg('--name')
+const id = parseArg('--id') || (name ? name.split('/').pop() : undefined)
+
+if (!file || !name || !id) {
+  console.error('usage: node patch-cordis.mjs --file <path> --name <full-pkg-name> [--id <id>]')
+  process.exit(2)
+}
+
+let text
+try {
+  text = fs.readFileSync(file, 'utf8')
+} catch (err) {
+  console.error(`cannot read ${file}: ${err.message}`)
+  process.exit(1)
+}
+
+// Idempotency: if a row with this name already exists, nothing to do.
+if (text.includes(`name: '${name}'`) || text.includes(`name: "${name}"`)) {
+  console.log(`already present: ${name} — no change`)
+  process.exit(0)
+}
+
+const block = [
+  '',
+  '- insert:',
+  '    - id: ' + id,
+  `      name: '${name}'`,
+  '      config: {}',
+  '',
+].join('\n')
+
+// Append preserving a single trailing newline.
+const trimmed = text.endsWith('\n') ? text.slice(0, -1) : text
+fs.writeFileSync(file, trimmed + '\n' + block + '\n')
+console.log(`appended insert for ${name} (id=${id}) to ${file}`)