merge: wave 2 executor (01-02) into main

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

paperclip-reference/packages/shared/src/agent-url-key.ts

@@ -0,0 +1,22 @@
+const AGENT_URL_KEY_DELIM_RE = /[^a-z0-9]+/g;
+const AGENT_URL_KEY_TRIM_RE = /^-+|-+$/g;
+const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+
+export function isUuidLike(value: string | null | undefined): boolean {
+  if (typeof value !== "string") return false;
+  return UUID_RE.test(value.trim());
+}
+
+export function normalizeAgentUrlKey(value: string | null | undefined): string | null {
+  if (typeof value !== "string") return null;
+  const normalized = value
+    .trim()
+    .toLowerCase()
+    .replace(AGENT_URL_KEY_DELIM_RE, "-")
+    .replace(AGENT_URL_KEY_TRIM_RE, "");
+  return normalized.length > 0 ? normalized : null;
+}
+
+export function deriveAgentUrlKey(name: string | null | undefined, fallback?: string | null): string {
+  return normalizeAgentUrlKey(name) ?? normalizeAgentUrlKey(fallback) ?? "agent";
+}