Refactor paired runtime orchestration

src/message-runtime-shared.ts

@@ -0,0 +1,40 @@
+import type { PairedRoomRole } from './types.js';
+import type { ServiceHandoff } from './db.js';
+
+export function resolveHandoffRoleOverride(
+  handoff: Pick<ServiceHandoff, 'target_role' | 'intended_role' | 'reason'>,
+): PairedRoomRole | undefined {
+  if (handoff.target_role) {
+    return handoff.target_role;
+  }
+  if (handoff.intended_role) {
+    return handoff.intended_role;
+  }
+  if (handoff.reason?.startsWith('reviewer-')) {
+    return 'reviewer';
+  }
+  if (handoff.reason?.startsWith('arbiter-')) {
+    return 'arbiter';
+  }
+  return undefined;
+}
+
+export function resolveHandoffCursorKey(
+  chatJid: string,
+  role?: PairedRoomRole,
+): string {
+  if (!role || role === 'owner') {
+    return chatJid;
+  }
+  return `${chatJid}:${role}`;
+}
+
+export function getFixedRoleChannelName(role: 'reviewer' | 'arbiter'): string {
+  return role === 'reviewer' ? 'discord-review' : 'discord-arbiter';
+}
+
+export function getMissingRoleChannelMessage(
+  role: 'reviewer' | 'arbiter',
+): string {
+  return `Missing configured ${role} Discord bot channel (${getFixedRoleChannelName(role)}) for role-fixed delivery`;
+}