feat(admin) : persist drafts and add constellation conditions

app/admin/actions.ts

@@ -16,6 +16,7 @@ import { builtInTemplates } from "@/lib/templates";
 import { persistTemplateApplication } from "@/lib/templates/persist";
 import {
   createGuide,
+  GuideVersionConflictError,
   permanentlyDeleteGuide,
   restoreGuide,
   runCatalogSync,
@@ -204,13 +205,19 @@ export async function applyEditorTemplate(input: unknown): Promise<
 
 type GuideActionResult =
   | { status: "saved"; version?: number; location?: string }
+  | { status: "conflict"; currentVersion: number; message: string }
   | { status: "error"; message: string };
 
+type CreateGuideActionResult = Exclude<GuideActionResult, { status: "conflict" }>;
+
 async function runGuideAction(action: () => Promise<{ version?: number }>): Promise<GuideActionResult> {
   try {
     const result = await action();
     return { status: "saved", version: result.version };
   } catch (cause) {
+    if (cause instanceof GuideVersionConflictError) {
+      return { status: "conflict", currentVersion: cause.currentVersion, message: cause.message };
+    }
     if (cause instanceof z.ZodError) {
       return { status: "error", message: cause.issues.map((issue) => issue.message).join(" • ") };
     }
@@ -218,7 +225,7 @@ async function runGuideAction(action: () => Promise<{ version?: number }>): Prom
   }
 }
 
-export async function createStructuredGuide(input: unknown): Promise<GuideActionResult> {
+export async function createStructuredGuide(input: unknown): Promise<CreateGuideActionResult> {
   await requireAdmin();
   try {
     const guide = await createGuide(input);