Add named project snapshots

src/shared/validation/project-snapshot.schemas.ts

@@ -0,0 +1,10 @@
+import { z } from "zod";
+import { expectedProjectRevisionSchema } from "./project-command.schemas.js";
+
+export const createNamedProjectSnapshotSchema = z
+  .object({
+    expectedRevision: expectedProjectRevisionSchema,
+    name: z.string().trim().min(1).max(100),
+    description: z.string().trim().max(500).optional(),
+  })
+  .strict();