feat(convex): add full domain schema and snapshot sync bridge

convex/state.ts

@@ -1,5 +1,6 @@
 import { mutation, query } from "./_generated/server";
 import { v } from "convex/values";
+import { syncFromEngineSnapshot } from "./domain";
 
 export const getLatestSnapshot = query({
   args: {},
@@ -29,17 +30,26 @@ export const saveSnapshot = mutation({
       .order("desc")
       .first();
 
+    const syncSummary = await syncFromEngineSnapshot(ctx, args.snapshot);
+
     if (latest) {
       await ctx.db.patch(latest._id, {
         snapshot: args.snapshot,
         updatedAt: args.updatedAt,
       });
-      return latest._id;
+      return {
+        snapshotId: latest._id,
+        syncSummary,
+      };
     }
 
-    return ctx.db.insert("state_snapshots", {
+    const snapshotId = await ctx.db.insert("state_snapshots", {
       snapshot: args.snapshot,
       updatedAt: args.updatedAt,
     });
+    return {
+      snapshotId,
+      syncSummary,
+    };
   },
 });