Fix CLI TypeScript types missing vector indexes (#41922)

GitOrigin-RevId: d446fe6bb34c0cf0876426732736f69b876ee7b0

Author: Nicolapps

crates/local_backend/src/schema.rs

@@ -74,13 +74,17 @@ struct BackfillResponse {
     state: String,
 }
 
+// When updating this, please keep `IndexMetadata`
+// in `npm-packages/convex/src/cli/lib/indexes.ts` in sync
 #[derive(Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct IndexMetadataResponse {
     table: String,
     name: String,
-    // Either an array of fields (`string[]`) for a database index or an object of
-    // `{ searchField: string, filterFields: string }` for a search index.
+    // Either:
+    // - an array of fields (`string[]`) for a database index
+    // - `{ searchField: string, filterFields: string[] }` for a search index
+    // - `{ dimensions: number, vectorField: string, filterFields: string[] }` for a vector index
     fields: JsonValue,
     backfill: BackfillResponse,
     staged: bool,

npm-packages/convex/src/cli/lib/indexes.ts

@@ -24,6 +24,11 @@ type IndexMetadata = {
     | {
         searchField: string;
         filterFields: string[];
+      }
+    | {
+        dimensions: number;
+        vectorField: string;
+        filterFields: string[];
       };
   backfill: {
     state: "in_progress" | "done";