From 63b1d93272a91febb848cd5eab2f226b1f0c20c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=CE=B1=CE=B7dr3=CE=B15=20=C9=AE=CE=B1=CE=B7=C9=A6=D6=85l?=
 =?UTF-8?q?=CA=903=CA=80?= <2878033+a6b8@users.noreply.github.com>
Date: Fri, 19 Jun 2026 22:55:31 +0200
Subject: [PATCH] fix: exclude _-prefixed meta dirs in RebuildIndex (Memo 138)
 #65

#listSchemaDirs enumerated the _schema emit dir as a phantom pending schema, inflating the schema count and tainting the rollup. Excludes _-prefixed meta dirs (schema names never start with _).
---
 src/RebuildIndex.mjs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/RebuildIndex.mjs b/src/RebuildIndex.mjs
index 014644e..2bb8105 100644
--- a/src/RebuildIndex.mjs
+++ b/src/RebuildIndex.mjs
@@ -992,8 +992,13 @@ class RebuildIndex {
 
     static async #listSchemaDirs( { namespaceDir } ) {
         const all = await RebuildIndex.#listSubDirs( { dir: namespaceDir } )
+        // Exclude meta dirs (`_gradings`, the per-schema emit dir `_schema`, and any
+        // future `_`-prefixed island dir). Schema names are `[a-z][a-z0-9-]*`, so none
+        // start with `_` — excluding them keeps the emit scaffolding from surfacing as
+        // a phantom pending schema that taints the rollup + the schema count.
         return all
             .filter( ( name ) => name !== GRADINGS_DIR )
+            .filter( ( name ) => name.startsWith( '_' ) === false )
     }