From 4c5eea4be32762c2a2dbe55a31f98ed883a8f842 Mon Sep 17 00:00:00 2001
From: Evgeniy Tikhomirov <mechtar_ru@gmail.com>
Date: Sat, 25 Apr 2026 03:24:01 +0300
Subject: [PATCH] fix(ast-miner): pin encoding on readdirSync for Node 25 type
 compatibility

Add encoding: 'utf-8' to readdirSync calls to fix TypeScript errors in Node 25:
- Type 'Dirent<string>[]' not assignable to type 'Dirent<NonSharedBuffer>[]'
- Property 'startsWith' does not exist on type 'NonSharedBuffer'

Same pattern as skills-miner.ts:226-229
---
 bench/real-world.ts     | 2 +-
 src/miners/ast-miner.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/bench/real-world.ts b/bench/real-world.ts
index 098a5c6..0e57ac4 100644
--- a/bench/real-world.ts
+++ b/bench/real-world.ts
@@ -90,7 +90,7 @@ function collectSourceFiles(root: string, cap: number): string[] {
     if (out.length >= cap) return;
     let entries: ReturnType<typeof readdirSync>;
     try {
-      entries = readdirSync(dir, { withFileTypes: true });
+      entries = readdirSync(dir, { withFileTypes: true, encoding: "utf-8" });
     } catch {
       return;
     }
diff --git a/src/miners/ast-miner.ts b/src/miners/ast-miner.ts
index 1857723..30b577b 100644
--- a/src/miners/ast-miner.ts
+++ b/src/miners/ast-miner.ts
@@ -612,7 +612,7 @@ export function extractDirectory(
 
     let entries: Dirent[];
     try {
-      entries = readdirSync(dir, { withFileTypes: true });
+      entries = readdirSync(dir, { withFileTypes: true, encoding: "utf-8" });
     } catch {
       return;
     }