From b51b28cb9f6e933e1c4fb28ecbc23cc9bc88d4a1 Mon Sep 17 00:00:00 2001
From: Ryoya Tamura <ryoya.tamura@nulab.com>
Date: Fri, 20 Feb 2026 00:59:57 +0900
Subject: [PATCH] fix(config): use .backlogrc as rc9 config name to prevent
 EISDIR error

rc9's readUser({ name: "backlog" }) resolves to ~/backlog, which crashes
with EISDIR when a ~/backlog directory exists. Change APP_NAME to
".backlogrc" so rc9 reads ~/.backlogrc instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 packages/config/src/config.test.ts | 3 ++-
 packages/config/src/config.ts      | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/config/src/config.test.ts b/packages/config/src/config.test.ts
index 30b3fcd..a5b0489 100644
--- a/packages/config/src/config.test.ts
+++ b/packages/config/src/config.test.ts
@@ -23,6 +23,7 @@ describe("loadConfig", () => {
 
 		const config = await loadConfig();
 
+		expect(readUser).toHaveBeenCalledWith({ name: ".backlogrc" });
 		expect(config.defaultSpace).toBe("example.backlog.com");
 		expect(config.spaces).toHaveLength(1);
 		expect(config.spaces[0]?.host).toBe("example.backlog.com");
@@ -70,6 +71,6 @@ describe("writeConfig", () => {
 
 		await writeConfig(config);
 
-		expect(writeUser).toHaveBeenCalledWith(config, { name: "backlog" });
+		expect(writeUser).toHaveBeenCalledWith(config, { name: ".backlogrc" });
 	});
 });
diff --git a/packages/config/src/config.ts b/packages/config/src/config.ts
index 171917f..769e028 100644
--- a/packages/config/src/config.ts
+++ b/packages/config/src/config.ts
@@ -3,7 +3,7 @@ import { type } from "arktype";
 import consola from "consola";
 import { readUser, writeUser } from "rc9";
 
-const APP_NAME = "backlog";
+const APP_NAME = ".backlogrc";
 
 /**
  * Loads and validates the user configuration from the rc file.