fix(tui): use fixed glamour style to avoid slow terminal detection

- Replace glamour.WithAutoStyle() with glamour.WithStylePath("dark")
- Fixes 7+ second delays when entering bean detail view
- WithAutoStyle() terminal detection was causing hangs across all terminals

Closes: beans-52yy

Author: hmans

.beans/beans-52yy--tui-random-long-delays-when-entering-bean-detail-v.md

@@ -1,10 +1,10 @@
 ---
 title: 'TUI: Random long delays when entering bean detail view'
-status: todo
+status: completed
 type: bug
 priority: normal
 created_at: 2025-12-13T01:27:14Z
-updated_at: 2025-12-13T01:27:34Z
+updated_at: 2025-12-13T01:47:46Z
 ---
 
 ## Description

internal/tui/detail.go

@@ -28,7 +28,9 @@ var (
 func getGlamourRenderer() *glamour.TermRenderer {
 	glamourRendererOnce.Do(func() {
 		var err error
-		glamourRenderer, err = glamour.NewTermRenderer(glamour.WithAutoStyle())
+		// Use DarkStyle instead of WithAutoStyle() to avoid slow terminal detection
+		// that can cause multi-second delays in some terminals
+		glamourRenderer, err = glamour.NewTermRenderer(glamour.WithStylePath("dark"))
 		if err != nil {
 			glamourRenderer = nil
 		}