Add bold style for border (#4644)

- **PR Description**

bold border looks great and makes it easy to notice the color change

docs/Config.md

@@ -248,7 +248,7 @@ gui:
   screenMode: normal
 
   # Window border style.
-  # One of 'rounded' (default) | 'single' | 'double' | 'hidden'
+  # One of 'rounded' (default) | 'single' | 'double' | 'hidden' | 'bold'
   border: rounded
 
   # If true, show a seriously epic explosion animation when nuking the working tree.

pkg/config/app_config_test.go

@@ -560,7 +560,7 @@ gui:
   screenMode: normal
 
   # Window border style.
-  # One of 'rounded' (default) | 'single' | 'double' | 'hidden'
+  # One of 'rounded' (default) | 'single' | 'double' | 'hidden' | 'bold'
   border: rounded
 
   # If true, show a seriously epic explosion animation when nuking the working tree.

pkg/config/user_config.go

@@ -166,8 +166,8 @@ type GuiConfig struct {
 	// One of: 'normal' (default) | 'half' | 'full'
 	ScreenMode string `yaml:"screenMode" jsonschema:"enum=normal,enum=half,enum=full"`
 	// Window border style.
-	// One of 'rounded' (default) | 'single' | 'double' | 'hidden'
-	Border string `yaml:"border" jsonschema:"enum=single,enum=double,enum=rounded,enum=hidden"`
+	// One of 'rounded' (default) | 'single' | 'double' | 'hidden' | 'bold'
+	Border string `yaml:"border" jsonschema:"enum=single,enum=double,enum=rounded,enum=hidden,enum=bold"`
 	// If true, show a seriously epic explosion animation when nuking the working tree.
 	AnimateExplosion bool `yaml:"animateExplosion"`
 	// Whether to stack UI components on top of each other.

pkg/gui/views.go

@@ -159,6 +159,8 @@ func (gui *Gui) configureViewProperties() {
 		frameRunes = []rune{'─', '│', '╭', '╮', '╰', '╯'}
 	case "hidden":
 		frameRunes = []rune{' ', ' ', ' ', ' ', ' ', ' '}
+	case "bold":
+		frameRunes = []rune{'━', '┃', '┏', '┓', '┗', '┛'}
 	}
 
 	for _, mapping := range gui.orderedViewNameMappings() {

schema/config.json

@@ -685,9 +685,10 @@
             "single",
             "double",
             "rounded",
-            "hidden"
+            "hidden",
+            "bold"
           ],
-          "description": "Window border style.\nOne of 'rounded' (default) | 'single' | 'double' | 'hidden'",
+          "description": "Window border style.\nOne of 'rounded' (default) | 'single' | 'double' | 'hidden' | 'bold'",
           "default": "rounded"
         },
         "animateExplosion": {