feat: better assistant message visual

packages/tui/internal/components/chat/message.go

@@ -23,17 +23,18 @@ import (
 )
 
 type blockRenderer struct {
-	textColor     compat.AdaptiveColor
-	border        bool
-	borderColor   *compat.AdaptiveColor
-	borderLeft    bool
-	borderRight   bool
-	paddingTop    int
-	paddingBottom int
-	paddingLeft   int
-	paddingRight  int
-	marginTop     int
-	marginBottom  int
+	textColor       compat.AdaptiveColor
+	backgroundColor compat.AdaptiveColor
+	border          bool
+	borderColor     *compat.AdaptiveColor
+	borderLeft      bool
+	borderRight     bool
+	paddingTop      int
+	paddingBottom   int
+	paddingLeft     int
+	paddingRight    int
+	marginTop       int
+	marginBottom    int
 }
 
 type renderingOption func(*blockRenderer)
@@ -44,6 +45,12 @@ func WithTextColor(color compat.AdaptiveColor) renderingOption {
 	}
 }
 
+func WithBackgroundColor(color compat.AdaptiveColor) renderingOption {
+	return func(c *blockRenderer) {
+		c.backgroundColor = color
+	}
+}
+
 func WithNoBorder() renderingOption {
 	return func(c *blockRenderer) {
 		c.border = false
@@ -132,14 +139,15 @@ func renderContentBlock(
 ) string {
 	t := theme.CurrentTheme()
 	renderer := &blockRenderer{
-		textColor:     t.TextMuted(),
-		border:        true,
-		borderLeft:    true,
-		borderRight:   false,
-		paddingTop:    1,
-		paddingBottom: 1,
-		paddingLeft:   2,
-		paddingRight:  2,
+		textColor:       t.TextMuted(),
+		backgroundColor: t.BackgroundPanel(),
+		border:          true,
+		borderLeft:      true,
+		borderRight:     false,
+		paddingTop:      1,
+		paddingBottom:   1,
+		paddingLeft:     2,
+		paddingRight:    2,
 	}
 	for _, option := range options {
 		option(renderer)
@@ -152,7 +160,7 @@ func renderContentBlock(
 
 	style := styles.NewStyle().
 		Foreground(renderer.textColor).
-		Background(t.BackgroundPanel()).
+		Background(renderer.backgroundColor).
 		PaddingTop(renderer.paddingTop).
 		PaddingBottom(renderer.paddingBottom).
 		PaddingLeft(renderer.paddingLeft).
@@ -211,7 +219,7 @@ func renderText(
 	switch casted := message.(type) {
 	case opencode.AssistantMessage:
 		ts = time.UnixMilli(int64(casted.Time.Created))
-		content = util.ToMarkdown(text, width, backgroundColor)
+		content = util.ToMarkdown(text, width+2, t.Background())
 	case opencode.UserMessage:
 		ts = time.UnixMilli(int64(casted.Time.Created))
 		base := styles.NewStyle().Foreground(t.Text()).Background(backgroundColor)
@@ -286,14 +294,14 @@ func renderText(
 			width,
 			WithTextColor(t.Text()),
 			WithBorderColor(t.Secondary()),
-			WithBorderRight(),
 		)
 	case opencode.AssistantMessage:
 		return renderContentBlock(
 			app,
 			content,
-			width,
-			WithBorderColor(t.Accent()),
+			width+2,
+			WithNoBorder(),
+			WithBackgroundColor(t.Background()),
 		)
 	}
 	return ""

packages/tui/internal/util/text.go

@@ -1,52 +0,0 @@
-package util
-
-import (
-	"regexp"
-	"strings"
-
-	"github.com/charmbracelet/lipgloss/v2"
-)
-
-// PreventHyphenBreaks replaces regular hyphens with non-breaking hyphens to prevent
-// sparse word breaks in hyphenated terms like "claude-code-action".
-// This improves readability by keeping hyphenated words together.
-// Only preserves hyphens within words, not markdown syntax like bullet points.
-func PreventHyphenBreaks(text string) string {
-	// Use regex to match hyphens that are between word characters
-	// This preserves hyphens in words like "claude-code-action" but not in "- [ ]"
-	re := regexp.MustCompile(`(\w)-(\w)`)
-	return re.ReplaceAllString(text, "$1\u2011$2")
-}
-
-// RestoreHyphens converts non-breaking hyphens back to regular hyphens.
-// This should be called after text processing (like word wrapping) is complete.
-func RestoreHyphens(text string) string {
-	return strings.ReplaceAll(text, "\u2011", "-")
-}
-
-// ProcessTextWithHyphens applies hyphen preservation to text during processing.
-// It wraps the provided processFunc with hyphen handling.
-func ProcessTextWithHyphens(text string, processFunc func(string) string) string {
-	preserved := PreventHyphenBreaks(text)
-	processed := processFunc(preserved)
-	return RestoreHyphens(processed)
-}
-
-// GetMessageContainerFrame calculates the actual horizontal frame size
-// (padding + borders) for message containers based on current theme.
-func GetMessageContainerFrame() int {
-	style := lipgloss.NewStyle().
-		BorderStyle(lipgloss.ThickBorder()).
-		BorderLeft(true).
-		BorderRight(true).
-		PaddingLeft(2).
-		PaddingRight(2)
-	return style.GetHorizontalFrameSize()
-}
-
-// GetMarkdownContainerFrame calculates the actual horizontal frame size
-// for markdown containers based on current theme.
-func GetMarkdownContainerFrame() int {
-	// Markdown containers use the same styling as message containers
-	return GetMessageContainerFrame()
-}