feat: UI improvements for session list (#8)

## Summary
- Add git branch icon (nerd font) before branch name
- Add blue left border indicator for selected items
- Improve visual hierarchy: title uses terminal default color, selected
items use blue
- Display session prompt (truncated with ellipsis) below title
- Make directory path and prompt text subtle (gray)
- Fix bug where prompt wasn't saved when recycling sessions

## Test plan
- [x] Run TUI and verify selected item has blue left border
- [x] Verify git branch shows icon prefix
- [x] Verify prompt displays below session name
- [x] Create session with prompt, recycle it, create new session -
verify prompt updates

Author: hay-kot

internal/hive/service.go

@@ -90,6 +90,7 @@ func (s *Service) CreateSession(ctx context.Context, opts CreateOptions) (*sessi
 
 		sess = recyclable
 		sess.Name = opts.Name
+		sess.Prompt = opts.Prompt
 		sess.State = session.StateActive
 		sess.UpdatedAt = time.Now()
 	} else {

internal/tui/delegate.go

@@ -11,6 +11,9 @@ import (
 	"github.com/hay-kot/hive/pkg/kv"
 )
 
+// maxPromptDisplayLen is the maximum number of runes to display for a session prompt.
+const maxPromptDisplayLen = 60
+
 // SessionItem wraps a session for the list component.
 type SessionItem struct {
 	Session session.Session
@@ -54,7 +57,7 @@ func NewSessionDelegate() SessionDelegate {
 
 // Height returns the height of each item.
 func (d SessionDelegate) Height() int {
-	return 4
+	return 5
 }
 
 // Spacing returns the spacing between items.
@@ -77,10 +80,7 @@ func (d SessionDelegate) Render(w io.Writer, m list.Model, index int, item list.
 	s := sessionItem.Session
 	isSelected := index == m.Index()
 
-	// Build the title line: ID  Name
-	title := fmt.Sprintf("%-8s %s", s.ID, s.Name)
-
-	// Build the description line: State | Path
+	// Build the title line: Name [state]
 	var stateStyle lipgloss.Style
 	switch s.State {
 	case session.StateActive:
@@ -91,26 +91,42 @@ func (d SessionDelegate) Render(w io.Writer, m list.Model, index int, item list.
 		stateStyle = d.Styles.Normal
 	}
 
-	state := stateStyle.Render(string(s.State))
-	desc := fmt.Sprintf("%s  %s", state, s.Path)
+	stateTag := stateStyle.Render(fmt.Sprintf("[%s]", s.State))
+	title := fmt.Sprintf("%s %s", s.Name, stateTag)
+
+	// Build the description line: Path
+	path := pathStyle.Render(s.Path)
+
+	// Build prompt line (truncated with ellipsis)
+	prompt := s.Prompt
+	if prompt == "" {
+		prompt = "(no prompt)"
+	}
+	promptRunes := []rune(prompt)
+	if len(promptRunes) > maxPromptDisplayLen {
+		prompt = string(promptRunes[:maxPromptDisplayLen-3]) + "..."
+	}
+	promptLine := promptStyle.Render(prompt)
 
 	// Build git status line
 	gitLine := d.renderGitStatus(s.Path)
 
-	// Apply selection styling
+	// Apply selection styling with left border
 	var titleStyle lipgloss.Style
+	var border string
 	if isSelected {
 		titleStyle = d.Styles.Selected
-		title = "> " + title
+		border = selectedBorderStyle.Render("┃") + " "
 	} else {
 		titleStyle = d.Styles.Normal
-		title = "  " + title
+		border = "  "
 	}
 
-	// Write to output
-	_, _ = fmt.Fprintf(w, "%s\n", titleStyle.Render(title))
-	_, _ = fmt.Fprintf(w, "  %s\n", desc)
-	_, _ = fmt.Fprintf(w, "  %s", gitLine)
+	// Write to output with left border
+	_, _ = fmt.Fprintf(w, "%s%s\n", border, titleStyle.Render(title))
+	_, _ = fmt.Fprintf(w, "%s%s\n", border, promptLine)
+	_, _ = fmt.Fprintf(w, "%s%s\n", border, path)
+	_, _ = fmt.Fprintf(w, "%s%s", border, gitLine)
 }
 
 // renderGitStatus returns the formatted git status line for a session path.
@@ -128,8 +144,8 @@ func (d SessionDelegate) renderGitStatus(path string) string {
 		return gitLoadingStyle.Render("Git: unavailable")
 	}
 
-	// Format: branch +N -N • clean/uncommitted changes
-	branch := gitBranchStyle.Render(status.Branch)
+	// Format:  branch +N -N • clean/uncommitted changes
+	branch := gitBranchStyle.Render("\ue725 " + status.Branch)
 
 	// Diff stats with colored additions (green) and deletions (red)
 	additions := gitAdditionsStyle.Render(fmt.Sprintf(" +%d", status.Additions))

internal/tui/styles.go

@@ -11,10 +11,8 @@ var (
 	colorGreen  = lipgloss.Color("#9ece6a") // green
 	colorYellow = lipgloss.Color("#e0af68") // yellow
 	colorBlue   = lipgloss.Color("#7aa2f7") // blue
-	/* colorPurple = lipgloss.Color("#bb9af7") // purple */
-	/* colorCyan   = lipgloss.Color("#7dcfff") // cyan */
-	colorGray  = lipgloss.Color("#565f89") // comment
-	colorWhite = lipgloss.Color("#c0caf5") // foreground
+	colorGray   = lipgloss.Color("#565f89") // comment
+	colorWhite  = lipgloss.Color("#c0caf5") // foreground
 )
 
 // Styles used for rendering the TUI (lipgloss v1 for bubbles compatibility).
@@ -32,14 +30,26 @@ var (
 	recycledStyle = lipgloss.NewStyle().
 			Foreground(colorYellow)
 
-	// Selected item style.
+	// Selected item style (matches border color).
 	selectedStyle = lipgloss.NewStyle().
-			Foreground(colorWhite).
+			Foreground(colorBlue).
 			Bold(true)
 
-	// Normal item style.
-	normalStyle = lipgloss.NewStyle().
+	// Normal item style (no color, uses terminal default).
+	normalStyle = lipgloss.NewStyle()
+
+	// Path style for subtle directory text.
+	pathStyle = lipgloss.NewStyle().
 			Foreground(colorGray)
+
+	// Prompt style for session prompt text.
+	promptStyle = lipgloss.NewStyle().
+			Foreground(colorGray).
+			Italic(true)
+
+	// Selected border style for left accent bar.
+	selectedBorderStyle = lipgloss.NewStyle().
+				Foreground(colorBlue)
 )
 
 // Banner ASCII art for the header.