fix(analyze): ESC quits at top level, update hint text

- goBack() now calls tea.Quit when already at overview root with no history,
  so ESC exits consistently from any depth
- hint text at the top level updated from "Ctrl+C Quit" to "Esc/Q Quit"
  to reflect actual key bindings

Author: tw93

cmd/analyze/main.go

@@ -923,7 +923,7 @@ func (m model) goBack() (tea.Model, tea.Cmd) {
 		if !m.inOverviewMode() {
 			return m, m.switchToOverviewMode()
 		}
-		return m, nil
+		return m, tea.Quit
 	}
 
 	last := m.history[len(m.history)-1]

cmd/analyze/view.go

@@ -329,7 +329,7 @@ func (m model) View() string {
 		if len(m.history) > 0 {
 			fmt.Fprintf(&b, "%s↑↓←→ | Enter | R Refresh | O Open | F File | Esc Back | Q/Ctrl+C Quit%s\n", colorGray, colorReset)
 		} else {
-			fmt.Fprintf(&b, "%s↑↓→ | Enter | R Refresh | O Open | F File | Ctrl+C Quit%s\n", colorGray, colorReset)
+			fmt.Fprintf(&b, "%s↑↓→ | Enter | R Refresh | O Open | F File | Esc/Q Quit%s\n", colorGray, colorReset)
 		}
 	} else if m.showLargeFiles {
 		selectCount := len(m.largeMultiSelected)