Add offline-first task-master TUI with tickets, board lists, and undo.

Charm-based CLI with JSON persistence, status/list filters, external editor editing, command-history undo/redo, and glamour markdown without AutoStyle OSC hangs.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/ui/views/markdown_test.go

@@ -0,0 +1,32 @@
+package views_test
+
+import (
+	"strings"
+	"testing"
+	"time"
+
+	"task/internal/ui/views"
+)
+
+func TestRenderMarkdownFastWithoutAutoStyle(t *testing.T) {
+	src := "## Hello\n\nSome **bold** text\n\n- a\n- b\n"
+	start := time.Now()
+	out := views.RenderMarkdown(src, 80)
+	elapsed := time.Since(start)
+	if elapsed > 2*time.Second {
+		t.Fatalf("RenderMarkdown took %v — WithAutoStyle/OSC hang likely still present", elapsed)
+	}
+	if out == "" || out == src {
+		// glamour should style bold; at least produce non-empty output
+		if strings.TrimSpace(out) == "" {
+			t.Fatal("empty output")
+		}
+	}
+	// cached path should be near-instant
+	start = time.Now()
+	_ = views.RenderMarkdown(src, 80)
+	if time.Since(start) > 500*time.Millisecond {
+		t.Fatalf("cached render too slow: %v", time.Since(start))
+	}
+	t.Logf("first=%v cached=%v", elapsed, time.Since(start))
+}