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/ticket/jsonstore_test.go

@@ -0,0 +1,99 @@
+package ticket_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"task/internal/ticket"
+)
+
+func TestJSONStoreCreateListUpdate(t *testing.T) {
+	dir := t.TempDir()
+	store := ticket.NewJSONStore(dir)
+
+	created, err := store.Create(ticket.Ticket{
+		Title:     "Write tests",
+		ProjectID: "inbox",
+	})
+	if err != nil {
+		t.Fatalf("Create: %v", err)
+	}
+	if created.ID == "" {
+		t.Fatal("expected ID to be set")
+	}
+	if created.Status != ticket.StatusTodo {
+		t.Fatalf("status = %s, want todo", created.Status)
+	}
+
+	list, err := store.List("inbox")
+	if err != nil {
+		t.Fatalf("List: %v", err)
+	}
+	if len(list) != 1 {
+		t.Fatalf("len(list) = %d, want 1", len(list))
+	}
+
+	path := filepath.Join(dir, "projects", "inbox", "tickets.json")
+	if _, err := os.Stat(path); err != nil {
+		t.Fatalf("tickets.json missing: %v", err)
+	}
+
+	created.Status = ticket.StatusDone
+	created.Title = "Write better tests"
+	if err := store.Update(created); err != nil {
+		t.Fatalf("Update: %v", err)
+	}
+
+	got, err := store.Get(created.ID)
+	if err != nil {
+		t.Fatalf("Get: %v", err)
+	}
+	if got.Status != ticket.StatusDone || got.Title != "Write better tests" {
+		t.Fatalf("got %+v", got)
+	}
+
+	if err := store.Delete(created.ID); err != nil {
+		t.Fatalf("Delete: %v", err)
+	}
+	list, err = store.List("inbox")
+	if err != nil {
+		t.Fatalf("List after delete: %v", err)
+	}
+	if len(list) != 0 {
+		t.Fatalf("len(list) = %d, want 0", len(list))
+	}
+}
+
+func TestJSONStoreMigratesLegacyTasksJSON(t *testing.T) {
+	dir := t.TempDir()
+	projectDir := filepath.Join(dir, "projects", "inbox")
+	if err := os.MkdirAll(projectDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	legacy := `[{"id":"abc","title":"Legacy","status":"todo","projectId":"inbox","createdAt":"2024-01-01T00:00:00Z","updatedAt":"2024-01-01T00:00:00Z"}]`
+	if err := os.WriteFile(filepath.Join(projectDir, "tasks.json"), []byte(legacy), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	store := ticket.NewJSONStore(dir)
+	list, err := store.List("inbox")
+	if err != nil {
+		t.Fatalf("List: %v", err)
+	}
+	if len(list) != 1 || list[0].Title != "Legacy" {
+		t.Fatalf("got %+v", list)
+	}
+
+	// Write should create tickets.json and remove legacy.
+	list[0].Title = "Migrated"
+	if err := store.Update(list[0]); err != nil {
+		t.Fatalf("Update: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(projectDir, "tickets.json")); err != nil {
+		t.Fatalf("tickets.json missing after write: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(projectDir, "tasks.json")); !os.IsNotExist(err) {
+		t.Fatalf("legacy tasks.json should be removed, err=%v", err)
+	}
+}