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/config/loader_test.go

@@ -0,0 +1,83 @@
+package config_test
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"task/internal/config"
+)
+
+func TestDefaultsAndApplyDefaults(t *testing.T) {
+	home := "/tmp/fake-home"
+	cfg := config.Defaults(home)
+	if cfg.ActiveProject != config.DefaultProject {
+		t.Fatalf("ActiveProject = %q", cfg.ActiveProject)
+	}
+	wantData := filepath.Join(home, ".local", "share", config.AppName)
+	if cfg.DataDir != wantData {
+		t.Fatalf("DataDir = %q, want %q", cfg.DataDir, wantData)
+	}
+
+	partial := config.Config{}
+	partial.ApplyDefaults(home)
+	if partial.ActiveProject != config.DefaultProject || partial.DataDir != wantData {
+		t.Fatalf("ApplyDefaults failed: %+v", partial)
+	}
+}
+
+func TestSaveRoundTrip(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+
+	cfg := config.Defaults(home)
+	cfg.ActiveProject = "work"
+	if err := config.Save(&cfg); err != nil {
+		t.Fatalf("Save: %v", err)
+	}
+
+	path := config.Path(home)
+	data, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatalf("ReadFile: %v", err)
+	}
+	var got config.Config
+	if err := json.Unmarshal(data, &got); err != nil {
+		t.Fatalf("Unmarshal: %v", err)
+	}
+	if got.ActiveProject != "work" {
+		t.Fatalf("ActiveProject = %q", got.ActiveProject)
+	}
+}
+
+func TestLoadOrCreate(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+
+	cfg, err := config.LoadOrCreate()
+	if err != nil {
+		t.Fatalf("LoadOrCreate: %v", err)
+	}
+	if cfg.ActiveProject != config.DefaultProject {
+		t.Fatalf("ActiveProject = %q", cfg.ActiveProject)
+	}
+
+	cfgPath := config.Path(home)
+	if _, err := os.Stat(cfgPath); err != nil {
+		t.Fatalf("config file missing: %v", err)
+	}
+	projectDir := filepath.Join(cfg.DataDir, "projects", cfg.ActiveProject)
+	if st, err := os.Stat(projectDir); err != nil || !st.IsDir() {
+		t.Fatalf("project dir missing: %v", err)
+	}
+
+	// Second call loads existing
+	cfg2, err := config.LoadOrCreate()
+	if err != nil {
+		t.Fatalf("LoadOrCreate 2: %v", err)
+	}
+	if cfg2.DataDir != cfg.DataDir {
+		t.Fatalf("DataDir mismatch")
+	}
+}