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/project/project.go

@@ -0,0 +1,7 @@
+package project
+
+// Project is a lightweight workspace identified by a directory name.
+type Project struct {
+	ID   string `json:"id"`
+	Name string `json:"name"`
+}

internal/project/store.go

@@ -0,0 +1,65 @@
+package project
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"sort"
+)
+
+// Store manages project directories under DataDir/projects.
+type Store interface {
+	List() ([]Project, error)
+	Ensure(id string) error
+}
+
+// DirStore discovers projects as subdirectories of dataDir/projects.
+type DirStore struct {
+	dataDir string
+}
+
+// NewDirStore creates a project store rooted at dataDir.
+func NewDirStore(dataDir string) *DirStore {
+	return &DirStore{dataDir: dataDir}
+}
+
+func (s *DirStore) projectsRoot() string {
+	return filepath.Join(s.dataDir, "projects")
+}
+
+// List returns all project directories, sorted by name.
+func (s *DirStore) List() ([]Project, error) {
+	root := s.projectsRoot()
+	entries, err := os.ReadDir(root)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return []Project{}, nil
+		}
+		return nil, fmt.Errorf("list projects: %w", err)
+	}
+
+	var projects []Project
+	for _, e := range entries {
+		if !e.IsDir() {
+			continue
+		}
+		name := e.Name()
+		projects = append(projects, Project{ID: name, Name: name})
+	}
+	sort.Slice(projects, func(i, j int) bool {
+		return projects[i].Name < projects[j].Name
+	})
+	return projects, nil
+}
+
+// Ensure creates the project directory if it does not exist.
+func (s *DirStore) Ensure(id string) error {
+	if id == "" {
+		return fmt.Errorf("project id is required")
+	}
+	dir := filepath.Join(s.projectsRoot(), id)
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		return fmt.Errorf("create project %s: %w", id, err)
+	}
+	return nil
+}