feat: glint entrypoint (path / --daily / picker) and Start wiring

@@ -64,6 +64,23 @@ 	a.status = path
 	return nil
 }
 
+// Start picks the initial view: an explicit path, today's daily note, or the
+// picker when neither is given.
+func (a *App) Start(path string, daily bool) error {
+	switch {
+	case path != "":
+		return a.Load(path)
+	case daily:
+		_, cmd := a.openDaily()
+		_ = cmd
+		return nil
+	default:
+		_, cmd := a.openPicker()
+		_ = cmd
+		return nil
+	}
+}
+
 func (a *App) Init() tea.Cmd { return nil }
 
 // Update routes messages. Global keys are handled first, then mode-specific.

@@ -176,3 +176,46 @@ 	if _, err := os.Stat(a.path); err != nil {
 		t.Errorf("daily file should exist on disk: %v", err)
 	}
 }
+
+func TestStartInPickerWhenNoPath(t *testing.T) {
+	dir := t.TempDir()
+	os.WriteFile(filepath.Join(dir, "n.md"), []byte("x"), 0o644)
+	cfg := config.Default()
+	cfg.VaultDir = dir
+	a := New(cfg)
+	if err := a.Start("", false); err != nil {
+		t.Fatal(err)
+	}
+	if a.mode != ModePicker {
+		t.Errorf("no path/daily should start in picker, mode = %d", a.mode)
+	}
+}
+
+func TestStartWithPathLoadsFile(t *testing.T) {
+	dir := t.TempDir()
+	p := filepath.Join(dir, "n.md")
+	os.WriteFile(p, []byte("hello"), 0o644)
+	a := New(config.Default())
+	if err := a.Start(p, false); err != nil {
+		t.Fatal(err)
+	}
+	if a.mode != ModeEditor || string(a.editor.Bytes()) != "hello" {
+		t.Errorf("Start(path) should load file into editor")
+	}
+}
+
+func TestStartDailyCreatesFile(t *testing.T) {
+	dir := t.TempDir()
+	cfg := config.Default()
+	cfg.VaultDir = dir
+	a := New(cfg)
+	if err := a.Start("", true); err != nil {
+		t.Fatal(err)
+	}
+	if a.mode != ModeEditor || a.path == "" {
+		t.Errorf("Start(daily) should open the daily note")
+	}
+	if _, err := os.Stat(a.path); err != nil {
+		t.Errorf("daily file should exist: %v", err)
+	}
+}

@@ -0,0 +1,39 @@
+// Command glint is a modeless terminal markdown editor with live styling.
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"glint/internal/app"
+	"glint/internal/config"
+
+	tea "github.com/charmbracelet/bubbletea"
+)
+
+func main() {
+	daily := flag.Bool("daily", false, "open today's daily note")
+	flag.Parse()
+
+	cfg, err := config.Load()
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "glint: config:", err)
+	}
+
+	var path string
+	if args := flag.Args(); len(args) > 0 {
+		path = args[0]
+	}
+
+	a := app.New(cfg)
+	if err := a.Start(path, *daily); err != nil {
+		fmt.Fprintln(os.Stderr, "glint:", err)
+		os.Exit(1)
+	}
+
+	if _, err := tea.NewProgram(a, tea.WithAltScreen()).Run(); err != nil {
+		fmt.Fprintln(os.Stderr, "glint:", err)
+		os.Exit(1)
+	}
+}