LazyRun v1.0.0: shortcut maker untuk executable dan PWA

- Fungsi A: shortcut dari file executable (ELF/AppImage/script)
- Fungsi B: shortcut PWA/URL dengan deteksi browser (native, /opt, Flatpak)
- Checkbox Menu Aplikasi / Desktop, desktop-only pakai NoDisplay=true
- List + uninstall + deteksi shortcut yang file .desktop-nya hilang
- Metadata ~/.config/lazyrun/shortcuts.json, refresh cache XDG/KDE
- AppImage + zsync update info via build.sh

internal/browser/detect.go

@@ -0,0 +1,115 @@
+// Package browser mendeteksi browser yang terinstall untuk dipakai shortcut PWA.
+package browser
+
+import (
+	"os"
+	"os/exec"
+	"strings"
+)
+
+// Kind menentukan cara membuka URL dalam mode aplikasi.
+type Kind int
+
+const (
+	// Chromium membuka PWA dengan --app=<url>.
+	Chromium Kind = iota
+	// Firefox tidak punya mode app; dipakai --new-window.
+	Firefox
+)
+
+// Browser adalah browser siap dipanggil.
+type Browser struct {
+	Name string
+	Exec []string // argv lengkap, sudah termasuk argumen flatpak
+	Kind Kind
+}
+
+// AppArgs adalah argumen yang membuka url sebagai aplikasi.
+func (b Browser) AppArgs(url string) []string {
+	if b.Kind == Firefox {
+		return []string{"--new-window", url}
+	}
+	return []string{"--app=" + url}
+}
+
+type candidate struct {
+	name string
+	kind Kind
+	bin  []string // nama di $PATH (tanpa "/") atau path absolut
+}
+
+var candidates = []candidate{
+	{"Google Chrome", Chromium, []string{"google-chrome", "google-chrome-stable", "/opt/google/chrome/chrome"}},
+	{"Chromium", Chromium, []string{"chromium", "chromium-browser"}},
+	{"Brave", Chromium, []string{"brave-browser", "brave", "/opt/brave.com/brave/brave"}},
+	{"Microsoft Edge", Chromium, []string{"microsoft-edge", "microsoft-edge-stable"}},
+	{"Vivaldi", Chromium, []string{"vivaldi", "vivaldi-stable", "/opt/vivaldi/vivaldi"}},
+	{"Helium", Chromium, []string{"helium", "/opt/helium-browser-bin/helium"}},
+	{"Firefox", Firefox, []string{"firefox", "firefox-esr", "/usr/lib/firefox/firefox"}},
+}
+
+var flatpakApps = []struct {
+	id, name string
+	kind     Kind
+}{
+	{"com.google.Chrome", "Google Chrome (Flatpak)", Chromium},
+	{"org.chromium.Chromium", "Chromium (Flatpak)", Chromium},
+	{"com.brave.Browser", "Brave (Flatpak)", Chromium},
+	{"com.microsoft.Edge", "Microsoft Edge (Flatpak)", Chromium},
+	{"org.mozilla.firefox", "Firefox (Flatpak)", Firefox},
+}
+
+// Detect mengembalikan browser yang ada di sistem, native dulu lalu flatpak.
+func Detect() []Browser {
+	var out []Browser
+	seen := map[string]bool{}
+
+	add := func(b Browser) {
+		if !seen[b.Name] {
+			seen[b.Name] = true
+			out = append(out, b)
+		}
+	}
+
+	for _, c := range candidates {
+		for _, bin := range c.bin {
+			path := bin
+			if !strings.Contains(bin, "/") {
+				p, err := exec.LookPath(bin)
+				if err != nil {
+					continue
+				}
+				path = p
+			} else if st, err := os.Stat(bin); err != nil || st.IsDir() {
+				continue
+			}
+			add(Browser{Name: c.name, Exec: []string{path}, Kind: c.kind})
+			break
+		}
+	}
+
+	installed := flatpakList()
+	for _, f := range flatpakApps {
+		if installed[f.id] {
+			add(Browser{Name: f.name, Exec: []string{"flatpak", "run", f.id}, Kind: f.kind})
+		}
+	}
+	return out
+}
+
+func flatpakList() map[string]bool {
+	out := map[string]bool{}
+	if _, err := exec.LookPath("flatpak"); err != nil {
+		return out
+	}
+	data, err := exec.Command("flatpak", "list", "--app", "--columns=application").Output()
+	if err != nil {
+		return out
+	}
+	for _, line := range strings.Split(string(data), "\n") {
+		if id := strings.TrimSpace(line); id != "" {
+			out[id] = true
+		}
+	}
+	return out
+}