Ikon otomatis dari internet + cursor mengikuti tema host

- Cari ikon online (Iconify) dari dialog install, plus tombol sync ikon per shortcut
- Auto ikon: file terdekat -> favicon situs (termasuk ikon manifest PWA) -> ikon brand
  yang namanya cocok -> ikon default; sumber ikon disimpan di metadata
- Query dibersihkan (web.whatsapp.com -> whatsapp) dan kata <4 huruf tidak dipakai
  supaya aplikasi tanpa ikon resmi tidak dapat ikon acak
- Unduhan thumbnail dibatasi 4 bersamaan + retry sekali (rate limit Iconify)
- Cursor: XCURSOR_THEME/XCURSOR_SIZE diambil dari config KDE/GTK/~/.icons default,
  dan AppImage tidak lagi membundel libX*/libwayland*/libxkbcommon (dipakai dari host)
- README: bagian ikon + integrasi desktop

README.md

@@ -12,6 +12,12 @@ AppImage, no terminal needed.
 - **Web app shortcut** — opens the URL as an app: `--app=<url>` for
   Chromium-based browsers (Chrome, Chromium, Brave, Edge, Vivaldi, Helium,
   including Flatpak builds), `--new-window` for Firefox.
+- **Icons** — three ways: pick a file, search an online icon library
+  ([Iconify](https://iconify.design), with the app name as the query), or let LazyRun
+  do it automatically: a nearby image file, the site's favicon (including high
+  resolution icons from the web app manifest), or a brand icon matched by name.
+  Every downloaded icon remembers its source, so the *sync icon* button in the list
+  can fetch it again later.
 - **Shortcut location** — checkbox for *Application menu* and/or *Desktop*,
   at least one is required. Desktop-only entries are written with
   `NoDisplay=true` so they do not show up in the menu.
@@ -23,6 +29,9 @@ AppImage, no terminal needed.
 - **i18n** — UI in English or Indonesian, chosen from `$LANG`.
 - **Self update** — AppImage with embedded zsync update information, optional
   `AppImageUpdate` integration via *Check for Updates*.
+- **Desktop integration** — uses the host cursor theme (KDE/GNOME setting is
+  forwarded to the toolkit when the session does not export it), live desktop
+  menu refresh via `update-desktop-database` and `kbuildsycoca`.
 
 ## Install
 

build.sh

@@ -46,6 +46,8 @@ else
 	export LDAI_NO_APPSTREAM=1
 fi
 
+# Library X11/Wayland/xkb/cursor tidak boleh ikut dibundel: kalau versinya beda
+# dengan host, cursor & rendering jadi tidak native (mis. cursor theme desktop tidak terpakai).
 echo "==> bundle + package AppImage"
 # hapus output lama dulu: file yang sedang dijalankan tidak bisa ditimpa langsung
 rm -f "$OUT"/lazyrun-*.AppImage "$OUT"/lazyrun-*.AppImage.zsync
@@ -53,6 +55,10 @@ rm -f "$OUT"/lazyrun-*.AppImage "$OUT"/lazyrun-*.AppImage.zsync
 	--appdir "$APPDIR" \
 	--desktop-file "$APPDIR/lazyrun.desktop" \
 	--icon-file "$APPDIR/lazyrun.png" \
+	--exclude-library "libwayland-*.so*" \
+	--exclude-library "libX*.so*" \
+	--exclude-library "libxkbcommon.so*" \
+	--exclude-library "libffi.so*" \
 	--output appimage
 
 ls -lh "$OUT"/lazyrun-*.AppImage* 2>/dev/null || true

cmd/lazyrun/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fyne.io/fyne/v2/app"
 
+	"lazyrun/internal/cursor"
 	"lazyrun/internal/ui"
 )
 
@@ -10,5 +11,6 @@ import (
 var version = "dev"
 
 func main() {
+	cursor.Apply() // sebelum app dibuat: GLFW membaca env cursor saat init
 	ui.Run(app.NewWithID("io.github.lazyrun.LazyRun"), version)
 }

internal/cursor/cursor.go

@@ -0,0 +1,89 @@
+// Package cursor meneruskan cursor theme desktop (KDE/GNOME) ke Fyne/GLFW.
+package cursor
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// Apply men-set XCURSOR_THEME dan XCURSOR_SIZE kalau sesi belum men-set-nya.
+// Fyne (GLFW) membaca env ini waktu memuat cursor, jadi panggil sebelum app dibuat.
+func Apply() {
+	if os.Getenv("XCURSOR_SIZE") == "" {
+		if _, size := desktopCursor(); size != "" {
+			os.Setenv("XCURSOR_SIZE", size)
+		}
+	}
+	if os.Getenv("XCURSOR_THEME") != "" {
+		return
+	}
+	if theme, _ := desktopCursor(); theme != "" {
+		os.Setenv("XCURSOR_THEME", theme)
+	}
+}
+
+func home() string {
+	h, _ := os.UserHomeDir()
+	return h
+}
+
+func configHome() string {
+	if v := os.Getenv("XDG_CONFIG_HOME"); v != "" {
+		return v
+	}
+	return filepath.Join(home(), ".config")
+}
+
+// desktopCursor mengambil nama & ukuran cursor dari config KDE, GTK, atau ~/.icons/default.
+func desktopCursor() (theme, size string) {
+	// KDE Plasma: ~/.config/kcminputrc
+	kde := ini(filepath.Join(configHome(), "kcminputrc"))
+	if t := kde["mouse"]["cursortheme"]; t != "" {
+		return t, kde["mouse"]["cursorsize"]
+	}
+
+	for _, gtk := range []string{"gtk-4.0", "gtk-3.0"} {
+		cfg := ini(filepath.Join(configHome(), gtk, "settings.ini"))
+		if t := cfg["settings"]["gtk-cursor-theme-name"]; t != "" {
+			return t, cfg["settings"]["gtk-cursor-theme-size"]
+		}
+	}
+
+	// fallback: theme default di ~/.icons/default/index.theme (format "Inherits=")
+	fallback := filepath.Join(home(), ".icons", "default", "index.theme")
+	if t := ini(fallback)["icon theme"]["inherits"]; t != "" {
+		return t, ""
+	}
+	return "", ""
+}
+
+// ini membaca file config berformat INI sederhana; key disimpan huruf kecil.
+func ini(path string) map[string]map[string]string {
+	out := map[string]map[string]string{}
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return out
+	}
+
+	section := ""
+	for _, line := range strings.Split(string(data), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") || strings.HasPrefix(line, ";") {
+			continue
+		}
+		if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
+			section = strings.ToLower(strings.Trim(line, "[]"))
+			continue
+		}
+		key, value, ok := strings.Cut(line, "=")
+		if !ok {
+			continue
+		}
+		if out[section] == nil {
+			out[section] = map[string]string{}
+		}
+		out[section][strings.ToLower(strings.TrimSpace(key))] = strings.TrimSpace(value)
+	}
+	return out
+}

internal/cursor/cursor_test.go

@@ -0,0 +1,76 @@
+package cursor
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestIniParsesSections(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "index.theme")
+	body := "# komentar\n[Icon Theme]\nName=default\nInherits=Breeze_Cursors\n\n[Other]\nX=1\n"
+	if err := os.WriteFile(path, []byte(body), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got := ini(path)
+	if got["icon theme"]["inherits"] != "Breeze_Cursors" {
+		t.Errorf("Inherits salah: %q", got["icon theme"]["inherits"])
+	}
+	if got["other"]["x"] != "1" {
+		t.Errorf("section lain salah: %+v", got)
+	}
+}
+
+func TestDesktopCursorFromKDE(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	t.Setenv("XDG_CONFIG_HOME", filepath.Join(home, ".config"))
+
+	dir := filepath.Join(home, ".config")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "kcminputrc"), []byte("[Mouse]\ncursorTheme=material_cursors\ncursorSize=36\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	theme, size := desktopCursor()
+	if theme != "material_cursors" || size != "36" {
+		t.Errorf("desktopCursor() = %q, %q", theme, size)
+	}
+}
+
+func TestApplySetsEnvWhenEmpty(t *testing.T) {
+	home := t.TempDir()
+	t.Setenv("HOME", home)
+	t.Setenv("XDG_CONFIG_HOME", filepath.Join(home, ".config"))
+	t.Setenv("XCURSOR_THEME", "")
+	t.Setenv("XCURSOR_SIZE", "")
+
+	dir := filepath.Join(home, ".config")
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "kcminputrc"), []byte("[Mouse]\ncursorTheme=material_cursors\ncursorSize=36\n"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	Apply()
+	if got := os.Getenv("XCURSOR_THEME"); got != "material_cursors" {
+		t.Errorf("XCURSOR_THEME = %q", got)
+	}
+	if got := os.Getenv("XCURSOR_SIZE"); got != "36" {
+		t.Errorf("XCURSOR_SIZE = %q", got)
+	}
+}
+
+func TestApplyKeepsExistingEnv(t *testing.T) {
+	t.Setenv("XCURSOR_THEME", "Breeze_Cursors")
+	t.Setenv("XCURSOR_SIZE", "24")
+
+	Apply()
+	if got := os.Getenv("XCURSOR_THEME"); got != "Breeze_Cursors" {
+		t.Errorf("env yang sudah ada tidak boleh ditimpa, dapat %q", got)
+	}
+}

internal/icon/favicon.go

@@ -3,6 +3,7 @@ package icon
 
 import (
 	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -26,6 +27,7 @@ var (
 )
 
 // Fetch mengambil favicon dari halaman. Return data + ekstensi file (".png", ".jpg", ".svg").
+// Urutan: ikon dari web app manifest (paling besar) → <link rel=icon> → /favicon.ico.
 func Fetch(pageURL string) ([]byte, string, error) {
 	base, err := url.Parse(pageURL)
 	if err != nil {
@@ -53,6 +55,66 @@ func Fetch(pageURL string) ([]byte, string, error) {
 	return nil, "", lastErr
 }
 
+// manifestIcons membaca <link rel=manifest> lalu daftar ikonnya,
+// diurutkan dari ukuran terbesar. Gagal parse bukan error: cukup dilewati.
+func manifestIcons(page *url.URL) []iconCandidate {
+	html, err := get(page.String())
+	if err != nil {
+		return nil
+	}
+	var manifestURL string
+	for _, tag := range linkTag.FindAllString(string(html), -1) {
+		if !strings.Contains(strings.ToLower(attr(relAttr, tag)), "manifest") {
+			continue
+		}
+		if href := attr(hrefAttr, tag); href != "" {
+			if ref, err := url.Parse(href); err == nil {
+				manifestURL = page.ResolveReference(ref).String()
+			}
+			break
+		}
+	}
+	if manifestURL == "" {
+		return nil
+	}
+
+	data, err := get(manifestURL)
+	if err != nil {
+		return nil
+	}
+	var manifest struct {
+		Icons []struct {
+			Src   string `json:"src"`
+			Sizes string `json:"sizes"`
+		} `json:"icons"`
+	}
+	if err := json.Unmarshal(data, &manifest); err != nil {
+		return nil
+	}
+
+	base, err := url.Parse(manifestURL)
+	if err != nil {
+		return nil
+	}
+	var candidates []iconCandidate
+	for _, entry := range manifest.Icons {
+		if entry.Src == "" {
+			continue
+		}
+		ref, err := url.Parse(entry.Src)
+		if err != nil {
+			continue
+		}
+		score := 0
+		if size := attr(sizeAttr, `sizes="`+entry.Sizes+`"`); size != "" {
+			fmt.Sscanf(size, "%d", &score)
+		}
+		candidates = append(candidates, iconCandidate{base.ResolveReference(ref).String(), score})
+	}
+	sort.SliceStable(candidates, func(i, j int) bool { return candidates[i].score > candidates[j].score })
+	return candidates
+}
+
 // iconCandidate adalah kandidat URL ikon dengan skor prioritas.
 type iconCandidate struct {
 	url   string
@@ -90,6 +152,7 @@ func iconCandidates(base *url.URL) []string {
 	}
 
 	sort.SliceStable(found, func(i, j int) bool { return found[i].score > found[j].score })
+	found = append(manifestIcons(base), found...)
 
 	out := make([]string, 0, len(found)+1)
 	seen := map[string]bool{}

internal/icon/install.go

@@ -36,6 +36,14 @@ func Default(slug string) (string, error) {
 	return SaveBytes(assets.Icon, ".png", slug)
 }
 
+// Nearby mencari file ikon bernama base.* di folder dir (dipakai untuk auto-deteksi).
+func Nearby(dir, base string) string {
+	if dir == "" || base == "" {
+		return ""
+	}
+	return findNearby(dir, base)
+}
+
 func findNearby(dir, base string) string {
 	base = strings.ToLower(base)
 	for _, ext := range exts {
@@ -78,5 +86,14 @@ func SaveBytes(data []byte, ext, slug string) (string, error) {
 	return dest, os.WriteFile(dest, data, 0o644)
 }
 
+// SaveData menyimpan ikon yang sudah ada di memori (mis. hasil pencarian online).
+func SaveData(data []byte, slug string) (string, error) {
+	ext := sniffExt(data)
+	if ext == "" {
+		return "", errors.New("unsupported icon format")
+	}
+	return SaveBytes(data, ext, slug)
+}
+
 // IconBytes adalah ikon default LazyRun.
 func IconBytes() []byte { return assets.Icon }

internal/icon/online.go

@@ -0,0 +1,174 @@
+package icon
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"net/url"
+	"sort"
+	"strings"
+	"time"
+	"unicode"
+)
+
+var iconifyBase = "https://api.iconify.design"
+
+// SetSearchEndpoint mengarahkan pencarian ikon ke endpoint lain (dipakai tes).
+func SetSearchEndpoint(base string) { iconifyBase = base }
+
+// Result adalah satu ikon dari pencarian online.
+type Result struct {
+	Name string // contoh: "logos:whatsapp-icon"
+	URL  string // URL SVG siap diunduh
+}
+
+// ShortName mengembalikan nama ikon tanpa prefix koleksi.
+func (r Result) ShortName() string {
+	_, name, ok := strings.Cut(r.Name, ":")
+	if !ok {
+		return r.Name
+	}
+	return name
+}
+
+// Search mencari ikon di Iconify berdasarkan kata kunci.
+func Search(query string, limit int) ([]Result, error) {
+	query = strings.TrimSpace(query)
+	if query == "" {
+		return nil, errors.New("search query is empty")
+	}
+	if limit <= 0 {
+		limit = 32
+	}
+
+	endpoint := fmt.Sprintf("%s/search?query=%s&limit=%d", iconifyBase, url.QueryEscape(query), limit)
+	data, err := get(endpoint)
+	if err != nil {
+		return nil, err
+	}
+
+	var payload struct {
+		Icons []string `json:"icons"`
+	}
+	if err := json.Unmarshal(data, &payload); err != nil {
+		return nil, err
+	}
+
+	results := make([]Result, 0, len(payload.Icons))
+	for _, name := range payload.Icons {
+		prefix, icon, ok := strings.Cut(name, ":")
+		if !ok {
+			continue
+		}
+		// height=256 supaya SVG-nya punya ukuran eksplisit (bukan "1em")
+		results = append(results, Result{
+			Name: name,
+			URL:  fmt.Sprintf("%s/%s/%s.svg?height=256", iconifyBase, url.PathEscape(prefix), url.PathEscape(icon)),
+		})
+	}
+	if len(results) == 0 {
+		return nil, errors.New("no icon found for " + query)
+	}
+	return results, nil
+}
+
+// SearchBest mencoba beberapa variasi kata kunci supaya nama seperti
+// "web.whatsapp.com" atau "WhatsApp Web" tetap menemukan ikon.
+func SearchBest(query string, limit int) ([]Result, error) {
+	for _, candidate := range queryVariants(query) {
+		if results, err := Search(candidate, limit); err == nil {
+			return results, nil
+		}
+	}
+	return nil, errors.New("no icon found for " + strings.TrimSpace(query))
+}
+
+// Find mengambil hasil pertama yang namanya cocok dengan kata kunci,
+// supaya ikon acak tidak dipasang ke aplikasi yang namanya tidak dikenal.
+func Find(query string) (Result, bool) {
+	for _, candidate := range queryVariants(query) {
+		results, err := Search(candidate, 32)
+		if err != nil {
+			continue
+		}
+		want := slug(candidate)
+		for _, r := range results {
+			name := slug(r.ShortName())
+			if name == want || strings.Contains(name, want) || strings.Contains(want, name) {
+				return r, true
+			}
+		}
+	}
+	return Result{}, false
+}
+
+// QueryHint mengembalikan kata kunci paling bermakna dari sebuah nama,
+// dipakai untuk mengisi kolom pencarian ikon.
+func QueryHint(query string) string {
+	variants := queryVariants(query)
+	if len(variants) > 1 {
+		return variants[1]
+	}
+	return strings.TrimSpace(query)
+}
+
+// queryVariants menyusun kandidat kata kunci: teks asli dulu, lalu kata-kata
+// yang lebih sederhana (kata terpanjang didahulukan). Kata < 4 huruf dibuang
+// supaya pencarian tidak jatuh ke ikon acak.
+func queryVariants(query string) []string {
+	query = strings.TrimSpace(query)
+	if query == "" {
+		return nil
+	}
+
+	out := []string{query}
+	base := query
+	// host seperti "web.whatsapp.com" → buang TLD-nya
+	if !strings.Contains(base, " ") && strings.Contains(base, ".") {
+		parts := strings.Split(base, ".")
+		if len(parts) > 1 {
+			base = strings.Join(parts[:len(parts)-1], " ")
+		}
+	}
+
+	words := strings.FieldsFunc(base, func(r rune) bool {
+		return !unicode.IsLetter(r) && !unicode.IsDigit(r)
+	})
+	sort.SliceStable(words, func(i, j int) bool { return len(words[i]) > len(words[j]) })
+	for _, word := range words {
+		if len(word) < 4 || strings.EqualFold(word, query) {
+			continue
+		}
+		out = append(out, word)
+	}
+	return out
+}
+
+// FromURL mengunduh ikon dari URL dan menebak ekstensinya dari isi file.
+func FromURL(rawURL string) ([]byte, string, error) {
+	data, err := get(rawURL)
+	if err != nil {
+		// sekali coba lagi: API ikon publik kadang membatasi permintaan beruntun
+		time.Sleep(600 * time.Millisecond)
+		data, err = get(rawURL)
+	}
+	if err != nil {
+		return nil, "", err
+	}
+	ext := sniffExt(data)
+	if ext == "" {
+		return nil, "", fmt.Errorf("unsupported icon format at %s", rawURL)
+	}
+	return data, ext, nil
+}
+
+// slug menyamakan nama untuk perbandingan (huruf kecil, tanpa pemisah).
+func slug(s string) string {
+	var b strings.Builder
+	for _, r := range strings.ToLower(s) {
+		if r >= 'a' && r <= 'z' || r >= '0' && r <= '9' {
+			b.WriteRune(r)
+		}
+	}
+	return b.String()
+}

internal/icon/online_test.go

@@ -0,0 +1,135 @@
+package icon
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func fakeIconify(t *testing.T) *httptest.Server {
+	t.Helper()
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/search":
+			got := r.URL.Query().Get("query")
+			if got == "" {
+				http.Error(w, "no query", http.StatusBadRequest)
+				return
+			}
+			// ikon whatsapp hanya untuk query "whatsapp" polos, supaya fallback ikut teruji
+			if !strings.Contains(strings.ToLower(got), "whatsapp") || strings.Contains(got, ".") {
+				_, _ = w.Write([]byte(`{"icons":[],"total":0}`))
+				return
+			}
+			_, _ = w.Write([]byte(`{"icons":["ic:baseline-whatsapp","mdi:whatsapp","logos:whatsapp-icon"],"total":3}`))
+		case "/logos/whatsapp-icon.svg":
+			w.Header().Set("Content-Type", "image/svg+xml")
+			_, _ = w.Write([]byte(`<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256"></svg>`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	t.Cleanup(srv.Close)
+	return srv
+}
+
+func TestSearchBuildsDownloadURLs(t *testing.T) {
+	srv := fakeIconify(t)
+	SetSearchEndpoint(srv.URL)
+	t.Cleanup(func() { SetSearchEndpoint("https://api.iconify.design") })
+
+	results, err := Search("whatsapp", 5)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(results) != 3 {
+		t.Fatalf("hasil pencarian = %d, mau 3", len(results))
+	}
+	if results[0].Name != "ic:baseline-whatsapp" || results[0].ShortName() != "baseline-whatsapp" {
+		t.Errorf("hasil pertama salah: %+v", results[0])
+	}
+	if results[2].URL != srv.URL+"/logos/whatsapp-icon.svg?height=256" {
+		t.Errorf("URL unduhan salah: %s", results[2].URL)
+	}
+}
+
+func TestQueryHintAndSearchBest(t *testing.T) {
+	srv := fakeIconify(t)
+	SetSearchEndpoint(srv.URL)
+	t.Cleanup(func() { SetSearchEndpoint("https://api.iconify.design") })
+
+	// nama seperti host: TLD dibuang, kata terpanjang dipakai
+	if got := QueryHint("web.whatsapp.com"); got != "whatsapp" {
+		t.Errorf("QueryHint(host) = %q", got)
+	}
+	if got := QueryHint("WhatsApp Web"); got != "WhatsApp" {
+		t.Errorf("QueryHint(nama) = %q", got)
+	}
+	if got := QueryHint(""); got != "" {
+		t.Errorf("QueryHint(kosong) = %q", got)
+	}
+
+	// query mentah gagal, tapi varian "whatsapp" berhasil
+	results, err := SearchBest("web.whatsapp.com", 5)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(results) != 3 {
+		t.Errorf("SearchBest() = %d hasil", len(results))
+	}
+}
+
+func TestFindIgnoresGenericWords(t *testing.T) {
+	srv := fakeIconify(t)
+	SetSearchEndpoint(srv.URL)
+	t.Cleanup(func() { SetSearchEndpoint("https://api.iconify.design") })
+
+	// kata <= 3 huruf ("my", "go", "app") tidak boleh dipakai untuk mencari
+	if _, ok := Find("my-go-app"); ok {
+		t.Error("nama tanpa ikon resmi harus gagal, bukan dapat ikon acak")
+	}
+}
+
+func TestSearchEmptyQuery(t *testing.T) {
+	if _, err := Search("  ", 5); err == nil {
+		t.Error("query kosong harus error")
+	}
+}
+
+func TestFindPicksMatchingName(t *testing.T) {
+	srv := fakeIconify(t)
+	SetSearchEndpoint(srv.URL)
+	t.Cleanup(func() { SetSearchEndpoint("https://api.iconify.design") })
+
+	// "WhatsApp Web" harus cocok dengan ikon bernama whatsapp, bukan hasil acak.
+	// (hasil pertama "ic:baseline-whatsapp" tidak cocok karena namanya lebih panjang,
+	// jadi yang dipakai "mdi:whatsapp")
+	got, ok := Find("WhatsApp Web")
+	if !ok {
+		t.Fatal("Find() tidak menemukan kandidat")
+	}
+	if got.Name != "mdi:whatsapp" {
+		t.Errorf("ikon terpilih = %s", got.Name)
+	}
+
+	// Nama yang tidak berhubungan tidak boleh dipaksa memakai ikon apa pun.
+	if _, ok := Find("zzz-tidak-ada-xyz"); ok {
+		t.Error("nama asing tidak boleh dapat ikon acak")
+	}
+}
+
+func TestFromURLSniffsFormat(t *testing.T) {
+	srv := fakeIconify(t)
+	data, ext, err := FromURL(srv.URL + "/logos/whatsapp-icon.svg")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if ext != ".svg" || len(data) == 0 {
+		t.Errorf("FromURL = ext %q, %d byte", ext, len(data))
+	}
+
+	if _, _, err := FromURL(srv.URL + "/tidak-ada"); err == nil {
+		t.Error("URL 404 harus error")
+	}
+}

internal/shortcut/executable.go

@@ -9,7 +9,6 @@ import (
 	"strings"
 	"time"
 
-	"lazyrun/internal/icon"
 	"lazyrun/internal/store"
 	"lazyrun/internal/xdg"
 )
@@ -17,7 +16,9 @@ import (
 // ExecOptions adalah input Fungsi A: shortcut dari file executable.
 type ExecOptions struct {
 	BinaryPath string
-	IconPath   string // opsional
+	IconPath   string // opsional: file ikon
+	IconURL    string // opsional: URL ikon
+	IconData   []byte // opsional: ikon yang sudah diunduh UI
 	Name       string
 	Category   string
 	Menu       bool
@@ -51,7 +52,15 @@ func InstallExecutable(o ExecOptions) (store.Shortcut, error) {
 			return sc, err
 		}
 	}
-	iconPath, err := icon.Save(o.IconPath, filepath.Dir(o.BinaryPath), strings.TrimSuffix(filepath.Base(o.BinaryPath), filepath.Ext(o.BinaryPath)), sl)
+	iconPath, iconSource, err := installIconFor(iconOptions{
+		IconPath:   o.IconPath,
+		IconURL:    o.IconURL,
+		IconData:   o.IconData,
+		NearbyDir:  filepath.Dir(o.BinaryPath),
+		NearbyBase: strings.TrimSuffix(filepath.Base(o.BinaryPath), filepath.Ext(o.BinaryPath)),
+		Query:      name,
+		Slug:       sl,
+	})
 	if err != nil {
 		return sc, err
 	}
@@ -74,6 +83,7 @@ func InstallExecutable(o ExecOptions) (store.Shortcut, error) {
 		ExecArgs:    entry.ExecArgs,
 		BinaryPath:  binDst,
 		IconPath:    iconPath,
+		IconSource:  iconSource,
 		DesktopPath: deskDst,
 		Targets:     store.Targets{Menu: o.Menu, Desktop: o.Desktop},
 		InstalledAt: time.Now().UTC(),
@@ -94,7 +104,9 @@ type WebOptions struct {
 	URL      string
 	Name     string
 	Browser  BrowserArg
-	IconPath string // opsional; kosong = auto-fetch favicon
+	IconPath string // opsional: file ikon
+	IconURL  string // opsional: URL ikon
+	IconData []byte // opsional: ikon yang sudah diunduh UI
 	Menu     bool
 	Desktop  bool
 }
@@ -129,7 +141,14 @@ func InstallWebApp(o WebOptions) (store.Shortcut, error) {
 		return sc, fmt.Errorf("shortcut %q already exists, uninstall it first", name)
 	}
 
-	iconPath, err := installWebIcon(o.IconPath, pageURL, sl)
+	iconPath, iconSource, err := installIconFor(iconOptions{
+		IconPath: o.IconPath,
+		IconURL:  o.IconURL,
+		IconData: o.IconData,
+		PageURL:  pageURL,
+		Query:    name,
+		Slug:     sl,
+	})
 	if err != nil {
 		return sc, err
 	}
@@ -159,6 +178,7 @@ func InstallWebApp(o WebOptions) (store.Shortcut, error) {
 		Browser:     strings.Join(o.Browser.Exec, " "),
 		ExecArgs:    entry.ExecArgs,
 		IconPath:    iconPath,
+		IconSource:  iconSource,
 		DesktopPath: deskDst,
 		Targets:     store.Targets{Menu: o.Menu, Desktop: o.Desktop},
 		InstalledAt: time.Now().UTC(),
@@ -174,16 +194,6 @@ func InstallWebApp(o WebOptions) (store.Shortcut, error) {
 	return sc, nil
 }
 
-func installWebIcon(userIcon, pageURL, slug string) (string, error) {
-	if userIcon != "" {
-		return icon.Save(userIcon, "", "", slug)
-	}
-	if data, ext, err := icon.Fetch(pageURL); err == nil {
-		return icon.SaveBytes(data, ext, slug)
-	}
-	return icon.Default(slug)
-}
-
 func category(c, fallback string) string {
 	c = strings.TrimSpace(c)
 	if c == "" {

internal/shortcut/icons.go

@@ -0,0 +1,134 @@
+package shortcut
+
+import (
+	"errors"
+	"os"
+	"strings"
+
+	"lazyrun/internal/icon"
+	"lazyrun/internal/store"
+)
+
+// Prefix sumber ikon yang disimpan di metadata, dipakai untuk sync ulang.
+const (
+	iconSourceFile    = "file:"
+	iconSourceFavicon = "favicon:"
+	iconSourceSearch  = "search:"
+)
+
+type iconOptions struct {
+	IconPath   string // file pilihan user
+	IconURL    string // URL ikon pilihan user
+	IconData   []byte // ikon pilihan user yang sudah diunduh UI
+	NearbyDir  string // folder binary, untuk auto-deteksi ikon di sebelahnya
+	NearbyBase string
+	PageURL    string // halaman PWA, untuk favicon
+	Query      string // nama aplikasi, untuk cari ikon online
+	Slug       string
+}
+
+// installIconFor menentukan ikon shortcut dan sumbernya.
+// Urutan: file user → URL user → ikon di folder binary → favicon situs → cari online → ikon default.
+func installIconFor(o iconOptions) (path, source string, err error) {
+	if o.IconPath != "" {
+		path, err = icon.Save(o.IconPath, "", "", o.Slug)
+		return path, iconSourceFile + o.IconPath, err
+	}
+	if len(o.IconData) > 0 && o.IconURL != "" {
+		if path, err := icon.SaveData(o.IconData, o.Slug); err == nil {
+			return path, o.IconURL, nil
+		}
+	}
+	if o.IconURL != "" {
+		if data, ext, err := icon.FromURL(o.IconURL); err == nil {
+			path, err := icon.SaveBytes(data, ext, o.Slug)
+			return path, o.IconURL, err
+		}
+	}
+	if nearby := icon.Nearby(o.NearbyDir, o.NearbyBase); nearby != "" {
+		path, err = icon.Save(nearby, "", "", o.Slug)
+		return path, iconSourceFile + nearby, err
+	}
+	if o.PageURL != "" {
+		if data, ext, err := icon.Fetch(o.PageURL); err == nil {
+			path, err := icon.SaveBytes(data, ext, o.Slug)
+			return path, iconSourceFavicon + o.PageURL, err
+		}
+	}
+	if o.Query != "" {
+		if result, ok := icon.Find(o.Query); ok {
+			if data, ext, err := icon.FromURL(result.URL); err == nil {
+				path, err := icon.SaveBytes(data, ext, o.Slug)
+				return path, iconSourceSearch + o.Query, err
+			}
+		}
+	}
+	path, err = icon.Default(o.Slug)
+	return path, "", err
+}
+
+// RefreshIcon mengunduh ulang ikon shortcut dari sumber online-nya (sync manual).
+func RefreshIcon(sc store.Shortcut) (string, error) {
+	var data []byte
+	var ext string
+	var err error
+
+	switch {
+	case sc.IconSource == "":
+		return "", errors.New("this icon has no online source")
+	case strings.HasPrefix(sc.IconSource, iconSourceFavicon):
+		data, ext, err = icon.Fetch(strings.TrimPrefix(sc.IconSource, iconSourceFavicon))
+	case strings.HasPrefix(sc.IconSource, iconSourceSearch):
+		result, ok := icon.Find(strings.TrimPrefix(sc.IconSource, iconSourceSearch))
+		if !ok {
+			return "", errors.New("no matching icon found online anymore")
+		}
+		data, ext, err = icon.FromURL(result.URL)
+	case strings.HasPrefix(sc.IconSource, "http"):
+		data, ext, err = icon.FromURL(sc.IconSource)
+	default:
+		return "", errors.New("this icon comes from a local file, not the internet")
+	}
+	if err != nil {
+		return "", err
+	}
+
+	path, err := icon.SaveBytes(data, ext, sc.Slug)
+	if err != nil {
+		return "", err
+	}
+	if sc.IconPath != "" && sc.IconPath != path {
+		_ = os.Remove(sc.IconPath)
+	}
+	if err := replaceIconLine(sc.DesktopPath, path); err != nil {
+		return path, err
+	}
+	if sc.DesktopCopyPath != "" {
+		if err := replaceIconLine(sc.DesktopCopyPath, path); err != nil {
+			return path, err
+		}
+	}
+	go RefreshCache()
+	return path, nil
+}
+
+// replaceIconLine menimpa baris Icon= di file .desktop tanpa mengubah mode file.
+func replaceIconLine(path, iconPath string) error {
+	info, err := os.Stat(path)
+	if err != nil {
+		return err
+	}
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	lines := strings.Split(string(data), "\n")
+	for i, line := range lines {
+		if strings.HasPrefix(line, "Icon=") {
+			lines[i] = "Icon=" + escapeValue(iconPath)
+			break
+		}
+	}
+	return os.WriteFile(path, []byte(strings.Join(lines, "\n")), info.Mode().Perm())
+}

internal/shortcut/icons_test.go

@@ -0,0 +1,194 @@
+package shortcut
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"lazyrun/internal/icon"
+	"lazyrun/internal/store"
+)
+
+// iconSetEndpoint mengarahkan pencarian ikon ke server tes.
+func iconSetEndpoint(t *testing.T, base string) {
+	t.Helper()
+	icon.SetSearchEndpoint(base)
+	t.Cleanup(func() { icon.SetSearchEndpoint("http://127.0.0.1:1") })
+}
+
+func TestRefreshIconFromURL(t *testing.T) {
+	testEnv(t)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write(append(pngMagic, []byte("ikon-baru")...))
+	}))
+	defer srv.Close()
+
+	deskDst := filepath.Join(t.TempDir(), "x.desktop")
+	old := Entry{Name: "X", ExecArgs: []string{"/x"}, Icon: "/lama/icon.png"}
+	if err := WriteDesktop(deskDst, old); err != nil {
+		t.Fatal(err)
+	}
+
+	sc := store.Shortcut{
+		Slug:        "x",
+		Name:        "X",
+		IconPath:    "/lama/icon.png",
+		IconSource:  srv.URL + "/icon.png",
+		DesktopPath: deskDst,
+	}
+	path, err := RefreshIcon(sc)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if filepath.Base(path) != "x.png" {
+		t.Errorf("ikon baru di %s", path)
+	}
+	if data, err := os.ReadFile(path); err != nil || len(data) == 0 {
+		t.Errorf("ikon tidak tertulis: %v", err)
+	}
+
+	content, err := os.ReadFile(deskDst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.Contains(string(content), "Icon="+path+"\n") {
+		t.Errorf("baris Icon= tidak diperbarui:\n%s", content)
+	}
+}
+
+func TestRefreshIconKeepsDesktopCopyMode(t *testing.T) {
+	home := testEnv(t)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		_, _ = w.Write(append(pngMagic, []byte("baru")...))
+	}))
+	defer srv.Close()
+
+	deskDst := filepath.Join(home, ".local/share/applications/y.desktop")
+	copyDst := filepath.Join(home, "Desktop", "y.desktop")
+	for _, path := range []string{deskDst, copyDst} {
+		if err := WriteDesktop(path, Entry{Name: "Y", ExecArgs: []string{"/y"}, Icon: "/lama.png"}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if err := os.Chmod(copyDst, 0o755); err != nil {
+		t.Fatal(err)
+	}
+
+	sc := store.Shortcut{
+		Slug:            "y",
+		IconSource:      srv.URL,
+		DesktopPath:     deskDst,
+		DesktopCopyPath: copyDst,
+	}
+	if _, err := RefreshIcon(sc); err != nil {
+		t.Fatal(err)
+	}
+	st, err := os.Stat(copyDst)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if st.Mode().Perm()&0o111 == 0 {
+		t.Errorf("salinan desktop kehilangan mode executable: %v", st.Mode())
+	}
+}
+
+func TestRefreshIconWithoutOnlineSource(t *testing.T) {
+	testEnv(t)
+	sc := store.Shortcut{Slug: "z", IconSource: "file:/tmp/icon.png", DesktopPath: "/tmp/z.desktop"}
+	if _, err := RefreshIcon(sc); err == nil {
+		t.Error("ikon dari file lokal harus error, bukan diunduh")
+	}
+}
+
+func TestInstallExecutableSearchesIconOnline(t *testing.T) {
+	home := testEnv(t)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case strings.HasPrefix(r.URL.Path, "/search"):
+			_, _ = w.Write([]byte(`{"icons":["mdi:winbox"]}`))
+		case r.URL.Path == "/mdi/winbox.svg":
+			_, _ = w.Write([]byte(`<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256"></svg>`))
+		default:
+			http.NotFound(w, r)
+		}
+	}))
+	defer srv.Close()
+	iconSetEndpoint(t, srv.URL)
+
+	src := fakeBinary(t, home, "winbox")
+	sc, err := InstallExecutable(ExecOptions{BinaryPath: src, Name: "Winbox", Menu: true})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sc.IconSource != "search:Winbox" {
+		t.Errorf("icon_source = %q", sc.IconSource)
+	}
+	if filepath.Ext(sc.IconPath) != ".svg" {
+		t.Errorf("ikon online harus tersimpan sebagai .svg, dapat %s", sc.IconPath)
+	}
+}
+
+func TestInstallWebAppUsesIconURL(t *testing.T) {
+	testEnv(t)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/pilih.svg":
+			w.Header().Set("Content-Type", "image/svg+xml")
+			_, _ = w.Write([]byte(`<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256"></svg>`))
+		case "/":
+			_, _ = w.Write([]byte(`<html><head><link rel="icon" href="/situs.png"></head></html>`))
+		default:
+			_, _ = w.Write(append(pngMagic, []byte("favicon-situs")...))
+		}
+	}))
+	defer srv.Close()
+
+	sc, err := InstallWebApp(WebOptions{
+		URL:     "https://example.com",
+		Name:    "Example",
+		Browser: BrowserArg{Name: "Chromium", Exec: []string{"/usr/bin/chromium"}},
+		IconURL: srv.URL + "/pilih.svg",
+		Menu:    true,
+		Desktop: true,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sc.IconSource != srv.URL+"/pilih.svg" {
+		t.Errorf("ikon pilihan user harus dipakai, icon_source = %q", sc.IconSource)
+	}
+	if filepath.Ext(sc.IconPath) != ".svg" {
+		t.Errorf("ikon = %s", sc.IconPath)
+	}
+}
+
+func TestInstallWebAppUsesIconDataFromUI(t *testing.T) {
+	testEnv(t)
+
+	svg := []byte(`<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256"></svg>`)
+	sc, err := InstallWebApp(WebOptions{
+		URL:      "https://example.com",
+		Name:     "Example",
+		Browser:  BrowserArg{Name: "Chromium", Exec: []string{"/usr/bin/chromium"}},
+		IconURL:  "https://api.iconify.design/mdi/example.svg?height=256",
+		IconData: svg, // sudah diunduh UI: tidak perlu request ulang
+		Menu:     true,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if sc.IconSource != "https://api.iconify.design/mdi/example.svg?height=256" {
+		t.Errorf("icon_source = %q", sc.IconSource)
+	}
+	data, err := os.ReadFile(sc.IconPath)
+	if err != nil || string(data) != string(svg) {
+		t.Errorf("ikon tersimpan salah: %v %d byte", err, len(data))
+	}
+}

internal/shortcut/install_test.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 	"testing"
 
+	"lazyrun/internal/icon"
 	"lazyrun/internal/store"
 )
 
@@ -22,6 +23,8 @@ func testEnv(t *testing.T) string {
 	t.Setenv("XDG_DATA_HOME", "")
 	t.Setenv("XDG_CONFIG_HOME", "")
 	t.Setenv("PATH", "")
+	// tes tidak boleh menyentuh internet: arahkan pencarian ikon ke port mati
+	icon.SetSearchEndpoint("http://127.0.0.1:1")
 	return home
 }
 

internal/store/store.go

@@ -30,6 +30,7 @@ type Shortcut struct {
 	ExecArgs        []string  `json:"exec_args,omitempty"`
 	BinaryPath      string    `json:"binary_path,omitempty"`
 	IconPath        string    `json:"icon_path,omitempty"`
+	IconSource      string    `json:"icon_source,omitempty"`
 	DesktopPath     string    `json:"desktop_path"`
 	DesktopCopyPath string    `json:"desktop_copy_path,omitempty"`
 	Targets         Targets   `json:"targets"`

internal/ui/dialog_executable.go

@@ -11,6 +11,7 @@ import (
 	"fyne.io/fyne/v2/theme"
 	"fyne.io/fyne/v2/widget"
 
+	"lazyrun/internal/icon"
 	"lazyrun/internal/shortcut"
 	"lazyrun/internal/store"
 )
@@ -26,7 +27,8 @@ var (
 )
 
 func (ui *app) showExecutableDialog() {
-	var binPath, iconPath string
+	var binPath, iconPath, iconURL string
+	var iconData []byte
 
 	binLabel := muted(T("none"))
 	iconLabel := muted(T("icon_auto"))
@@ -50,10 +52,16 @@ func (ui *app) showExecutableDialog() {
 	})
 	browseIcon := widget.NewButtonWithIcon(T("browse"), theme.FolderOpenIcon(), func() {
 		pickFile(ui.win, imageFilter, func(path string) {
-			iconPath = path
+			iconPath, iconURL, iconData = path, "", nil
 			iconLabel.SetText(filepath.Base(path))
 		})
 	})
+	onlineIcon := widget.NewButtonWithIcon(T("online"), theme.SearchIcon(), func() {
+		ui.showIconSearch(nameEntry.Text, func(result icon.Result, data []byte) {
+			iconURL, iconPath, iconData = result.URL, "", data
+			iconLabel.SetText(result.Name)
+		})
+	})
 
 	var d *dialog.CustomDialog
 	install := widget.NewButtonWithIcon(T("install"), theme.DownloadIcon(), func() {
@@ -71,6 +79,8 @@ func (ui *app) showExecutableDialog() {
 		opts := shortcut.ExecOptions{
 			BinaryPath: binPath,
 			IconPath:   iconPath,
+			IconURL:    iconURL,
+			IconData:   iconData,
 			Name:       nameEntry.Text,
 			Category:   category.Selected,
 			Menu:       menu.Checked,
@@ -85,7 +95,8 @@ func (ui *app) showExecutableDialog() {
 
 	form := widget.NewForm(
 		widget.NewFormItem(T("field_binary"), container.NewBorder(nil, nil, nil, browseBin, binLabel)),
-		widget.NewFormItem(T("field_icon"), container.NewBorder(nil, nil, nil, browseIcon, iconLabel)),
+		widget.NewFormItem(T("field_icon"), container.NewBorder(nil, nil, nil,
+			container.NewHBox(onlineIcon, browseIcon), iconLabel)),
 		widget.NewFormItem(T("field_name"), nameEntry),
 		widget.NewFormItem(T("field_category"), category),
 	)

internal/ui/dialog_icon.go

@@ -0,0 +1,96 @@
+package ui
+
+import (
+	"fmt"
+	"strings"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/container"
+	"fyne.io/fyne/v2/dialog"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+
+	"lazyrun/internal/icon"
+)
+
+// showIconSearch menampilkan pencarian ikon online (Iconify) dan mengirim hasil pilihan.
+func (ui *app) showIconSearch(query string, onPick func(icon.Result, []byte)) {
+	entry := widget.NewEntry()
+	entry.SetText(icon.QueryHint(query))
+	entry.SetPlaceHolder("whatsapp")
+
+	status := muted(T("search_hint"))
+	slots := make(chan struct{}, 4)
+	grid := container.NewGridWithColumns(6)
+	results := container.NewVScroll(container.NewPadded(grid))
+
+	var d *dialog.CustomDialog
+	search := func() {
+		if strings.TrimSpace(entry.Text) == "" {
+			status.SetText(T("search_hint"))
+			return
+		}
+		status.SetText(T("searching"))
+		grid.RemoveAll()
+		go func() {
+			list, err := icon.SearchBest(entry.Text, 24)
+			fyne.Do(func() {
+				if err != nil {
+					status.SetText(T("search_failed"))
+					return
+				}
+				status.SetText(fmt.Sprintf(T("search_found"), len(list)))
+				for _, result := range list {
+					grid.Add(ui.iconChoice(result, onPick, d, slots))
+				}
+			})
+		}()
+	}
+
+	entry.OnSubmitted = func(string) { search() }
+	content := container.NewBorder(
+		entry,
+		container.NewBorder(nil, nil, status,
+			container.NewHBox(
+				widget.NewButton(T("cancel"), func() { d.Hide() }),
+				widget.NewButtonWithIcon(T("search"), theme.SearchIcon(), search),
+			)),
+		nil, nil,
+		results,
+	)
+
+	d = dialog.NewCustom(T("icon_search_title"), "", content, ui.win)
+	d.Resize(fyne.NewSize(560, 460))
+	d.Show()
+	search()
+}
+
+// iconChoice adalah satu ikon hasil pencarian; gambarnya diunduh di latar belakang.
+func (ui *app) iconChoice(result icon.Result, onPick func(icon.Result, []byte), d *dialog.CustomDialog, slot chan struct{}) fyne.CanvasObject {
+	var data []byte
+
+	button := widget.NewButton("", func() {
+		onPick(result, data)
+		if d != nil {
+			d.Hide()
+		}
+	})
+	button.Importance = widget.LowImportance
+
+	go func() {
+		slot <- struct{}{} // batasi unduhan bersamaan supaya tidak kena rate limit
+		defer func() { <-slot }()
+
+		downloaded, _, err := icon.FromURL(result.URL)
+		if err != nil {
+			return
+		}
+		data = downloaded
+		fyne.Do(func() {
+			button.Icon = fyne.NewStaticResource(result.Name, downloaded)
+			button.Refresh()
+		})
+	}()
+
+	return container.NewGridWrap(fyne.NewSize(52, 52), button)
+}

internal/ui/dialog_webapp.go

@@ -12,6 +12,7 @@ import (
 	"fyne.io/fyne/v2/widget"
 
 	"lazyrun/internal/browser"
+	"lazyrun/internal/icon"
 	"lazyrun/internal/shortcut"
 	"lazyrun/internal/store"
 )
@@ -22,7 +23,8 @@ func (ui *app) showWebAppDialog() {
 		return
 	}
 
-	var iconPath string
+	var iconPath, iconURL string
+	var iconData []byte
 	var nameTouched, filling bool
 
 	urlEntry := widget.NewEntry()
@@ -55,10 +57,16 @@ func (ui *app) showWebAppDialog() {
 
 	browseIcon := widget.NewButtonWithIcon(T("browse"), theme.FolderOpenIcon(), func() {
 		pickFile(ui.win, imageFilter, func(path string) {
-			iconPath = path
+			iconPath, iconURL, iconData = path, "", nil
 			iconLabel.SetText(filepath.Base(path))
 		})
 	})
+	onlineIcon := widget.NewButtonWithIcon(T("online"), theme.SearchIcon(), func() {
+		ui.showIconSearch(nameEntry.Text, func(result icon.Result, data []byte) {
+			iconURL, iconPath, iconData = result.URL, "", data
+			iconLabel.SetText(result.Name)
+		})
+	})
 
 	var d *dialog.CustomDialog
 	install := widget.NewButtonWithIcon(T("install"), theme.DownloadIcon(), func() {
@@ -79,6 +87,8 @@ func (ui *app) showWebAppDialog() {
 			Name:     nameEntry.Text,
 			Browser:  shortcut.BrowserArg{Name: b.Name, Exec: b.Exec, Firefox: b.Kind == browser.Firefox},
 			IconPath: iconPath,
+			IconURL:  iconURL,
+			IconData: iconData,
 			Menu:     menu.Checked,
 			Desktop:  desktop.Checked,
 		}
@@ -93,7 +103,8 @@ func (ui *app) showWebAppDialog() {
 		widget.NewFormItem(T("field_url"), urlEntry),
 		widget.NewFormItem(T("field_name"), nameEntry),
 		widget.NewFormItem(T("field_browser"), picker),
-		widget.NewFormItem(T("field_icon"), container.NewBorder(nil, nil, nil, browseIcon, iconLabel)),
+		widget.NewFormItem(T("field_icon"), container.NewBorder(nil, nil, nil,
+			container.NewHBox(onlineIcon, browseIcon), iconLabel)),
 	)
 	content := container.NewVBox(
 		form,

internal/ui/main_window.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strconv"
+	"strings"
 	"time"
 
 	"fyne.io/fyne/v2"
@@ -138,6 +139,9 @@ func (ui *app) row(sc store.Shortcut) *hoverCard {
 
 	actions := container.NewHBox(chips...)
 	actions.Add(iconButton(theme.MediaPlayIcon(), func() { ui.launch(sc) }))
+	if syncable(sc) {
+		actions.Add(iconButton(theme.ViewRefreshIcon(), func() { ui.syncIcon(sc) }))
+	}
 	actions.Add(iconButton(theme.FolderOpenIcon(), func() {
 		if err := exec.Command("xdg-open", filepath.Dir(sc.DesktopPath)).Start(); err != nil {
 			dialog.ShowError(err, ui.win)
@@ -192,6 +196,40 @@ func (ui *app) flashCards() {
 	}
 }
 
+// syncable berarti ikon shortcut punya sumber online yang bisa diunduh ulang.
+func syncable(sc store.Shortcut) bool {
+	source := sc.IconSource
+	return strings.HasPrefix(source, "http") ||
+		strings.HasPrefix(source, "favicon:") ||
+		strings.HasPrefix(source, "search:")
+}
+
+// syncIcon mengunduh ulang ikon shortcut dari sumber online-nya.
+func (ui *app) syncIcon(sc store.Shortcut) {
+	progress := dialog.NewProgressInfinite(T("sync_icon"), T("working"), ui.win)
+	progress.Show()
+	go func() {
+		path, err := shortcut.RefreshIcon(sc)
+		fyne.Do(func() {
+			progress.Hide()
+			if err != nil {
+				dialog.ShowError(err, ui.win)
+				return
+			}
+			if i, ok := ui.store.Get(sc.Slug); ok {
+				ui.store.Items[i].IconPath = path
+				if err := ui.store.Save(); err != nil {
+					dialog.ShowError(err, ui.win)
+				}
+			}
+			ui.reload()
+			if card, ok := ui.cards[sc.Slug]; ok {
+				card.flash(0)
+			}
+		})
+	}()
+}
+
 func (ui *app) confirmDelete(sc store.Shortcut) {
 	content := container.NewVBox(widget.NewLabel(fmt.Sprintf(T("confirm_delete_msg"), sc.Name)))
 

internal/ui/strings.go

@@ -7,24 +7,32 @@ import (
 
 // tr menyimpan teks UI: index 0 = Inggris, 1 = Indonesia.
 var tr = map[string][2]string{
-	"app_title":      {"LazyRun — lazy shortcut build", "LazyRun — lazy shortcut build"},
-	"tagline":        {"lazy shortcut build", "lazy shortcut build"},
-	"btn_executable": {"Executable", "Executable"},
-	"btn_webapp":     {"Web App", "Aplikasi Web"},
-	"installed":      {"Installed shortcuts", "Shortcut terinstall"},
-	"empty_title":    {"Nothing here yet", "Belum ada apa-apa"},
-	"empty_hint":     {"Create your first shortcut with the buttons in the corner.", "Buat shortcut pertamamu lewat tombol di pojok kanan atas."},
-	"chip_menu":      {"Menu", "Menu"},
-	"chip_desktop":   {"Desktop", "Desktop"},
-	"chip_broken":    {"file missing", "file hilang"},
-	"none":           {"not selected", "belum dipilih"},
-	"icon_auto":      {"automatic", "otomatis"},
-	"browse":         {"Browse...", "Pilih..."},
-	"install":        {"Install", "Install"},
-	"cancel":         {"Cancel", "Batal"},
-	"delete":         {"Delete", "Hapus"},
-	"folder":         {"Folder", "Folder"},
-	"working":        {"Working...", "Sedang diproses..."},
+	"app_title":         {"LazyRun — lazy shortcut build", "LazyRun — lazy shortcut build"},
+	"tagline":           {"lazy shortcut build", "lazy shortcut build"},
+	"btn_executable":    {"Executable", "Executable"},
+	"btn_webapp":        {"Web App", "Aplikasi Web"},
+	"installed":         {"Installed shortcuts", "Shortcut terinstall"},
+	"empty_title":       {"Nothing here yet", "Belum ada apa-apa"},
+	"empty_hint":        {"Create your first shortcut with the buttons in the corner.", "Buat shortcut pertamamu lewat tombol di pojok kanan atas."},
+	"chip_menu":         {"Menu", "Menu"},
+	"chip_desktop":      {"Desktop", "Desktop"},
+	"chip_broken":       {"file missing", "file hilang"},
+	"none":              {"not selected", "belum dipilih"},
+	"icon_auto":         {"automatic", "otomatis"},
+	"online":            {"Online", "Online"},
+	"search":            {"Search", "Cari"},
+	"searching":         {"Searching...", "Mencari..."},
+	"search_failed":     {"Search failed. Check your connection.", "Pencarian gagal. Cek koneksi kamu."},
+	"search_found":      {"%d icons found - click one to use it.", "%d ikon ditemukan - klik satu untuk dipakai."},
+	"search_hint":       {"Type a name and press Search.", "Tulis nama lalu tekan Cari."},
+	"icon_search_title": {"Icon from the internet", "Ikon dari internet"},
+	"sync_icon":         {"Sync icon", "Sinkron ikon"},
+	"browse":            {"Browse...", "Pilih..."},
+	"install":           {"Install", "Install"},
+	"cancel":            {"Cancel", "Batal"},
+	"delete":            {"Delete", "Hapus"},
+	"folder":            {"Folder", "Folder"},
+	"working":           {"Working...", "Sedang diproses..."},
 
 	"new_exec_title": {"New Executable Shortcut", "Shortcut Executable Baru"},
 	"new_web_title":  {"New Web App Shortcut", "Shortcut Web App Baru"},
@@ -39,7 +47,7 @@ var tr = map[string][2]string{
 	"check_menu":       {"Application menu", "Menu aplikasi"},
 	"check_desktop":    {"Desktop", "Desktop"},
 	"exec_hint":        {"The binary is copied to ~/.local/bin and can be uninstalled from the list.", "Binary disalin ke ~/.local/bin dan bisa dihapus lagi dari daftar."},
-	"web_hint":         {"The icon is fetched from the site's favicon if you leave it empty.", "Ikon diambil otomatis dari favicon situs kalau dibiarkan kosong."},
+	"web_hint":         {"The icon comes from the site's favicon, or is looked up online if there is none.", "Ikon diambil dari favicon situs, atau dicari otomatis di internet kalau tidak ada."},
 
 	"confirm_delete_title": {"Uninstall shortcut", "Hapus shortcut"},
 	"confirm_delete_msg":   {"Remove %s?", "Hapus %s?"},