Add standalone Go build alongside VSCode extension

Ports all five tools to a single 7.5 MB Windows exe with an embedded
WebView2 window, file-based config, single-instance focus, and clean
shutdown. Adds build.ps1 to build both targets from one command.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

standalone/platform.go

@@ -0,0 +1,177 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"sync"
+)
+
+type PlecConfig struct {
+	UploadUrl       string `json:"uploadUrl"`
+	OriginUrl       string `json:"originUrl"`
+	PreviewBase     string `json:"previewBase"`
+	SkipExistsCheck bool   `json:"skipExistsCheck"`
+}
+
+type ApplovinConfig struct {
+	Cookie string `json:"cookie"`
+}
+
+type SendToMobileConfig struct {
+	Port int `json:"port"`
+}
+
+type DailyUpdateConfig struct {
+	LastProject string `json:"lastProject"`
+}
+
+type AppConfig struct {
+	Plec         PlecConfig         `json:"plec"`
+	Applovin     ApplovinConfig     `json:"applovin"`
+	SendToMobile SendToMobileConfig `json:"sendToMobile"`
+	DailyUpdate  DailyUpdateConfig  `json:"dailyUpdate"`
+}
+
+var configMu sync.Mutex
+
+func defaultConfig() AppConfig {
+	return AppConfig{
+		Plec: PlecConfig{
+			UploadUrl:       "http://167.99.227.249/src/upload_HTML_Experimental.php",
+			OriginUrl:       "http://167.99.227.249",
+			PreviewBase:     "https://playable.applovindemo.com/phaser/",
+			SkipExistsCheck: false,
+		},
+		Applovin:     ApplovinConfig{Cookie: ""},
+		SendToMobile: SendToMobileConfig{Port: 0},
+		DailyUpdate:  DailyUpdateConfig{LastProject: ""},
+	}
+}
+
+func appDir() string {
+	exe, err := os.Executable()
+	if err != nil {
+		wd, _ := os.Getwd()
+		return wd
+	}
+	// `go run` puts the exe in a temp dir; fall back to cwd in that case.
+	resolved, err := filepath.EvalSymlinks(exe)
+	if err == nil {
+		exe = resolved
+	}
+	dir := filepath.Dir(exe)
+	if strings.Contains(strings.ToLower(dir), "go-build") {
+		wd, _ := os.Getwd()
+		return wd
+	}
+	return dir
+}
+
+func configPath() string {
+	return filepath.Join(appDir(), "config.json")
+}
+
+func LoadConfig() AppConfig {
+	configMu.Lock()
+	defer configMu.Unlock()
+	cfg := defaultConfig()
+	data, err := os.ReadFile(configPath())
+	if err != nil {
+		return cfg
+	}
+	_ = json.Unmarshal(data, &cfg)
+	return cfg
+}
+
+func SaveConfig(cfg AppConfig) error {
+	configMu.Lock()
+	defer configMu.Unlock()
+	data, err := json.MarshalIndent(cfg, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(configPath(), data, 0644)
+}
+
+func OpenInBrowser(url string) {
+	// `start` is a cmd builtin. Quoted empty arg is the window title.
+	cmd := exec.Command("cmd", "/c", "start", "", url)
+	_ = cmd.Start()
+}
+
+func CopyToClipboard(text string) error {
+	cmd := exec.Command("clip")
+	cmd.Stdin = strings.NewReader(text)
+	return cmd.Run()
+}
+
+type FileFilter struct {
+	Name       string
+	Extensions []string
+}
+
+func psEscape(s string) string { return strings.ReplaceAll(s, "'", "''") }
+
+func PickFiles(title string, filters []FileFilter, multi bool, initialDir string) []string {
+	filterStr := "All files|*.*"
+	if len(filters) > 0 {
+		parts := make([]string, 0, len(filters))
+		for _, f := range filters {
+			exts := make([]string, 0, len(f.Extensions))
+			for _, e := range f.Extensions {
+				exts = append(exts, "*."+e)
+			}
+			parts = append(parts, fmt.Sprintf("%s|%s", f.Name, strings.Join(exts, ";")))
+		}
+		filterStr = strings.Join(parts, "|")
+	}
+	multiStr := "false"
+	if multi {
+		multiStr = "true"
+	}
+	script := fmt.Sprintf(`
+Add-Type -AssemblyName System.Windows.Forms
+$dlg = New-Object System.Windows.Forms.OpenFileDialog
+$dlg.Title = '%s'
+$dlg.Filter = '%s'
+$dlg.Multiselect = $%s
+if ('%s'.Length -gt 0) { $dlg.InitialDirectory = '%s' }
+if ($dlg.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
+  $dlg.FileNames | ForEach-Object { Write-Output $_ }
+}
+`, psEscape(title), psEscape(filterStr), multiStr, psEscape(initialDir), psEscape(initialDir))
+	out, err := exec.Command("powershell", "-NoProfile", "-NonInteractive", "-STA", "-Command", script).Output()
+	if err != nil {
+		return nil
+	}
+	lines := strings.Split(string(out), "\n")
+	result := make([]string, 0, len(lines))
+	for _, l := range lines {
+		t := strings.TrimSpace(l)
+		if t != "" {
+			result = append(result, t)
+		}
+	}
+	return result
+}
+
+func PickFolder(title, initialDir string) string {
+	script := fmt.Sprintf(`
+Add-Type -AssemblyName System.Windows.Forms
+$dlg = New-Object System.Windows.Forms.FolderBrowserDialog
+$dlg.Description = '%s'
+if ('%s'.Length -gt 0) { $dlg.SelectedPath = '%s' }
+if ($dlg.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {
+  Write-Output $dlg.SelectedPath
+}
+`, psEscape(title), psEscape(initialDir), psEscape(initialDir))
+	out, err := exec.Command("powershell", "-NoProfile", "-NonInteractive", "-STA", "-Command", script).Output()
+	if err != nil {
+		return ""
+	}
+	return strings.TrimSpace(string(out))
+}