add installer alpha version

internal/httpapp/app.go

@@ -55,11 +55,40 @@ type App struct {
 }
 
 func New(cfg Config) (*App, error) {
+	// Resolve paths relative to executable or current working directory
 	if cfg.TemplatesDir == "" {
-		cfg.TemplatesDir = "web/templates"
+		// Try multiple locations for templates
+		possiblePaths := []string{
+			"web/templates",
+			"./web/templates",
+			"/opt/atlas/web/templates",
+		}
+		for _, path := range possiblePaths {
+			if _, err := os.Stat(path); err == nil {
+				cfg.TemplatesDir = path
+				break
+			}
+		}
+		if cfg.TemplatesDir == "" {
+			cfg.TemplatesDir = "web/templates" // Default fallback
+		}
 	}
 	if cfg.StaticDir == "" {
-		cfg.StaticDir = "web/static"
+		// Try multiple locations for static files
+		possiblePaths := []string{
+			"web/static",
+			"./web/static",
+			"/opt/atlas/web/static",
+		}
+		for _, path := range possiblePaths {
+			if _, err := os.Stat(path); err == nil {
+				cfg.StaticDir = path
+				break
+			}
+		}
+		if cfg.StaticDir == "" {
+			cfg.StaticDir = "web/static" // Default fallback
+		}
 	}
 
 	tmpl, err := parseTemplates(cfg.TemplatesDir)
@@ -228,6 +257,12 @@ func parseTemplates(dir string) (*template.Template, error) {
 
 	funcs := template.FuncMap{
 		"nowRFC3339": func() string { return time.Now().Format(time.RFC3339) },
+		"getContentTemplate": func(data map[string]any) string {
+			if ct, ok := data["ContentTemplate"].(string); ok && ct != "" {
+				return ct
+			}
+			return "content"
+		},
 	}
 
 	t := template.New("root").Funcs(funcs)