feat: add protected public web lyrics workflow

server.go

@@ -44,6 +44,9 @@ func (a *localApp) routes() http.Handler {
 	mux.HandleFunc("GET /app", a.withSession(a.appPage))
 	mux.HandleFunc("GET /app.js", a.withSession(a.asset("app.js", "text/javascript; charset=utf-8")))
 	mux.HandleFunc("GET /styles.css", a.withSession(a.asset("styles.css", "text/css; charset=utf-8")))
+	mux.HandleFunc("GET /api/info", a.withSession(func(w http.ResponseWriter, _ *http.Request) {
+		writeJSON(w, http.StatusOK, map[string]any{"mode": "local", "version": version})
+	}))
 	mux.HandleFunc("POST /api/search", a.withSession(a.withAPI(a.search)))
 	mux.HandleFunc("POST /api/lyrics", a.withSession(a.withAPI(a.lyrics)))
 	mux.HandleFunc("GET /health", func(w http.ResponseWriter, _ *http.Request) {