feat(handlers): add register routes and handlers for user registration process

handlers/routes.go

@@ -11,6 +11,11 @@ func RegisterRoutes(mux *http.ServeMux) {
 	mux.HandleFunc("GET /", handleWelcome)
 	mux.HandleFunc("GET /welcome", handleWelcome)
 	mux.HandleFunc("GET /welcome/step/{step}", handleWelcomeStep)
+
+	mux.HandleFunc("GET /register", handleRegister)
+	mux.HandleFunc("GET /register/step/{step}", handleRegisterStep)
+	mux.HandleFunc("GET /register/capabilities", handleRegisterCapabilities)
+	mux.HandleFunc("POST /register/verify-code", handleRegisterVerifyCode)
 }
 
 // handleWelcome renders the full welcome page at step 1
@@ -33,6 +38,50 @@ func handleWelcomeStep(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// Full page render for non-HTMX requests
 	views.WelcomePage(step).Render(r.Context(), w)
 }
+
+func handleRegister(w http.ResponseWriter, r *http.Request) {
+	state := views.RegisterState{Step: 1}
+	views.RegisterPage(state).Render(r.Context(), w)
+}
+
+func handleRegisterStep(w http.ResponseWriter, r *http.Request) {
+	stepStr := r.PathValue("step")
+	step, err := strconv.Atoi(stepStr)
+	if err != nil || step < 1 || step > 3 {
+		step = 1
+	}
+
+	method := r.URL.Query().Get("method")
+	if method == "" {
+		method = "passkey"
+	}
+
+	state := views.RegisterState{Step: step, Method: method}
+
+	if r.Header.Get("HX-Request") == "true" {
+		views.RegisterStepWithStepper(state).Render(r.Context(), w)
+		return
+	}
+
+	views.RegisterPage(state).Render(r.Context(), w)
+}
+
+func handleRegisterCapabilities(w http.ResponseWriter, r *http.Request) {
+	caps := views.DeviceCapabilities{
+		Platform:      true,
+		CrossPlatform: true,
+		Conditional:   true,
+	}
+	views.CapabilitiesResult(caps).Render(r.Context(), w)
+}
+
+func handleRegisterVerifyCode(w http.ResponseWriter, r *http.Request) {
+	state := views.RegisterState{Step: 3}
+	if r.Header.Get("HX-Request") == "true" {
+		views.RegisterStepWithStepper(state).Render(r.Context(), w)
+		return
+	}
+	views.RegisterPage(state).Render(r.Context(), w)
+}