style(tui): run gofmt to fix formatting

- tui modal composer with reason select + free-form message
  (pkg/tui/refund.go)
- POST /api/v1/orders/{id}/refund-request posts to orders slack thread
- 15 min server side cooldown via Order.LastRefundRequestAt (429 +
  retry-after)
- shared refundrequestreasons + can requestrefund hoisted to pkg/models
- slack message includes customer name, email, order total, quoted body
- tests over invalid-state, missing-message, and cooldown paths

api/handlers/orders.go

@@ -2,9 +2,12 @@ package handlers
 
 import (
 	"encoding/json"
+	"fmt"
+	"log/slog"
 	"net/http"
 	"os"
 	"strconv"
+	"strings"
 	"time"
 
 	"terminalShop/pkg/bring"
@@ -31,6 +34,16 @@ type OrderHandler struct {
 	bringCustomerNumber string
 }
 
+type refundRequestPayload struct {
+	Reason  string `json:"reason"`
+	Message string `json:"message"`
+}
+
+// refundRequestCooldown is the minimum interval between customer-initiated
+// refund requests for the same order. Prevents accidental double-clicks and
+// repeated submissions from spamming the operator's Slack channel.
+const refundRequestCooldown = 15 * time.Minute
+
 func NewOrderHandler(stripeSecretKey, bringAPIUID, bringAPIKey, bringCustomerNumber string) *OrderHandler {
 	return &OrderHandler{
 		stripeKey:           stripeSecretKey,
@@ -40,6 +53,83 @@ func NewOrderHandler(stripeSecretKey, bringAPIUID, bringAPIKey, bringCustomerNum
 	}
 }
 
+// CreateRefundRequest posts a customer refund request into the order's Slack
+// thread. It does not issue a Stripe refund.
+func (h *OrderHandler) CreateRefundRequest(w http.ResponseWriter, r *http.Request) {
+	db := database.GetDB().WithContext(r.Context())
+	userID := middleware.UserIDFromContext(r.Context())
+
+	idStr := chi.URLParam(r, "id")
+	id, err := strconv.ParseUint(idStr, 10, 32)
+	if err != nil {
+		utils.RespondError(w, http.StatusBadRequest, "INVALID_ID", "invalid order id", nil)
+		return
+	}
+
+	var req refundRequestPayload
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		utils.RespondError(w, http.StatusBadRequest, "INVALID_JSON", "invalid request body", nil)
+		return
+	}
+
+	req.Reason = strings.TrimSpace(req.Reason)
+	req.Message = strings.TrimSpace(req.Message)
+
+	if !models.IsValidRefundReason(req.Reason) {
+		utils.RespondError(w, http.StatusBadRequest, "INVALID_REASON", "invalid refund reason", nil)
+		return
+	}
+	if req.Reason == models.RefundRequestReasonOther && req.Message == "" {
+		utils.RespondError(w, http.StatusBadRequest, "MESSAGE_REQUIRED", "message is required when reason is other", nil)
+		return
+	}
+
+	var order models.Order
+	if err := db.Preload("User").Where("id = ? AND user_id = ?", id, userID).First(&order).Error; err != nil {
+		utils.RespondError(w, http.StatusNotFound, "ORDER_NOT_FOUND", "order not found", nil)
+		return
+	}
+	if !order.CanRequestRefund() {
+		utils.RespondError(w, http.StatusBadRequest, "INVALID_STATE",
+			"only paid, shipped, or delivered orders can request refunds", nil)
+		return
+	}
+
+	if order.LastRefundRequestAt != nil {
+		elapsed := time.Since(*order.LastRefundRequestAt)
+		if elapsed < refundRequestCooldown {
+			retryAfter := int((refundRequestCooldown - elapsed).Seconds()) + 1
+			w.Header().Set("Retry-After", strconv.Itoa(retryAfter))
+			utils.RespondError(w, http.StatusTooManyRequests, "RATE_LIMITED",
+				fmt.Sprintf("another refund request was submitted recently; try again in %d min", retryAfter/60+1),
+				nil)
+			return
+		}
+	}
+
+	text := fmt.Sprintf(":money_with_wings: *Refund request* — %s\n*From:* %s <%s>\n*Total:* $%.2f",
+		req.Reason, order.User.Name, order.User.Email, order.TotalInDollars())
+	if req.Message != "" {
+		quoted := "> " + strings.ReplaceAll(req.Message, "\n", "\n> ")
+		text += "\n\n" + quoted
+	}
+
+	if err := notify.SlackPostToOrderThread(order.ID, text); err != nil {
+		utils.RespondError(w, http.StatusBadGateway, "SLACK_ERROR", "failed to send refund request", nil)
+		return
+	}
+
+	// Record the timestamp after a successful Slack post so a Slack outage
+	// doesn't consume the user's cooldown — they can retry immediately.
+	if err := db.Model(&order).Update("last_refund_request_at", time.Now()).Error; err != nil {
+		slog.Warn("refund request: failed to record timestamp", "order_id", order.ID, "error", err)
+	}
+
+	utils.RespondSuccess(w, http.StatusOK, map[string]any{
+		"status": "sent",
+	})
+}
+
 func (h *OrderHandler) GetOrders(w http.ResponseWriter, r *http.Request) {
 	db := database.GetDB().WithContext(r.Context())
 	userID := middleware.UserIDFromContext(r.Context())
@@ -50,7 +140,7 @@ func (h *OrderHandler) GetOrders(w http.ResponseWriter, r *http.Request) {
 		Preload("Events", func(tx *gorm.DB) *gorm.DB { return tx.Order("created_at ASC") }).
 		Order("created_at desc").Find(&orders)
 
-	utils.RespondSuccess(w, http.StatusOK, map[string]interface{}{
+	utils.RespondSuccess(w, http.StatusOK, map[string]any{
 		"orders": orders,
 	})
 }

api/handlers/orders_test.go

@@ -0,0 +1,170 @@
+package handlers
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+
+	"terminalShop/pkg/database"
+	"terminalShop/pkg/models"
+)
+
+func setupOrderTestDB(t *testing.T) models.User {
+	t.Helper()
+	testDB := filepath.Join(t.TempDir(), "orders.db")
+	database.ResetForTesting()
+	t.Cleanup(database.ResetForTesting)
+
+	db, err := database.Connect(testDB)
+	if err != nil {
+		t.Fatalf("failed to connect to test database: %v", err)
+	}
+	if err := database.Migrate(db); err != nil {
+		t.Fatalf("failed to migrate: %v", err)
+	}
+	if err := database.Seed(db); err != nil {
+		t.Fatalf("failed to seed: %v", err)
+	}
+
+	user := models.User{
+		SSHKeyFingerprint: "SHA256:ordertestfingerprint",
+		SSHPublicKey:      "ssh-ed25519 AAAA ordertestkey",
+		Name:              "Order Test User",
+		Email:             "orders@example.com",
+	}
+	if err := db.Create(&user).Error; err != nil {
+		t.Fatalf("failed to create test user: %v", err)
+	}
+
+	return user
+}
+
+func orderRequest(method, url string, body []byte, userID uint, orderID string) *http.Request {
+	req := authRequest(method, url, body, userID)
+	routeCtx := chi.NewRouteContext()
+	routeCtx.URLParams.Add("id", orderID)
+	return req.WithContext(contextWithRoute(req.Context(), routeCtx))
+}
+
+func contextWithRoute(ctx context.Context, routeCtx *chi.Context) context.Context {
+	return context.WithValue(ctx, chi.RouteCtxKey, routeCtx)
+}
+
+func TestCreateRefundRequestRequiresMessageForOther(t *testing.T) {
+	user := setupOrderTestDB(t)
+
+	handler := NewOrderHandler("", "", "", "")
+	body := []byte(`{"reason":"Other","message":"   "}`)
+	req := orderRequest("POST", "/api/v1/orders/1/refund-request", body, user.ID, "1")
+	w := httptest.NewRecorder()
+
+	handler.CreateRefundRequest(w, req)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected status 400, got %d", w.Code)
+	}
+
+	var resp struct {
+		Error struct {
+			Code string `json:"code"`
+		} `json:"error"`
+	}
+	if err := json.NewDecoder(w.Body).Decode(&resp); err != nil {
+		t.Fatalf("failed to decode response: %v", err)
+	}
+	if resp.Error.Code != "MESSAGE_REQUIRED" {
+		t.Errorf("expected MESSAGE_REQUIRED, got %q", resp.Error.Code)
+	}
+}
+
+func TestCreateRefundRequestRejectsInvalidOrderState(t *testing.T) {
+	user := setupOrderTestDB(t)
+
+	db := database.GetDB()
+	order := models.Order{
+		UserID:       user.ID,
+		CardID:       1,
+		Status:       models.OrderStatusFailed,
+		Subtotal:     100,
+		ShippingCost: 0,
+		Total:        100,
+	}
+	if err := db.Create(&order).Error; err != nil {
+		t.Fatalf("failed to create order: %v", err)
+	}
+
+	handler := NewOrderHandler("", "", "", "")
+	body := []byte(`{"reason":"Quality issue","message":""}`)
+	req := orderRequest("POST", "/api/v1/orders/1/refund-request", body, user.ID, fmt.Sprintf("%d", order.ID))
+	w := httptest.NewRecorder()
+
+	handler.CreateRefundRequest(w, req)
+
+	if w.Code != http.StatusBadRequest {
+		t.Fatalf("expected status 400, got %d", w.Code)
+	}
+
+	var resp struct {
+		Error struct {
+			Code string `json:"code"`
+		} `json:"error"`
+	}
+	if err := json.NewDecoder(w.Body).Decode(&resp); err != nil {
+		t.Fatalf("failed to decode response: %v", err)
+	}
+	if resp.Error.Code != "INVALID_STATE" {
+		t.Errorf("expected INVALID_STATE, got %q", resp.Error.Code)
+	}
+}
+
+func TestCreateRefundRequestEnforcesCooldown(t *testing.T) {
+	user := setupOrderTestDB(t)
+
+	db := database.GetDB()
+	recent := time.Now().Add(-1 * time.Minute)
+	order := models.Order{
+		UserID:              user.ID,
+		CardID:              1,
+		Status:              models.OrderStatusPaid,
+		Subtotal:            100,
+		ShippingCost:        0,
+		Total:               100,
+		LastRefundRequestAt: &recent,
+	}
+	if err := db.Create(&order).Error; err != nil {
+		t.Fatalf("failed to create order: %v", err)
+	}
+
+	handler := NewOrderHandler("", "", "", "")
+	body := []byte(`{"reason":"Quality issue","message":""}`)
+	req := orderRequest("POST", "/api/v1/orders/1/refund-request", body, user.ID, fmt.Sprintf("%d", order.ID))
+	w := httptest.NewRecorder()
+
+	handler.CreateRefundRequest(w, req)
+
+	if w.Code != http.StatusTooManyRequests {
+		t.Fatalf("expected status 429, got %d", w.Code)
+	}
+	if got := w.Header().Get("Retry-After"); got == "" {
+		t.Errorf("expected Retry-After header, got empty")
+	}
+
+	var resp struct {
+		Error struct {
+			Code string `json:"code"`
+		} `json:"error"`
+	}
+	if err := json.NewDecoder(w.Body).Decode(&resp); err != nil {
+		t.Fatalf("failed to decode response: %v", err)
+	}
+	if resp.Error.Code != "RATE_LIMITED" {
+		t.Errorf("expected RATE_LIMITED, got %q", resp.Error.Code)
+	}
+}

api/handlers/slack.go

@@ -130,7 +130,7 @@ func (h *SlackHandler) handleBuyLabel(orderIDStr string, p slackInteractivePaylo
 
 	resp, err := h.httpClient.Do(req)
 	if err != nil {
-		notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Label purchase failed: %v", err))
+		_ = notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Label purchase failed: %v", err))
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
@@ -151,7 +151,7 @@ func (h *SlackHandler) handleBuyLabel(orderIDStr string, p slackInteractivePaylo
 	_ = json.Unmarshal(bodyBytes, &result)
 
 	if resp.StatusCode >= 300 {
-		notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Label purchase failed: `%s` %s", result.Error.Code, result.Error.Message))
+		_ = notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Label purchase failed: `%s` %s", result.Error.Code, result.Error.Message))
 		return
 	}
 
@@ -173,7 +173,7 @@ func (h *SlackHandler) handleMarkStatus(orderIDStr string, p slackInteractivePay
 		return
 	}
 	if order.TrackingNumber == "" {
-		notify.SlackPostToOrderThread(orderID, ":x: Cannot mark status, the order has no tracking number yet.")
+		_ = notify.SlackPostToOrderThread(orderID, ":x: Cannot mark status, the order has no tracking number yet.")
 		return
 	}
 
@@ -198,12 +198,12 @@ func (h *SlackHandler) handleMarkStatus(orderIDStr string, p slackInteractivePay
 
 	resp, err := h.httpClient.Do(req)
 	if err != nil {
-		notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Mark %s failed: %v", status, err))
+		_ = notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Mark %s failed: %v", status, err))
 		return
 	}
 	defer func() { _ = resp.Body.Close() }()
 	if resp.StatusCode >= 300 {
-		notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Mark %s failed (HTTP %d)", status, resp.StatusCode))
+		_ = notify.SlackPostToOrderThread(orderID, fmt.Sprintf(":x: Mark %s failed (HTTP %d)", status, resp.StatusCode))
 		return
 	}
 

api/handlers/webhook.go

@@ -373,7 +373,9 @@ func (h *WebhookHandler) HandleShippo(w http.ResponseWriter, r *http.Request) {
 
 	if previousTrackingStatus != newStatus {
 		audit.TrackingUpdated(order.ID, order.Carrier, payload.Data.TrackingNumber, string(newStatus))
-		go notify.SlackPostToOrderThread(order.ID, formatTrackingUpdate(newStatus, payload.Data.TrackingStatus.StatusDetails))
+		go func() {
+			_ = notify.SlackPostToOrderThread(order.ID, formatTrackingUpdate(newStatus, payload.Data.TrackingStatus.StatusDetails))
+		}()
 	}
 	if deliveredTransition {
 		audit.OrderDelivered(order.ID, payload.Data.TrackingNumber)

api/routes/routes.go

@@ -126,6 +126,7 @@ func SetupRoutes(
 
 			// Orders
 			r.Get("/orders", orderHandler.GetOrders)
+			r.Post("/orders/{id}/refund-request", orderHandler.CreateRefundRequest)
 			r.Post("/orders/{id}/refund", orderHandler.RefundOrder)
 
 			// Addresses

pkg/api/client.go

@@ -636,6 +636,20 @@ type OrderResponse struct {
 	Error *APIError `json:"error,omitempty"`
 }
 
+// RefundRequest is the customer-facing refund request payload.
+type RefundRequest struct {
+	Reason  string `json:"reason"`
+	Message string `json:"message"`
+}
+
+type refundRequestResponse struct {
+	Success bool `json:"success"`
+	Data    struct {
+		Status string `json:"status"`
+	} `json:"data"`
+	Error *APIError `json:"error,omitempty"`
+}
+
 func (c *Client) GetOrders() ([]models.Order, error) {
 	url := fmt.Sprintf("%s/api/v1/orders", c.BaseURL)
 
@@ -664,6 +678,42 @@ func (c *Client) GetOrders() ([]models.Order, error) {
 	return ordersResp.Data.Orders, nil
 }
 
+// CreateRefundRequest posts a refund request for an order.
+func (c *Client) CreateRefundRequest(orderID uint, params RefundRequest) error {
+	url := fmt.Sprintf("%s/api/v1/orders/%d/refund-request", c.BaseURL, orderID)
+
+	jsonData, err := json.Marshal(params)
+	if err != nil {
+		return fmt.Errorf("failed to marshal refund request: %w", err)
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
+	if err != nil {
+		return fmt.Errorf("failed to create refund request: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.doRequest(req)
+	if err != nil {
+		return fmt.Errorf("failed to send refund request: %w", err)
+	}
+	defer func() { _ = resp.Body.Close() }()
+
+	var refundResp refundRequestResponse
+	if err := json.NewDecoder(resp.Body).Decode(&refundResp); err != nil {
+		return fmt.Errorf("failed to decode refund response: %w", err)
+	}
+
+	if !refundResp.Success {
+		if refundResp.Error != nil {
+			return fmt.Errorf("%s: %s", refundResp.Error.Code, refundResp.Error.Message)
+		}
+		return fmt.Errorf("failed to send refund request")
+	}
+
+	return nil
+}
+
 // The Addresses API response
 type AddressResponse struct {
 	Success bool `json:"success"`

pkg/models/order.go

@@ -66,6 +66,10 @@ type Order struct {
 	// Slack parent message ts for this order's thread (NULL if Slack notify disabled).
 	SlackThreadTS *string `gorm:"size:64" json:"-"`
 
+	// LastRefundRequestAt timestamps the most recent customer-initiated refund
+	// request for this order. Used to rate-limit repeat submissions.
+	LastRefundRequestAt *time.Time `json:"-"`
+
 	CreatedAt time.Time      `json:"created_at"`
 	UpdatedAt time.Time      `json:"updated_at"`
 	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"` // GORM soft-delete sentinel
@@ -113,3 +117,35 @@ func (o *Order) TotalInDollars() float64 {
 func (o *Order) IsActive() bool {
 	return o.Status == OrderStatusPaid || o.Status == OrderStatusShipped
 }
+
+// RefundRequestReasons is the canonical list of customer-facing refund reasons
+// accepted by both the API and the TUI.
+var RefundRequestReasons = []string{
+	"Wrong item received",
+	"Item damaged in transit",
+	"Item never arrived",
+	"Quality issue",
+	"Other",
+}
+
+// RefundRequestReasonOther is the sentinel reason that requires a free-form message.
+const RefundRequestReasonOther = "Other"
+
+// IsValidRefundReason reports whether r is one of the accepted refund reasons.
+func IsValidRefundReason(r string) bool {
+	for _, reason := range RefundRequestReasons {
+		if reason == r {
+			return true
+		}
+	}
+	return false
+}
+
+// CanRequestRefund reports whether a customer is allowed to request a refund
+// for this order. Paid, shipped, and delivered orders qualify; everything else
+// is either still unpaid or already in a terminal state.
+func (o *Order) CanRequestRefund() bool {
+	return o.Status == OrderStatusPaid ||
+		o.Status == OrderStatusShipped ||
+		o.Status == OrderStatusDelivered
+}

pkg/notify/slack.go

@@ -188,29 +188,33 @@ func SlackUnpinOrder(orderID uint) {
 }
 
 // SlackPostToOrderThread posts a plain-text reply inside the order's thread.
-// Looks up the thread ts from the database. Silent no-op if the order has no
-// saved thread (Slack was disabled when it was created, or post failed earlier).
-func SlackPostToOrderThread(orderID uint, text string) {
+// It looks up the thread ts from the database and returns an error when the
+// reply cannot be posted.
+func SlackPostToOrderThread(orderID uint, text string) error {
 	token := os.Getenv("SLACK_BOT_TOKEN")
 	channel := os.Getenv("SLACK_CHANNEL")
 	if token == "" || channel == "" {
-		return
+		return fmt.Errorf("slack is not configured")
 	}
 
 	var order models.Order
 	if err := database.GetDB().Select("id", "slack_thread_ts").Where("id = ?", orderID).First(&order).Error; err != nil {
 		slog.Warn("failed to look up order for thread post", "order_id", orderID, "error", err)
-		return
+		return fmt.Errorf("failed to look up order thread: %w", err)
 	}
 	if order.SlackThreadTS == nil || *order.SlackThreadTS == "" {
-		return
+		return fmt.Errorf("order has no slack thread")
 	}
 
-	_, _ = postSlackMessage(token, map[string]any{
+	if _, ok := postSlackMessage(token, map[string]any{
 		"channel":   channel,
 		"thread_ts": *order.SlackThreadTS,
 		"text":      text,
-	})
+	}); !ok {
+		slog.Warn("failed to post slack thread reply", "order_id", orderID)
+		return fmt.Errorf("failed to post slack thread reply")
+	}
+	return nil
 }
 
 func SlackPostLabelPurchased(orderID uint, labelURL string, costCents int) {

pkg/tui/account.go

@@ -288,6 +288,13 @@ func (m Model) AccountUpdate(msg tea.Msg) (Model, tea.Cmd) {
 		m.account.detailViewport, cmd = m.account.detailViewport.Update(msg)
 		return m, cmd
 
+	case "r":
+		if m.account.orderViewState == 2 {
+			if order, ok := m.selectedRefundableOrder(); ok {
+				return m.OpenRefundComposer(order.ID)
+			}
+		}
+
 	case "x", "d":
 		if m.account.addressListFocused && m.account.addressDeleting == nil && m.account.addressCursor < len(m.SavedAddresses) {
 			m.account.addressDeleting = &m.account.addressCursor
@@ -339,11 +346,15 @@ func (m Model) AccountUpdate(msg tea.Msg) (Model, tea.Cmd) {
 					m.account.orderYOffset = m.account.detailViewport.YOffset()
 					m.account.orderViewState = 2
 					m.account.detailViewport.GotoTop()
-					m.footer = []footerCommand{
+					footer := []footerCommand{
 						{key: "esc", value: "back"},
 						{key: "s", value: "shop"},
 						{key: "q", value: "quit"},
 					}
+					if _, ok := m.selectedRefundableOrder(); ok {
+						footer = append([]footerCommand{{key: "r", value: "refund"}}, footer...)
+					}
+					m.footer = footer
 				}
 			}
 		case "addresses":

pkg/tui/account_orders.go

@@ -37,6 +37,21 @@ func (m Model) HistoryOrders() []models.Order {
 	return out
 }
 
+// selectedRefundableOrder returns the order under the cursor in the active
+// order-detail view, paired with ok=true, when the user is allowed to file a
+// refund request for it. Returns (zero, false) otherwise.
+func (m Model) selectedRefundableOrder() (models.Order, bool) {
+	orders := m.currentOrderList()
+	if m.account.orderCursor < 0 || m.account.orderCursor >= len(orders) {
+		return models.Order{}, false
+	}
+	order := orders[m.account.orderCursor]
+	if !order.CanRequestRefund() {
+		return models.Order{}, false
+	}
+	return order, true
+}
+
 func (m Model) currentOrderList() []models.Order {
 	if m.account.cursor < 0 || m.account.cursor >= len(models.AccountMenuItems) {
 		return nil
@@ -241,7 +256,11 @@ func (m Model) buildOrderDetailView(order models.Order, _ int) string {
 	b.WriteString("\n\n")
 
 	// Footer hint
-	b.WriteString(dimStyle.Render("esc: back to orders"))
+	if order.CanRequestRefund() {
+		b.WriteString(dimStyle.Render("r: refund  esc: back to orders"))
+	} else {
+		b.WriteString(dimStyle.Render("esc: back to orders"))
+	}
 
 	return b.String()
 }

pkg/tui/model.go

@@ -64,6 +64,11 @@ type VisibleError struct {
 	message string
 }
 
+// VisibleNotice is a typed success message displayed to the user as a banner.
+type VisibleNotice struct {
+	message string
+}
+
 type Model struct {
 	// User authentication
 	User               *models.User
@@ -110,6 +115,7 @@ type Model struct {
 
 	Loading   bool // true when fetching data from API
 	error     *VisibleError
+	notice    *VisibleNotice
 	APIClient *api.Client
 
 	// Rendering
@@ -128,6 +134,7 @@ type Model struct {
 	shipping shippingState
 	payment  paymentState
 	account  accountState
+	refund   refundState
 	review   reviewState
 	confirm  confirmState
 
@@ -217,6 +224,7 @@ func (m Model) SwitchPage(p page) Model {
 	m.currentPage = p
 	m.switched = true
 	m.error = nil
+	m.notice = nil
 	return m
 }
 

pkg/tui/refund.go

@@ -0,0 +1,369 @@
+package tui
+
+import (
+	"fmt"
+	"strings"
+
+	"charm.land/bubbles/v2/textarea"
+	tea "charm.land/bubbletea/v2"
+	"charm.land/huh/v2"
+	"charm.land/lipgloss/v2"
+
+	"terminalShop/pkg/api"
+	"terminalShop/pkg/models"
+)
+
+// Refund composer layout constants.
+const (
+	refundMinTextareaRows = 5
+	refundMaxTextareaRows = 10
+	// chrome above the textarea inside the modal (title, label, padding, footer).
+	refundModalChrome   = 12
+	refundModalMaxWidth = 58
+	refundModalMinWidth = 24
+	// horizontal chrome the modal subtracts from m.widthContent.
+	refundModalHGutter = 6
+	// inner padding around the textarea inside the modal body.
+	refundTextareaHPad = 4
+)
+
+// refundFocus identifies which field in the refund composer has keyboard focus.
+type refundFocus int
+
+const (
+	refundFocusReason refundFocus = iota
+	refundFocusMessage
+	refundFocusCount
+)
+
+type refundState struct {
+	open       bool
+	orderID    uint
+	gen        uint64 // bumped each open so late async results from a prior session are ignored
+	reason     string
+	form       *huh.Form
+	textarea   textarea.Model
+	focusIdx   refundFocus
+	submitting bool
+	err        string
+	reasonErr  string
+	messageErr string
+}
+
+type refundRequestMsg struct {
+	OrderID uint
+	Gen     uint64
+	Err     error
+}
+
+// OpenRefundComposer opens the refund request composer for an order.
+func (m Model) OpenRefundComposer(orderID uint) (Model, tea.Cmd) {
+	state := refundState{
+		open:    true,
+		orderID: orderID,
+		gen:     m.refund.gen + 1,
+	}
+	state.textarea = m.newRefundTextarea()
+	state.form = m.buildRefundForm(&state)
+	m.refund = state
+	return m, m.refund.form.Init()
+}
+
+// RefundUpdate handles all input and async results while the refund composer is open.
+func (m Model) RefundUpdate(msg tea.Msg) (Model, tea.Cmd) {
+	state := &m.refund
+	if !state.open {
+		return m, nil
+	}
+
+	switch msg := msg.(type) {
+	case refundRequestMsg:
+		if msg.Gen != state.gen || msg.OrderID != state.orderID {
+			return m, nil
+		}
+		state.submitting = false
+		if msg.Err != nil {
+			state.err = fmt.Sprintf("failed to send refund request: %v", msg.Err)
+			return m, nil
+		}
+		gen := state.gen
+		m.refund = refundState{gen: gen}
+		m.notice = &VisibleNotice{message: "Refund request sent"}
+		return m, nil
+
+	case tea.WindowSizeMsg:
+		state.form = m.buildRefundForm(state)
+		m.resizeRefundTextarea(state)
+		return m, nil
+
+	case tea.KeyMsg:
+		if state.submitting {
+			return m, nil
+		}
+		switch msg.String() {
+		case "esc":
+			gen := state.gen
+			m.refund = refundState{gen: gen}
+			return m, nil
+		case "ctrl+s":
+			return m, m.submitRefundRequest(state)
+		case "tab", "shift+tab":
+			return m, m.setRefundFocus(state, (state.focusIdx+1)%refundFocusCount)
+		}
+	}
+
+	if state.focusIdx == refundFocusReason {
+		state.err = ""
+		state.reasonErr = ""
+		form, cmd := state.form.Update(msg)
+		if f, ok := form.(*huh.Form); ok {
+			state.form = f
+		}
+		if state.form.State == huh.StateCompleted {
+			state.form = m.buildRefundForm(state)
+			return m, m.setRefundFocus(state, refundFocusMessage)
+		}
+		return m, cmd
+	}
+
+	if _, ok := msg.(tea.KeyMsg); ok {
+		state.err = ""
+		state.messageErr = ""
+	}
+	ta, cmd := state.textarea.Update(msg)
+	state.textarea = ta
+	return m, cmd
+}
+
+func (m Model) buildRefundForm(state *refundState) *huh.Form {
+	options := make([]huh.Option[string], 0, len(models.RefundRequestReasons))
+	for _, reason := range models.RefundRequestReasons {
+		options = append(options, huh.NewOption(reason, reason))
+	}
+
+	return huh.NewForm(
+		huh.NewGroup(
+			huh.NewSelect[string]().
+				Title("Reason").
+				Key("reason").
+				Options(options...).
+				Value(&state.reason).
+				Height(len(models.RefundRequestReasons) + 1),
+		),
+	).
+		WithShowErrors(false).
+		WithShowHelp(false).
+		WithTheme(m.theme.Form()).
+		WithLayout(huh.LayoutStack).
+		WithWidth(m.refundContentWidth())
+}
+
+func (m Model) newRefundTextarea() textarea.Model {
+	ta := textarea.New()
+	ta.Prompt = ""
+	ta.Placeholder = "Describe the issue (optional)..."
+	ta.ShowLineNumbers = true
+	ta.CharLimit = 65536
+	ta.DynamicHeight = true
+	ta.MinHeight = refundMinTextareaRows
+	ta.MaxHeight = max(refundMinTextareaRows, min(refundMaxTextareaRows, m.heightContainer-refundModalChrome))
+	ta.SetHeight(refundMinTextareaRows)
+	ta.SetWidth(m.refundTextareaWidth())
+
+	base := lipgloss.NewStyle()
+	ta.SetStyles(textarea.Styles{
+		Focused: textarea.StyleState{
+			Base:             base,
+			Text:             base.Foreground(m.theme.Accent()),
+			LineNumber:       base.Foreground(m.theme.Dim()),
+			CursorLine:       base.Background(m.theme.Border()).Foreground(m.theme.Accent()),
+			CursorLineNumber: base.Foreground(m.theme.Body()),
+			Placeholder:      base.Foreground(m.theme.Dim()),
+			EndOfBuffer:      base.Foreground(m.theme.Dim()),
+		},
+		Blurred: textarea.StyleState{
+			Base:             base,
+			Text:             base.Foreground(m.theme.Body()),
+			LineNumber:       base.Foreground(m.theme.Dim()),
+			CursorLine:       base.Foreground(m.theme.Background()),
+			CursorLineNumber: base.Foreground(m.theme.Dim()),
+			Placeholder:      base.Foreground(m.theme.Dim()),
+			EndOfBuffer:      base.Foreground(m.theme.Dim()),
+		},
+		Cursor: textarea.CursorStyle{
+			Color: m.theme.Highlight(),
+			Shape: tea.CursorBlock,
+			Blink: true,
+		},
+	})
+	return ta
+}
+
+func (m Model) resizeRefundTextarea(state *refundState) {
+	state.textarea.MinHeight = refundMinTextareaRows
+	state.textarea.MaxHeight = max(refundMinTextareaRows, min(refundMaxTextareaRows, m.heightContainer-refundModalChrome))
+	state.textarea.SetWidth(m.refundTextareaWidth())
+}
+
+func (m Model) setRefundFocus(state *refundState, focusIdx refundFocus) tea.Cmd {
+	state.focusIdx = focusIdx
+	if focusIdx == refundFocusReason {
+		state.textarea.Blur()
+		state.form = m.buildRefundForm(state)
+		return state.form.Init()
+	}
+	return state.textarea.Focus()
+}
+
+func (m Model) submitRefundRequest(state *refundState) tea.Cmd {
+	state.err = ""
+	state.reasonErr = ""
+	state.messageErr = ""
+
+	reason := strings.TrimSpace(state.reason)
+	message := strings.TrimSpace(state.textarea.Value())
+
+	if reason == "" {
+		state.reasonErr = "select a refund reason"
+		return nil
+	}
+
+	if reason == models.RefundRequestReasonOther && message == "" {
+		state.messageErr = "message is required when reason is other"
+		return nil
+	}
+
+	state.submitting = true
+	return m.createRefundRequestCmd(state.orderID, state.gen, reason, message)
+}
+
+func (m Model) createRefundRequestCmd(orderID uint, gen uint64, reason string, message string) tea.Cmd {
+	return func() tea.Msg {
+		if m.APIClient == nil || m.User == nil {
+			return refundRequestMsg{OrderID: orderID, Gen: gen, Err: fmt.Errorf("not authenticated")}
+		}
+		err := m.APIClient.CreateRefundRequest(orderID, api.RefundRequest{
+			Reason:  reason,
+			Message: message,
+		})
+		return refundRequestMsg{OrderID: orderID, Gen: gen, Err: err}
+	}
+}
+
+// RenderRefundOverlay renders the refund composer as a centered modal.
+func (m Model) RenderRefundOverlay() string {
+	state := &m.refund
+	contentWidth := m.refundContentWidth()
+
+	title := m.theme.TextAccent().
+		Bold(true).
+		Width(contentWidth).
+		Render(fmt.Sprintf("Refund request - Order #%d", state.orderID))
+
+	body := lipgloss.JoinVertical(
+		lipgloss.Left,
+		title,
+		"",
+		m.renderRefundReason(state),
+		"",
+		m.renderRefundTextarea(state),
+		"",
+		m.renderRefundFooter(state),
+	)
+
+	modal := lipgloss.NewStyle().
+		Width(contentWidth).
+		Border(lipgloss.NormalBorder()).
+		BorderForeground(m.theme.Border()).
+		Padding(1, 2).
+		Render(body)
+
+	return lipgloss.Place(m.widthContainer, m.heightContainer, lipgloss.Center, lipgloss.Center, modal)
+}
+
+func (m Model) renderRefundReason(state *refundState) string {
+	if state.focusIdx == 0 && state.form != nil {
+		out := state.form.View()
+		if state.reasonErr != "" {
+			out += "\n" + m.theme.TextError().Render(state.reasonErr)
+		}
+		return out
+	}
+
+	value := state.reason
+	if value == "" {
+		value = "Select a reason"
+	}
+
+	label := m.theme.TextLabel().Render("Reason")
+	selected := m.theme.TextAccent().
+		Border(lipgloss.HiddenBorder()).
+		PaddingLeft(1).
+		Width(m.refundContentWidth()).
+		Render(value)
+
+	out := lipgloss.JoinVertical(lipgloss.Left, label, selected)
+	if state.reasonErr != "" {
+		out += "\n" + m.theme.TextError().Render(state.reasonErr)
+	}
+	return out
+}
+
+func (m Model) renderRefundTextarea(state *refundState) string {
+	label := "Message (optional)"
+	placeholder := "Describe the issue (optional)..."
+	if state.reason == models.RefundRequestReasonOther {
+		label = "Message (required)"
+		placeholder = "Describe the issue..."
+	}
+	state.textarea.Placeholder = placeholder
+
+	border := m.theme.Border()
+	if state.focusIdx == refundFocusMessage {
+		border = m.theme.Highlight()
+	}
+
+	counter := m.theme.TextDim().
+		Width(m.refundTextareaWidth()).
+		Align(lipgloss.Right).
+		Render(fmt.Sprintf("%d chars", state.textarea.Length()))
+
+	box := lipgloss.NewStyle().
+		Border(lipgloss.NormalBorder()).
+		BorderForeground(border).
+		Padding(0, 1).
+		Width(m.refundContentWidth()).
+		Render(state.textarea.View() + "\n" + counter)
+
+	out := lipgloss.JoinVertical(
+		lipgloss.Left,
+		m.theme.TextLabel().Render(label),
+		box,
+	)
+	if state.messageErr != "" {
+		out += "\n" + m.theme.TextError().Render(state.messageErr)
+	}
+	return out
+}
+
+func (m Model) renderRefundFooter(state *refundState) string {
+	if state.submitting {
+		return m.theme.TextAccent().Render("sending refund request...")
+	}
+	if state.err != "" {
+		return m.theme.TextError().Render(state.err)
+	}
+	return m.theme.TextDim().Render("tab next field | shift+tab prev | ctrl+s submit | esc cancel")
+}
+
+func (m Model) refundContentWidth() int {
+	width := min(m.widthContent-refundModalHGutter, refundModalMaxWidth)
+	if width < refundModalMinWidth {
+		width = max(1, m.widthContent-refundTextareaHPad)
+	}
+	return width
+}
+
+func (m Model) refundTextareaWidth() int {
+	return max(1, m.refundContentWidth()-refundTextareaHPad)
+}

pkg/tui/update.go

@@ -2,11 +2,12 @@ package tui
 
 import (
 	"fmt"
-	"terminalShop/pkg/api"
-	"terminalShop/pkg/models"
 	"time"
 
 	tea "charm.land/bubbletea/v2"
+
+	"terminalShop/pkg/api"
+	"terminalShop/pkg/models"
 )
 
 func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
@@ -36,6 +37,10 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 			if m.payment.form != nil {
 				m.payment.form.form = m.buildPaymentForm(m.payment.form)
 			}
+			if m.refund.open {
+				m.refund.form = m.buildRefundForm(&m.refund)
+				m.resizeRefundTextarea(&m.refund)
+			}
 		}
 		return m, nil
 	}
@@ -51,9 +56,15 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	switch msg := msg.(type) {
 	case VisibleError:
 		m.error = &msg
+		m.notice = nil
+		return m, nil
+	case VisibleNotice:
+		m.notice = &msg
+		m.error = nil
 		return m, nil
 	case error:
 		m.error = &VisibleError{message: msg.Error()}
+		m.notice = nil
 		if m.currentPage == shopPage || m.currentPage == cartPage {
 			return m, m.fetchCartCmd
 		}
@@ -167,9 +178,14 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		if m.shipping.form != nil || m.payment.form != nil {
 			break
 		}
-		// Dismiss error banner with ESC
-		if msg.String() == "esc" && m.error != nil {
+		// Refund overlay owns input when open; dispatched below before page handlers.
+		if m.refund.open {
+			break
+		}
+		// Dismiss banners with ESC.
+		if msg.String() == "esc" && (m.error != nil || m.notice != nil) {
 			m.error = nil
+			m.notice = nil
 			return m, nil
 		}
 		// Global navigation
@@ -192,6 +208,12 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		}
 		// non-globals. fall through to page dispatch below
 	}
+
+	// Refund overlay intercepts all input after global handling.
+	if m.refund.open {
+		return m.RefundUpdate(msg)
+	}
+
 	// Page-specifics
 	switch m.currentPage {
 	case shopPage:

pkg/tui/views.go

@@ -84,6 +84,10 @@ func (m Model) renderString() string {
 		errorStyle := m.theme.PanelError().Padding(0, 1).MarginBottom(1)
 		errorBanner := errorStyle.Render(m.error.message)
 		content = errorBanner + "\n" + m.buildPageContent(availableContentHeight)
+	} else if m.notice != nil {
+		noticeStyle := m.theme.TextSuccess().Border(lipgloss.NormalBorder()).BorderForeground(m.theme.Success()).Padding(0, 1).MarginBottom(1)
+		noticeBanner := noticeStyle.Render(m.notice.message)
+		content = noticeBanner + "\n" + m.buildPageContent(availableContentHeight)
 	} else {
 		content = m.buildPageContent(availableContentHeight)
 	}
@@ -115,6 +119,10 @@ func (m Model) renderString() string {
 		MaxHeight(m.heightContainer).
 		Render(child)
 
+	if m.refund.open {
+		constrained = m.RenderRefundOverlay()
+	}
+
 	// Center the entire container in the terminal viewport
 	return lipgloss.Place(
 		m.viewportWidth,