feat(tuie): drive roast meter from product roast_level field

pkg/database/seed.go

@@ -26,6 +26,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Espresso",
 			RoastType:   "Dark Roast",
+			RoastLevel:  5,
 			Ounces:      2,
 			BeanType:    "Arabica",
 			Price:       1800, // $18.00
@@ -35,6 +36,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Americano",
 			RoastType:   "Medium Roast",
+			RoastLevel:  3,
 			Ounces:      8,
 			BeanType:    "Arabica",
 			Price:       2200, // $22.00
@@ -44,6 +46,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Cappuccino",
 			RoastType:   "Medium Roast",
+			RoastLevel:  3,
 			Ounces:      6,
 			BeanType:    "Arabica",
 			Price:       2200, // $22.00
@@ -53,6 +56,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Latte",
 			RoastType:   "Medium Roast",
+			RoastLevel:  2,
 			Ounces:      12,
 			BeanType:    "Arabica",
 			Price:       2500, // $25.00
@@ -62,6 +66,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Mocha",
 			RoastType:   "Dark Roast",
+			RoastLevel:  4,
 			Ounces:      12,
 			BeanType:    "Arabica",
 			Price:       3000, // $30.00
@@ -71,6 +76,7 @@ func Seed(db *gorm.DB) error {
 		{
 			Name:        "Macchiato",
 			RoastType:   "Dark Roast",
+			RoastLevel:  4,
 			Ounces:      3,
 			BeanType:    "Robusta Blend",
 			Price:       1800, // $18.00

pkg/models/coffee.go

@@ -11,6 +11,7 @@ type Coffee struct {
 	ID          uint           `gorm:"primaryKey" json:"id"`
 	Name        string         `gorm:"size:255;not null" json:"name"`
 	RoastType   string         `gorm:"size:100" json:"roast_type"`
+	RoastLevel  int            `json:"roast_level"` // 1-5 roast-intensity
 	Ounces      int            `json:"ounces"`
 	BeanType    string         `gorm:"size:100" json:"bean_type"`
 	Price       int            `gorm:"not null" json:"price"`

pkg/tui/model.go

@@ -837,6 +837,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Espresso",
 				RoastType:   "Dark Roast",
+				RoastLevel:  5,
 				Ounces:      2,
 				BeanType:    "Arabica",
 				Price:       350, // $3.50
@@ -846,6 +847,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Latte",
 				RoastType:   "Medium Roast",
+				RoastLevel:  2,
 				Ounces:      12,
 				BeanType:    "Arabica Blend",
 				Price:       500, // $5.00
@@ -855,6 +857,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Cappuccino",
 				RoastType:   "Medium Roast",
+				RoastLevel:  3,
 				Ounces:      8,
 				BeanType:    "Italian Blend",
 				Price:       450, // $4.50
@@ -864,6 +867,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Americano",
 				RoastType:   "Dark Roast",
+				RoastLevel:  4,
 				Ounces:      16,
 				BeanType:    "Arabica",
 				Price:       400, // $4.00
@@ -873,6 +877,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Mocha",
 				RoastType:   "Medium Roast",
+				RoastLevel:  3,
 				Ounces:      16,
 				BeanType:    "Colombian",
 				Price:       550, // $5.50
@@ -882,6 +887,7 @@ func NewModel(username string) Model {
 			{
 				Name:        "Macchiato",
 				RoastType:   "Dark Roast",
+				RoastLevel:  4,
 				Ounces:      3,
 				BeanType:    "Robusta Blend",
 				Price:       425, // $4.25

pkg/tui/shop.go

@@ -38,6 +38,7 @@ func (m Model) shopLayout() (contentW, menuW, detailW, wideW int) {
 }
 
 // roastLevel maps a roast type to a 1-5 intensity for the roast meter.
+// It is the fallback for products stored before the roast_level column existed.
 func roastLevel(roastType string) int {
 	rt := strings.ToLower(roastType)
 	switch {
@@ -105,7 +106,11 @@ func (m Model) shopDetailContent(w int) string {
 		pDim.Render(fmt.Sprintf("%dOZ", coffee.Ounces)) + sep +
 		pDim.Render(strings.ToUpper(coffee.BeanType))
 
-	strength := pDim.Render("roast  ") + roastMeter(roastLevel(coffee.RoastType))
+	level := coffee.RoastLevel
+	if level < 1 || level > 5 {
+		level = roastLevel(coffee.RoastType)
+	}
+	strength := pDim.Render("roast  ") + roastMeter(level)
 
 	price := lipgloss.NewStyle().Foreground(lipgloss.Color(coffee.Color)).Bold(true).
 		Render(fmt.Sprintf("$%d.%02d", coffee.Price/100, coffee.Price%100)) +