feat: give the console customer page a flat address to edit

The admin customer page collected an address (door no, street, suburb,
city, state, postcode, landmark, lat/lng) that the backend had nowhere to
store, so it was silently dropped on save. Add those fields flat onto
appcustomers, matching the reference console's shape, plus an applocationid
for zone scoping.

- GET /admin/customers: add ?applocationid= filter; emit firstname/lastname
  split and the address fields alongside the existing joined name.
- GET /admin/customers/summary (new): stat-tile counts (total/active/blocked)
  scoped like the list, so the client stops deriving them from the full page.
- PATCH /admin/customers/🆔 accept firstname/lastname directly (single name
  still splits as a fallback) and persist every address field; pointer fields
  so an omitted field is not confused with one cleared to empty.

Pagination and keyword search were already present. Additive, nullable
columns — AutoMigrate handles it, no data rewrite.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

models/users.go

@@ -117,21 +117,36 @@ func (MilerProfile) TableName() string {
 }
 
 type AppCustomer struct {
-	Appcustomerid    int        `json:"appcustomerid" gorm:"primaryKey;column:appcustomerid"`
-	Firstname        string     `json:"firstname" gorm:"column:firstname;not null"`
-	Lastname         string     `json:"lastname" gorm:"column:lastname"`
-	Phone            string     `json:"phone" gorm:"column:phone;unique;not null"`
-	Email            string     `json:"email" gorm:"column:email"`
-	Loginpinhash     string     `json:"-" gorm:"column:loginpinhash"`
-	Defaultlatitude  float64    `json:"defaultlatitude" gorm:"column:defaultlatitude"`
-	Defaultlongitude float64    `json:"defaultlongitude" gorm:"column:defaultlongitude"`
-	Defaultpincode   string     `json:"defaultpincode" gorm:"column:defaultpincode"`
-	Devicetoken      string     `json:"device_token,omitempty" gorm:"column:device_token"`
-	Status           string     `json:"status" gorm:"column:status;default:Active"` // Active, Blocked, Deleted
-	Configid         int        `json:"configid" gorm:"column:configid;default:1"`
-	Lastloginat      *time.Time `json:"lastloginat" gorm:"column:lastloginat"`
-	Createdat        time.Time  `json:"createdat" gorm:"column:createdat;default:CURRENT_TIMESTAMP"`
-	Updatedat        time.Time  `json:"updatedat" gorm:"column:updatedat;default:CURRENT_TIMESTAMP"`
+	Appcustomerid    int     `json:"appcustomerid" gorm:"primaryKey;column:appcustomerid"`
+	Firstname        string  `json:"firstname" gorm:"column:firstname;not null"`
+	Lastname         string  `json:"lastname" gorm:"column:lastname"`
+	Phone            string  `json:"phone" gorm:"column:phone;unique;not null"`
+	Email            string  `json:"email" gorm:"column:email"`
+	Loginpinhash     string  `json:"-" gorm:"column:loginpinhash"`
+	Defaultlatitude  float64 `json:"defaultlatitude" gorm:"column:defaultlatitude"`
+	Defaultlongitude float64 `json:"defaultlongitude" gorm:"column:defaultlongitude"`
+	Defaultpincode   string  `json:"defaultpincode" gorm:"column:defaultpincode"`
+	// Flat address on the customer record, kept for parity with the console's
+	// customer page (the reference stored the address this way). Separate from
+	// the normalized appcustomerlocations table, which holds a customer's many
+	// saved delivery addresses; this is the single profile address the console
+	// edits.
+	Doorno        string     `json:"doorno" gorm:"column:doorno"`
+	Address       string     `json:"address" gorm:"column:address"`
+	Suburb        string     `json:"suburb" gorm:"column:suburb"`
+	City          string     `json:"city" gorm:"column:city"`
+	State         string     `json:"state" gorm:"column:state"`
+	Postcode      string     `json:"postcode" gorm:"column:postcode"`
+	Landmark      string     `json:"landmark" gorm:"column:landmark"`
+	Latitude      float64    `json:"latitude" gorm:"column:latitude"`
+	Longitude     float64    `json:"longitude" gorm:"column:longitude"`
+	Applocationid int        `json:"applocationid" gorm:"column:applocationid"` // city/zone, for console scoping
+	Devicetoken   string     `json:"device_token,omitempty" gorm:"column:device_token"`
+	Status        string     `json:"status" gorm:"column:status;default:Active"` // Active, Blocked, Deleted
+	Configid      int        `json:"configid" gorm:"column:configid;default:1"`
+	Lastloginat   *time.Time `json:"lastloginat" gorm:"column:lastloginat"`
+	Createdat     time.Time  `json:"createdat" gorm:"column:createdat;default:CURRENT_TIMESTAMP"`
+	Updatedat     time.Time  `json:"updatedat" gorm:"column:updatedat;default:CURRENT_TIMESTAMP"`
 }
 
 func (AppCustomer) TableName() string {