Add user database migration, core reusable components, and layout structure

internal/model/models.go

@@ -1,6 +1,12 @@
 package model
 
-import "time"
+import (
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+// ── Work Order ────────────────────────────────────────────────────────────────
 
 type WorkOrder struct {
 	ID             int        `db:"id"              json:"id"`
@@ -41,6 +47,8 @@ type WorkOrderListItem struct {
 	PhotoCount     int        `db:"photo_count"     json:"photo_count"`
 }
 
+// ── Steps / Resources / Attachments / Accounting ─────────────────────────────
+
 type Step struct {
 	ID          int        `db:"id"           json:"id"`
 	WOID        int        `db:"wo_id"        json:"wo_id"`
@@ -90,6 +98,8 @@ type AccountingCode struct {
 	Description string `db:"description" json:"description"`
 }
 
+// ── Resource Registry ─────────────────────────────────────────────────────────
+
 type RegistryPerson struct {
 	ID    int    `db:"id"    json:"id"`
 	Name  string `db:"name"  json:"name"`
@@ -106,10 +116,10 @@ type RegistryVehicle struct {
 }
 
 type RegistryEquipment struct {
-	ID       int    `db:"id"       json:"id"`
-	Name     string `db:"name"     json:"name"`
+	ID       int    `db:"id"        json:"id"`
+	Name     string `db:"name"      json:"name"`
 	AssetTag string `db:"asset_tag" json:"asset_tag"`
-	Category string `db:"category" json:"category"`
+	Category string `db:"category"  json:"category"`
 }
 
 type RegistryMaterial struct {
@@ -119,11 +129,38 @@ type RegistryMaterial struct {
 	PartNumber string `db:"part_number" json:"part_number"`
 }
 
+// ── Users & Auth ──────────────────────────────────────────────────────────────
+
+type User struct {
+	ID           int        `db:"id"            json:"id"`
+	Username     string     `db:"username"      json:"username"`
+	Email        string     `db:"email"         json:"email"`
+	DisplayName  string     `db:"display_name"  json:"display_name"`
+	PasswordHash string     `db:"password_hash" json:"-"`
+	Role         string     `db:"role"          json:"role"`
+	AvatarURL    string     `db:"avatar_url"    json:"avatar_url,omitempty"`
+	Active       bool       `db:"active"        json:"active"`
+	LastLogin    *time.Time `db:"last_login"    json:"last_login"`
+	CreatedAt    time.Time  `db:"created_at"    json:"created_at"`
+}
+
+// LocalClaims is the JWT payload for locally-issued tokens.
+type LocalClaims struct {
+	jwt.RegisteredClaims
+	UserID      int    `json:"uid"`
+	Username    string `json:"username"`
+	Email       string `json:"email"`
+	DisplayName string `json:"name"`
+	Role        string `json:"role"`
+}
+
+// UserClaims is stored in request context after token validation.
 type UserClaims struct {
-	Sub   string
-	Email string
-	Name  string
-	Roles []string
+	UserID      int    `json:"user_id"`
+	Username    string `json:"username"`
+	Email       string `json:"email"`
+	DisplayName string `json:"display_name"`
+	Role        string `json:"role"`
 }
 
 type CtxKey string