wip(lyra): 补充链接模型并注入分类缓存依赖

go/projects/lyra/internal/model/link.go

@@ -0,0 +1,34 @@
+package model
+
+import (
+	"lyra/internal/cache"
+	"time"
+
+	"github.com/jmoiron/sqlx"
+)
+
+type Link struct {
+	ID          int64     `db:"id"`
+	CategoryID  int64     `db:"category_id"`
+	Title       string    `db:"title"`
+	Description string    `db:"description"`
+	URL         string    `db:"url"`
+	Icon        *string   `db:"icon"`
+	Keywords    []string  `db:"keywords"`
+	Sort        int       `db:"sort"`
+	Pinned      bool      `db:"pinned"`
+	PinnedSort  *int      `db:"pinned_sort"`
+	CreatedAt   time.Time `db:"created_at"`
+	UpdatedAt   time.Time `db:"updated_at"`
+}
+
+type LinkModel interface {
+}
+type defaultLinkModel struct {
+	db    *sqlx.DB
+	cache *cache.Cache
+}
+
+func NewLinkModel(db *sqlx.DB, cache *cache.Cache) CategoryModel {
+	return &defaultCategoryModel{db: db, cache: cache}
+}