fix(luci-app-repo): Add proper Package definition with TITLE field

- Add Package/luci-app-repo section with required fields
- Add Build/Compile empty target
- Add package description
- Fix build failure in SDK

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package/secubox/luci-app-repo/Makefile

@@ -7,11 +7,25 @@ PKG_RELEASE:=1
 PKG_MAINTAINER:=SecuBox Team
 PKG_LICENSE:=Apache-2.0
 
-LUCI_TITLE:=LuCI Package Repository Dashboard
-LUCI_DEPENDS:=+secubox-app-repo
-
 include $(INCLUDE_DIR)/package.mk
 
+define Package/luci-app-repo
+  SECTION:=luci
+  CATEGORY:=LuCI
+  SUBMENU:=3. Applications
+  TITLE:=LuCI Package Repository Dashboard
+  DEPENDS:=+secubox-app-repo
+  PKGARCH:=all
+endef
+
+define Package/luci-app-repo/description
+  LuCI dashboard for managing SecuBox local package repository.
+  Provides UI for syncing packages from GitHub releases.
+endef
+
+define Build/Compile
+endef
+
 define Package/luci-app-repo/install
 	$(INSTALL_DIR) $(1)/www/luci-static/resources/view/repo
 	$(INSTALL_DATA) ./htdocs/luci-static/resources/view/repo/*.js $(1)/www/luci-static/resources/view/repo/