引入统一 Feather 图标系统

src/main/java/com/example/workutils/system/ui/icon/AppIcon.java

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+package com.example.workutils.system.ui.icon;
+
+import org.kordamp.ikonli.Ikon;
+import org.kordamp.ikonli.feather.Feather;
+
+public enum AppIcon {
+    MENU(Feather.MENU),
+    SETTINGS(Feather.SETTINGS),
+    CHEVRON_LEFT(Feather.CHEVRON_LEFT),
+    CHEVRON_RIGHT(Feather.CHEVRON_RIGHT),
+    GIT_SYNC(Feather.REFRESH_CW),
+    GIT_REVIEW(Feather.GIT_BRANCH),
+    DIFF(Feather.COLUMNS),
+    SQL_EXPORT(Feather.DATABASE),
+    MYBATIS_GENERATOR(Feather.CODE),
+    SCANNER(Feather.SEARCH),
+    API_DOC(Feather.FILE_TEXT),
+    EXPORT(Feather.DOWNLOAD),
+    CANCEL(Feather.X),
+    APP(Feather.TOOL);
+
+    private final Feather glyph;
+
+    AppIcon(Feather glyph) {
+        this.glyph = glyph;
+    }
+
+    public Ikon glyph() {
+        return glyph;
+    }
+}

src/main/java/com/example/workutils/system/ui/icon/IconFactory.java

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+package com.example.workutils.system.ui.icon;
+
+import org.kordamp.ikonli.javafx.FontIcon;
+
+import java.util.Objects;
+
+public final class IconFactory {
+    private static final int BUTTON_ICON_SIZE = 16;
+    private static final String ICON_STYLE_CLASS = "app-icon";
+
+    private IconFactory() {
+    }
+
+    public static FontIcon create(AppIcon icon, int size) {
+        FontIcon node = FontIcon.of(Objects.requireNonNull(icon, "icon must not be null").glyph(), size);
+        node.getStyleClass().add(ICON_STYLE_CLASS);
+        return node;
+    }
+
+    public static FontIcon createButtonIcon(AppIcon icon, String accessibleText) {
+        FontIcon node = create(icon, BUTTON_ICON_SIZE);
+        node.setAccessibleText(Objects.requireNonNull(accessibleText, "accessibleText must not be null"));
+        return node;
+    }
+}