feat(layout/note_actions): integrate in-app help button

apps/client/src/widgets/FloatingButtonsDefinitions.tsx

@@ -308,7 +308,7 @@ function ExportImageButtons({ note, triggerEvent, isDefaultViewMode }: FloatingB
 
 function InAppHelpButton({ note }: FloatingButtonContext) {
     const helpUrl = getHelpUrlForNote(note);
-    const isEnabled = !!helpUrl && (!isNewLayout || (note?.type !== "book"));
+    const isEnabled = !!helpUrl && !isNewLayout;
 
     return isEnabled && (
         <FloatingButton

apps/client/src/widgets/ribbon/NoteActionsCustom.tsx

@@ -5,6 +5,7 @@ import Component from "../../components/component";
 import NoteContext from "../../components/note_context";
 import FNote from "../../entities/fnote";
 import { t } from "../../services/i18n";
+import { getHelpUrlForNote } from "../../services/in_app_help";
 import { downloadFileNote, openNoteExternally } from "../../services/open";
 import { openInAppHelpFromUrl } from "../../services/utils";
 import { ViewTypeOptions } from "../collections/interface";
@@ -62,6 +63,7 @@ export default function NoteActionsCustom(props: NoteActionsCustomProps) {
             <SaveToNoteButton {...innerProps} />
             <RefreshButton {...innerProps} />
             <CopyReferenceToClipboardButton {...innerProps} />
+            <InAppHelpButton {...innerProps} />
             <NoteActionsCustomInner {...innerProps} />
         </div>
     );
@@ -223,6 +225,19 @@ function OpenTriliumApiDocsButton({ noteMime }: NoteActionsCustomInnerProps) {
     />;
 }
 
+function InAppHelpButton({ note, noteType }: NoteActionsCustomInnerProps) {
+    const helpUrl = getHelpUrlForNote(note);
+    const isEnabled = !!helpUrl && (noteType !== "book");
+
+    return isEnabled && (
+        <ActionButton
+            icon="bx bx-help-circle"
+            text={t("help-button.title")}
+            onClick={() => helpUrl && openInAppHelpFromUrl(helpUrl)}
+        />
+    );
+}
+
 function AddChildButton({ parentComponent, noteType, viewType, ntxId, isReadOnly }: NoteActionsCustomInnerProps) {
     if (noteType === "book" && viewType === "geoMap") {
         return <ActionButton