feat(collection/presentation): add default content to the two slides

apps/server/src/services/hidden_subtree.ts

@@ -345,17 +345,24 @@ function checkHiddenSubtreeRecursively(parentNoteId: string, item: HiddenSubtree
     let branch;
 
     if (!note) {
+        // Missing item, add it.
         ({ note, branch } = noteService.createNewNote({
             noteId: item.id,
             title: item.title,
             type: item.type,
             parentNoteId: parentNoteId,
-            content: "",
+            content: item.content ?? "",
             ignoreForbiddenParents: true
         }));
     } else {
+        // Existing item, check if it's in the right state.
         branch = note.getParentBranches().find((branch) => branch.parentNoteId === parentNoteId);
 
+        if (item.content && note.getContent() !== item.content) {
+            console.log(`Updating content of ${item.id}.`);
+            note.setContent(item.content);
+        }
+
         // Clean up any branches that shouldn't exist according to the meta definition
         // For hidden subtree notes, we want to ensure they only exist in their designated locations
         if (item.enforceBranches || item.id.startsWith("_help")) {

apps/server/src/services/hidden_subtree_templates.ts

@@ -264,6 +264,7 @@ export default function buildHiddenSubtreeTemplates() {
                         id: "_template_presentation_first",
                         type: "text",
                         title: t("hidden_subtree_templates.presentation_slide_first"),
+                        content: t("hidden_subtree_templates.presentation_slide_first"),
                         attributes: [
                             {
                                 name: "template",
@@ -276,6 +277,7 @@ export default function buildHiddenSubtreeTemplates() {
                         id: "_template_presentation_second",
                         type: "text",
                         title: t("hidden_subtree_templates.presentation_slide_second"),
+                        content: t("hidden_subtree_templates.presentation_slide_second"),
                         attributes: [
                             {
                                 name: "template",

packages/commons/src/lib/hidden_subtree.ts

@@ -54,4 +54,10 @@ export interface HiddenSubtreeItem {
      * definitions will be removed.
      */
     enforceAttributes?: boolean;
+    /**
+     * Optionally, a content to be set in the hidden note. If undefined, an empty string will be set instead.
+     *
+     * The value is also checked at every startup to ensure that it's kept up to date according to the definition.
+     */
+    content?: string;
 }