Start with an empty document; offer Datei › Neu and Datei › Muster

A first start (nothing in localStorage) now opens a blank document -- one
sheet "Blatt 1" with an empty "Tabelle 1" -- instead of the pre-filled
sample. The file menu gets "Neu" (blank document) and "Muster ·
Umsatzanalyse" (the former seed), both behind a confirm and both starting
a fresh undo history. The toolbar's "Zurücksetzen" button is gone; its job
is now Datei › Muster.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/components/AppToolbar.vue

@@ -196,10 +196,17 @@ async function doImport(action: 'replace' | 'append' | 'confirm') {
   }
 }
 
-function onReset() {
-  if (confirm('Vorbefülltes Dokument wiederherstellen? Alle Änderungen gehen verloren.')) {
+function onNew() {
+  if (confirm('Neues, leeres Dokument anlegen? Alle Änderungen gehen verloren.')) {
+    store.newDocument();
+    toasts.info('Neues Dokument angelegt.');
+  }
+}
+
+function onSample() {
+  if (confirm('Musterdokument laden? Alle Änderungen gehen verloren.')) {
     store.resetToSeed();
-    toasts.info('Dokument zurückgesetzt.');
+    toasts.info('Musterdokument geladen.');
   }
 }
 </script>
@@ -291,6 +298,9 @@ function onReset() {
     <div class="menu-wrap">
       <button class="btn" @click="fileMenuOpen = !fileMenuOpen">Datei ▾</button>
       <ul v-if="fileMenuOpen" class="menu" @click="fileMenuOpen = false">
+        <li><button @click="onNew">Neu</button></li>
+        <li><button @click="onSample">Muster · Umsatzanalyse</button></li>
+        <li class="sep" />
         <li><button @click="pickFile">Importieren … (.json .csv .xlsx)</button></li>
         <li class="sep" />
         <li><button @click="runJsonExport">Export · Dokument (.json)</button></li>
@@ -310,7 +320,6 @@ function onReset() {
     >
       <ToolbarIcon :name="themeIcon" />
     </button>
-    <button class="btn" @click="onReset">Zurücksetzen</button>
 
     <input ref="fileInput" type="file" accept=".json,.csv,.xlsx" hidden @change="onFileChosen" />
     <span v-if="busy" class="busy">Verarbeite …</span>

src/data/seed.ts

@@ -1,4 +1,7 @@
 /**
+ * Document templates: `createBlankDocument()` (Datei › Neu, and what a first
+ * start opens) and `createSeedDocument()` (Datei › Muster).
+ *
  * The pre-filled document ("roter Faden" of the study), in the v2 canvas model:
  * one sheet ("Analyse") carrying three table objects and a chart object, plus a
  * second empty sheet to try things out.
@@ -144,3 +147,21 @@ export function createSeedDocument(): DocumentState {
     macros: [],
   };
 }
+
+/** An empty document: one sheet with one empty table, ready to type into. */
+export function createBlankDocument(): DocumentState {
+  const table = makeTable('Tabelle 1', 40, 40, 12, 6, []);
+  const sheet = { id: nextId('sheet'), name: 'Blatt 1', objects: [table] };
+  return {
+    version: 2,
+    sheets: [sheet],
+    activeSheetId: sheet.id,
+    activeObjectId: table.id,
+    selection: { tableId: table.id, anchor: { col: 0, row: 0 }, focus: { col: 0, row: 0 } },
+    locale: 'de-DE',
+    csvDelimiter: ',',
+    customFunctions: [],
+    namedRanges: [],
+    macros: [],
+  };
+}

src/store/__tests__/document.spec.ts

@@ -120,6 +120,19 @@ describe('seed document acceptance (canvas model)', () => {
     expect(val(s, 'Übersicht', 'B2')).toBe(5970);
   });
 
+  it('newDocument replaces everything with one empty sheet + table and a fresh history', () => {
+    const s = fresh();
+    setCell(s, 'Umsatz', 'B2', '99999');
+    s.newDocument();
+    expect(s.doc.sheets).toHaveLength(1);
+    expect(s.doc.sheets[0].name).toBe('Blatt 1');
+    const [table] = s.doc.sheets[0].objects;
+    expect(table.kind === 'table' && table.name).toBe('Tabelle 1');
+    expect(table.kind === 'table' && Object.keys(table.cells)).toEqual([]);
+    expect(s.doc.namedRanges).toEqual([]);
+    expect(s.canUndo.value).toBe(false);
+  });
+
   it('inserting a new table and referencing it across sheets works', () => {
     const s = fresh();
     const sheet2 = s.doc.sheets[1].id;

src/store/document.ts

@@ -77,7 +77,7 @@ import type {
   TextObject,
 } from './types';
 import { defaultTableView, DEFAULT_ROW_H, MIN_GRID_SIZE, MAX_GRID_SIZE } from './types';
-import { createSeedDocument } from '../data/seed';
+import { createBlankDocument, createSeedDocument } from '../data/seed';
 import { validateDocument } from '../io/json';
 
 const STORAGE_KEY = 'numolus:doc:v2';
@@ -535,7 +535,7 @@ function loadInitial(): DocumentState {
   } catch {
     /* missing / corrupt / stale-schema -> clean fallback */
   }
-  return createSeedDocument();
+  return createBlankDocument();
 }
 
 // ---- store singleton --------------------------------------------------
@@ -2848,6 +2848,11 @@ function createStore() {
     applyDocumentState(next);
     resetHistory();
   }
+  /** Datei › Neu: an empty document. */
+  function newDocument() {
+    replaceDocument(createBlankDocument());
+  }
+  /** Datei › Muster: the pre-filled sample document. */
   function resetToSeed() {
     replaceDocument(createSeedDocument());
   }
@@ -3040,6 +3045,7 @@ function createStore() {
     pointDrag,
     // document
     replaceDocument,
+    newDocument,
     resetToSeed,
     appendSheets,
     addTableFromCells,