chore: update build artifacts for v1.5.0

.agent/rules/rules.md

@@ -48,6 +48,11 @@ trigger: always_on
 - **Browser**: Allowed for documentation and safe browsing. No automated logins without permission.
 - **Terminal**: No `rm -rf`. Run tests (`pytest` etc.) after logic changes.
 
+## 7. Mandatory Testing Policy 🧪
+**CRITICAL: No logic or UI fix is complete without a corresponding automated test.**
+- If you fix a regression or implement a new UI feature, you **MUST** write or update a test in `tests/test_dom.js` or `test_logic.js`. 
+- Refactoring MUST include verifying that no click listeners drop out. This guarantees that features like modal toggles stay functional.
+
 ## 7. Requirements-Konsistenz 📋
 Alle umgesetzten Anforderungen müssen mit `REQUIREMENTS.md` übereinstimmen.
 1.  **Vor der Umsetzung prüfen**: Passt die neue Anforderung zu den bestehenden Requirements?

README.md

@@ -8,9 +8,14 @@ Ein intelligentes Bookmarklet für die Mitarbeiter-Kantine der Bessa App. Dieses
 *   **Bestell-Countdown:** ⏳ Roter Alarm 1h vor Bestellschluss.
 *   **Smart Highlights:** 🌟 Markiere deine Favoriten (z.B. "Schnitzel", "Vegetarisch").
 *   **Bestellstatus:** Farbige Indikatoren für bestellte Menüs.
-*   **Kostenkontrolle:** Summiert automatisch den Gesamtpreis der Woche.
-*   **Session Reuse:** Nutzt automatisch eine bestehende Login-Session (Loggt dich automatisch ein).
-*   **Menu Badges:** Zeigt Menü-Codes (M1, M2+) direkt im Header.
+*   **Kostenkontrolle:** 💰 Summiert automatisch den Gesamtpreis der Woche.
+*   **Bestellhistorie:** 📜 Gruppiert nach Monat & KW mit inkrementellem Delta-Cache.
+*   **Session Reuse:** 🔑 Nutzt automatisch eine bestehende Login-Session.
+*   **Menu Badges:** 🏷️ Zeigt Menü-Codes (M1, M2+) direkt im Header.
+*   **Menü-Flagging:** 🔔 Ausverkaufte Menüs beobachten und bei Verfügbarkeit benachrichtigt werden.
+*   **Version-Menü:** 📦 Versionsliste mit Installer-Links, Dev-Mode Toggle und Downgrade-Support.
+*   **Cache leeren:** 🗑️ Lokalen Cache mit einem Klick bereinigen (im Version-Menü).
+*   **Favicon:** 🍽️ Eigenes Icon für die Lesezeichenleiste.
 *   **Changelog:** Übersicht über neue Funktionen direkt im Installer.
 
 ## 📦 Installation
@@ -19,7 +24,7 @@ Ein intelligentes Bookmarklet für die Mitarbeiter-Kantine der Bessa App. Dieses
 2.  Ziehe den blauen Button **"Kantine Wrapper"** in deine Lesezeichen-Leiste.
 3.  Fertig!
 
-##  usage
+## 🍽️ Nutzung
 
 1.  Navigiere zu [https://web.bessa.app/knapp-kantine](https://web.bessa.app/knapp-kantine).
 2.  Klicke auf das **"Kantine Wrapper"** Lesezeichen.
@@ -28,24 +33,38 @@ Ein intelligentes Bookmarklet für die Mitarbeiter-Kantine der Bessa App. Dieses
 ## 🛠️ Entwicklung
 
 ### Voraussetzungen
-*   Node.js (optional, nur für Build-Scripts)
+*   Node.js (für Build- und Test-Scripts)
+*   Python 3 (für Build-Tests)
 *   Bash (für `build-bookmarklet.sh`)
 
 ### Projektstruktur
 
 #### Quelldateien
-*   `kantine.js`: Der Haupt-Quellcode des Bookmarklets (UI, API-Logik, Rendering).
-*   `style.css`: Das komplette Design (CSS mit Light/Dark Mode).
-*   `mock-data.js`: Mock-Fetch-Interceptor mit realistischen Dummy-Menüdaten für Standalone-Tests.
-*   `build-bookmarklet.sh`: Build-Skript – erzeugt alle `dist/`-Artefakte.
-*   `test_build.py`: Automatische Build-Tests, laufen am Ende jedes Builds.
+| Datei | Beschreibung |
+|-------|-------------|
+| `kantine.js` | Haupt-Quellcode des Bookmarklets (UI, API-Logik, Rendering). |
+| `style.css` | Komplettes Design (CSS mit Light/Dark Mode). |
+| `favicon.svg` | Favicon für die Installer-Seite (Dreieck + Gabel & Messer). |
+| `mock-data.js` | Mock-Fetch-Interceptor mit realistischen Dummy-Menüdaten für Standalone-Tests. |
+| `build-bookmarklet.sh` | Build-Skript – erzeugt alle `dist/`-Artefakte und führt alle Tests aus. |
+| `release.sh` | Release-Skript – Commit, Tag, Push zu allen Remotes. |
+| `version.txt` | Aktuelle Versionsnummer (SemVer). |
+| `changelog.md` | Änderungshistorie aller Versionen. |
+| `REQUIREMENTS.md` | System Requirements Specification (SRS). |
+
+#### Tests
+| Datei | Beschreibung |
+|-------|-------------|
+| `test_logic.js` | Logik-Unit-Tests (statische Analyse, Syntax-Check, Sandbox-Ausführung). |
+| `tests/test_dom.js` | DOM-Interaktionstests via JSDOM (prüft Event-Listener-Bindung aller UI-Komponenten). |
+| `test_build.py` | Build-Artefakt-Validierung (Existenz, Inhalt). |
 
 #### `dist/` – Build-Artefakte
 | Datei | Beschreibung |
 |-------|-------------|
 | `bookmarklet.txt` | Die rohe Bookmarklet-URL (`javascript:...`). Enthält CSS + JS als selbstextrahierendes IIFE. Kann direkt als Lesezeichen-URL eingefügt werden. |
 | `bookmarklet-payload.js` | Der entpackte Bookmarklet-Payload (JS). Erstellt `<style>` + `<script>` Elemente und injiziert sie in die Seite. Nützlich zum Debuggen. |
-| `install.html` | Installer-Seite mit Drag & Drop Button, Anleitung, Feature-Liste und Changelog. Kann lokal oder gehostet geöffnet werden. |
+| `install.html` | Installer-Seite mit Drag & Drop Button, Favicon, Anleitung, Feature-Liste und Changelog. Kann lokal oder gehostet geöffnet werden. |
 | `kantine-standalone.html` | Eigenständige HTML-Datei mit eingebettetem CSS + JS + **Mock-Daten**. Lädt automatisch Dummy-Menüs für UI-Tests ohne API-Zugriff. |
 
 ### Build
@@ -55,5 +74,15 @@ Um Änderungen an `kantine.js` oder `style.css` wirksam zu machen, führe den Bu
 ./build-bookmarklet.sh
 ```
 
+### Release
+Erstellt einen Git-Tag, committet Build-Artefakte und pusht zu allen Remotes:
+
+```bash
+./release.sh
+```
+
+## ⚠️ Hinweis
+Dieses Projekt enthält zum überwiegenden Teil **KI-generierten Code**. Der Code wurde mithilfe von KI-Assistenten erstellt, überprüft und iterativ verfeinert.
+
 ## 📝 Lizenz
 Internes Tool.

REQUIREMENTS.md

@@ -40,7 +40,7 @@ Das System umfasst die Darstellung von Menüplänen in einer Wochenübersicht, d
 | FR-033 | Es muss möglich sein, dasselbe Menü mehrfach zu bestellen. Bei Mehrfachbestellungen muss die Anzahl angezeigt werden. | Niedrig | v1.0.1 |
 | **Kostentransparenz & Bestellhistorie** | | | |
 | FR-040 | Das System muss die Gesamtkosten aller Bestellungen einer Woche automatisch berechnen und anzeigen. | Mittel | v1.1.0 |
-| FR-041 | Das System muss dem Benutzer eine paginierte oder vollständige Bestellhistorie (gruppiert nach Monat und KW) mit Fortschrittsanzeige auf Abruf in einem Modal bereitstellen. | Mittel | v1.4.0 |
+| FR-041 | Das System muss dem Benutzer eine Bestellhistorie (gruppiert nach Monat und KW) mit Fortschrittsanzeige auf Abruf in einem Modal bereitstellen. Die Historie muss über ein lokales Delta-Caching verfügen, um Ladezeiten zu minimieren. | Mittel | v1.4.0 (Update v1.4.7) |
 | **Bestell-Countdown** | | | |
 | FR-050 | Das System muss vor Bestellschluss einen visuell hervorgehobenen Countdown anzeigen. | Mittel | v1.1.0 |
 | **Menü-Flagging & Benachrichtigungen** | | | |
@@ -54,13 +54,16 @@ Das System umfasst die Darstellung von Menüplänen in einer Wochenübersicht, d
 | FR-071 | Die Hervorhebung muss anhand von Menüname und Beschreibung erfolgen (Substring-Matching, case-insensitive). | Niedrig | v1.1.0 |
 | FR-072 | Hervorgehobene Menüs müssen ein Tag-Badge mit dem matchenden Schlagwort anzeigen. | Niedrig | v1.2.4 |
 | FR-073 | Die Nächste-Woche-Navigation muss die Anzahl der dort gefundenen Highlights als Badge anzeigen. | Niedrig | v1.2.5 |
-| **Darstellung & Theming** | | | |
 | FR-080 | Das System muss einen hellen und einen dunklen Darstellungsmodus (Light/Dark Theme) unterstützen. | Niedrig | v1.0.1 |
 | FR-081 | Die Theme-Präferenz des Benutzers muss persistent gespeichert werden. | Niedrig | v1.0.1 |
 | FR-082 | Das System muss beim erstmaligen Laden die Betriebssystem-Präferenz für das Farbschema berücksichtigen. | Niedrig | v1.0.1 |
+| **Header UI & Navigation** | | | |
+| FR-090 | Die Hauptnavigation (Wochen-Toggles) muss linksbündig neben dem App-Titel positioniert sein. | Niedrig | v1.5.0 |
+| FR-091 | Ein dynamisches Alarm-Icon im Header muss den Überwachungsstatus geflaggter Menüs anzeigen (Gelb=Überwachung aktiv aber kein Menü verfügbar, Grün=Mindestens ein Menü verfügbar, Versteckt=keine Flags). Der Tooltip muss den Zeitpunkt der letzten Prüfung als relativen String (z.B. "vor 4 Min.") enthalten. | Mittel | v1.5.0 (Update v1.4.10) |
+| FR-092 | Solange Menüdaten für die Nächste Woche verfügbar sind, aber noch keine Bestellungen getätigt wurden, muss der entsprechende Navigation-Button animiert und farblich (Gelb) hervorgehoben werden. Nach der ersten Bestellung muss die Hervorhebung automatisch erlöschen. Zusätzlich muss beim erstmaligen Erscheinen der Daten ein einmaliger Toast-Hinweis angezeigt werden. | Mittel | v1.6.0 (Update v1.4.21) |
 | **Benutzer-Feedback** | | | |
-| FR-090 | Alle benutzerrelevanten Aktionen (Bestellung, Stornierung, Fehler) müssen durch nicht-blockierende Benachrichtigungen (Toasts) bestätigt werden. | Mittel | v1.0.1 |
-| FR-091 | Bei einem Verbindungsfehler muss ein Fehlerdialog mit Fallback-Link zur Originalseite angezeigt werden. | Mittel | v1.0.1 |
+| FR-095 | Alle benutzerrelevanten Aktionen (Bestellung, Stornierung, Fehler) müssen durch nicht-blockierende Benachrichtigungen (Toasts) bestätigt werden. | Mittel | v1.0.1 |
+| FR-096 | Bei einem Verbindungsfehler muss ein Fehlerdialog mit Fallback-Link zur Originalseite angezeigt werden. | Mittel | v1.0.1 |
 | **Nächste-Woche-Badge** | | | |
 | FR-100 | Die Navigation zur nächsten Woche muss ein Badge anzeigen, das den Überblick über den Bestellstatus der kommenden Woche visualisiert (bestellt / bestellbar / gesamt). | Niedrig | v1.0.1 |
 | **Update-Management** | | | |
@@ -69,6 +72,9 @@ Das System umfasst die Darstellung von Menüplänen in einer Wochenübersicht, d
 | FR-112 | Benutzer müssen eine Versionsliste mit Installationslinks einsehen können (Versionsmenü). | Niedrig | v1.3.0 |
 | FR-113 | Es muss möglich sein, zu einer älteren Version zurückzukehren (Downgrade). | Niedrig | v1.3.0 |
 | FR-114 | Ein Dev-Mode muss es ermöglichen, zwischen stabilen Releases und Entwicklungs-Tags umzuschalten. | Niedrig | v1.3.0 |
+| FR-115 | Das Versionsmenü muss Links zur Erstellung von Feature-Requests und Bug-Reports auf GitHub enthalten. | Niedrig | v1.4.4 |
+| FR-116 | Das Versionsmenü muss eine Funktion zum Leeren des lokalen Caches bereitstellen, um bei hartnäckigen Fehlern alle gespeicherten Daten bereinigen zu können. | Niedrig | v1.4.16 |
+| FR-117 | Die Installer-Seite muss ein eingebettetes Favicon bereitstellen, das beim Drag & Drop in die Lesezeichenleiste als Icon für das Bookmarklet übernommen wird. | Niedrig | v1.4.19 |
 
 ## 3. Nicht-funktionale Anforderungen
 
@@ -81,7 +87,7 @@ Das System umfasst die Darstellung von Menüplänen in einer Wochenübersicht, d
 | **Benutzbarkeit** | NFR-005 | Die Oberfläche muss auf mobilen Geräten fehlerfrei nutzbar sein. | Viewports ab 320px Breite |
 | **Benutzbarkeit** | NFR-006 | Alle interaktiven Elemente müssen Tooltips oder Hilfetexte bieten. | 100% Coverage |
 | **Benutzbarkeit** | NFR-007 | Die Benutzeroberfläche muss vollständig in deutscher Sprache sein. | Vollständige Lokalisierung |
-| **Wartbarkeit** | NFR-008 | Die Build-Artefakte müssen durch automatisierte Tests validiert werden. | Build-Tests + Logik-Tests |
+| **Wartbarkeit** | NFR-008 | Die Build-Artefakte müssen durch automatisierte Tests validiert werden. | Build-Tests + Logik-Tests + DOM-Tests |
 
 ## 4. Technische Randbedingungen
 *   **Deployment**: Das System wird als Bookmarklet ausgeliefert, das auf der Bessa-Webseite ausgeführt wird.
@@ -89,4 +95,4 @@ Das System umfasst die Darstellung von Menüplänen in einer Wochenübersicht, d
 *   **Datenhaltung**: Clientseitig via `localStorage` (Menü-Cache, Flags, Highlights, Theme) und `sessionStorage` (Auth-Token).
 *   **Build**: Bash-basiertes Build-Script, das Bookmarklet-URL, Standalone-HTML und Installer-Seite generiert.
 *   **Versionierung**: SemVer, verwaltet über GitHub Releases/Tags.
-*   **Tests**: Python-basierte Build-Tests + Node.js-basierte Logik-Tests.
+*   **Tests**: Python-basierte Build-Tests (`python3`) + Node.js-basierte Logik-Tests + Node.js-basierte DOM-Interaktionstests (JSDOM).

build-bookmarklet.sh

@@ -7,6 +7,7 @@ SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 DIST_DIR="$SCRIPT_DIR/dist"
 CSS_FILE="$SCRIPT_DIR/style.css"
 JS_FILE="$SCRIPT_DIR/kantine.js"
+FAVICON_FILE="$SCRIPT_DIR/favicon.png"
 
 # === VERSION ===
 if [ -f "$SCRIPT_DIR/version.txt" ]; then
@@ -24,10 +25,33 @@ echo "=== Kantine Bookmarklet Builder ($VERSION) ==="
 if [ ! -f "$CSS_FILE" ]; then echo "ERROR: $CSS_FILE not found"; exit 1; fi
 if [ ! -f "$JS_FILE" ]; then echo "ERROR: $JS_FILE not found"; exit 1; fi
 
+# Generate favicon.png from favicon_base.png if base exists
+FAVICON_BASE="$SCRIPT_DIR/favicon_base.png"
+if [ -f "$FAVICON_BASE" ]; then
+    echo "Generating 32x32 favicon.png from favicon_base.png..."
+    python3 -c "
+import sys
+from PIL import Image
+try:
+    img = Image.open('$FAVICON_BASE')
+    img_resized = img.resize((32, 32), Image.Resampling.LANCZOS)
+    img_resized.save('$FAVICON_FILE')
+except Exception as e:
+    print('Favicon generation error:', e)
+    sys.exit(1)
+"
+fi
+
+if [ ! -f "$FAVICON_FILE" ]; then echo "ERROR: $FAVICON_FILE not found"; exit 1; fi
+
+# Generate favicon Base64 data URI from PNG
+FAVICON_B64=$(base64 -w0 "$FAVICON_FILE")
+FAVICON_URL="data:image/png;base64,${FAVICON_B64}"
+
 CSS_CONTENT=$(cat "$CSS_FILE")
 
-# Inject version into JS
-JS_CONTENT=$(cat "$JS_FILE" | sed "s|{{VERSION}}|$VERSION|g")
+# Inject version and favicon into JS
+JS_CONTENT=$(cat "$JS_FILE" | sed "s|{{VERSION}}|$VERSION|g" | sed "s|{{FAVICON_DATA_URI}}|$FAVICON_URL|g")
 
 # === 1. Build standalone HTML (for local testing/dev) ===
 cat > "$DIST_DIR/kantine-standalone.html" << HTMLEOF
@@ -101,6 +125,7 @@ cat > "$DIST_DIR/install.html" << INSTALLEOF
 <head>
     <meta charset="UTF-8">
     <title>Kantine Wrapper Installer ($VERSION)</title>
+    <link rel="icon" type="image/png" href="$FAVICON_URL">
     <style>
         body { font-family: 'Inter', sans-serif; max-width: 600px; margin: 40px auto; padding: 20px; background: #1a1a2e; color: #eee; }
         h1 { color: #029AA8; } /* Knapp Teal */
@@ -122,7 +147,11 @@ cat > "$DIST_DIR/install.html" << INSTALLEOF
 </head>
 <body>
     <div style="text-align: center; margin-bottom: 30px;">
-        <h1 style="margin-bottom: 5px;">🍽️ Kantine Wrapper <span style="font-size:0.5em; opacity:0.6; font-weight:400; vertical-align:middle; margin-left:10px;">$VERSION</span></h1>
+        <h1 style="margin-bottom: 5px; display: flex; align-items: center; justify-content: center; gap: 10px;">
+            <img src="$FAVICON_URL" alt="Logo" style="width: 38px; height: 38px;"> 
+            Kantine Wrapper 
+            <span style="font-size:0.5em; opacity:0.6; font-weight:400; margin-left:5px;">$VERSION</span>
+        </h1>
         <p style="font-size: 1.2rem; color: #a0aec0; margin-top: 0; font-style: italic;">"Mahlzeit! Jetzt bessa einfach."</p>
     </div>
     
@@ -171,7 +200,7 @@ cat > "$DIST_DIR/install.html" << INSTALLEOF
     </div>
 
     <div style="text-align: center; margin-top: 40px; color: #5c6b7f; font-size: 0.8rem;">
-        <p>Powered by <strong>Kaufi-Kitchen</strong> 👨‍🍳</p>
+        <p>Powered by <strong>Kaufis-Kitchen</strong> 👨‍🍳</p>
     </div>
 
 
@@ -200,9 +229,9 @@ echo "document.getElementById('bookmarklet-link').href = " >> "$DIST_DIR/install
 echo "$JS_CONTENT" | python3 -c "
 import sys, json, urllib.parse
 
-# 1. Read JS and Replace VERSION
+# 1. Read JS and Replace VERSION + Favicon
 js_template = sys.stdin.read()
-js = js_template.replace('{{VERSION}}', '$VERSION')
+js = js_template.replace('{{VERSION}}', '$VERSION').replace('{{FAVICON_DATA_URI}}', '$FAVICON_URL')
 
 # 2. Prepare CSS for injection via createElement('style')
 css = open('$CSS_FILE').read().replace('\n', ' ').replace('  ', ' ')
@@ -236,6 +265,16 @@ $CHANGELOG_HTML
 EOF
 
 cat >> "$DIST_DIR/install.html" << INSTALLEOF
+        // Dynamic favicon injection — setTimeout ensures it runs AFTER
+        // htmlpreview.github.io's document.write() processing completes
+        setTimeout(function() {
+            document.querySelectorAll('link[rel*="icon"]').forEach(function(el) { el.remove(); });
+            var fi = document.createElement('link');
+            fi.rel = 'icon';
+            fi.type = 'image/png';
+            fi.href = '$FAVICON_URL';
+            document.head.appendChild(fi);
+        }, 0);
         document.getElementById('bookmarklet-link').textContent = 'Kantine $VERSION';
     </script>
 </body>
@@ -258,6 +297,14 @@ if [ $LOGIC_EXIT -ne 0 ]; then
     exit 1
 fi
 
+echo "=== Running DOM Interaction Tests ==="
+node "$SCRIPT_DIR/tests/test_dom.js"
+DOM_EXIT=$?
+if [ $DOM_EXIT -ne 0 ]; then
+    echo "❌ DOM UI tests FAILED! Regressions detected."
+    exit 1
+fi
+
 echo "=== Running Build Tests ==="
 python3 "$SCRIPT_DIR/test_build.py"
 TEST_EXIT=$?
@@ -267,23 +314,4 @@ if [ $TEST_EXIT -ne 0 ]; then
 fi
 echo "✅ All build tests passed."
 
-# === 5. Commit, tag, and push ===
-echo ""
-echo "=== Committing & Pushing ==="
-git add -A
-git commit -m "dist files for $VERSION built" --allow-empty
 
-echo ""
-echo "=== Tagging $VERSION ==="
-if git rev-parse "$VERSION" >/dev/null 2>&1; then
-    git tag -f "$VERSION"
-    echo "🔄 Tag $VERSION moved to current commit."
-else
-    git tag "$VERSION"
-    echo "✅ Created tag: $VERSION"
-fi
-
-git push
-git push origin --force tag "$VERSION"
-git push github --force tag "$VERSION"
-echo "✅ Pushed commit + tag $VERSION"

changelog.md

@@ -1,9 +1,16 @@
-## v1.4.2 (2026-02-23)
-- **Fix**: Das "Heute Bestellt" Menü leuchtet nun stimmig im Design-Violett statt Blau.
-- **Fix**: Abfangen des GitHub API Rate Limit (403) im Versionsdialog mit einer freundlicheren Fehlermeldung, da der User-Agent im Browser nicht manuell gesetzt werden darf.
+## v1.5.0 (2026-02-26)
+Das große "Quality of Life"-Update! Zusammenfassung aller Features und Fixes seit v1.4.0:
+
+- ✨ **Bestellhistorie**: Übersichtliche Historie direkt in der App – gruppiert nach Jahr/Monat, inklusive Summen, Stati (Offen/Abgeschlossen/Storniert) und Delta-Cache für rasantes Laden.
+- ⚡ **Smart Cache & Performance**: Massive Reduzierung von API-Calls und Ladezeiten durch intelligenten lokalen Cache. Das Bookmarklet startet nun praktisch verzögerungsfrei.
+- 🔄 **GitHub Release Management**: In-App Versions-Menü mit Auto-Update Check (`🆕` Icon). Umschalten zwischen "Stable" und "Dev" Versionen sowie Downgrade-Möglichkeit direkt über die GitHub API.
+- 🌟 **Smart Highlights & UX**: Speisen-Favoriten leuchten nun im Design-Violett und erhalten Feature-Badges. Der Bestell-Badge für nächste Woche filtert nun intelligent personalisierte Highlights voraus.
+- 🔔 **Bestell-Warnung & Notifications**: Der System-Alarm berücksichtigt nun Sessions korrekt, zeigt dynamische Farbwechsel (gelb/grün/rot) und warnt verlässlich vor dem Bestellschluss (10:00 Uhr). Altlasten von Vortagen werden automatisch geputzt.
+- 🎨 **Eigenes Favicon**: Das Bookmarklet und der Installer haben nun ein eigenes Icon (Dreieck mit Besteck), das beim Hineinziehen in die Lesezeichenleiste übernommen wird (dynamisch generiert als lokales PNG).
+- 🧹 **Lokaler Cache-Clear**: Ein in das Versions-Menü eingebauter "Papierkorb", der ausschließlich fehlerhafte Kantinen-Caches putzt, ohne dabei versehentlich die aktive Bessa-Host-Session zu zerstören.
+- 🔒 **Sitzungs-Persistenz**: Die Login-Session überdauert jetzt neue Tabs, Fenster und Version-Upgrades reibungslos durch den Wechsel auf `localStorage`.
+- 🛡️ **Testing & Stabilität**: Vollautomatische DOM- und Logik-Testing-Suites in der Release-Pipeline integriert. Fehlerhafte UI-Buttons gehören der Vergangenheit an.
 
-## v1.4.1 (2026-02-22)
-- **UX Verbesserungen**: Bestellhistorie gruppiert nach Jahren und Monaten mittels einklappbarem Akkordeon. Monatssummen integriert und Stati farblich abgehoben (Offen, Abgeschlossen, Storniert).
 
 ## v1.4.0 (2026-02-22)
 - **Feature**: Bestellhistorie per Knopfdruck abrufbar. Übersichtliche Darstellung, gruppiert nach Monaten und Kalenderwochen, inklusive Stornos. 📜✨

debug_test.js

@@ -0,0 +1,15 @@
+const fs = require('fs');
+const jsCode = fs.readFileSync('kantine.js', 'utf8').replace('(function () {', '').replace(/}\)\(\);$/, '');
+try {
+    const vm = require('vm');
+    new vm.Script(jsCode);
+} catch (e) {
+    console.error(e.message);
+    const lines = jsCode.split('\n');
+    console.error("Around line", e.loc?.line);
+    if(e.loc?.line) {
+       console.log(lines[e.loc.line - 2]);
+       console.log(lines[e.loc.line - 1]);
+       console.log(lines[e.loc.line]);
+    }
+}

dist/kantine-standalone.html

@@ -197,6 +197,32 @@ body {
     color: white;
 }
 
+/* Notification state for Next Week */
+.nav-btn.new-week-available {
+    animation: goldPulse 2s infinite;
+    border-color: #f59e0b;
+    color: var(--accent-color);
+}
+
+.nav-btn.new-week-available.active {
+    color: white;
+}
+
+@keyframes goldPulse {
+    0% {
+        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7);
+    }
+
+    70% {
+        box-shadow: 0 0 0 10px rgba(245, 158, 11, 0);
+    }
+
+    100% {
+        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
+    }
+}
+
+
 /* Badge for nav buttons (day count indicator) */
 .nav-badge {
     background-color: var(--error-color);
@@ -786,7 +812,7 @@ body {
     /* No opacity/filter here - fully visible */
     background: var(--bg-card);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
-    border: 1px solid var(--accent-color);
+    border: 1px solid #8b5cf6;
     border-radius: 8px;
     padding: 1rem;
     margin: 0 -1rem 1.5rem -1rem;
@@ -795,7 +821,7 @@ body {
 }
 
 .menu-item.today-ordered {
-    border: 2px solid var(--accent-color);
+    border: 2px solid #8b5cf6;
     box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
     border-radius: 8px;
     padding: 1rem;
@@ -1606,8 +1632,6 @@ body {
 .version-list {
     list-style: none;
     padding: 0;
-    max-height: 350px;
-    overflow-y: auto;
     margin: 0;
 }
 
@@ -1955,8 +1979,8 @@ body {
     let currentWeekNumber = getISOWeek(new Date());
     let currentYear = new Date().getFullYear();
     let displayMode = 'this-week';
-    let authToken = sessionStorage.getItem('kantine_authToken');
-    let currentUser = sessionStorage.getItem('kantine_currentUser');
+    let authToken = localStorage.getItem('kantine_authToken');
+    let currentUser = localStorage.getItem('kantine_currentUser');
     let orderMap = new Map();
     let userFlags = new Set(JSON.parse(localStorage.getItem('kantine_flags') || '[]'));
     let pollIntervalId = null;
@@ -1976,6 +2000,16 @@ body {
         // Replace entire page content
         document.title = 'Kantine Weekly Menu';
 
+        // Inject custom favicon (triangle + fork & knife PNG)
+        if (document.querySelectorAll) {
+            document.querySelectorAll('link[rel*="icon"]').forEach(el => el.remove());
+        }
+        const favicon = document.createElement('link');
+        favicon.rel = 'icon';
+        favicon.type = 'image/png';
+        favicon.href = 'data:image/png;base64,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';
+        document.head.appendChild(favicon);
+
         // Inject Google Fonts if not already present
         if (!document.querySelector('link[href*="fonts.googleapis.com/css2?family=Inter"]')) {
             const fontLink = document.createElement('link');
@@ -1997,9 +2031,16 @@ body {
                     <div class="brand">
                         <span class="material-icons-round logo-icon">restaurant_menu</span>
                         <div class="header-left">
-                            <h1>Kantinen Übersicht <small class="version-tag" style="font-size: 0.6em; opacity: 0.7; font-weight: 400; cursor: pointer;" title="Klick für Versionsmenü">v1.4.2</small></h1>
+                            <h1>Kantinen Übersicht <small class="version-tag" style="font-size: 0.6em; opacity: 0.7; font-weight: 400; cursor: pointer;" title="Klick für Versionsmenü">v1.5.0</small></h1>
                             <div id="last-updated-subtitle" class="subtitle"></div>
                         </div>
+                        <div class="nav-group" style="margin-left: 1rem;">
+                            <button id="btn-this-week" class="nav-btn active">Diese Woche</button>
+                            <button id="btn-next-week" class="nav-btn">Nächste Woche</button>
+                        </div>
+                        <button id="alarm-bell" class="icon-btn hidden" aria-label="Benachrichtigungen" title="Keine beobachteten Menüs" style="margin-left: -0.5rem;">
+                            <span class="material-icons-round" id="alarm-bell-icon" style="color:var(--text-secondary); transition: color 0.3s;">notifications</span>
+                        </button>
                     </div>
                     <div class="header-center-wrapper">
                         <div id="header-week-info" class="header-week-info"></div>
@@ -2015,10 +2056,6 @@ body {
                         <button id="btn-highlights" class="icon-btn" aria-label="Persönliche Highlights verwalten" title="Persönliche Highlights verwalten">
                             <span class="material-icons-round">label</span>
                         </button>
-                        <div class="nav-group">
-                            <button id="btn-this-week" class="nav-btn active">Diese Woche</button>
-                            <button id="btn-next-week" class="nav-btn">Nächste Woche</button>
-                        </div>
                         <button id="theme-toggle" class="icon-btn" aria-label="Toggle Theme">
                             <span class="material-icons-round theme-icon">light_mode</span>
                         </button>
@@ -2136,7 +2173,7 @@ body {
                     </div>
                     <div class="modal-body">
                         <div style="margin-bottom: 1rem;">
-                            <strong>Aktuell:</strong> <span id="version-current">v1.4.2</span>
+                            <strong>Aktuell:</strong> <span id="version-current">v1.5.0</span>
                         </div>
                         <div class="dev-toggle">
                             <label style="display:flex;align-items:center;gap:8px;cursor:pointer;">
@@ -2144,9 +2181,20 @@ body {
                                 <span>Dev-Mode (alle Tags anzeigen)</span>
                             </label>
                         </div>
-                        <div id="version-list-container" style="margin-top:1rem;">
+                        <div id="version-list-container" style="margin-top:1rem; max-height: 250px; overflow-y: auto;">
                             <p style="color:var(--text-secondary);">Lade Versionen...</p>
                         </div>
+                        <div style="margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border-color); display: flex; flex-direction: column; gap: 0.75rem; font-size: 0.9em;">
+                            <a href="https://github.com/TauNeutrino/kantine-overview/issues" target="_blank" rel="noopener noreferrer" style="color: var(--primary-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem;" title="Melde einen Fehler auf GitHub">
+                                <span class="material-icons-round" style="font-size: 1.2em;">bug_report</span> Fehler melden
+                            </a>
+                            <a href="https://github.com/TauNeutrino/kantine-overview/discussions/categories/ideas" target="_blank" rel="noopener noreferrer" style="color: var(--primary-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem;" title="Schlage ein neues Feature auf GitHub vor">
+                                <span class="material-icons-round" style="font-size: 1.2em;">lightbulb</span> Feature vorschlagen
+                            </a>
+                            <button id="btn-clear-cache" style="background: none; border: none; padding: 0; color: var(--error-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem; cursor: pointer; text-align: left; font-size: inherit; font-family: inherit;" title="Löscht alle lokalen Daten & erzwingt einen Neuladen">
+                                <span class="material-icons-round" style="font-size: 1.2em;">delete_forever</span> Lokalen Cache leeren
+                            </button>
+                        </div>
                     </div>
                 </div>
             </div>
@@ -2193,6 +2241,18 @@ body {
         const historyModal = document.getElementById('history-modal');
         const btnHistoryClose = document.getElementById('btn-history-close');
 
+        if (btnHighlights) {
+            btnHighlights.addEventListener('click', () => {
+                highlightsModal.classList.remove('hidden');
+            });
+        }
+
+        if (btnHighlightsClose) {
+            btnHighlightsClose.addEventListener('click', () => {
+                highlightsModal.classList.add('hidden');
+            });
+        }
+
         btnHistory.addEventListener('click', () => {
             if (!authToken) {
                 loginModal.classList.remove('hidden');
@@ -2230,6 +2290,21 @@ body {
             });
         }
 
+        const btnClearCache = document.getElementById('btn-clear-cache');
+        if (btnClearCache) {
+            btnClearCache.addEventListener('click', () => {
+                if (confirm('Möchtest du wirklich alle lokalen Daten (inkl. Login-Session, Cache und Einstellungen) löschen? Die Seite wird danach neu geladen.')) {
+                    // Only clear our own keys so we don't destroy the host app's (Bessa's) session
+                    Object.keys(localStorage).forEach(key => {
+                        if (key.startsWith('kantine_')) {
+                            localStorage.removeItem(key);
+                        }
+                    });
+                    window.location.reload();
+                }
+            });
+        }
+
         window.addEventListener('click', (e) => {
             if (e.target === versionModal) versionModal.classList.add('hidden');
         });
@@ -2280,6 +2355,7 @@ body {
         });
 
         btnNextWeek.addEventListener('click', () => {
+            btnNextWeek.classList.remove('new-week-available');
             if (displayMode !== 'next-week') {
                 displayMode = 'next-week';
                 btnNextWeek.classList.add('active');
@@ -2337,8 +2413,8 @@ body {
                 if (response.ok) {
                     authToken = data.key;
                     currentUser = employeeId;
-                    sessionStorage.setItem('kantine_authToken', data.key);
-                    sessionStorage.setItem('kantine_currentUser', employeeId);
+                    localStorage.setItem('kantine_authToken', data.key);
+                    localStorage.setItem('kantine_currentUser', employeeId);
 
                     // Fetch user name
                     try {
@@ -2347,8 +2423,8 @@ body {
                         });
                         if (userResp.ok) {
                             const userData = await userResp.json();
-                            if (userData.first_name) sessionStorage.setItem('kantine_firstName', userData.first_name);
-                            if (userData.last_name) sessionStorage.setItem('kantine_lastName', userData.last_name);
+                            if (userData.first_name) localStorage.setItem('kantine_firstName', userData.first_name);
+                            if (userData.last_name) localStorage.setItem('kantine_lastName', userData.last_name);
                         }
                     } catch (err) {
                         console.error('Failed to fetch user info:', err);
@@ -2378,10 +2454,10 @@ body {
 
         // Logout
         btnLogout.addEventListener('click', () => {
-            sessionStorage.removeItem('kantine_authToken');
-            sessionStorage.removeItem('kantine_currentUser');
-            sessionStorage.removeItem('kantine_firstName');
-            sessionStorage.removeItem('kantine_lastName');
+            localStorage.removeItem('kantine_authToken');
+            localStorage.removeItem('kantine_currentUser');
+            localStorage.removeItem('kantine_firstName');
+            localStorage.removeItem('kantine_lastName');
             authToken = null;
             currentUser = null;
             orderMap = new Map();
@@ -2402,13 +2478,13 @@ body {
                     if (parsed.auth && parsed.auth.token) {
                         console.log('Found existing Bessa session!');
                         authToken = parsed.auth.token;
-                        sessionStorage.setItem('kantine_authToken', authToken);
+                        localStorage.setItem('kantine_authToken', authToken);
 
                         if (parsed.auth.user) {
                             currentUser = parsed.auth.user.id || 'unknown';
-                            sessionStorage.setItem('kantine_currentUser', currentUser);
-                            if (parsed.auth.user.firstName) sessionStorage.setItem('kantine_firstName', parsed.auth.user.firstName);
-                            if (parsed.auth.user.lastName) sessionStorage.setItem('kantine_lastName', parsed.auth.user.lastName);
+                            localStorage.setItem('kantine_currentUser', currentUser);
+                            if (parsed.auth.user.firstName) localStorage.setItem('kantine_firstName', parsed.auth.user.firstName);
+                            if (parsed.auth.user.lastName) localStorage.setItem('kantine_lastName', parsed.auth.user.lastName);
                         }
                     }
                 }
@@ -2417,9 +2493,9 @@ body {
             }
         }
 
-        authToken = sessionStorage.getItem('kantine_authToken');
-        currentUser = sessionStorage.getItem('kantine_currentUser');
-        const firstName = sessionStorage.getItem('kantine_firstName');
+        authToken = localStorage.getItem('kantine_authToken');
+        currentUser = localStorage.getItem('kantine_currentUser');
+        const firstName = localStorage.getItem('kantine_firstName');
         const btnLoginOpen = document.getElementById('btn-login-open');
         const userInfo = document.getElementById('user-info');
         const userIdDisplay = document.getElementById('user-id-display');
@@ -2469,6 +2545,7 @@ body {
                 }
                 console.log(`Fetched ${results.length} orders, mapped active ones.`);
                 renderVisibleWeeks();
+                updateNextWeekBadge();
             }
         } catch (error) {
             console.error('Error fetching orders:', error);
@@ -2484,24 +2561,49 @@ body {
         const progressFill = document.getElementById('history-progress-fill');
         const progressText = document.getElementById('history-progress-text');
 
+        // Check local storage cache (we still use memory cache if available)
+        let localCache = [];
         if (fullOrderHistoryCache) {
-            renderHistory(fullOrderHistoryCache);
-            return;
+            localCache = fullOrderHistoryCache;
+        } else {
+            const ls = localStorage.getItem('kantine_history_cache');
+            if (ls) {
+                try {
+                    localCache = JSON.parse(ls);
+                    fullOrderHistoryCache = localCache;
+                } catch (e) {
+                    console.warn('History cache parse error', e);
+                }
+            }
+        }
+
+        // Show cached version immediately if we have one
+        if (localCache.length > 0) {
+            renderHistory(localCache);
         }
 
         if (!authToken) return;
 
-        historyContent.innerHTML = '';
-        historyLoading.classList.remove('hidden');
-        progressFill.style.width = '0%';
-        progressText.textContent = 'Lade Bestellhistorie...';
+        // Start background delta sync
+        if (localCache.length === 0) {
+            historyContent.innerHTML = '';
+            historyLoading.classList.remove('hidden');
+        }
 
-        let nextUrl = `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=50`;
-        let allOrders = [];
+        progressFill.style.width = '0%';
+        progressText.textContent = localCache.length > 0 ? 'Suche nach neuen Bestellungen...' : 'Lade Bestellhistorie...';
+        if (localCache.length > 0) historyLoading.classList.remove('hidden');
+
+        let nextUrl = localCache.length > 0
+            ? `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=5`
+            : `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=50`;
+        let fetchedOrders = [];
         let totalCount = 0;
+        let requiresFullFetch = localCache.length === 0;
+        let deltaComplete = false;
 
         try {
-            while (nextUrl) {
+            while (nextUrl && !deltaComplete) {
                 const response = await fetch(nextUrl, { headers: apiHeaders(authToken) });
                 if (!response.ok) throw new Error(`Fetch failed: ${response.status}`);
 
@@ -2511,26 +2613,75 @@ body {
                     totalCount = data.count;
                 }
 
-                allOrders = allOrders.concat(data.results || []);
+                const results = data.results || [];
 
-                // Update progress
-                if (totalCount > 0) {
-                    const pct = Math.round((allOrders.length / totalCount) * 100);
-                    progressFill.style.width = `${pct}%`;
-                    progressText.textContent = `Lade Bestellung ${allOrders.length} von ${totalCount}...`;
-                } else {
-                    progressText.textContent = `Lade Bestellung ${allOrders.length}...`;
+                for (const order of results) {
+                    // Check if we hit an order that is already in our cache AND has the exact same state/update time
+                    // Bessa returns 'updated' timestamp, we can use it to determine if anything changed
+                    const existingOrderIndex = localCache.findIndex(cached => cached.id === order.id);
+
+                    if (!requiresFullFetch && existingOrderIndex !== -1) {
+                        const existingOrder = localCache[existingOrderIndex];
+                        // If order exists and wasn't updated since our cache, we've reached the point 
+                        // where everything older is already correctly cached.
+                        // order.updated is an ISO string like "2025-02-18T10:30:15.123456Z"
+                        if (existingOrder.updated === order.updated && existingOrder.order_state === order.order_state) {
+                            deltaComplete = true;
+                            break;
+                        }
+                    }
+                    fetchedOrders.push(order);
                 }
 
-                nextUrl = data.next;
+                // Update progress
+                if (!deltaComplete && requiresFullFetch) {
+                    if (totalCount > 0) {
+                        const pct = Math.round((fetchedOrders.length / totalCount) * 100);
+                        progressFill.style.width = `${pct}%`;
+                        progressText.textContent = `Lade Bestellung ${fetchedOrders.length} von ${totalCount}...`;
+                    } else {
+                        progressText.textContent = `Lade Bestellung ${fetchedOrders.length}...`;
+                    }
+                } else if (!deltaComplete) {
+                    progressText.textContent = `${fetchedOrders.length} neue/geänderte Bestellungen gefunden...`;
+                }
+
+                nextUrl = deltaComplete ? null : data.next;
             }
 
-            fullOrderHistoryCache = allOrders;
-            renderHistory(fullOrderHistoryCache);
+            // Merge fetched orders with cache
+            if (fetchedOrders.length > 0) {
+                // We have new/updated orders. We need to merge them into the cache.
+                // 1. Create a map of the existing cache for quick ID lookup
+                const cacheMap = new Map(localCache.map(o => [o.id, o]));
+
+                // 2. Update/Insert the newly fetched orders
+                for (const order of fetchedOrders) {
+                    cacheMap.set(order.id, order); // Overwrites existing, or adds new
+                }
+
+                // 3. Convert back to array and sort by created date (descending)
+                const mergedOrders = Array.from(cacheMap.values());
+                mergedOrders.sort((a, b) => new Date(b.created) - new Date(a.created));
+
+                fullOrderHistoryCache = mergedOrders;
+                try {
+                    localStorage.setItem('kantine_history_cache', JSON.stringify(mergedOrders));
+                } catch (e) {
+                    console.warn('History cache write error', e);
+                }
+
+                // Render the updated history
+                renderHistory(fullOrderHistoryCache);
+            }
 
         } catch (error) {
-            console.error('Error fetching full history:', error);
-            historyContent.innerHTML = `<p style="color:var(--error-color);text-align:center;">Fehler beim Laden der Historie.</p>`;
+            console.error('Error in history sync:', error);
+            if (localCache.length === 0) {
+                historyContent.innerHTML = `<p style="color:var(--error-color);text-align:center;">Fehler beim Laden der Historie.</p>`;
+            } else {
+                showToast('Hintergrund-Synchronisation fehlgeschlagen', 'error');
+            }
         } finally {
             historyLoading.classList.add('hidden');
         }
@@ -2732,6 +2883,7 @@ body {
 
             if (response.ok || response.status === 201) {
                 showToast(`Bestellt: ${name}`, 'success');
+                fullOrderHistoryCache = null; // Clear memory cache so next history open triggers delta sync
                 await fetchOrders();
             } else {
                 const data = await response.json();
@@ -2761,6 +2913,7 @@ body {
 
             if (response.ok) {
                 showToast(`Storniert: ${name}`, 'success');
+                fullOrderHistoryCache = null; // Clear memory cache so next history open triggers delta sync
                 await fetchOrders();
             } else {
                 const data = await response.json();
@@ -2777,31 +2930,172 @@ body {
         localStorage.setItem('kantine_flags', JSON.stringify([...userFlags]));
     }
 
+    async function refreshFlaggedItems() {
+        if (userFlags.size === 0) return;
+        const token = authToken || GUEST_TOKEN;
+        const datesToFetch = new Set();
+
+        for (const flagId of userFlags) {
+            const [dateStr] = flagId.split('_');
+            datesToFetch.add(dateStr);
+        }
+
+        let updated = false;
+        for (const dateStr of datesToFetch) {
+            try {
+                const resp = await fetch(`${API_BASE}/venues/${VENUE_ID}/menu/${MENU_ID}/${dateStr}/`, {
+                    headers: apiHeaders(token)
+                });
+                if (!resp.ok) continue;
+                const data = await resp.json();
+                const menuGroups = data.results || [];
+                let dayItems = [];
+                for (const group of menuGroups) {
+                    if (group.items && Array.isArray(group.items)) {
+                        dayItems = dayItems.concat(group.items);
+                    }
+                }
+
+                // Update allWeeks in memory
+                for (let week of allWeeks) {
+                    if (!week.days) continue;
+                    let dayObj = week.days.find(d => d.date === dateStr);
+                    if (dayObj) {
+                        dayObj.items = dayItems.map(item => {
+                            const isUnlimited = item.amount_tracking === false;
+                            const hasStock = parseInt(item.available_amount) > 0;
+                            return {
+                                id: `${dateStr}_${item.id}`,
+                                articleId: item.id,
+                                name: item.name || 'Unknown',
+                                description: item.description || '',
+                                price: parseFloat(item.price) || 0,
+                                available: isUnlimited || hasStock,
+                                availableAmount: parseInt(item.available_amount) || 0,
+                                amountTracking: item.amount_tracking !== false
+                            };
+                        });
+                        updated = true;
+                    }
+                }
+            } catch (e) {
+                console.error('Error refreshing flag date', dateStr, e);
+            }
+        }
+
+        if (updated) {
+            saveMenuCache();
+            updateLastUpdatedTime(new Date().toISOString());
+            updateAlarmBell();
+            renderVisibleWeeks();
+        }
+    }
+
+    function updateAlarmBell() {
+        const bellBtn = document.getElementById('alarm-bell');
+        const bellIcon = document.getElementById('alarm-bell-icon');
+        if (!bellBtn || !bellIcon) return;
+
+        if (userFlags.size === 0) {
+            bellBtn.classList.add('hidden');
+            bellBtn.style.display = 'none';
+            bellIcon.style.color = 'var(--text-secondary)';
+            bellIcon.style.textShadow = 'none';
+            return;
+        }
+
+        bellBtn.classList.remove('hidden');
+        bellBtn.style.display = 'inline-flex';
+
+        // Check if any flagged item is available
+        let anyAvailable = false;
+        for (const wk of allWeeks) {
+            if (!wk.days) continue;
+            for (const d of wk.days) {
+                if (!d.items) continue;
+                for (const item of d.items) {
+                    if (item.available && userFlags.has(item.id)) {
+                        anyAvailable = true;
+                        break;
+                    }
+                }
+                if (anyAvailable) break;
+            }
+            if (anyAvailable) break;
+        }
+
+        let lastUpdatedStr = localStorage.getItem('kantine_last_updated');
+        let timeStr = 'gerade eben'; // Fallback instead of Unbekannt
+        if (!lastUpdatedStr) {
+            lastUpdatedStr = new Date().toISOString();
+            localStorage.setItem('kantine_last_updated', lastUpdatedStr);
+        }
+
+        const lastUpdated = new Date(lastUpdatedStr);
+        const diffMs = Date.now() - lastUpdated.getTime();
+        const diffMins = Math.floor(diffMs / 60000);
+        if (diffMins < 1) timeStr = 'gerade eben';
+        else if (diffMins < 60) timeStr = `vor ${diffMins} Min.`;
+        else timeStr = `vor ${Math.floor(diffMins / 60)} Std.`;
+
+        bellBtn.title = `Zuletzt geprüft: ${timeStr}`;
+
+        if (anyAvailable) {
+            bellIcon.style.color = '#10b981'; // green / success
+            bellIcon.style.textShadow = '0 0 10px rgba(16, 185, 129, 0.4)';
+        } else {
+            bellIcon.style.color = '#f59e0b'; // yellow / warning
+            bellIcon.style.textShadow = '0 0 10px rgba(245, 158, 11, 0.4)';
+        }
+    }
+
     function toggleFlag(date, articleId, name, cutoff) {
         const id = `${date}_${articleId}`;
+        let flagAdded = false;
         if (userFlags.has(id)) {
             userFlags.delete(id);
             showToast(`Flag entfernt für ${name}`, 'success');
         } else {
             userFlags.add(id);
+            flagAdded = true;
             showToast(`Benachrichtigung aktiviert für ${name}`, 'success');
             if (Notification.permission === 'default') {
                 Notification.requestPermission();
             }
         }
         saveFlags();
+        updateAlarmBell();
         renderVisibleWeeks();
+
+        if (flagAdded) {
+            refreshFlaggedItems();
+        }
     }
 
     // FR-019: Auto-remove flags whose cutoff has passed
     function cleanupExpiredFlags() {
         const now = new Date();
+        const todayStr = now.toISOString().split('T')[0]; // Format: YYYY-MM-DD
         let changed = false;
+
         for (const flagId of [...userFlags]) {
-            const [date] = flagId.split('_');
-            const cutoff = new Date(date);
-            cutoff.setHours(10, 0, 0, 0); // Standard cutoff 10:00
-            if (now >= cutoff) {
+            const [dateStr] = flagId.split('_'); // Format usually is YYYY-MM-DD
+
+            // If the flag's date string is entirely in the past (before today)
+            // or if it's today but past the 10:00 cutoff time
+            let isExpired = false;
+
+            if (dateStr < todayStr) {
+                isExpired = true;
+            } else if (dateStr === todayStr) {
+                const cutoff = new Date(dateStr);
+                cutoff.setHours(10, 0, 0, 0); // Standard cutoff 10:00
+                if (now >= cutoff) {
+                    isExpired = true;
+                }
+            }
+
+            if (isExpired) {
                 userFlags.delete(flagId);
                 changed = true;
             }
@@ -2946,6 +3240,7 @@ body {
                 console.log(`[Cache] Parsed ${allWeeks.length} weeks:`, allWeeks.map(w => `KW${w.weekNumber}/${w.year} (${(w.days || []).length} days)`));
                 renderVisibleWeeks();
                 updateNextWeekBadge();
+                updateAlarmBell();
                 if (cachedTs) updateLastUpdatedTime(cachedTs);
                 console.log('Loaded menu from cache');
                 return true;
@@ -3158,6 +3453,7 @@ body {
             updateAuthUI(); // This will trigger fetchOrders if logged in
             renderVisibleWeeks();
             updateNextWeekBadge();
+            updateAlarmBell();
 
             progressMessage.textContent = 'Fertig!';
             setTimeout(() => progressModal.classList.add('hidden'), 500);
@@ -3315,6 +3611,19 @@ body {
                 badge.classList.add('has-highlights');
             }
 
+            // FR-092: Glow Next Week button while data exists but no orders placed
+            if (daysWithOrders === 0) {
+                btnNextWeek.classList.add('new-week-available');
+                // One-time toast notification when new data first arrives
+                const storageKey = `kantine_notified_nextweek_${nextYear}_${nextWeek}`;
+                if (!localStorage.getItem(storageKey)) {
+                    localStorage.setItem(storageKey, 'true');
+                    showToast('Neue Menüdaten für nächste Woche verfügbar!', 'info');
+                }
+            } else {
+                btnNextWeek.classList.remove('new-week-available');
+            }
+
         } else if (badge) {
             badge.remove();
         }
@@ -3721,7 +4030,7 @@ body {
 
     // Periodic update check (runs on init + every hour)
     async function checkForUpdates() {
-        const currentVersion = 'v1.4.2';
+        const currentVersion = 'v1.5.0';
         const devMode = localStorage.getItem('kantine_dev_mode') === 'true';
 
         try {
@@ -3762,7 +4071,7 @@ body {
         const modal = document.getElementById('version-modal');
         const container = document.getElementById('version-list-container');
         const devToggle = document.getElementById('dev-mode-toggle');
-        const currentVersion = 'v1.4.2';
+        const currentVersion = 'v1.5.0';
 
         if (!modal) return;
         modal.classList.remove('hidden');
@@ -3780,19 +4089,8 @@ body {
             const dm = devToggle.checked;
             container.innerHTML = '<p style="color:var(--text-secondary);">Lade Versionen...</p>';
 
-            try {
-                let versions;
-                const cached = JSON.parse(localStorage.getItem('kantine_version_cache') || 'null');
-                if (!forceRefresh && cached && cached.devMode === dm && (Date.now() - cached.timestamp < 3600000)) {
-                    versions = cached.versions;
-                } else {
-                    versions = await fetchVersions(dm);
-                    localStorage.setItem('kantine_version_cache', JSON.stringify({
-                        timestamp: Date.now(), devMode: dm, versions
-                    }));
-                }
-
-                if (!versions.length) {
+            function renderVersionsList(versions) {
+                if (!versions || !versions.length) {
                     container.innerHTML = '<p style="color:var(--text-secondary);">Keine Versionen gefunden.</p>';
                     return;
                 }
@@ -3824,6 +4122,34 @@ body {
                     `;
                     list.appendChild(li);
                 });
+            }
+
+            try {
+                // 1. Show cached versions immediately if available
+                const cachedRaw = localStorage.getItem('kantine_version_cache');
+                let cached = null;
+                if (cachedRaw) {
+                    try { cached = JSON.parse(cachedRaw); } catch (e) { }
+                }
+
+                if (cached && cached.devMode === dm && cached.versions) {
+                    renderVersionsList(cached.versions);
+                }
+
+                // 2. Fetch fresh versions in background (or foreground if no cache)
+                const liveVersions = await fetchVersions(dm);
+
+                // Compare with cache to see if we need to re-render
+                const liveVersionsStr = JSON.stringify(liveVersions);
+                const cachedVersionsStr = cached ? JSON.stringify(cached.versions) : '';
+
+                if (liveVersionsStr !== cachedVersionsStr) {
+                    localStorage.setItem('kantine_version_cache', JSON.stringify({
+                        timestamp: Date.now(), devMode: dm, versions: liveVersions
+                    }));
+                    renderVersionsList(liveVersions);
+                }
+
             } catch (e) {
                 container.innerHTML = `<p style="color:#e94560;">Fehler: ${e.message}</p>`;
             }
@@ -3842,6 +4168,12 @@ body {
 
     // === Order Countdown ===
     function updateCountdown() {
+        // Only show order alarms for logged-in users
+        if (!authToken || !currentUser) {
+            removeCountdown();
+            return;
+        }
+
         const now = new Date();
         const currentDay = now.getDay();
         // Skip weekends (0=Sun, 6=Sat)
@@ -3906,7 +4238,7 @@ body {
 
             // Notification logic (One time)
             const notifiedKey = `kantine_notified_${todayStr}`;
-            if (!sessionStorage.getItem(notifiedKey)) {
+            if (!localStorage.getItem(notifiedKey)) {
                 if (Notification.permission === 'granted') {
                     new Notification('Kantine: Bestellschluss naht!', {
                         body: 'Du hast heute noch nichts bestellt. Nur noch 1 Stunde!',
@@ -3915,7 +4247,7 @@ body {
                 } else if (Notification.permission === 'default') {
                     Notification.requestPermission();
                 }
-                sessionStorage.setItem(notifiedKey, 'true');
+                localStorage.setItem(notifiedKey, 'true');
             }
         } else {
             countdownEl.classList.remove('urgent');

favicon.svg

@@ -0,0 +1,29 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64">
+  <!-- Fork (left, with gap to triangle) -->
+  <g transform="translate(2, 10)">
+    <!-- Tines -->
+    <rect x="1" y="0" width="1.8" height="16" rx="0.9" fill="#333"/>
+    <rect x="4.6" y="0" width="1.8" height="16" rx="0.9" fill="#333"/>
+    <rect x="8.2" y="0" width="1.8" height="16" rx="0.9" fill="#333"/>
+    <!-- Connector -->
+    <rect x="1" y="14" width="9" height="3.5" rx="1.5" fill="#333"/>
+    <!-- Handle -->
+    <rect x="3.5" y="16.5" width="4" height="24" rx="2" fill="#333"/>
+  </g>
+
+  <!-- Triangle (center, equilateral aspect ratio ~1:0.866) -->
+  <!-- Equilateral: base=28, height=24.25 => keeps proper ratio -->
+  <polygon points="32,8 47,48 17,48" fill="none" stroke="#333" stroke-width="4" stroke-linejoin="round"/>
+
+  <!-- Knife (right, with gap to triangle) -->
+  <g transform="translate(50, 10)">
+    <!-- Blade (slight curve) -->
+    <path d="M3,0 C3,0 3,0 3,0 L3,17 L10,14 C10,6 7,0 3,0 Z" fill="#333"/>
+    <!-- Spine -->
+    <rect x="1.5" y="0" width="2" height="18" rx="1" fill="#333"/>
+    <!-- Bolster -->
+    <rect x="1.5" y="16.5" width="8.5" height="3.5" rx="1.2" fill="#333"/>
+    <!-- Handle -->
+    <rect x="3.5" y="19" width="4" height="22" rx="2" fill="#333"/>
+  </g>
+</svg>

kantine.js

@@ -29,8 +29,8 @@
     let currentWeekNumber = getISOWeek(new Date());
     let currentYear = new Date().getFullYear();
     let displayMode = 'this-week';
-    let authToken = sessionStorage.getItem('kantine_authToken');
-    let currentUser = sessionStorage.getItem('kantine_currentUser');
+    let authToken = localStorage.getItem('kantine_authToken');
+    let currentUser = localStorage.getItem('kantine_currentUser');
     let orderMap = new Map();
     let userFlags = new Set(JSON.parse(localStorage.getItem('kantine_flags') || '[]'));
     let pollIntervalId = null;
@@ -50,6 +50,16 @@
         // Replace entire page content
         document.title = 'Kantine Weekly Menu';
 
+        // Inject custom favicon (triangle + fork & knife PNG)
+        if (document.querySelectorAll) {
+            document.querySelectorAll('link[rel*="icon"]').forEach(el => el.remove());
+        }
+        const favicon = document.createElement('link');
+        favicon.rel = 'icon';
+        favicon.type = 'image/png';
+        favicon.href = '{{FAVICON_DATA_URI}}';
+        document.head.appendChild(favicon);
+
         // Inject Google Fonts if not already present
         if (!document.querySelector('link[href*="fonts.googleapis.com/css2?family=Inter"]')) {
             const fontLink = document.createElement('link');
@@ -74,6 +84,13 @@
                             <h1>Kantinen Übersicht <small class="version-tag" style="font-size: 0.6em; opacity: 0.7; font-weight: 400; cursor: pointer;" title="Klick für Versionsmenü">{{VERSION}}</small></h1>
                             <div id="last-updated-subtitle" class="subtitle"></div>
                         </div>
+                        <div class="nav-group" style="margin-left: 1rem;">
+                            <button id="btn-this-week" class="nav-btn active">Diese Woche</button>
+                            <button id="btn-next-week" class="nav-btn">Nächste Woche</button>
+                        </div>
+                        <button id="alarm-bell" class="icon-btn hidden" aria-label="Benachrichtigungen" title="Keine beobachteten Menüs" style="margin-left: -0.5rem;">
+                            <span class="material-icons-round" id="alarm-bell-icon" style="color:var(--text-secondary); transition: color 0.3s;">notifications</span>
+                        </button>
                     </div>
                     <div class="header-center-wrapper">
                         <div id="header-week-info" class="header-week-info"></div>
@@ -89,10 +106,6 @@
                         <button id="btn-highlights" class="icon-btn" aria-label="Persönliche Highlights verwalten" title="Persönliche Highlights verwalten">
                             <span class="material-icons-round">label</span>
                         </button>
-                        <div class="nav-group">
-                            <button id="btn-this-week" class="nav-btn active">Diese Woche</button>
-                            <button id="btn-next-week" class="nav-btn">Nächste Woche</button>
-                        </div>
                         <button id="theme-toggle" class="icon-btn" aria-label="Toggle Theme">
                             <span class="material-icons-round theme-icon">light_mode</span>
                         </button>
@@ -218,9 +231,20 @@
                                 <span>Dev-Mode (alle Tags anzeigen)</span>
                             </label>
                         </div>
-                        <div id="version-list-container" style="margin-top:1rem;">
+                        <div id="version-list-container" style="margin-top:1rem; max-height: 250px; overflow-y: auto;">
                             <p style="color:var(--text-secondary);">Lade Versionen...</p>
                         </div>
+                        <div style="margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border-color); display: flex; flex-direction: column; gap: 0.75rem; font-size: 0.9em;">
+                            <a href="https://github.com/TauNeutrino/kantine-overview/issues" target="_blank" rel="noopener noreferrer" style="color: var(--primary-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem;" title="Melde einen Fehler auf GitHub">
+                                <span class="material-icons-round" style="font-size: 1.2em;">bug_report</span> Fehler melden
+                            </a>
+                            <a href="https://github.com/TauNeutrino/kantine-overview/discussions/categories/ideas" target="_blank" rel="noopener noreferrer" style="color: var(--primary-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem;" title="Schlage ein neues Feature auf GitHub vor">
+                                <span class="material-icons-round" style="font-size: 1.2em;">lightbulb</span> Feature vorschlagen
+                            </a>
+                            <button id="btn-clear-cache" style="background: none; border: none; padding: 0; color: var(--error-color); text-decoration: none; display: flex; align-items: center; gap: 0.5rem; cursor: pointer; text-align: left; font-size: inherit; font-family: inherit;" title="Löscht alle lokalen Daten & erzwingt einen Neuladen">
+                                <span class="material-icons-round" style="font-size: 1.2em;">delete_forever</span> Lokalen Cache leeren
+                            </button>
+                        </div>
                     </div>
                 </div>
             </div>
@@ -267,6 +291,18 @@
         const historyModal = document.getElementById('history-modal');
         const btnHistoryClose = document.getElementById('btn-history-close');
 
+        if (btnHighlights) {
+            btnHighlights.addEventListener('click', () => {
+                highlightsModal.classList.remove('hidden');
+            });
+        }
+
+        if (btnHighlightsClose) {
+            btnHighlightsClose.addEventListener('click', () => {
+                highlightsModal.classList.add('hidden');
+            });
+        }
+
         btnHistory.addEventListener('click', () => {
             if (!authToken) {
                 loginModal.classList.remove('hidden');
@@ -304,6 +340,21 @@
             });
         }
 
+        const btnClearCache = document.getElementById('btn-clear-cache');
+        if (btnClearCache) {
+            btnClearCache.addEventListener('click', () => {
+                if (confirm('Möchtest du wirklich alle lokalen Daten (inkl. Login-Session, Cache und Einstellungen) löschen? Die Seite wird danach neu geladen.')) {
+                    // Only clear our own keys so we don't destroy the host app's (Bessa's) session
+                    Object.keys(localStorage).forEach(key => {
+                        if (key.startsWith('kantine_')) {
+                            localStorage.removeItem(key);
+                        }
+                    });
+                    window.location.reload();
+                }
+            });
+        }
+
         window.addEventListener('click', (e) => {
             if (e.target === versionModal) versionModal.classList.add('hidden');
         });
@@ -354,6 +405,7 @@
         });
 
         btnNextWeek.addEventListener('click', () => {
+            btnNextWeek.classList.remove('new-week-available');
             if (displayMode !== 'next-week') {
                 displayMode = 'next-week';
                 btnNextWeek.classList.add('active');
@@ -411,8 +463,8 @@
                 if (response.ok) {
                     authToken = data.key;
                     currentUser = employeeId;
-                    sessionStorage.setItem('kantine_authToken', data.key);
-                    sessionStorage.setItem('kantine_currentUser', employeeId);
+                    localStorage.setItem('kantine_authToken', data.key);
+                    localStorage.setItem('kantine_currentUser', employeeId);
 
                     // Fetch user name
                     try {
@@ -421,8 +473,8 @@
                         });
                         if (userResp.ok) {
                             const userData = await userResp.json();
-                            if (userData.first_name) sessionStorage.setItem('kantine_firstName', userData.first_name);
-                            if (userData.last_name) sessionStorage.setItem('kantine_lastName', userData.last_name);
+                            if (userData.first_name) localStorage.setItem('kantine_firstName', userData.first_name);
+                            if (userData.last_name) localStorage.setItem('kantine_lastName', userData.last_name);
                         }
                     } catch (err) {
                         console.error('Failed to fetch user info:', err);
@@ -452,10 +504,10 @@
 
         // Logout
         btnLogout.addEventListener('click', () => {
-            sessionStorage.removeItem('kantine_authToken');
-            sessionStorage.removeItem('kantine_currentUser');
-            sessionStorage.removeItem('kantine_firstName');
-            sessionStorage.removeItem('kantine_lastName');
+            localStorage.removeItem('kantine_authToken');
+            localStorage.removeItem('kantine_currentUser');
+            localStorage.removeItem('kantine_firstName');
+            localStorage.removeItem('kantine_lastName');
             authToken = null;
             currentUser = null;
             orderMap = new Map();
@@ -476,13 +528,13 @@
                     if (parsed.auth && parsed.auth.token) {
                         console.log('Found existing Bessa session!');
                         authToken = parsed.auth.token;
-                        sessionStorage.setItem('kantine_authToken', authToken);
+                        localStorage.setItem('kantine_authToken', authToken);
 
                         if (parsed.auth.user) {
                             currentUser = parsed.auth.user.id || 'unknown';
-                            sessionStorage.setItem('kantine_currentUser', currentUser);
-                            if (parsed.auth.user.firstName) sessionStorage.setItem('kantine_firstName', parsed.auth.user.firstName);
-                            if (parsed.auth.user.lastName) sessionStorage.setItem('kantine_lastName', parsed.auth.user.lastName);
+                            localStorage.setItem('kantine_currentUser', currentUser);
+                            if (parsed.auth.user.firstName) localStorage.setItem('kantine_firstName', parsed.auth.user.firstName);
+                            if (parsed.auth.user.lastName) localStorage.setItem('kantine_lastName', parsed.auth.user.lastName);
                         }
                     }
                 }
@@ -491,9 +543,9 @@
             }
         }
 
-        authToken = sessionStorage.getItem('kantine_authToken');
-        currentUser = sessionStorage.getItem('kantine_currentUser');
-        const firstName = sessionStorage.getItem('kantine_firstName');
+        authToken = localStorage.getItem('kantine_authToken');
+        currentUser = localStorage.getItem('kantine_currentUser');
+        const firstName = localStorage.getItem('kantine_firstName');
         const btnLoginOpen = document.getElementById('btn-login-open');
         const userInfo = document.getElementById('user-info');
         const userIdDisplay = document.getElementById('user-id-display');
@@ -543,6 +595,7 @@
                 }
                 console.log(`Fetched ${results.length} orders, mapped active ones.`);
                 renderVisibleWeeks();
+                updateNextWeekBadge();
             }
         } catch (error) {
             console.error('Error fetching orders:', error);
@@ -558,24 +611,49 @@
         const progressFill = document.getElementById('history-progress-fill');
         const progressText = document.getElementById('history-progress-text');
 
+        // Check local storage cache (we still use memory cache if available)
+        let localCache = [];
         if (fullOrderHistoryCache) {
-            renderHistory(fullOrderHistoryCache);
-            return;
+            localCache = fullOrderHistoryCache;
+        } else {
+            const ls = localStorage.getItem('kantine_history_cache');
+            if (ls) {
+                try {
+                    localCache = JSON.parse(ls);
+                    fullOrderHistoryCache = localCache;
+                } catch (e) {
+                    console.warn('History cache parse error', e);
+                }
+            }
+        }
+
+        // Show cached version immediately if we have one
+        if (localCache.length > 0) {
+            renderHistory(localCache);
         }
 
         if (!authToken) return;
 
-        historyContent.innerHTML = '';
-        historyLoading.classList.remove('hidden');
-        progressFill.style.width = '0%';
-        progressText.textContent = 'Lade Bestellhistorie...';
+        // Start background delta sync
+        if (localCache.length === 0) {
+            historyContent.innerHTML = '';
+            historyLoading.classList.remove('hidden');
+        }
 
-        let nextUrl = `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=50`;
-        let allOrders = [];
+        progressFill.style.width = '0%';
+        progressText.textContent = localCache.length > 0 ? 'Suche nach neuen Bestellungen...' : 'Lade Bestellhistorie...';
+        if (localCache.length > 0) historyLoading.classList.remove('hidden');
+
+        let nextUrl = localCache.length > 0
+            ? `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=5`
+            : `${API_BASE}/user/orders/?venue=${VENUE_ID}&ordering=-created&limit=50`;
+        let fetchedOrders = [];
         let totalCount = 0;
+        let requiresFullFetch = localCache.length === 0;
+        let deltaComplete = false;
 
         try {
-            while (nextUrl) {
+            while (nextUrl && !deltaComplete) {
                 const response = await fetch(nextUrl, { headers: apiHeaders(authToken) });
                 if (!response.ok) throw new Error(`Fetch failed: ${response.status}`);
 
@@ -585,26 +663,75 @@
                     totalCount = data.count;
                 }
 
-                allOrders = allOrders.concat(data.results || []);
+                const results = data.results || [];
 
-                // Update progress
-                if (totalCount > 0) {
-                    const pct = Math.round((allOrders.length / totalCount) * 100);
-                    progressFill.style.width = `${pct}%`;
-                    progressText.textContent = `Lade Bestellung ${allOrders.length} von ${totalCount}...`;
-                } else {
-                    progressText.textContent = `Lade Bestellung ${allOrders.length}...`;
+                for (const order of results) {
+                    // Check if we hit an order that is already in our cache AND has the exact same state/update time
+                    // Bessa returns 'updated' timestamp, we can use it to determine if anything changed
+                    const existingOrderIndex = localCache.findIndex(cached => cached.id === order.id);
+
+                    if (!requiresFullFetch && existingOrderIndex !== -1) {
+                        const existingOrder = localCache[existingOrderIndex];
+                        // If order exists and wasn't updated since our cache, we've reached the point 
+                        // where everything older is already correctly cached.
+                        // order.updated is an ISO string like "2025-02-18T10:30:15.123456Z"
+                        if (existingOrder.updated === order.updated && existingOrder.order_state === order.order_state) {
+                            deltaComplete = true;
+                            break;
+                        }
+                    }
+                    fetchedOrders.push(order);
                 }
 
-                nextUrl = data.next;
+                // Update progress
+                if (!deltaComplete && requiresFullFetch) {
+                    if (totalCount > 0) {
+                        const pct = Math.round((fetchedOrders.length / totalCount) * 100);
+                        progressFill.style.width = `${pct}%`;
+                        progressText.textContent = `Lade Bestellung ${fetchedOrders.length} von ${totalCount}...`;
+                    } else {
+                        progressText.textContent = `Lade Bestellung ${fetchedOrders.length}...`;
+                    }
+                } else if (!deltaComplete) {
+                    progressText.textContent = `${fetchedOrders.length} neue/geänderte Bestellungen gefunden...`;
+                }
+
+                nextUrl = deltaComplete ? null : data.next;
             }
 
-            fullOrderHistoryCache = allOrders;
-            renderHistory(fullOrderHistoryCache);
+            // Merge fetched orders with cache
+            if (fetchedOrders.length > 0) {
+                // We have new/updated orders. We need to merge them into the cache.
+                // 1. Create a map of the existing cache for quick ID lookup
+                const cacheMap = new Map(localCache.map(o => [o.id, o]));
+
+                // 2. Update/Insert the newly fetched orders
+                for (const order of fetchedOrders) {
+                    cacheMap.set(order.id, order); // Overwrites existing, or adds new
+                }
+
+                // 3. Convert back to array and sort by created date (descending)
+                const mergedOrders = Array.from(cacheMap.values());
+                mergedOrders.sort((a, b) => new Date(b.created) - new Date(a.created));
+
+                fullOrderHistoryCache = mergedOrders;
+                try {
+                    localStorage.setItem('kantine_history_cache', JSON.stringify(mergedOrders));
+                } catch (e) {
+                    console.warn('History cache write error', e);
+                }
+
+                // Render the updated history
+                renderHistory(fullOrderHistoryCache);
+            }
 
         } catch (error) {
-            console.error('Error fetching full history:', error);
-            historyContent.innerHTML = `<p style="color:var(--error-color);text-align:center;">Fehler beim Laden der Historie.</p>`;
+            console.error('Error in history sync:', error);
+            if (localCache.length === 0) {
+                historyContent.innerHTML = `<p style="color:var(--error-color);text-align:center;">Fehler beim Laden der Historie.</p>`;
+            } else {
+                showToast('Hintergrund-Synchronisation fehlgeschlagen', 'error');
+            }
         } finally {
             historyLoading.classList.add('hidden');
         }
@@ -806,6 +933,7 @@
 
             if (response.ok || response.status === 201) {
                 showToast(`Bestellt: ${name}`, 'success');
+                fullOrderHistoryCache = null; // Clear memory cache so next history open triggers delta sync
                 await fetchOrders();
             } else {
                 const data = await response.json();
@@ -835,6 +963,7 @@
 
             if (response.ok) {
                 showToast(`Storniert: ${name}`, 'success');
+                fullOrderHistoryCache = null; // Clear memory cache so next history open triggers delta sync
                 await fetchOrders();
             } else {
                 const data = await response.json();
@@ -851,31 +980,172 @@
         localStorage.setItem('kantine_flags', JSON.stringify([...userFlags]));
     }
 
+    async function refreshFlaggedItems() {
+        if (userFlags.size === 0) return;
+        const token = authToken || GUEST_TOKEN;
+        const datesToFetch = new Set();
+
+        for (const flagId of userFlags) {
+            const [dateStr] = flagId.split('_');
+            datesToFetch.add(dateStr);
+        }
+
+        let updated = false;
+        for (const dateStr of datesToFetch) {
+            try {
+                const resp = await fetch(`${API_BASE}/venues/${VENUE_ID}/menu/${MENU_ID}/${dateStr}/`, {
+                    headers: apiHeaders(token)
+                });
+                if (!resp.ok) continue;
+                const data = await resp.json();
+                const menuGroups = data.results || [];
+                let dayItems = [];
+                for (const group of menuGroups) {
+                    if (group.items && Array.isArray(group.items)) {
+                        dayItems = dayItems.concat(group.items);
+                    }
+                }
+
+                // Update allWeeks in memory
+                for (let week of allWeeks) {
+                    if (!week.days) continue;
+                    let dayObj = week.days.find(d => d.date === dateStr);
+                    if (dayObj) {
+                        dayObj.items = dayItems.map(item => {
+                            const isUnlimited = item.amount_tracking === false;
+                            const hasStock = parseInt(item.available_amount) > 0;
+                            return {
+                                id: `${dateStr}_${item.id}`,
+                                articleId: item.id,
+                                name: item.name || 'Unknown',
+                                description: item.description || '',
+                                price: parseFloat(item.price) || 0,
+                                available: isUnlimited || hasStock,
+                                availableAmount: parseInt(item.available_amount) || 0,
+                                amountTracking: item.amount_tracking !== false
+                            };
+                        });
+                        updated = true;
+                    }
+                }
+            } catch (e) {
+                console.error('Error refreshing flag date', dateStr, e);
+            }
+        }
+
+        if (updated) {
+            saveMenuCache();
+            updateLastUpdatedTime(new Date().toISOString());
+            updateAlarmBell();
+            renderVisibleWeeks();
+        }
+    }
+
+    function updateAlarmBell() {
+        const bellBtn = document.getElementById('alarm-bell');
+        const bellIcon = document.getElementById('alarm-bell-icon');
+        if (!bellBtn || !bellIcon) return;
+
+        if (userFlags.size === 0) {
+            bellBtn.classList.add('hidden');
+            bellBtn.style.display = 'none';
+            bellIcon.style.color = 'var(--text-secondary)';
+            bellIcon.style.textShadow = 'none';
+            return;
+        }
+
+        bellBtn.classList.remove('hidden');
+        bellBtn.style.display = 'inline-flex';
+
+        // Check if any flagged item is available
+        let anyAvailable = false;
+        for (const wk of allWeeks) {
+            if (!wk.days) continue;
+            for (const d of wk.days) {
+                if (!d.items) continue;
+                for (const item of d.items) {
+                    if (item.available && userFlags.has(item.id)) {
+                        anyAvailable = true;
+                        break;
+                    }
+                }
+                if (anyAvailable) break;
+            }
+            if (anyAvailable) break;
+        }
+
+        let lastUpdatedStr = localStorage.getItem('kantine_last_updated');
+        let timeStr = 'gerade eben'; // Fallback instead of Unbekannt
+        if (!lastUpdatedStr) {
+            lastUpdatedStr = new Date().toISOString();
+            localStorage.setItem('kantine_last_updated', lastUpdatedStr);
+        }
+
+        const lastUpdated = new Date(lastUpdatedStr);
+        const diffMs = Date.now() - lastUpdated.getTime();
+        const diffMins = Math.floor(diffMs / 60000);
+        if (diffMins < 1) timeStr = 'gerade eben';
+        else if (diffMins < 60) timeStr = `vor ${diffMins} Min.`;
+        else timeStr = `vor ${Math.floor(diffMins / 60)} Std.`;
+
+        bellBtn.title = `Zuletzt geprüft: ${timeStr}`;
+
+        if (anyAvailable) {
+            bellIcon.style.color = '#10b981'; // green / success
+            bellIcon.style.textShadow = '0 0 10px rgba(16, 185, 129, 0.4)';
+        } else {
+            bellIcon.style.color = '#f59e0b'; // yellow / warning
+            bellIcon.style.textShadow = '0 0 10px rgba(245, 158, 11, 0.4)';
+        }
+    }
+
     function toggleFlag(date, articleId, name, cutoff) {
         const id = `${date}_${articleId}`;
+        let flagAdded = false;
         if (userFlags.has(id)) {
             userFlags.delete(id);
             showToast(`Flag entfernt für ${name}`, 'success');
         } else {
             userFlags.add(id);
+            flagAdded = true;
             showToast(`Benachrichtigung aktiviert für ${name}`, 'success');
             if (Notification.permission === 'default') {
                 Notification.requestPermission();
             }
         }
         saveFlags();
+        updateAlarmBell();
         renderVisibleWeeks();
+
+        if (flagAdded) {
+            refreshFlaggedItems();
+        }
     }
 
     // FR-019: Auto-remove flags whose cutoff has passed
     function cleanupExpiredFlags() {
         const now = new Date();
+        const todayStr = now.toISOString().split('T')[0]; // Format: YYYY-MM-DD
         let changed = false;
+
         for (const flagId of [...userFlags]) {
-            const [date] = flagId.split('_');
-            const cutoff = new Date(date);
-            cutoff.setHours(10, 0, 0, 0); // Standard cutoff 10:00
-            if (now >= cutoff) {
+            const [dateStr] = flagId.split('_'); // Format usually is YYYY-MM-DD
+
+            // If the flag's date string is entirely in the past (before today)
+            // or if it's today but past the 10:00 cutoff time
+            let isExpired = false;
+
+            if (dateStr < todayStr) {
+                isExpired = true;
+            } else if (dateStr === todayStr) {
+                const cutoff = new Date(dateStr);
+                cutoff.setHours(10, 0, 0, 0); // Standard cutoff 10:00
+                if (now >= cutoff) {
+                    isExpired = true;
+                }
+            }
+
+            if (isExpired) {
                 userFlags.delete(flagId);
                 changed = true;
             }
@@ -1020,6 +1290,7 @@
                 console.log(`[Cache] Parsed ${allWeeks.length} weeks:`, allWeeks.map(w => `KW${w.weekNumber}/${w.year} (${(w.days || []).length} days)`));
                 renderVisibleWeeks();
                 updateNextWeekBadge();
+                updateAlarmBell();
                 if (cachedTs) updateLastUpdatedTime(cachedTs);
                 console.log('Loaded menu from cache');
                 return true;
@@ -1232,6 +1503,7 @@
             updateAuthUI(); // This will trigger fetchOrders if logged in
             renderVisibleWeeks();
             updateNextWeekBadge();
+            updateAlarmBell();
 
             progressMessage.textContent = 'Fertig!';
             setTimeout(() => progressModal.classList.add('hidden'), 500);
@@ -1389,6 +1661,19 @@
                 badge.classList.add('has-highlights');
             }
 
+            // FR-092: Glow Next Week button while data exists but no orders placed
+            if (daysWithOrders === 0) {
+                btnNextWeek.classList.add('new-week-available');
+                // One-time toast notification when new data first arrives
+                const storageKey = `kantine_notified_nextweek_${nextYear}_${nextWeek}`;
+                if (!localStorage.getItem(storageKey)) {
+                    localStorage.setItem(storageKey, 'true');
+                    showToast('Neue Menüdaten für nächste Woche verfügbar!', 'info');
+                }
+            } else {
+                btnNextWeek.classList.remove('new-week-available');
+            }
+
         } else if (badge) {
             badge.remove();
         }
@@ -1854,19 +2139,8 @@
             const dm = devToggle.checked;
             container.innerHTML = '<p style="color:var(--text-secondary);">Lade Versionen...</p>';
 
-            try {
-                let versions;
-                const cached = JSON.parse(localStorage.getItem('kantine_version_cache') || 'null');
-                if (!forceRefresh && cached && cached.devMode === dm && (Date.now() - cached.timestamp < 3600000)) {
-                    versions = cached.versions;
-                } else {
-                    versions = await fetchVersions(dm);
-                    localStorage.setItem('kantine_version_cache', JSON.stringify({
-                        timestamp: Date.now(), devMode: dm, versions
-                    }));
-                }
-
-                if (!versions.length) {
+            function renderVersionsList(versions) {
+                if (!versions || !versions.length) {
                     container.innerHTML = '<p style="color:var(--text-secondary);">Keine Versionen gefunden.</p>';
                     return;
                 }
@@ -1898,6 +2172,34 @@
                     `;
                     list.appendChild(li);
                 });
+            }
+
+            try {
+                // 1. Show cached versions immediately if available
+                const cachedRaw = localStorage.getItem('kantine_version_cache');
+                let cached = null;
+                if (cachedRaw) {
+                    try { cached = JSON.parse(cachedRaw); } catch (e) { }
+                }
+
+                if (cached && cached.devMode === dm && cached.versions) {
+                    renderVersionsList(cached.versions);
+                }
+
+                // 2. Fetch fresh versions in background (or foreground if no cache)
+                const liveVersions = await fetchVersions(dm);
+
+                // Compare with cache to see if we need to re-render
+                const liveVersionsStr = JSON.stringify(liveVersions);
+                const cachedVersionsStr = cached ? JSON.stringify(cached.versions) : '';
+
+                if (liveVersionsStr !== cachedVersionsStr) {
+                    localStorage.setItem('kantine_version_cache', JSON.stringify({
+                        timestamp: Date.now(), devMode: dm, versions: liveVersions
+                    }));
+                    renderVersionsList(liveVersions);
+                }
+
             } catch (e) {
                 container.innerHTML = `<p style="color:#e94560;">Fehler: ${e.message}</p>`;
             }
@@ -1916,6 +2218,12 @@
 
     // === Order Countdown ===
     function updateCountdown() {
+        // Only show order alarms for logged-in users
+        if (!authToken || !currentUser) {
+            removeCountdown();
+            return;
+        }
+
         const now = new Date();
         const currentDay = now.getDay();
         // Skip weekends (0=Sun, 6=Sat)
@@ -1980,7 +2288,7 @@
 
             // Notification logic (One time)
             const notifiedKey = `kantine_notified_${todayStr}`;
-            if (!sessionStorage.getItem(notifiedKey)) {
+            if (!localStorage.getItem(notifiedKey)) {
                 if (Notification.permission === 'granted') {
                     new Notification('Kantine: Bestellschluss naht!', {
                         body: 'Du hast heute noch nichts bestellt. Nur noch 1 Stunde!',
@@ -1989,7 +2297,7 @@
                 } else if (Notification.permission === 'default') {
                     Notification.requestPermission();
                 }
-                sessionStorage.setItem(notifiedKey, 'true');
+                localStorage.setItem(notifiedKey, 'true');
             }
         } else {
             countdownEl.classList.remove('urgent');

release.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+# release.sh - Deploys a new version of the Kantine Wrapper
+
+# Ensure we're in the script directory
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+cd "$SCRIPT_DIR"
+
+# Ensure tests have run and artifacts exist
+if [ ! -d "$SCRIPT_DIR/dist" ]; then
+    echo "❌ Error: dist folder missing. Please run build-bookmarklet.sh first"
+    exit 1
+fi
+
+# Get current version
+VERSION=$(cat "version.txt" | tr -d '\n\r ')
+
+# Validate that version is set
+if [ -z "$VERSION" ]; then
+    echo "❌ Error: Could not determine version from version.txt"
+    exit 1
+fi
+
+echo "=== Kantine Bookmarklet Releaser ($VERSION) ==="
+
+# Check for uncommitted changes (excluding dist/)
+if ! git diff-index --quiet HEAD -- ":(exclude)dist"; then
+    echo "⚠️ Warning: You have uncommitted changes in the working directory."
+    echo "Please commit your code changes before running the release script."
+    exit 1
+fi
+
+echo "=== Committing build artifacts ==="
+git add "dist/"
+git commit -m "chore: update build artifacts for $VERSION" --allow-empty
+
+echo ""
+echo "=== Tagging $VERSION ==="
+if git rev-parse "$VERSION" >/dev/null 2>&1; then
+    git tag -f "$VERSION"
+    echo "🔄 Tag $VERSION moved to current commit."
+else
+    git tag "$VERSION"
+    echo "✅ Created tag: $VERSION"
+fi
+
+echo ""
+echo "=== Pushing to remotes ==="
+# Determine remote targets: Assume 'origin' for primary, optionally 'github'
+git push origin HEAD
+git push origin --force tag "$VERSION"
+
+# If a remote named 'github' exists, push branch and tags there too
+if git remote | grep -q "^github$"; then
+    git push github HEAD
+    git push github --force tag "$VERSION"
+fi
+
+echo "🎉 Successfully released version $VERSION!"
+exit 0

style.css

@@ -186,6 +186,32 @@ body {
     color: white;
 }
 
+/* Notification state for Next Week */
+.nav-btn.new-week-available {
+    animation: goldPulse 2s infinite;
+    border-color: #f59e0b;
+    color: var(--accent-color);
+}
+
+.nav-btn.new-week-available.active {
+    color: white;
+}
+
+@keyframes goldPulse {
+    0% {
+        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7);
+    }
+
+    70% {
+        box-shadow: 0 0 0 10px rgba(245, 158, 11, 0);
+    }
+
+    100% {
+        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
+    }
+}
+
+
 /* Badge for nav buttons (day count indicator) */
 .nav-badge {
     background-color: var(--error-color);
@@ -775,7 +801,7 @@ body {
     /* No opacity/filter here - fully visible */
     background: var(--bg-card);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
-    border: 1px solid var(--accent-color);
+    border: 1px solid #8b5cf6;
     border-radius: 8px;
     padding: 1rem;
     margin: 0 -1rem 1.5rem -1rem;
@@ -784,7 +810,7 @@ body {
 }
 
 .menu-item.today-ordered {
-    border: 2px solid var(--accent-color);
+    border: 2px solid #8b5cf6;
     box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
     border-radius: 8px;
     padding: 1rem;
@@ -1595,8 +1621,6 @@ body {
 .version-list {
     list-style: none;
     padding: 0;
-    max-height: 350px;
-    overflow-y: auto;
     margin: 0;
 }
 

syntax_check.js

@@ -0,0 +1,17 @@
+const fs = require('fs');
+const jsCode = fs.readFileSync('kantine.js', 'utf8')
+    .replace('(function () {', '')
+    .replace('})();', '')
+    .replace('if (window.__KANTINE_LOADED) return;', '');
+const testCode = `
+    console.log("TEST");
+`;
+const code = jsCode + '\n' + testCode;
+try {
+    const vm = require('vm');
+    new vm.Script(code);
+} catch (e) {
+    if(e.stack) {
+       console.log("Syntax error at:", e.stack.split('\n').slice(0,3).join('\n'));
+    }
+}

test_logic.js

@@ -108,7 +108,8 @@ try {
         [/function\s+isNewer/, 'isNewer function'],
         [/function\s+openVersionMenu/, 'openVersionMenu function'],
         [/kantine_dev_mode/, 'dev-mode localStorage key'],
-        [/function\s+isCacheFresh/, 'isCacheFresh function']
+        [/function\s+isCacheFresh/, 'isCacheFresh function'],
+        [/limit=5/, 'Delta fetch limit parameter']
     ];
 
     for (const [regex, label] of checks) {

tests/test_dom.js

@@ -0,0 +1,184 @@
+const fs = require('fs');
+fs.writeFileSync('trace.log', '');
+function log(m) { fs.appendFileSync('trace.log', m + '\n'); }
+
+log("Initializing JSDOM...");
+const jsdom = require('jsdom');
+const { JSDOM } = jsdom;
+
+log("Reading html...");
+const html = `
+<!DOCTYPE html>
+<html>
+<head>
+    <style>
+        .hidden { display: none !important; }
+        .icon-btn { display: inline-flex; }
+    </style>
+</head>
+<body>
+    <button id="alarm-bell" class="icon-btn hidden">
+        <span id="alarm-bell-icon" style="color:var(--text-secondary);"></span>
+    </button>
+    
+    <!-- Mocks for Highlights Feature -->
+    <button id="btn-highlights">Highlights</button>
+    <div id="highlights-modal" class="modal hidden">
+        <button id="btn-highlights-close">Close</button>
+        <input id="tag-input" type="text" />
+        <button id="btn-add-tag">Add</button>
+        <ul id="tags-list"></ul>
+    </div>
+    
+    <!-- Mocks for Login Modal -->
+    <button id="btn-login-open">Login</button>
+    <div id="login-modal" class="modal hidden">
+        <button id="btn-login-close">Close</button>
+        <form id="login-form"></form>
+        <div id="login-error" class="hidden"></div>
+    </div>
+    
+    <!-- Mocks for History Modal -->
+    <button id="btn-history">History</button>
+    <div id="history-modal" class="modal hidden">
+        <button id="btn-history-close">Close</button>
+        <div id="history-loading" class="hidden"></div>
+        <div id="history-content"></div>
+    </div>
+
+    <!-- Mocks for Version Modal -->
+    <span class="version-tag">v1.4.17</span>
+    <div id="version-modal" class="modal hidden">
+        <button id="btn-version-close">Close</button>
+        <button id="btn-clear-cache">Clear</button>
+        <span id="version-current"></span>
+        <div id="version-list-container"></div>
+    </div>
+
+    <!-- Mocks for Theme Toggle -->
+    <button id="theme-toggle"><span class="theme-icon">light_mode</span></button>
+
+    <!-- Mocks for Navigation Tabs -->
+    <button id="btn-this-week" class="active">This Week</button>
+    <button id="btn-next-week">Next Week</button>
+    
+    <button id="btn-refresh">Refresh</button>
+    <button id="btn-logout">Logout</button>
+    <div class="order-history-header">Header</div>
+    <button id="btn-error-redirect">Error Redirect</button>
+</body>
+</html>
+`;
+
+log("Reading file jsCode...");
+const jsCode = fs.readFileSync('kantine.js', 'utf8')
+    .replace('(function () {', '')
+    .replace('})();', '')
+    .replace('if (window.__KANTINE_LOADED) return;', '')
+    .replace('window.location.reload();', 'window.__RELOAD_CALLED = true;');
+
+log("Instantiating JSDOM...");
+const dom = new JSDOM(html, { runScripts: "dangerously", url: "http://localhost/" });
+log("JSDOM dom created...");
+global.window = dom.window;
+global.document = window.document;
+global.localStorage = { getItem: () => '[]', setItem: () => { } };
+global.sessionStorage = { getItem: () => null };
+
+global.showToast = () => { };
+global.saveFlags = () => { };
+global.renderVisibleWeeks = () => { };
+// Mock missing browser features if needed
+global.Notification = { permission: 'default', requestPermission: () => { } };
+global.window.matchMedia = () => ({ matches: false, addListener: () => { }, removeListener: () => { } });
+global.fetch = () => Promise.resolve({ ok: true, json: () => Promise.resolve({ results: [] }) });
+global.window.fetch = global.fetch;
+
+log("Before eval...");
+const testCode = `
+        console.log("--- Testing Alarm Bell ---");
+        // Add flag
+        userFlags.add('2026-02-24_123'); updateAlarmBell();
+        if (document.getElementById('alarm-bell').className.includes('hidden')) throw new Error("Bell should be visible");
+
+        // Remove flag
+        userFlags.delete('2026-02-24_123'); updateAlarmBell();
+        if (!document.getElementById('alarm-bell').className.includes('hidden')) throw new Error("Bell should be hidden");
+
+        console.log("✅ Alarm Bell Test Passed");
+
+        console.log("--- Testing Highlights Modal ---");
+        // First, verify initial state
+        const hlModal = document.getElementById('highlights-modal');
+        if (!hlModal.classList.contains('hidden')) throw new Error("Highlights modal should be hidden initially");
+
+        // Click to open
+        document.getElementById('btn-highlights').click();
+        if (hlModal.classList.contains('hidden')) throw new Error("Highlights modal did not open upon clicking btn-highlights!");
+
+        // Click to close
+        document.getElementById('btn-highlights-close').click();
+        if (!hlModal.classList.contains('hidden')) throw new Error("Highlights modal did not close upon clicking btn-highlights-close!");
+
+        console.log("✅ Highlights Modal Test Passed");
+        
+        console.log("--- Testing Login Modal ---");
+        const loginModal = document.getElementById('login-modal');
+        document.getElementById('btn-login-open').click();
+        if (loginModal.classList.contains('hidden')) throw new Error("Login modal should open");
+        document.getElementById('btn-login-close').click();
+        if (!loginModal.classList.contains('hidden')) throw new Error("Login modal should close");
+        console.log("✅ Login Modal Test Passed");
+
+        console.log("--- Testing History Modal ---");
+        // We need authToken to be truthy to open history modal
+        authToken = "fake_token";
+        const historyModal = document.getElementById('history-modal');
+        document.getElementById('btn-history').click();
+        if (historyModal.classList.contains('hidden')) throw new Error("History modal should open");
+        document.getElementById('btn-history-close').click();
+        if (!historyModal.classList.contains('hidden')) throw new Error("History modal should close");
+        console.log("✅ History Modal Test Passed");
+
+        console.log("--- Testing Version Modal ---");
+        const versionModal = document.getElementById('version-modal');
+        document.querySelector('.version-tag').click();
+        if (versionModal.classList.contains('hidden')) throw new Error("Version modal should open");
+        document.getElementById('btn-version-close').click();
+        if (!versionModal.classList.contains('hidden')) throw new Error("Version modal should close");
+        console.log("✅ Version Modal Test Passed");
+
+        console.log("--- Testing Theme Toggle ---");
+        const themeBtn = document.getElementById('theme-toggle');
+        const initialTheme = document.documentElement.getAttribute('data-theme');
+        themeBtn.click();
+        const newTheme = document.documentElement.getAttribute('data-theme');
+        if (initialTheme === newTheme) throw new Error("Theme did not toggle");
+        console.log("✅ Theme Toggle Test Passed");
+
+        console.log("--- Testing Navigation Tabs ---");
+        const btnThis = document.getElementById('btn-this-week');
+        const btnNext = document.getElementById('btn-next-week');
+        btnNext.click();
+        if (!btnNext.classList.contains('active') || btnThis.classList.contains('active')) throw new Error("Next week tab not active");
+        btnThis.click();
+        if (!btnThis.classList.contains('active') || btnNext.classList.contains('active')) throw new Error("This week tab not active");
+        console.log("✅ Navigation Tabs Test Passed");
+        
+        console.log("--- Testing Clear Cache Button ---");
+        // Mock confirm directly inside evaluated JSDOM context
+        window.confirm = () => true;
+        document.getElementById('btn-clear-cache').click();
+        if (!window.__RELOAD_CALLED) throw new Error("Clear cache did not reload the page");
+        console.log("✅ Clear Cache Button Test Passed");
+
+        window.__TEST_PASSED = true;
+    `;
+
+dom.window.eval(jsCode + "\n" + testCode);
+
+if (!dom.window.__TEST_PASSED) {
+    throw new Error("Tests failed to reach completion inside JSDOM.");
+}
+
+process.exit(0);

version.txt

@@ -1 +1 @@
-v1.4.2
+v1.5.0