feat(app): Onboarding, Settings-Redesign und Docs für v1.9.0

- Onboarding mit Widget-Toolbar Slide und Gaming Starter Board
- Settings in Darstellung-Modal und schlankes Settings-Panel
- About-Block als fixierten Footer im Settings-Panel
- Dropdown-Optionen an Theme-Farben anpassen
- Projekt-Dokumentation (Architektur, Widget-Schema, Patterns)
- Firefox Update-URL für Store-Veröffentlichung
- Versions-Bump auf 1.9.0 in allen Manifests
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# Hellion Dashboard — Architecture
## Overview
Hellion Dashboard is a browser extension (NewTab replacement) built with **Vanilla JavaScript ES2020**, **CSS Custom Properties**, and **zero dependencies**. No build step, no framework, no bundler — files are loaded directly via `<script>` tags.
**Storage:** `chrome.storage.local` with `localStorage` fallback.
**Manifest:** V3 for Chromium browsers, V3 for Firefox (separate manifest).
---
## File Structure
```
HOM_NewTab_Project/
├── newtab.html # Single HTML entry point
├── manifest.json # Chrome/Edge/Brave/Vivaldi (MV3)
├── manifest.firefox.json # Firefox (MV3)
├── manifest.opera.json # Opera/Opera GX (MV3 + workarounds)
├── src/
│ ├── css/
│ │ └── main.css # All styles, themes, responsive breakpoints
│ └── js/
│ ├── storage.js # Storage abstraction layer
│ ├── state.js # Global state, defaults, helpers
│ ├── themes.js # Theme definitions & application
│ ├── boards.js # Board/bookmark rendering & events
│ ├── drag.js # Drag & drop (Pointer Events API)
│ ├── settings.js # Settings panel, toggles, theme picker
│ ├── search.js # Search bar (Google, DuckDuckGo, Bing)
│ ├── widgets.js # Widget manager (registry, drag, resize)
│ ├── notes.js # Notes/checklists (multi-instance widgets)
│ ├── calculator.js # Calculator widget (single-instance)
│ ├── timer.js # Timer/countdown widget (single-instance)
│ ├── image-ref.js # Image reference widget (multi-instance)
│ ├── onboarding.js # First-run onboarding flow
│ ├── data.js # JSON export/import (backup & restore)
│ ├── app.js # Init, clock, global events (entry point)
│ └── dialog.js # Custom dialog system (alert, confirm)
├── assets/
│ ├── icons/ # Extension icons (16-512px)
│ └── themes/ # Theme background images
└── docs/ # Documentation (you are here)
```
---
## Module Responsibilities
Each module has exactly one responsibility. They communicate through global references (no import/export — this is a browser extension without a bundler).
| Module | Responsibility |
|---|---|
| `storage.js` | **Only** place that touches `chrome.storage` / `localStorage`. All other modules go through `Store.get()` / `Store.set()`. |
| `state.js` | Global `boards` and `settings` arrays, default values, `uid()`, `escHtml()`, `getFaviconUrl()`. |
| `themes.js` | Theme CSS variable application. 8 themes, each with its own `[data-theme]` block in CSS. |
| `boards.js` | Renders boards and bookmarks. Event delegation on board containers. |
| `drag.js` | Board and bookmark reordering via Pointer Events API. |
| `settings.js` | Settings panel UI, toggle handlers, theme modal, background upload. |
| `search.js` | Search bar with engine switching (Google, DuckDuckGo, Bing). |
| `widgets.js` | Widget manager — creates DOM, handles drag/resize/z-index, provides registry. See [widget-schema.md](widget-schema.md). |
| `notes.js` | Notes and checklists as widgets. Multi-instance (max 5). Notebook sidebar. Also handles widget toolbar events. |
| `calculator.js` | Calculator widget. Single-instance. Shunting-yard expression parser (no `eval()`). |
| `timer.js` | Timer/countdown widget. Single-instance. Presets, Web Audio API alarm, tab-title blink. |
| `image-ref.js` | Image reference widget. Multi-instance (max 3). Canvas API WebP conversion, sessionStorage for image data. |
| `onboarding.js` | Multi-slide onboarding flow. Gaming starter board opt-in. |
| `data.js` | JSON export/import with validation. Handles boards, notes, calculator history, timer presets. |
| `app.js` | Entry point. Calls `init()` on DOMContentLoaded. Clock, global event binding. |
| `dialog.js` | `HellionDialog.alert()` and `HellionDialog.confirm()` — custom styled dialogs replacing native browser dialogs. |
---
## Init Sequence
```
DOMContentLoaded
→ init()
→ Store.get('boards') # Load saved boards
→ Store.get('settings') # Load saved settings
→ applySettings() # Apply theme, toggles, etc.
→ renderBoards() # Render all boards
→ startClock() # Start clock/date display
→ bindGlobalEvents() # Header buttons, modals
→ bindSettingsEvents() # Settings toggles, theme picker
→ initSearch() # Search bar
→ migrateSticky() # Legacy sticky note migration
→ Notes.init() # Notes + widget toolbar
→ Calculator.init() # Calculator widget
→ Timer.init() # Timer widget
→ ImageRef.init() # Image reference widget
→ initDataButtons() # Export/import buttons
→ Onboarding check # First-run onboarding
```
---
## Script Load Order
Scripts are loaded in `newtab.html` in dependency order:
```html
<script src="src/js/dialog.js"></script>
<script src="src/js/storage.js"></script>
<script src="src/js/state.js"></script>
<script src="src/js/themes.js"></script>
<script src="src/js/boards.js"></script>
<script src="src/js/drag.js"></script>
<script src="src/js/settings.js"></script>
<script src="src/js/search.js"></script>
<script src="src/js/onboarding.js"></script>
<script src="src/js/widgets.js"></script>
<script src="src/js/notes.js"></script>
<script src="src/js/calculator.js"></script>
<script src="src/js/timer.js"></script>
<script src="src/js/image-ref.js"></script>
<script src="src/js/data.js"></script>
<script src="src/js/app.js"></script>
```
**Rule:** A module may only reference modules loaded before it.
---
## Z-Index Hierarchy
| Layer | z-index | Elements |
|---|---|---|
| Background | 0-2 | `#bgLayer`, boards |
| Search bar | 90 | `.search-bar-wrapper` |
| Widgets + Toolbar | 100+ | `.widget`, `.widget-toolbar` |
| Header | 100 | `#header` |
| Settings panel | 200 | `#settingsPanel` |
| Dialogs / Modals | 300 | `.hellion-dialog-overlay`, modals |
| Onboarding | 400 | `#onboardingOverlay` |
Widgets use incrementing z-index (`WidgetManager._topZ++`) to stack above each other on click.
---
## Storage Keys
| Key | Type | Content |
|---|---|---|
| `boards` | Array | Board objects with bookmarks |
| `settings` | Object | User preferences (theme, toggles, etc.) |
| `widgetStates` | Object | All widget data (see [widget-schema.md](widget-schema.md)) |
| `onboardingDone` | Boolean | Whether onboarding has been completed |
| `lastBackupReminder` | Number | Timestamp of last backup reminder |
---
## Browser Compatibility
| Browser | Engine | Manifest |
|---|---|---|
| Chrome | Chromium MV3 | `manifest.json` |
| Edge | Chromium MV3 | `manifest.json` |
| Brave | Chromium MV3 | `manifest.json` |
| Vivaldi | Chromium MV3 | `manifest.json` |
| Opera / GX | Chromium MV3 | `manifest.opera.json` |
| Firefox | Gecko MV3 | `manifest.firefox.json` |
Changes affecting manifest fields must be synchronized across all three manifest files.
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# Hellion Dashboard — Code Patterns & Conventions
## Core Principles
- **Vanilla JS ES2020** — No frameworks, no TypeScript, no build step
- **Zero dependencies** — Everything is built from scratch
- **`createElement` only** — Never use `innerHTML` (XSS prevention)
- **CSS Custom Properties** — No hardcoded colors, everything through `var(--name)`
- **Event delegation** — One listener per container, not per element
- **Storage abstraction** — All storage access through `Store.get()` / `Store.set()`
---
## Pattern: Storage Abstraction
**File:** `src/js/storage.js`
All persistent data goes through the `Store` object. Never access `chrome.storage` or `localStorage` directly.
```javascript
// Reading
const boards = await Store.get('boards'); // Returns null if not found
const settings = await Store.get('settings');
// Writing
await Store.set('boards', boards);
await Store.set('settings', settings);
// Quota check (chrome.storage only, 10 MB limit)
await Store.checkQuota();
```
**Why?** The `Store` handles the chrome.storage / localStorage fallback transparently. It also provides unified error handling (shows a dialog when storage is full).
---
## Pattern: Event Delegation
Instead of attaching listeners to each element, attach one to the container and use `closest()` to find the target.
```javascript
// GOOD — one listener, handles all bookmarks
container.addEventListener('click', (e) => {
const bmItem = e.target.closest('.bm-item');
if (!bmItem) return;
const id = bmItem.dataset.id;
// Handle click
});
// BAD — listener per element
bookmarks.forEach(bm => {
bm.addEventListener('click', handler); // Don't do this!
});
```
**Used in:** `boards.js` (board/bookmark events), `notes.js` (toolbar), `calculator.js` (button grid)
---
## Pattern: createElement over innerHTML
Always build DOM with `document.createElement()`. This prevents XSS and is the project's #1 security rule.
```javascript
// GOOD
const link = document.createElement('a');
link.href = bookmark.url;
link.textContent = bookmark.title;
container.appendChild(link);
// BAD — XSS risk!
container.innerHTML = `<a href="${url}">${title}</a>`;
```
---
## Pattern: Shared Storage Key
Multiple widget modules share the `widgetStates` key. Every module must read-before-write and preserve other modules' data.
```javascript
async save() {
const data = await Store.get('widgetStates') || {};
// Write your own data
data.yourKey = { /* ... */ };
// DON'T overwrite — the key already contains other modules' data
await Store.set('widgetStates', data);
}
```
See [widget-schema.md](widget-schema.md) for the full `widgetStates` structure.
---
## Pattern: Widget Lifecycle Hooks
Single-instance widgets (Calculator, Timer) need to know when they're closed, minimized, or reopened. They wrap `WidgetManager` methods in their `init()`:
```javascript
async init() {
// Wrap close
const prevClose = WidgetManager.close;
const self = this;
WidgetManager.close = function(id) {
prevClose.call(WidgetManager, id);
if (id === self.WIDGET_ID) {
self.onClose();
}
};
// Wrap minimize
const prevMinimize = WidgetManager.minimize;
WidgetManager.minimize = async function(id) {
await prevMinimize.call(WidgetManager, id);
if (id === self.WIDGET_ID) {
self._isOpen = false;
await self.save();
}
};
}
```
**Important:** Multiple widgets chain these wraps. Calculator wraps first, Timer wraps Calculator's already-wrapped version, and so on. The chain must not break.
---
## Pattern: Debounced Save
For frequent updates (typing in notes, moving widgets), use debounced saves to avoid excessive storage writes:
```javascript
_saveTimer: null,
_debouncedSave() {
clearTimeout(this._saveTimer);
this._saveTimer = setTimeout(() => this.save(), 500);
}
// Usage: call _debouncedSave() instead of save() for frequent events
textarea.addEventListener('input', () => {
noteData.content = textarea.value;
this._debouncedSave();
});
```
**Used in:** `notes.js` (text editing), `image-ref.js` (label editing)
---
## Pattern: Theme System
All themes use CSS Custom Properties defined in `[data-theme="name"]` blocks:
```css
[data-theme="nebula"] {
--bg-primary: #0a0e17;
--bg-board: rgba(15, 20, 35, 0.65);
--text-primary: #e0e6f0;
--accent: #7db3ff;
--border: rgba(125, 179, 255, 0.12);
/* ... more variables */
}
```
**Never hardcode colors in JS.** Use CSS classes or variables:
```javascript
// GOOD — let CSS handle colors
element.classList.add('active');
// BAD — hardcoded color
element.style.color = '#7db3ff';
```
8 themes are available: Nebula, Crescent, Event Horizon, Merchantman, Julia & Jin, SC Sunset, Hellion HUD, Hellion Energy.
---
## Pattern: Onboarding Slides
The onboarding system (`onboarding.js`) uses a data-driven slide array. Each slide is an object with rendering hints:
```javascript
{
hero: '🎮', // Large emoji/icon
title: 'Slide Title', // Heading
text: 'Description...', // Optional text paragraph
features: ['Item 1', ...], // Optional bullet list
showThemes: true, // Optional theme grid
interactive: 'gaming-board' // Optional custom buttons
}
```
The `_render()` method reads these properties and builds the DOM. To add a new slide, just add an object to the `slides` array.
---
## Pattern: Dialog System
Custom dialogs replace native `alert()` and `confirm()`:
```javascript
// Alert (informational)
await HellionDialog.alert('Message text', {
type: 'info', // 'info', 'success', 'warning', 'danger'
title: 'Title'
});
// Confirm (yes/no)
const ok = await HellionDialog.confirm('Are you sure?', {
type: 'danger',
title: 'Delete',
confirmText: 'Delete', // Custom button text
cancelText: 'Cancel'
});
if (ok) { /* user confirmed */ }
```
---
## Pattern: Pointer Events for Drag
Widget dragging and board reordering use the Pointer Events API (not mouse events):
```javascript
element.addEventListener('pointerdown', (e) => {
element.setPointerCapture(e.pointerId);
function onMove(ev) {
// Update position
}
function onUp() {
element.releasePointerCapture(e.pointerId);
element.removeEventListener('pointermove', onMove);
element.removeEventListener('pointerup', onUp);
}
element.addEventListener('pointermove', onMove);
element.addEventListener('pointerup', onUp);
});
```
**Why Pointer Events over Mouse Events?** They work with both mouse and touch, and `setPointerCapture` ensures events continue even if the cursor leaves the element.
---
## Pattern: Canvas API Image Processing
The image reference widget converts uploaded images to WebP for smaller size:
```javascript
_processFile(file) {
return new Promise((resolve, reject) => {
const objectUrl = URL.createObjectURL(file);
const img = new Image();
img.onload = () => {
const canvas = document.createElement('canvas');
canvas.width = img.width;
canvas.height = img.height;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
const webpUrl = canvas.toDataURL('image/webp', 0.85);
URL.revokeObjectURL(objectUrl);
resolve(webpUrl);
};
img.onerror = () => {
URL.revokeObjectURL(objectUrl);
reject(new Error('Image could not be loaded'));
};
img.src = objectUrl;
});
}
```
**Important:** Always call `URL.revokeObjectURL()` to free memory.
---
## Coding Rules Summary
| Rule | Rationale |
|---|---|
| `createElement` only, never `innerHTML` | XSS prevention |
| All storage through `Store` | Browser compatibility |
| CSS variables, no hardcoded colors | Theme support |
| Event delegation | Performance, dynamic content |
| `const`/`let`, never `var` | Block scoping |
| No external dependencies | Extension simplicity |
| No build step | Direct development |
| JSDoc comments on public functions | Documentation |
| URL validation before `href` | Security |
| Error handling on storage operations | Graceful failure |
---
## Manifest Synchronization
Three manifest files must stay in sync:
- `manifest.json` — Chrome, Edge, Brave, Vivaldi
- `manifest.firefox.json` — Firefox
- `manifest.opera.json` — Opera, Opera GX
When changing version numbers, permissions, or content script entries, update all three files.
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# Hellion Dashboard — Widget Schema
## Overview
The widget system provides draggable, resizable floating panels managed by `WidgetManager` (`src/js/widgets.js`). Each widget type has its own module that handles content rendering and state management.
---
## Widget Types
| Type | Module | Instance | Max | Storage |
|---|---|---|---|---|
| `note` | `notes.js` | Multi | 5 | Persistent (`widgetStates.notes`) |
| `calculator` | `calculator.js` | Single | 1 | Persistent (`widgetStates.calculator`) |
| `timer` | `timer.js` | Single | 1 | Persistent (`widgetStates.timer`) |
| `image` | `image-ref.js` | Multi | 3 | Meta: persistent, Image data: sessionStorage |
---
## WidgetManager API
### `create(type, config) → string`
Creates a widget and appends it to the DOM.
```javascript
const id = WidgetManager.create('note', {
id: 'note_abc123', // Optional, auto-generated if omitted
title: 'My Note', // Default: 'Note'
x: 120, // Left position in px
y: 80, // Top position in px
width: 280, // Width in px (min: 200)
height: 220, // Height in px (min: 150)
open: true // Visible state (default: true)
});
```
### `getBody(id) → HTMLElement | null`
Returns the `.widget-body` element for content rendering.
```javascript
const body = WidgetManager.getBody('widget_calculator');
if (body) Calculator.renderBody(body);
```
### `getState(id) → Object | null`
Returns the current widget state (position, size, open status).
```javascript
const state = WidgetManager.getState('widget_timer');
// → { id, type, title, x, y, width, height, open }
```
### `close(id)`
Permanently removes a widget from the DOM and registry.
### `minimize(id)`
Hides a widget with animation. Widget remains in registry with `open: false`.
### `openWidget(id)`
Restores a minimized widget with animation.
### `bringToFront(id)`
Increments z-index to bring widget above all others.
### `save() → Array`
Returns an array of all `type: 'note'` widget states. Used by `Notes.save()` to merge with note content data.
### `restore(renderCallback)`
Loads widget states from storage and recreates all note widgets. Only handles notes — single-instance widgets (calculator, timer) restore themselves in their own `init()`.
---
## Shared Storage Key: `widgetStates`
All widget modules share a single storage key. Each module's `save()` method must preserve other modules' data.
```javascript
// Structure of widgetStates
{
notes: [
{
id: 'note_abc123',
title: 'My Note',
content: 'Hello world',
template: 'text', // 'text' or 'checklist'
x: 120, y: 80,
width: 280, height: 220,
open: true,
checklistItems: [], // For checklist template
checkedItems: [] // Checked item IDs
}
],
calculator: {
x: 400, y: 120,
width: 280, height: 400,
open: false,
history: [
{ expr: '2 + 3', result: '5' }
]
},
timer: {
x: 600, y: 80,
width: 260, height: 360,
open: false,
muted: false,
presets: [
{ name: 'Forschung', seconds: 2700 }
]
},
imageRef: {
images: [
{
id: 'image_0',
label: 'Bauplan',
x: 200, y: 120,
width: 320, height: 280,
open: true
}
]
}
}
```
### Save Pattern — Preserving Other Modules' Data
Every module that saves to `widgetStates` must read existing data first and preserve keys it doesn't own:
```javascript
// Example from notes.js
async save() {
const existing = await Store.get(this.STORAGE_KEY);
const saveData = { notes: mergedNotes };
// Preserve other modules
if (existing && existing.calculator) saveData.calculator = existing.calculator;
if (existing && existing.timer) saveData.timer = existing.timer;
if (existing && existing.imageRef) saveData.imageRef = existing.imageRef;
await Store.set(this.STORAGE_KEY, saveData);
}
```
---
## Creating a New Widget Type
### Step 1: Choose Single or Multi-Instance
- **Single-instance** (like Calculator, Timer): One widget with a fixed ID. `toggle()` opens/closes.
- **Multi-instance** (like Notes, ImageRef): Multiple widgets with dynamic IDs. `create()` adds new ones.
### Step 2: Create the Module (`src/js/your-widget.js`)
```javascript
const YourWidget = {
WIDGET_ID: 'widget_yourwidget', // Fixed ID for single-instance
STORAGE_KEY: 'widgetStates',
_isOpen: false,
// Load state from storage
async load() {
const data = await Store.get(this.STORAGE_KEY);
if (data && data.yourWidget) {
// Restore your state
}
},
// Save state, preserving other modules
async save() {
const data = await Store.get(this.STORAGE_KEY) || {};
if (data.notes === undefined) data.notes = [];
const widgetState = WidgetManager.getState(this.WIDGET_ID);
data.yourWidget = {
x: widgetState ? widgetState.x : 400,
y: widgetState ? widgetState.y : 120,
width: widgetState ? widgetState.width : 280,
height: widgetState ? widgetState.height : 300,
open: this._isOpen,
// ... your custom data
};
await Store.set(this.STORAGE_KEY, data);
},
// Open widget
async open() {
if (this._isOpen) {
WidgetManager.bringToFront(this.WIDGET_ID);
return;
}
const data = await Store.get(this.STORAGE_KEY);
const saved = (data && data.yourWidget) ? data.yourWidget : {};
WidgetManager.create('yourwidget', {
id: this.WIDGET_ID,
title: 'Your Widget',
x: saved.x || 400,
y: saved.y || 120,
width: saved.width || 280,
height: saved.height || 300,
open: true
});
const body = WidgetManager.getBody(this.WIDGET_ID);
if (body) this.renderBody(body);
this._isOpen = true;
await this.save();
},
// Toggle open/close
async toggle() {
if (this._isOpen) {
const entry = WidgetManager._widgets.get(this.WIDGET_ID);
if (entry && entry.state.open) {
await WidgetManager.minimize(this.WIDGET_ID);
this._isOpen = false;
await this.save();
} else if (entry) {
await WidgetManager.openWidget(this.WIDGET_ID);
this._isOpen = true;
await this.save();
}
} else {
await this.open();
}
},
// Render widget content
renderBody(bodyEl) {
bodyEl.textContent = '';
// Build your UI with createElement (never innerHTML!)
},
// Initialize and hook into lifecycle
async init() {
await this.load();
// Restore if was open last time
const data = await Store.get(this.STORAGE_KEY);
if (data && data.yourWidget && data.yourWidget.open) {
await this.open();
}
// Hook into close event
const self = this;
const prevClose = WidgetManager.close;
WidgetManager.close = function(id) {
prevClose.call(WidgetManager, id);
if (id === self.WIDGET_ID) {
self._isOpen = false;
self.save();
}
};
// Hook into minimize event
const prevMinimize = WidgetManager.minimize;
WidgetManager.minimize = async function(id) {
await prevMinimize.call(WidgetManager, id);
if (id === self.WIDGET_ID) {
self._isOpen = false;
await self.save();
}
};
// Hook into open event
const prevOpen = WidgetManager.openWidget;
WidgetManager.openWidget = async function(id) {
await prevOpen.call(WidgetManager, id);
if (id === self.WIDGET_ID) {
self._isOpen = true;
const body = WidgetManager.getBody(self.WIDGET_ID);
if (body && body.children.length === 0) {
self.renderBody(body);
}
await self.save();
}
};
}
};
```
### Step 3: Integration Checklist
1. **`newtab.html`** — Add `<script>` tag (after `widgets.js`, before `data.js`)
2. **`newtab.html`** — Add toolbar button: `<button class="widget-toolbar-btn" data-action="your-action">`
3. **`notes.js`** — Add toolbar handler in `initToolbar()`: `} else if (action === 'your-action') { YourWidget.toggle(); }`
4. **`notes.js`** — Preserve your data in `save()`: `if (existing && existing.yourWidget) saveData.yourWidget = existing.yourWidget;`
5. **`app.js`** — Add `await YourWidget.init();` to the init sequence
6. **`src/css/main.css`** — Add widget-specific CSS styles
7. **`data.js`** — Add export/import logic (if data should be included in backups)
---
## Widget DOM Structure
Every widget created by `WidgetManager.create()` has this structure:
```html
<div class="widget" data-widget-id="widget_abc123"
style="left: 120px; top: 80px; width: 280px; height: 220px;">
<div class="widget-header">
<span class="widget-title">Title</span>
<div class="widget-actions">
<button class="widget-btn widget-minimize"></button>
<button class="widget-btn widget-close"></button>
</div>
</div>
<div class="widget-body">
<!-- Your content goes here (via renderBody) -->
</div>
<div class="widget-resize-handle"></div>
</div>
```
- **Header** is the drag handle (Pointer Events)
- **Title** supports double-click to edit (contentEditable, max 20 chars)
- **Body** is where your module renders content
- **Resize handle** appears on hover (bottom-right corner)