Ready for release. Tested the solution

.github/workflows/release-on-main.yml

@@ -0,0 +1,42 @@
+name: Release on PR to Main
+
+on:
+  pull_request:
+    branches:
+      - main
+    types: [closed]
+
+jobs:
+  build-and-release:
+    if: github.event.pull_request.merged == true
+    runs-on: windows-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run tests
+        run: npm test
+
+      - name: Build Windows MSI
+        run: npm run build:win
+
+      - name: Upload MSI artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: cashcounter-msi
+          path: dist/*.msi
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: dist/*.msi
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

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+# dependencies
+/node_modules
+
+# builds
+/build
+
+# development artifacts
+/.env
+/.env.local
+/.env.development.local
+/.env.test.local
+/.env.production.local
+
+# log files
+/logs
+
+# editor files
+/.vscode
+/.idea
+/.nvm
+/.npm
+/.yarn
+
+# misc
+/.DS_Store
+/Thumbs.db
+
+# electron-builder
+/dist

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 DDJ Labs
+Copyright (c) 2025 Doug Jenkins
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

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+# Cash Counter
+
+A minimal offline Electron app to count U.S. currency with printing and PDF export.
+
+- Cross-platform (Windows, macOS, Linux). Initial release focuses on Windows MSI.
+- Offline only. No persistence. Clean, calculator-like UI.
+
+## Features
+
+- **Minimal, Calculator-like UI:** Clean, responsive interface for quick cash counting.
+- **Supports All U.S. Denominations:** Inputs for bills ($100, $50, $20, $10, $5, $2, $1) and coins (50¢, 25¢, 10¢, 5¢, 1¢).
+- **Live Validation:** Only whole, non-negative integers are accepted for counts. Invalid input is highlighted.
+- **Real-time Calculation:** Subtotals and grand total update as you type.
+- **Print and PDF Export:** Print the report or export it as a PDF, including a timestamp and optional description.
+- **Keyboard Shortcuts:**  
+  - Ctrl+P: Print  
+  - Ctrl+E: Export PDF  
+  - Ctrl+C: Calculate (if a button is present)
+- **Reset and Exit:** Quickly clear all fields or exit the app.
+- **No Data Persistence:** All data is cleared on exit; nothing is stored on disk.
+- **Cross-platform:** Works on Windows, macOS, and Linux (Windows MSI build supported).
+
+## How it Works
+
+- **Main Process (`src/main.js`):**  
+  - Sets up the Electron window and application menu.
+  - Handles print, export, reset, and exit actions via IPC and menu.
+  - Uses Electron's `printToPDF` and system dialogs for export/print.
+
+- **Preload Script (`src/preload.js`):**  
+  - Exposes safe APIs (`print`, `exportPdf`, `exit`, `onReset`) to the renderer via `contextBridge`.
+
+- **Calculation Library (`src/lib/calc.js`):**  
+  - Defines denominations and their values in cents.
+  - Provides functions for validation, subtotal, and grand total calculation.
+  - Ensures all math is done in integer cents to avoid floating-point errors.
+
+- **Renderer (`src/renderer/renderer.js`):**  
+  - Dynamically builds the input grid for all denominations.
+  - Handles user input, validation, and live subtotal/grand total updates.
+  - Manages print/export/reset/exit actions and keyboard shortcuts.
+  - Populates a print-optimized report for printing/PDF export.
+
+- **UI (`src/renderer/index.html`, `styles.css`):**  
+  - Modern, accessible layout with print-optimized styles.
+  - Print and export include a timestamp and optional description.
+
+## Requirements Summary (from `docs/prd.md`)
+- Inputs for bills: $100, $50, $20, $10, $5, $2, $1
+- Inputs for coins: 50¢, 25¢, 10¢, 5¢, 1¢
+- Validate whole non-negative integers only
+- Calculate subtotals and grand total
+- Print and Export to PDF
+- Keyboard shortcuts: Ctrl+P (Print), Ctrl+E (Export), Ctrl+C (Calculate)
+
+## Project Structure
+```
+.
+├── docs/
+│   └── prd.md
+├── src/
+│   ├── assets/
+│   │   └── logo.svg
+│   ├── lib/
+│   │   └── calc.js
+│   ├── main.js
+│   ├── preload.js
+│   └── renderer/
+│       ├── index.html
+│       ├── renderer.js
+│       └── styles.css
+├── tests/
+│   └── calc.test.js
+├── jest.config.cjs
+└── package.json
+```
+
+## Getting Started
+
+1. Install dependencies
+```bash
+npm install
+```
+
+2. Run the app in development
+```bash
+npm run dev
+```
+
+3. Run unit tests
+```bash
+npm test
+```
+
+4. Build Windows MSI (on Windows)
+```bash
+npm run build:win
+```
+MSI will be output to `dist/`.
+
+## Notes
+- Calculations are done in integer cents to avoid floating-point errors (`src/lib/calc.js`).
+- The renderer loads the report table dynamically after calculation.
+- Printing uses the system print dialog; PDF export uses a save dialog and Electron `printToPDF`.
+- No data is stored on disk; app opens with blank fields every time.

docs/prd.md

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+# Cash Counting Application – Product Requirement Document
+
+## Overview
+The Cash Counting Application is a desktop tool built with **Electron** to assist users in counting physical U.S. currency. It will run on **Windows, Mac, and Linux**, with the initial release focusing on **Windows MSI installer packaging**. The application provides a simple interface for inputting counts of bills and coins, calculates the total, and generates a printable/exportable report.
+
+## Purpose
+This application helps users quickly total the value of physical U.S. currency, including both bills and coins. It ensures accuracy in manual cash counts and provides a formatted report for recordkeeping.
+
+---
+
+## Supported Currency Denominations
+- **Bills:** $100, $50, $20, $10, $5, $2, $1  
+- **Coins:** $0.50, $0.25, $0.10, $0.05, $0.01  
+
+---
+
+## Functional Requirements
+
+### User Interface
+- Provide **text boxes** for each denomination.  
+- Text boxes accept **only whole positive integers** (no decimals, negatives, or non-numeric input).  
+- Pressing **Tab** moves focus to the next denomination field.  
+- A **Calculate Total** button computes the total and displays:  
+  - Subtotal per denomination  
+  - Grand total  
+
+### Report Generation
+- A **Print Report** button generates a report with:  
+  - Tabular layout of denominations, quantity, subtotal  
+  - Grand total  
+  - Date and time of the count  
+  - Simple header with application logo  
+
+- Reports can be:  
+  - Printed directly to the **default system printer**  
+  - Exported to **PDF**  
+
+### Application Behavior
+- Always starts with blank fields (no persistence of previous data).  
+- Works **fully offline**, with no internet requirements.  
+- Minimal, clean UI similar to a calculator.  
+- Optional **keyboard shortcuts**:  
+  - `Ctrl+P` for Print  
+  - `Ctrl+E` for Export to PDF  
+  - `Ctrl+C` for Calculate  
+
+---
+
+## Non-Functional Requirements
+- Cross-platform support: **Windows, Mac, Linux** (initial release targets Windows).  
+- Windows build distributed as an **MSI installer**.  
+- Performance: Calculation and report generation must complete in <1 second for typical inputs.  
+- Security: No internet access required; no data storage on disk.  
+
+---
+
+## Deliverables
+1. Electron application source code.  
+2. Windows MSI installer.  
+3. Documentation for installation and usage.  
+
+---
+
+## Future Enhancements (Out of Scope for MVP)
+- Multi-currency support  
+- CSV export  
+- Custom logo upload  
+- Persistence of last counts  
+- Advanced report metadata (username, machine name)  
+
+---
+
+## Report Mock-Up
+
+Below is a sample layout of the printed/exported report. In the application, this will be formatted with a logo, alignment, and clean styling.
+
+---
+
+# 🧾 Cash Counting Report
+
+[LOGO HERE]
+
+**Cash Counting Application**  
+**Date/Time:** 2025-08-30 14:32  
+
+---
+
+### Currency Breakdown
+
+| Denomination | Quantity | Subtotal |
+|--------------|----------|----------|
+| $100 Bill    | 5        | $500.00  |
+| $50 Bill     | 2        | $100.00  |
+| $20 Bill     | 7        | $140.00  |
+| $10 Bill     | 3        | $30.00   |
+| $5 Bill      | 4        | $20.00   |
+| $2 Bill      | 0        | $0.00    |
+| $1 Bill      | 12       | $12.00   |
+| 50¢ Coin     | 6        | $3.00    |
+| 25¢ Coin     | 8        | $2.00    |
+| 10¢ Coin     | 10       | $1.00    |
+| 5¢ Coin      | 15       | $0.75    |
+| 1¢ Coin      | 23       | $0.23    |
+
+---
+
+### Grand Total
+**$808.98**
+
+---

jest.config.cjs

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+/** @type {import('jest').Config} */
+module.exports = {
+  testEnvironment: 'node',
+  roots: ['<rootDir>/tests'],
+  moduleFileExtensions: ['js', 'json'],
+  collectCoverage: true,
+  collectCoverageFrom: ['src/lib/**/*.js'],
+};