fix: update hardcoded version to 1.0.4 in Update.ps1 fallback

The portable release displays version from the hardcoded fallback in
Get-NcCurrentVersion when build folder is not present. Updated from
1.0.3 to 1.0.4 to correctly show current version in Settings tab.

Rebuilt portable package with corrected version display.

Author: Madzunkov

GITHUB_RELEASE_v1.0.4.md

@@ -0,0 +1,128 @@
+# GitHub Release Text for v1.0.4
+
+Copy and paste this into GitHub's release creation page:
+
+---
+
+## Title:
+ntchk v1.0.4 - Port Scanner & UI Enhancements 🔍
+
+## Tag version:
+v1.0.4
+
+## Target branch:
+main
+
+## Release Description:
+
+---
+
+# ntchk v1.0.4 - Port Scanner & UI Enhancements 🔍
+
+## 🎯 What's New
+
+### 🔍 TCP Port Scanner - New Diagnostics Tool
+
+A powerful, real-time port scanning capability has been added to the Diagnostics tab!
+
+- ✅ **Real TCP Connect Scanning** - Live port connectivity testing (no simulation)
+- ✅ **Flexible Port Input** - Single ports, ranges, lists, or mixed formats
+- ✅ **Service Detection** - Automatically identifies 24+ common services
+- ✅ **Smart Defaults** - Scans 18 common ports when input is empty
+- ✅ **No Admin Required** - Uses TCP connect method (like `nmap -sT`)
+
+**Supported Input Formats:**
+```
+80                    # Single port
+80,443,3389          # Multiple ports
+1-1024               # Port range
+20-25,80,443,3306    # Mixed (ranges + individual)
+```
+
+**Service Name Detection:**
+The scanner automatically identifies common services like HTTP (80), HTTPS (443), SSH (22), RDP (3389), MySQL (3306), PostgreSQL (5432), and many more!
+
+---
+
+## ✨ UI/UX Improvements
+
+### 📐 Fixed Diagnostics Tab Layout
+- **Proper Grid Structure** - 7-row grid prevents button displacement during output
+- **Scrollable Output** - Output area expands properly with border styling
+- **Placeholder Text** - Input fields show helpful examples: "example.com or 192.168.0.1"
+
+### 🎬 Animated Progress Indicators
+- **Three-Dot Animation** - Visual feedback with cycling dots (. .. ...)
+- **Clean Progress Messages** - Shows scanned ports without flooding output
+- **Real-time Updates** - Know exactly what's being tested
+
+---
+
+## 📦 Installation
+
+1. Download `ntchk-v1.0.4-Portable.zip`
+2. Extract to any folder
+3. Double-click **ntchk.exe** (recommended)
+
+---
+
+## 🔄 Upgrading from v1.0.3
+
+Simply download and extract v1.0.4 - your settings and exports are preserved!
+
+---
+
+## ✨ All Features Included
+
+This is a feature enhancement release - all features from v1.0.3 are preserved:
+
+- ⚡ **Speed Test** - Ookla Speedtest integration
+- 🌐 **Network Info** - IP, DNS, Gateway, WiFi/Ethernet detection
+- 🔧 **Diagnostics** - Ping, DNS Lookup, Traceroute, DNS flush, IP release/renew
+- 🔍 **Port Scanner** - NEW! TCP port scanning with service detection
+- ⚙️ **Settings** - Dark mode, auto-export, desktop shortcuts
+- 🔄 **Auto-Update** - GitHub-integrated update system
+- 📊 **Export** - JSON export for all results
+- 🎨 **Themes** - Light/Dark mode support
+
+---
+
+## 🛡️ Policy-Friendly Features
+
+ntchk maintains its enterprise-ready design:
+- ✅ Zero VBScript (commonly blocked by corporate policies)
+- ✅ Neutral naming (avoids "suspicious" keywords)
+- ✅ Compiled .exe launcher (trusted by security software)
+- ✅ No admin rights required for port scanning
+- ✅ Fully auditable (open source)
+
+---
+
+## 🔧 Technical Details
+
+**Port Scanner Implementation:**
+- **Method**: TCP Connect Scan (System.Net.Sockets.TcpClient)
+- **Timeout**: 1000ms per port
+- **Max Ports**: 5000 per scan (safety limit)
+- **Output**: Open/Closed statistics with service names
+
+**UI Architecture:**
+- **Grid Layout**: 7-row structure with proper spacing
+- **Animations**: DispatcherTimer-based (500ms cycle)
+- **Event Handling**: Async job execution with spinner
+- **Placeholder**: Grid overlay technique for input hints
+
+---
+
+**Full Changelog**: [v1.0.3...v1.0.4](https://github.com/MadAreYou/Network_Check_app/compare/v1.0.3...v1.0.4)
+
+---
+
+Special thanks to everyone using ntchk for network diagnostics! 🙏
+
+---
+
+## Files to Upload:
+- releases/ntchk-v1.0.4-Portable.zip
+
+---

releases/ntchk-v1.0.4-Portable.zip

@@ -21,7 +21,7 @@ function Get-NcCurrentVersion {
     }
 
     # Fallback: Return hardcoded version (for portable releases)
-    return "1.0.3"
+    return "1.0.4"
 }
 
 function Get-NcLatestRelease {