Windows-Support, Build-Skripte und Installer fuer PulseGate Desktop

- Python-App cross-platform: %APPDATA%-Konfiguration, Terminal-Erkennung
  (wt/cmd/powershell), Windows-kompatibler SSH-Start, Segoe-UI-Fonts
- App-Icon (ICO/PNG) mit Skript ohne externe Abhaengigkeiten
- PyInstaller-Build (build_windows.bat) und Inno-Setup-Installer
- Gitea-Actions-Workflow fuer automatischen Windows-Build
- requirements.txt, .gitignore, README aktualisiert; __pycache__ entfernt

.gitea/workflows/build.yml

@@ -0,0 +1,54 @@
+name: Build Windows
+
+on:
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install -r requirements-build.txt
+          python scripts\make_icon.py
+
+      - name: Build EXE (PyInstaller)
+        run: |
+          python -m PyInstaller --noconfirm --clean --onefile --windowed --name PulseGate --icon assets\pulsegate.ico desktop\pulsegate_desktop.py
+          Get-Item dist\PulseGate.exe | Select-Object FullName, Length
+
+      - name: Install Inno Setup
+        shell: bash
+        run: |
+          choco install innosetup --no-progress --yes
+
+      - name: Build installer
+        run: iscc installer\installer.iss
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: PulseGate-Windows
+          path: |
+            dist/PulseGate.exe
+            installer/output/*.exe
+
+      - name: Release
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: gitea/actions/release-action@v1
+        with:
+          files: |
+            dist/PulseGate.exe
+            installer/output/*.exe