Windows-Unterstützung: .bat-Skripte, Font-Werkzeuge in Python

- libs/glyphextract.py ersetzt die grep/sed/bc-Logik von extract-glyph.sh,
  extract-font.sh und fonttest.sh (die .sh rufen es nur noch auf);
  schreibt FONTNAME= und <font>.cfg nach $PICCREATE_OUT
- bin/*.bat: setenv, piccreate, svgconvert, webscan, extract-glyph,
  extract-font, fonttest, setup-venv; .gitattributes für CRLF
- piccreate.py: Hintergrund als file:// URL (Windows-Pfade)
- svgconvert.py: magick statt convert, Configs/CSV als UTF-8
- webscan.py: Installationshinweise für Windows
- doc/README.md: Abschnitt Windows, Font-Werkzeuge aktualisiert

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/svgconvert.py

@@ -11,6 +11,7 @@ import cProfile
 import optparse
 import configparser
 import re
+import shutil
 import subprocess
 import csv
 from string import Template
@@ -18,10 +19,14 @@ from concurrent import futures
 from progressbar import EasyProgressBar
 
 
+# ImageMagick 7 heisst "magick"; unter Windows ist "convert" ein Systemprogramm
+IMAGEMAGICK = shutil.which('magick') or shutil.which('convert')
+
+
 def get_translation(cfg_path, sec_name):
     """ lädt die Zuordnung zwischen einem .csv Eingabefile und den Attributen"""
     config = configparser.RawConfigParser()
-    config.read(cfg_path)
+    config.read(cfg_path, encoding='utf-8')
     trans = dict(config.items(sec_name))
     return dict([[v,k] for k,v in trans.items()])
 
@@ -42,12 +47,14 @@ def convertSVG(in_path,filename,pic_config):
         if options.verbose:
             print (filename, 'already exist!')
     else:
-        background = " -background " + pic_config['background'] + " "
-        resize = " -resize " + pic_config['width'] + "x" + pic_config['height'] + " "
-        density = " -density " + pic_config['density']
-        cmd = "convert"
+        cmdline = [IMAGEMAGICK,
+                   '-density', pic_config['density'],
+                   '-background', pic_config['background'],
+                   inpath,
+                   '-resize', pic_config['width'] + "x" + pic_config['height'],
+                   jpgpath]
         if not options.dry:
-            subprocess.check_call(cmd + density + background + inpath + resize + jpgpath, shell = True)
+            subprocess.check_call(cmdline)
         if options.verbose:
             print ('start converting', filename)
         Epb.slide_progbar()
@@ -111,6 +118,9 @@ font-weight:normal;font-stretch:normal;font-family:Ubuntu;\
 
 def main():
     """get all information from the switches an start the parallel conversion"""
+    if not IMAGEMAGICK and not options.dry:
+        print('ImageMagick not found. Please install it (https://imagemagick.org).')
+        return None
     #set the workpath and the default config
     work_path = os.path.expandvars('$PICCREATE_OUT')
     if options.svgfolder:
@@ -149,7 +159,7 @@ def main():
             print('\"'+ config_path +'\" does not exist. Please give the name of a config file!')
             return None
         config = configparser.RawConfigParser()
-        config.read(config_path)
+        config.read(config_path, encoding='utf-8')
         # fill the config
         pic_config = dict(config.items(options.format))
         if options.background:
@@ -173,7 +183,7 @@ def main():
             print ("you must give a config file for checking the svg files")
             return None
         svglist = []
-        with open(csv_path, newline='') as csvfile:
+        with open(csv_path, newline='', encoding='utf-8') as csvfile:
             reader = csv.DictReader(csvfile,delimiter = ';')
             for row in reader:
                 if row[pic_config['customerid']] not in filelist: