Fix debian/rules Makefile syntax error by replacing here document with echo commands

- Replaced cat > wssshd.spec << 'EOF' with individual echo commands
- This completely avoids Makefile tab interpretation issues
- Each line is now clearly a shell command starting with proper tab indentation
- Resolves the 'missing separator' error when building wsssh-server package
- PyInstaller spec file generation now works correctly in Makefile context

wsssh-server/debian/rules

@@ -17,77 +17,75 @@
 
 override_dh_auto_configure:
 	# Create PyInstaller spec file for wssshd
-	cat > wssshd.spec << 'EOF'
-# -*- mode: python ; coding: utf-8 -*-
-
-block_cipher = None
-
-a = Analysis(
-    ['../wssshd.py'],
-    pathex=[],
-    binaries=[],
-    datas=[],
-    hiddenimports=[
-        'websockets',
-        'flask',
-        'flask_login',
-        'flask_sqlalchemy',
-        'ssl',
-        'asyncio',
-        'configparser',
-        'argparse',
-        'signal',
-        'os',
-        'sys',
-        'json',
-        'subprocess',
-        'pty',
-        'select',
-        'termios',
-        'fcntl',
-        'stat',
-        'threading',
-        'time',
-        'uuid',
-        'socket',
-        'netdb',
-        'errno',
-        'pysqlite3'
-    ],
-    hookspath=[],
-    hooksconfig={},
-    runtime_hooks=[],
-    excludes=[],
-    win_no_prefer_redirects=False,
-    win_private_assemblies=False,
-    cipher=block_cipher,
-    noarchive=False,
-)
-
-pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
-
-exe = EXE(
-    pyz,
-    a.scripts,
-    a.binaries,
-    a.zipfiles,
-    a.datas,
-    [],
-    name='wssshd',
-    debug=False,
-    bootloader_ignore_signals=False,
-    strip=False,
-    upx=True,
-    upx_exclude=[],
-    runtime_tmpdir=None,
-    console=True,
-    disable_windowed_traceback=False,
-    argv_emulation=False,
-    target_arch=None,
-    codesign_identity=None,
-    entitlements_file=None,
-)
-EOF
+	@echo '# -*- mode: python ; coding: utf-8 -*-' > wssshd.spec
+	@echo '' >> wssshd.spec
+	@echo 'block_cipher = None' >> wssshd.spec
+	@echo '' >> wssshd.spec
+	@echo 'a = Analysis(' >> wssshd.spec
+	@echo "    ['../wssshd.py']," >> wssshd.spec
+	@echo '    pathex=[],' >> wssshd.spec
+	@echo '    binaries=[],' >> wssshd.spec
+	@echo '    datas=[],' >> wssshd.spec
+	@echo '    hiddenimports=[' >> wssshd.spec
+	@echo "        'websockets'," >> wssshd.spec
+	@echo "        'flask'," >> wssshd.spec
+	@echo "        'flask_login'," >> wssshd.spec
+	@echo "        'flask_sqlalchemy'," >> wssshd.spec
+	@echo "        'ssl'," >> wssshd.spec
+	@echo "        'asyncio'," >> wssshd.spec
+	@echo "        'configparser'," >> wssshd.spec
+	@echo "        'argparse'," >> wssshd.spec
+	@echo "        'signal'," >> wssshd.spec
+	@echo "        'os'," >> wssshd.spec
+	@echo "        'sys'," >> wssshd.spec
+	@echo "        'json'," >> wssshd.spec
+	@echo "        'subprocess'," >> wssshd.spec
+	@echo "        'pty'," >> wssshd.spec
+	@echo "        'select'," >> wssshd.spec
+	@echo "        'termios'," >> wssshd.spec
+	@echo "        'fcntl'," >> wssshd.spec
+	@echo "        'stat'," >> wssshd.spec
+	@echo "        'threading'," >> wssshd.spec
+	@echo "        'time'," >> wssshd.spec
+	@echo "        'uuid'," >> wssshd.spec
+	@echo "        'socket'," >> wssshd.spec
+	@echo "        'netdb'," >> wssshd.spec
+	@echo "        'errno'," >> wssshd.spec
+	@echo "        'pysqlite3'" >> wssshd.spec
+	@echo '    ],' >> wssshd.spec
+	@echo '    hookspath=[],' >> wssshd.spec
+	@echo '    hooksconfig={},' >> wssshd.spec
+	@echo '    runtime_hooks=[],' >> wssshd.spec
+	@echo '    excludes=[],' >> wssshd.spec
+	@echo '    win_no_prefer_redirects=False,' >> wssshd.spec
+	@echo '    win_private_assemblies=False,' >> wssshd.spec
+	@echo '    cipher=block_cipher,' >> wssshd.spec
+	@echo '    noarchive=False,' >> wssshd.spec
+	@echo ')' >> wssshd.spec
+	@echo '' >> wssshd.spec
+	@echo 'pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)' >> wssshd.spec
+	@echo '' >> wssshd.spec
+	@echo 'exe = EXE(' >> wssshd.spec
+	@echo '    pyz,' >> wssshd.spec
+	@echo '    a.scripts,' >> wssshd.spec
+	@echo '    a.binaries,' >> wssshd.spec
+	@echo '    a.zipfiles,' >> wssshd.spec
+	@echo '    a.datas,' >> wssshd.spec
+	@echo '    [],' >> wssshd.spec
+	@echo "    name='wssshd'," >> wssshd.spec
+	@echo '    debug=False,' >> wssshd.spec
+	@echo '    bootloader_ignore_signals=False,' >> wssshd.spec
+	@echo '    strip=False,' >> wssshd.spec
+	@echo '    upx=True,' >> wssshd.spec
+	@echo '    upx_exclude=[],' >> wssshd.spec
+	@echo '    runtime_tmpdir=None,' >> wssshd.spec
+	@echo '    console=True,' >> wssshd.spec
+	@echo '    disable_windowed_traceback=False,' >> wssshd.spec
+	@echo '    argv_emulation=False,' >> wssshd.spec
+	@echo '    target_arch=None,' >> wssshd.spec
+	@echo '    codesign_identity=None,' >> wssshd.spec
+	@echo '    entitlements_file=None,' >> wssshd.spec
+	@echo ')' >> wssshd.spec
 
 override_dh_auto_build:
 	# Build PyInstaller binary