Split the binary into gui and headless versions

pyfa.spec

@@ -96,6 +96,19 @@ exe = EXE(
     contents_directory='app',
 )
 
+# Headless CLI: console=True so stdout/stdin exist; use: pyfa-headless.exe --headless
+exe_headless = EXE(
+    pyz,
+    a.scripts,
+    exclude_binaries=True,
+    name='pyfa-headless',
+    debug=debug,
+    strip=False,
+    upx=upx,
+    console=True,
+    contents_directory='app',
+)
+
 coll = COLLECT(
     exe,
     a.binaries,
@@ -106,6 +119,17 @@ coll = COLLECT(
     name='pyfa',
 )
 
+# Headless exe; build puts it in dist/pyfa_headless/; copy pyfa-headless.exe into dist/pyfa/ after build
+coll_headless = COLLECT(
+    exe_headless,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    strip=False,
+    upx=upx,
+    name='pyfa_headless',
+)
+
 if platform.system() == 'Darwin':
     info_plist = {
         'NSHighResolutionCapable': 'True',