Rework the "cli" to a server instead

pyfa.spec

@@ -79,8 +79,20 @@ a = Analysis(['pyfa.py'],
              win_private_assemblies=False,
              cipher=block_cipher)
 
-pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+a_headless = Analysis(['pyfa_headless.py'],
+             pathex=pathex,
+             binaries=[],
+             datas=added_files,
+             hiddenimports=import_these,
+             hookspath=['dist_assets/pyinstaller_hooks'],
+             runtime_hooks=[],
+             excludes=['Tkinter'],
+             win_no_prefer_redirects=False,
+             win_private_assemblies=False,
+             cipher=block_cipher)
 
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+pyz_headless = PYZ(a_headless.pure, a_headless.zipped_data, cipher=block_cipher)
 
 exe = EXE(
     pyz,
@@ -96,10 +108,10 @@ exe = EXE(
     contents_directory='app',
 )
 
-# Headless CLI: console=True so stdout/stdin exist; use: pyfa-headless.exe --headless
+# Headless: server only. POST /simulate on port 9123.
 exe_headless = EXE(
-    pyz,
-    a.scripts,
+    pyz_headless,
+    a_headless.scripts,
     exclude_binaries=True,
     name='pyfa-headless',
     debug=debug,
@@ -119,12 +131,11 @@ 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,
+    a_headless.binaries,
+    a_headless.zipfiles,
+    a_headless.datas,
     strip=False,
     upx=upx,
     name='pyfa_headless',