diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index bfe37d43d25..cc196130696 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -29,3 +29,7 @@ be112ed44cb68f622a770c72fd29dd10899e9d07
 73a3529d8b10eb73a45117eead906c0a9cb4c41b
 # String concatenation
 9616ef6b18b5c5a5b64037a640d205868e66b964
+# Run runlint.bat on scons and .pyw files
+0643d6e41089fb6aed22d489c7ccc3f32381f199
+# Run add-trailing-comma and ruff format on scons files
+9fd7ba5cb268b64aacf45a43b1edb64c120ce20c
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 6d5d4e95f96..e3cdb5541e5 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -151,6 +151,7 @@ repos:
       pass_filenames: false
       types: [python]
       files: ^source/.*$
+      exclude: "(sconscript|sconstruct)$"
     - id: unitTest
       name: unit tests
       entry: ./rununittests.bat
@@ -168,3 +169,4 @@ repos:
       entry: uv run pyright
       language: system
       types: [python]
+      exclude: "(sconscript|sconstruct)$"
diff --git a/appx/sconscript b/appx/sconscript
index 45525d3baee..ab30388576a 100644
--- a/appx/sconscript
+++ b/appx/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2018-2025 NV Access Limited
 # This file may be used under the terms of the GNU General Public License, version 2 or later, as modified by the NVDA license.
@@ -13,7 +14,7 @@ Import(
 		"env",
 		"outFilePrefix",
 		"isStoreSubmission",
-	]
+	],
 )
 
 
diff --git a/cldrDict_sconscript b/cldrDict_sconscript
index 60f444e2bc0..119dea76ab1 100644
--- a/cldrDict_sconscript
+++ b/cldrDict_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2018-2022 NV Access Limited
 # This file may be used under the terms of the GNU General Public License, version 2 or later.
diff --git a/nvdaHelper/ISimpleDOM_sconscript b/nvdaHelper/ISimpleDOM_sconscript
index cd0b858a0ea..1a52a31ef4c 100644
--- a/nvdaHelper/ISimpleDOM_sconscript
+++ b/nvdaHelper/ISimpleDOM_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -19,7 +20,9 @@ env["MIDLCOM"] = env["MIDLCOM"][:-6]
 # Copy some secondary IDL files included by ISimpleDOMNode.idl
 idlDeps = [
 	env.Command(
-		"ISimpleDOMText.idl", "#/miscDeps/include/ISimpleDOM/ISimpleDOMText.idl", Copy("$TARGET", "$SOURCE")
+		"ISimpleDOMText.idl",
+		"#/miscDeps/include/ISimpleDOM/ISimpleDOMText.idl",
+		Copy("$TARGET", "$SOURCE"),
 	),
 	env.Command(
 		"ISimpleDOMDocument.idl",
diff --git a/nvdaHelper/UIARemote/sconscript b/nvdaHelper/UIARemote/sconscript
index 13d8b824f99..f52a9b1e426 100644
--- a/nvdaHelper/UIARemote/sconscript
+++ b/nvdaHelper/UIARemote/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -16,7 +17,7 @@ Import(
 	[
 		"env",
 		"localLib",
-	]
+	],
 )
 
 UIARemoteLib = env.SharedLibrary(
diff --git a/nvdaHelper/acrobatAccess_sconscript b/nvdaHelper/acrobatAccess_sconscript
index 1e7d0c00d78..2c587e393aa 100644
--- a/nvdaHelper/acrobatAccess_sconscript
+++ b/nvdaHelper/acrobatAccess_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,9 @@
 Import("env")
 
 idlFile = env.Command(
-	"acrobatAccess.idl", "#/miscDeps/include/acrobatAccess/acrobatAccess.idl", Copy("$TARGET", "$SOURCE")
+	"acrobatAccess.idl",
+	"#/miscDeps/include/acrobatAccess/acrobatAccess.idl",
+	Copy("$TARGET", "$SOURCE"),
 )
 
 tlbFile, headerFile, iidSourceFile, proxySourceFile, dlldataSourceFile = env.TypeLibrary(source=idlFile)
diff --git a/nvdaHelper/archBuild_sconscript b/nvdaHelper/archBuild_sconscript
index fb19ef5e3db..22f73cd893a 100644
--- a/nvdaHelper/archBuild_sconscript
+++ b/nvdaHelper/archBuild_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2006-2026 NV Access Limited
 # This file may be used under the terms of the GNU General Public License, version 2 or later.
@@ -82,9 +83,7 @@ isNVDACoreArch = (
 	or (PYTHON_PLATFORM == "win-arm64" and TARGET_ARCH == "arm64")
 )
 isNVDAHelperLocalArch = isNVDACoreArch or (
-	PYTHON_PLATFORM == "win-amd64"
-	and TARGET_ARCH == "arm64"
-	and isArm64EC
+	PYTHON_PLATFORM == "win-amd64" and TARGET_ARCH == "arm64" and isArm64EC
 )
 debug = env["nvdaHelperDebugFlags"]
 release = env["release"]
@@ -100,7 +99,7 @@ env.Append(
 		# NOMINMAX: prevent minwindef.h min/max macro definition, which unexpectedly override developer
 		# expectations
 		"NOMINMAX",
-	]
+	],
 )
 
 env.Append(CXXFLAGS=["/EHsc"])
@@ -116,13 +115,13 @@ env.Append(
 		"/WX",
 		subsystem,
 		"/release",  # We always want a checksum in the header
-	]
+	],
 )
 env.Append(
 	ARFLAGS=[
 		"/WX",
 		subsystem,
-	]
+	],
 )
 if TARGET_ARCH == "x86_64":
 	env.Append(MIDLFLAGS="/x64")
@@ -149,7 +148,7 @@ if "RTC" in debug:
 # We always want debug symbols
 env.Append(PDB="${TARGET}.pdb")
 env.Append(
-	LINKFLAGS="/OPT:REF"
+	LINKFLAGS="/OPT:REF",
 )  # having symbols usually turns this off but we have no need for unused symbols
 
 env.Append(
@@ -160,7 +159,7 @@ env.Append(
 		# It will output a list of the include files.
 		# The option also displays nested include files, that is, the files
 		# included by the files that you include.
-	]
+	],
 )
 
 if isArm64EC:
@@ -181,7 +180,7 @@ thirdPartyEnv = env.Clone()
 env.Append(
 	CCFLAGS=[
 		"/W3",  # warning level 3
-	]
+	],
 )
 if "analyze" in debug:
 	env.Append(CCFLAGS=["/analyze"])
@@ -195,7 +194,7 @@ else:
 	env.Append(
 		CCFLAGS=[
 			"/WX",  # warnings as error, don't do this with analyze, the build stops too early
-		]
+		],
 	)
 
 Export("thirdPartyEnv")
@@ -266,7 +265,7 @@ if not isNVDAHelperLocalArch:
 if isNVDACoreArch:
 	sonicLib = thirdPartyEnv.SConscript("sonic/sconscript")
 	Export("sonicLib")
-	env.Install(sourceDir.Dir('synthDrivers'), sonicLib)
+	env.Install(sourceDir.Dir("synthDrivers"), sonicLib)
 	thirdPartyEnv.SConscript("espeak/sconscript")
 	thirdPartyEnv.SConscript("liblouis/sconscript")
 	thirdPartyEnv.SConscript("javaAccessBridge/sconscript")
@@ -275,4 +274,4 @@ if isNVDACoreArch:
 if TARGET_ARCH == "x86":
 	sonicLib = thirdPartyEnv.SConscript("sonic/sconscript")
 	Export("sonicLib")
-	env.Install(sourceDir.Dir('_synthDrivers32'), sonicLib)
+	env.Install(sourceDir.Dir("_synthDrivers32"), sonicLib)
diff --git a/nvdaHelper/client/sconscript b/nvdaHelper/client/sconscript
index 80aebba435e..c4378fffa85 100644
--- a/nvdaHelper/client/sconscript
+++ b/nvdaHelper/client/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,7 @@
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 winIPCUtilsObj = env.Object("./winIPCUtils", "../common/winIPCUtils.cpp")
diff --git a/nvdaHelper/detours/sconscript b/nvdaHelper/detours/sconscript
index fde5021feab..d0f0406c3b0 100644
--- a/nvdaHelper/detours/sconscript
+++ b/nvdaHelper/detours/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 Import(["thirdPartyEnv"])
 
 import typing  # noqa: E402
diff --git a/nvdaHelper/espeak/sconscript b/nvdaHelper/espeak/sconscript
index 6ef1b0637b9..bfa910408e2 100644
--- a/nvdaHelper/espeak/sconscript
+++ b/nvdaHelper/espeak/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # This file is covered by the GNU General Public License.
 # See the file COPYING for more details.
@@ -21,7 +22,7 @@ Import(
 		"thirdPartyEnv",
 		"sourceDir",
 		"sonicLib",
-	]
+	],
 )
 
 freeLibrary = ctypes.windll.kernel32.FreeLibrary
@@ -29,13 +30,13 @@ freeLibrary.argtypes = (ctypes.wintypes.HANDLE,)
 DLL_DIRECTORY_COOKIE = ctypes.c_void_p
 AddDllDirectory = ctypes.windll.kernel32.AddDllDirectory
 AddDllDirectory.argtypes = (ctypes.wintypes.LPCWSTR,)
-AddDllDirectory.restype = DLL_DIRECTORY_COOKIE 
+AddDllDirectory.restype = DLL_DIRECTORY_COOKIE
 
 # Add the directory of the sonic dll to our DLL search path
 # So that eSpeak.dll cna find it when being loaded to compile dictionaries etc.
 sonicDllDir = sonicLib[0].get_dir().abspath
 AddDllDirectory(sonicDllDir)
- 
+
 
 class AutoFreeCDLL(ctypes.CDLL):
 	def __del__(self):
@@ -127,7 +128,7 @@ env.Append(
 		"/DUSE_SPEECHPLAYER=1",
 		"/DUSE_KLATT=1",
 		"/DUSE_LIBSONIC=1",
-	]
+	],
 )
 
 env.Append(
@@ -138,7 +139,7 @@ env.Append(
 		espeakSrcDir.Dir("speechPlayer/include"),
 		sonicSrcDir,
 		espeakSrcDir.Dir("ucd-tools/src/include"),
-	]
+	],
 )
 
 
@@ -148,7 +149,7 @@ def espeak_compilePhonemeData_buildEmitter(target, source, env):
 		[
 			[Dir(topDir).File(f) for f in files if f not in phSourceIgnores]
 			for topDir, subdirs, files in os.walk(source[0].abspath)
-		]
+		],
 	)
 	sources = env.Flatten([phSources])
 	targets = [
@@ -1046,13 +1047,14 @@ def espeak_compileDict_buildAction(
 				f"Failed to compile dictionary: '{target}'"
 				f"\n rulesPath: {rulesPathEncoded}"
 				f"\n language: '{lang}'"
-				f"\n result: {espeak_ng_STATUS(compileDictResult)!s}"
+				f"\n result: {espeak_ng_STATUS(compileDictResult)!s}",
 			)
 			return ACTION_FAILURE
 	finally:
 		espeak.espeak_Terminate()
 	return ACTION_SUCCESS
 
+
 espeakLib = env.SharedLibrary(
 	target="espeak",
 	srcdir=espeakSrcDir.Dir("libespeak-ng").abspath,
@@ -1112,7 +1114,7 @@ espeakLib = env.SharedLibrary(
 		# com\ttsengine.cpp
 		# We do not use the ASYNC compile option in espeak.
 	],
-	LIBS=["advapi32", sonicLib[2]] ,
+	LIBS=["advapi32", sonicLib[2]],
 	LIBPATH=".",
 )
 
@@ -1131,7 +1133,8 @@ for i in phonemeData:
 env.AddPreAction(espeakLib, env.Action(cleanFiles_preBuildAction))
 # Move any extra dictionaries into dictsource for compilation
 env.Install(
-	espeakRepo.Dir("dictsource"), env.Glob(os.path.join(espeakRepo.abspath, "dictsource", "extra", "*_*"))
+	espeakRepo.Dir("dictsource"),
+	env.Glob(os.path.join(espeakRepo.abspath, "dictsource", "extra", "*_*")),
 )
 
 excludeLangs: typing.List[str] = []
@@ -1160,7 +1163,8 @@ for dictFileName, (langCode, inputFiles) in espeakDictionaryCompileList.items():
 	# Dictionaries can not be compiled in parallel, force SCons not to do this
 	env.SideEffect("_espeak_compileDict", dictFile)
 	env.InstallAs(  # Install files to the "synthDrivers/espeak-ng-data/" dir.
-		os.path.join(synthDriversDir.Dir("espeak-ng-data").abspath, dictFileName), dictFile
+		os.path.join(synthDriversDir.Dir("espeak-ng-data").abspath, dictFileName),
+		dictFile,
 	)
 
 env.Install(synthDriversDir, espeakLib)
@@ -1172,5 +1176,6 @@ espeakDataSource = espeakRepo.Dir("espeak-ng-data")
 # also install the lang and voices/!v directories. Exclude the voices/mb directory since we are not using mbrola.
 env.RecursiveInstall(targetEspeakDataDir.Dir("lang"), espeakDataSource.Dir("lang").abspath)
 env.RecursiveInstall(
-	targetEspeakDataDir.Dir("voices").Dir("!v"), espeakDataSource.Dir("voices").Dir("!v").abspath
+	targetEspeakDataDir.Dir("voices").Dir("!v"),
+	espeakDataSource.Dir("voices").Dir("!v").abspath,
 )
diff --git a/nvdaHelper/ia2_sconscript b/nvdaHelper/ia2_sconscript
index ee734962a04..90ea1f69515 100644
--- a/nvdaHelper/ia2_sconscript
+++ b/nvdaHelper/ia2_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
diff --git a/nvdaHelper/javaAccessBridge/sconscript b/nvdaHelper/javaAccessBridge/sconscript
index 0c0ed22bfb7..9c66c4be373 100644
--- a/nvdaHelper/javaAccessBridge/sconscript
+++ b/nvdaHelper/javaAccessBridge/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2019-2025 NV Access Limited, Leonard de Ruijter
 # This file may be used under the terms of the GNU General Public License, version 2 or later, as modified by the NVDA license.
@@ -7,7 +8,7 @@ Import(
 	[
 		"thirdPartyEnv",
 		"sourceDir",
-	]
+	],
 )
 
 env: Environment = thirdPartyEnv
@@ -23,6 +24,7 @@ match TARGET_ARCH:
 		jabDllName = None
 if jabDllName:
 	env.Command(
-		sourceDir.File("windowsaccessbridge.dll"), env.Dir("#include/javaAccessBridge32").File(jabDllName), Copy("$TARGET", "$SOURCE")
+		sourceDir.File("windowsaccessbridge.dll"),
+		env.Dir("#include/javaAccessBridge32").File(jabDllName),
+		Copy("$TARGET", "$SOURCE"),
 	)
-
diff --git a/nvdaHelper/liblouis/sconscript b/nvdaHelper/liblouis/sconscript
index d2704b2bc1d..c98d4900e66 100644
--- a/nvdaHelper/liblouis/sconscript
+++ b/nvdaHelper/liblouis/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2011-2025 NV Access Limited, Joseph Lee, Babbage B.V., Leonard de Ruijter
 # This file may be used under the terms of the GNU General Public License, version 2 or later, as modified by the NVDA license.
@@ -15,7 +16,7 @@ Import(
 	[
 		"thirdPartyEnv",
 		"sourceDir",
-	]
+	],
 )
 sourceDir: Base = sourceDir
 thirdPartyEnv: Environment = thirdPartyEnv
@@ -29,7 +30,7 @@ unitTestTablesDir = env.Dir("#tests/unit/brailleTables")
 signExec = env["signExec"] if (bool(env["certFile"]) ^ bool(env["apiSigningToken"])) else None
 
 RE_AC_INIT = re.compile(
-	r"^AC_INIT\(\[(?P<package>.*)\], \[(?P<version>.*)\], \[(?P<bugReport>.*)\], \[(?P<tarName>.*)\], \[(?P<url>.*)\]\)"
+	r"^AC_INIT\(\[(?P<package>.*)\], \[(?P<version>.*)\], \[(?P<bugReport>.*)\], \[(?P<tarName>.*)\], \[(?P<url>.*)\]\)",
 )
 
 
@@ -48,7 +49,7 @@ clangDirs = glob.glob(os.path.join(find_vc_pdir(env.get("MSVC_VERSION"), env), r
 if len(clangDirs) == 0:
 	raise RuntimeError(
 		"Could not find the Clang compiler. "
-		"Perhaps the C++ Clang tools for Windows component in visual Studio is not installed"
+		"Perhaps the C++ Clang tools for Windows component in visual Studio is not installed",
 	)
 env["CC"] = "clang-cl"
 env["M4"] = f'"{env.File("#miscdeps/tools/m4.exe")}"'
@@ -72,7 +73,7 @@ env.Append(
 		"WIDECHARS_ARE_UCS4",
 		# Tell liblouis.h that we're exporting liblouis dll functions, not importing them.
 		"_EXPORTING",
-	]
+	],
 )
 env.Prepend(CPPPATH=[".", louisSourceDir])
 
@@ -80,7 +81,9 @@ env.Prepend(CPPPATH=[".", louisSourceDir])
 env["CPPDEFINES"].remove("UNICODE")
 
 liblouisH = env.Substfile(
-	"liblouis.h", louisSourceDir.File("liblouis.h.in"), SUBST_DICT={"@WIDECHAR_TYPE@": "unsigned int"}
+	"liblouis.h",
+	louisSourceDir.File("liblouis.h.in"),
+	SUBST_DICT={"@WIDECHAR_TYPE@": "unsigned int"},
 )
 
 sourceFiles = [
diff --git a/nvdaHelper/local/sconscript b/nvdaHelper/local/sconscript
index ce3a618d416..d043948506e 100644
--- a/nvdaHelper/local/sconscript
+++ b/nvdaHelper/local/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -17,7 +18,7 @@ Import(
 		"env",
 		"detoursLib",
 		"apiHookObj",
-	]
+	],
 )
 
 winIPCUtilsObj = env.Object("./winIPCUtils", "../common/winIPCUtils.cpp")
diff --git a/nvdaHelper/localWin10/sconscript b/nvdaHelper/localWin10/sconscript
index bad1a590f49..7be2268f90d 100644
--- a/nvdaHelper/localWin10/sconscript
+++ b/nvdaHelper/localWin10/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvaccess.org/
diff --git a/nvdaHelper/remote/sconscript b/nvdaHelper/remote/sconscript
index a553d40d3bd..7b039e86f3e 100644
--- a/nvdaHelper/remote/sconscript
+++ b/nvdaHelper/remote/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -18,7 +19,7 @@ Import(
 		"ia2RPCStubs",
 		"detoursLib",
 		"apiHookObj",
-	]
+	],
 )
 
 winIPCUtilsObj = env.Object("./winIPCUtils", "../common/winIPCUtils.cpp")
diff --git a/nvdaHelper/remoteLoader/sconscript b/nvdaHelper/remoteLoader/sconscript
index 3bc427342f9..de3de067f04 100644
--- a/nvdaHelper/remoteLoader/sconscript
+++ b/nvdaHelper/remoteLoader/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
diff --git a/nvdaHelper/sonic/sconscript b/nvdaHelper/sonic/sconscript
index d7eae37d963..74483725574 100644
--- a/nvdaHelper/sonic/sconscript
+++ b/nvdaHelper/sonic/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # This file is covered by the GNU General Public License.
 # See the file COPYING for more details.
@@ -9,7 +10,7 @@ thirdPartyEnv: SCons.Environment.Environment
 Import(
 	[
 		"thirdPartyEnv",
-	]
+	],
 )
 
 sonicSrcDir = Dir("#include/sonic")
@@ -18,7 +19,7 @@ env: SCons.Environment.Environment = thirdPartyEnv.Clone()
 
 env.Append(CPPPATH=sonicSrcDir)
 
-sonicObj = env.Object("sonic.obj", sonicSrcDir.File('sonic.c'))
+sonicObj = env.Object("sonic.obj", sonicSrcDir.File("sonic.c"))
 
 sonicLib = env.SharedLibrary(
 	target="sonic",
diff --git a/nvdaHelper/uwp/sconscript b/nvdaHelper/uwp/sconscript
index 2639e4e8d13..338cec8aee8 100644
--- a/nvdaHelper/uwp/sconscript
+++ b/nvdaHelper/uwp/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2017-2025 NV Access Limited, Leonard de Ruijter
 # This file may be used under the terms of the GNU General Public License, version 2 or later, as modified by the NVDA license.
@@ -12,7 +13,7 @@ Import(
 	[
 		"thirdPartyEnv",
 		"sourceDir",
-	]
+	],
 )
 
 env: Environment = thirdPartyEnv
@@ -32,11 +33,11 @@ vcRedistDirs = glob.glob(
 		f"{msvc[:2]}*",
 		targetArch if (targetArch := env["TARGET_ARCH"]) != "x86_64" else "x64",
 		f"Microsoft.VC{msvc.replace('.', '')}.CRT",
-	)
+	),
 )
 if len(vcRedistDirs) == 0:
 	raise RuntimeError(
-		"Could not locate vc redistributables. Perhaps the Universal Windows Platform component in visual Studio is not installed"
+		"Could not locate vc redistributables. Perhaps the Universal Windows Platform component in visual Studio is not installed",
 	)
 vcRedistDirs.sort(reverse=True)
 vcRedistLibs = ["msvcp140.dll", "vccorlib140.dll", "vcruntime140.dll", "vcruntime140_1.dll"]
@@ -51,5 +52,5 @@ for fn in vcRedistLibs:
 			break
 		else:
 			raise RuntimeError(
-				f"Could not locate {fn}. Perhaps the Universal Windows Platform component in visual Studio is not installed"
+				f"Could not locate {fn}. Perhaps the Universal Windows Platform component in visual Studio is not installed",
 			)
diff --git a/nvdaHelper/vbufBackends/adobeAcrobat/sconscript b/nvdaHelper/vbufBackends/adobeAcrobat/sconscript
index d667c877e83..719062d7ff4 100644
--- a/nvdaHelper/vbufBackends/adobeAcrobat/sconscript
+++ b/nvdaHelper/vbufBackends/adobeAcrobat/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -16,7 +17,7 @@ Import(
 	[
 		"env",
 		"acrobatAccessRPCStubs",
-	]
+	],
 )
 
 adobeAcrobatBackendLib = [
diff --git a/nvdaHelper/vbufBackends/gecko_ia2/sconscript b/nvdaHelper/vbufBackends/gecko_ia2/sconscript
index 1809c3237c5..2ceac17759c 100644
--- a/nvdaHelper/vbufBackends/gecko_ia2/sconscript
+++ b/nvdaHelper/vbufBackends/gecko_ia2/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,7 @@
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 geckoBackendLib = env.Object("gecko_ia2.cpp")
diff --git a/nvdaHelper/vbufBackends/lotusNotesRichText/sconscript b/nvdaHelper/vbufBackends/lotusNotesRichText/sconscript
index 054a32fb1b6..d95b11ab833 100644
--- a/nvdaHelper/vbufBackends/lotusNotesRichText/sconscript
+++ b/nvdaHelper/vbufBackends/lotusNotesRichText/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,7 @@
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 lotusNotesRichTextBackendLib = env.Object("lotusNotesRichText.cpp")
diff --git a/nvdaHelper/vbufBackends/mshtml/sconscript b/nvdaHelper/vbufBackends/mshtml/sconscript
index b947852742e..a6f9bc5d212 100644
--- a/nvdaHelper/vbufBackends/mshtml/sconscript
+++ b/nvdaHelper/vbufBackends/mshtml/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,7 @@
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 mshtmlBackendLib = [
diff --git a/nvdaHelper/vbufBackends/webKit/sconscript b/nvdaHelper/vbufBackends/webKit/sconscript
index c0818656a01..c95653c6885 100644
--- a/nvdaHelper/vbufBackends/webKit/sconscript
+++ b/nvdaHelper/vbufBackends/webKit/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -15,7 +16,7 @@
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 webKitBackendLib = env.Object("webKit.cpp")
diff --git a/nvdaHelper/vbufBase/sconscript b/nvdaHelper/vbufBase/sconscript
index 9c5015dd75d..467dfa3c2af 100644
--- a/nvdaHelper/vbufBase/sconscript
+++ b/nvdaHelper/vbufBase/sconscript
@@ -1,7 +1,8 @@
+#!/usr/bin/env python3
 Import(
 	[
 		"env",
-	]
+	],
 )
 
 vbufBaseObjs = [
diff --git a/projectDocs/dev/developerGuide/sconscript b/projectDocs/dev/developerGuide/sconscript
index 348f3a99308..c3f12b12d78 100644
--- a/projectDocs/dev/developerGuide/sconscript
+++ b/projectDocs/dev/developerGuide/sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2019-2026 NV Access Limited
 # This file may be used under the terms of the GNU General Public License, version 2 or later, as modified by the NVDA license.
@@ -27,7 +28,9 @@ htmlFile = env.Command(
 	action=[f'@"{sys.executable}" source/md2html.py -t developerGuide "$SOURCE" "$TARGET"'],
 )
 devGuide = env.Command(
-	target=userDocsDir.File("developerGuide.html"), source=htmlFile, action=Move("$TARGET", "$SOURCE")
+	target=userDocsDir.File("developerGuide.html"),
+	source=htmlFile,
+	action=Move("$TARGET", "$SOURCE"),
 )
 env.Alias("developerGuide", devGuide)
 
@@ -71,7 +74,7 @@ sphinxAPIDocs = env.Command(
 			"$TARGET",
 			"$SOURCE",  # Module sources
 		]
-		+ [f"{sourceDir}\\{f}" for f in ignorePaths]
+		+ [f"{sourceDir}\\{f}" for f in ignorePaths],
 	],
 )
 sphinxHtml = env.Command(
@@ -86,7 +89,7 @@ sphinxHtml = env.Command(
 			"html",
 			"projectDocs/dev/developerGuide",  # Source directory
 			"$TARGET",  # Build directory
-		]
+		],
 	],
 )
 devDocs_nvda = env.Command(devDocsOutputDir.Dir("NVDA"), sphinxHtml, Move("$TARGET", "$SOURCE"))
diff --git a/sconstruct b/sconstruct
index e904a03f4f9..201bfa5085a 100755
--- a/sconstruct
+++ b/sconstruct
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2010-2025 NV Access Limited, James Teh, Michael Curran, Peter Vágner, Joseph Lee,
 # Reef Turner, Babbage B.V., Leonard de Ruijter, Łukasz Golonka, Accessolutions, Julien Cochuyt,
@@ -5,15 +6,12 @@
 # This file may be used under the terms of the GNU General Public License, version 2 or later.
 # For more details see: https://www.gnu.org/licenses/gpl-2.0.html
 
-import copy
 import multiprocessing
 import os
-import shutil
 import platform
 import sys
 from pathlib import Path
 
-from SCons.Errors import UserError
 
 # Ensure we are inside the Python virtual environment, and that it is started with uv
 virtualEnv = os.getenv("VIRTUAL_ENV")
@@ -21,13 +19,12 @@ uv = os.getenv("uv")
 if not virtualEnv or not uv or Path.cwd() != Path(virtualEnv).parent:
 	print(
 		"Error: SCons was started outside NVDA's build system Python virtual environment.\n"
-		"SCons must be executed using scons.bat in the root of this repository."
+		"SCons must be executed using scons.bat in the root of this repository.",
 	)
 	sys.exit(1)
 
 import time  # noqa: E402
 import importlib.util  # noqa: E402
-import winreg  # noqa: E402
 
 
 def recursiveCopy(env, targetDir, sourceDir):
@@ -77,7 +74,7 @@ vars.Add(
 		"The certificate file with which to sign executables",
 		"",
 		lambda key, val, env: not val or PathVariable.PathIsFile(key, val, env),
-	)
+	),
 )
 vars.Add("certPassword", "The password for the private key in the signing certificate", "")
 vars.Add(
@@ -92,7 +89,7 @@ vars.Add(
 		"The directory where the final built archives and such will be placed",
 		"output",
 		PathVariable.PathIsDirCreate,
-	)
+	),
 )
 vars.Add(
 	ListVariable(
@@ -100,7 +97,7 @@ vars.Add(
 		"a list of debugging features you require",
 		"none",
 		["debugCRT", "RTC", "analyze"],
-	)
+	),
 )
 vars.Add(
 	EnumVariable(
@@ -108,7 +105,7 @@ vars.Add(
 		"The level of logging you wish to see, lower is more verbose",
 		"15",
 		allowed_values=[str(x) for x in range(60)],
-	)
+	),
 )
 
 # Base environment for this and sub sconscripts
@@ -268,7 +265,9 @@ projectRCSubstDict = {
 resFile = env.RES(
 	target="build/nvda.res",
 	source=env.Substfile(
-		target="build/nvda.rc", source="nvdaHelper/nvda.rc.subst", SUBST_DICT=projectRCSubstDict
+		target="build/nvda.rc",
+		source="nvdaHelper/nvda.rc.subst",
+		SUBST_DICT=projectRCSubstDict,
 	),
 )
 env32["projectResFile"] = resFile
@@ -310,7 +309,11 @@ envArm64.SConscript(
 )
 envArm64EC.SConscript(
 	"nvdaHelper/archBuild_sconscript",
-	exports={"env": envArm64EC, "clientInstallDir": clientDir.Dir("arm64ec"), "libInstallDir": sourceLibDirArm64EC},
+	exports={
+		"env": envArm64EC,
+		"clientInstallDir": clientDir.Dir("arm64ec"),
+		"libInstallDir": sourceLibDirArm64EC,
+	},
 	variant_dir="build/arm64ec",
 )
 
@@ -390,20 +393,22 @@ def NVDADistGenerator(target, source, env, for_signature):
 	updateVersionType = env["updateVersionType"] or None
 	# Any '\n' characters written are translated to the system default line separator, os.linesep.
 	action = [
-		lambda target, source, env: open(buildVersionFn, "w", encoding="utf-8").write(
-			"version = {version!r}\n"
-			"publisher = {publisher!r}\n"
-			"updateVersionType = {updateVersionType!r}\n"
-			"version_build = {version_build!r}\n".format(
-				version=version,
-				publisher=publisher,
-				updateVersionType=updateVersionType,
-				version_build=version_build,
+		lambda target, source, env: (
+			open(buildVersionFn, "w", encoding="utf-8").write(
+				"version = {version!r}\n"
+				"publisher = {publisher!r}\n"
+				"updateVersionType = {updateVersionType!r}\n"
+				"version_build = {version_build!r}\n".format(
+					version=version,
+					publisher=publisher,
+					updateVersionType=updateVersionType,
+					version_build=version_build,
+				),
 			)
-		)
-		# In Python 3 write returns the number of characters written,
-		# which scons treats as an error code.
-		and None
+			# In Python 3 write returns the number of characters written,
+			# which scons treats as an error code.
+			and None
+		),
 	]
 
 	buildCmd = ["cd", source[0].path, "&&", sys.executable]
@@ -428,9 +433,9 @@ def NVDADistGenerator(target, source, env, for_signature):
 		for prog in executablesToSign:
 			path = os.path.join(target[0].abspath, prog)
 			action.append(
-				lambda target, source, env, pathByVal=path: env["signExec"](
-					[File(pathByVal)], source, env
-				) if os.path.isfile(pathByVal) else None
+				lambda target, source, env, pathByVal=path: (
+					env["signExec"]([File(pathByVal)], source, env) if os.path.isfile(pathByVal) else None
+				),
 			)
 
 	action.extend((Delete(buildVersionFn), Delete(importlib.util.cache_from_source(buildVersionFn))))
@@ -506,7 +511,7 @@ uninstGen = env.Command(
 			"/DUNINSTEXE=%s" % uninstFile.abspath,
 			"/DINSTEXE=${TARGET.abspath}",
 			"$SOURCE",
-		]
+		],
 	],
 )
 uninstaller = env.Command(uninstFile, uninstGen, [uninstGen])
@@ -514,7 +519,8 @@ if certFile or apiSigningToken:
 	env.AddPostAction(uninstaller, [env["signExec"]])
 
 devDocTargets = env.SConscript(
-	"projectDocs/dev/developerGuide/sconscript", exports=["env", "outputDir", "sourceDir", "userDocsDir"]
+	"projectDocs/dev/developerGuide/sconscript",
+	exports=["env", "outputDir", "sourceDir", "userDocsDir"],
 )
 dist = env.NVDADist("dist", [sourceDir, userDocsDir], uiAccess=bool(certFile) or bool(apiSigningToken))
 env.Depends(dist, uninstaller)
@@ -543,7 +549,7 @@ launcher = env.Command(
 			"/DNVDADistDir=${SOURCES[1].abspath}",
 			"/DLAUNCHEREXE=${TARGET.abspath}",
 			"$SOURCE",
-		]
+		],
 	],
 )
 if certFile or apiSigningToken:
@@ -551,12 +557,16 @@ if certFile or apiSigningToken:
 env.Alias("launcher", launcher)
 
 clientArchive = env.ZipArchive(
-	outputDir.File("%s_controllerClient.zip" % outFilePrefix), clientDir, relativeTo=clientDir
+	outputDir.File("%s_controllerClient.zip" % outFilePrefix),
+	clientDir,
+	relativeTo=clientDir,
 )
 env.Alias("client", clientArchive)
 
 outputStylesFile = env.Command(
-	outputDir.File("styles.css"), userDocsDir.File("styles.css"), Copy("$TARGET", "$SOURCE")
+	outputDir.File("styles.css"),
+	userDocsDir.File("styles.css"),
+	Copy("$TARGET", "$SOURCE"),
 )
 outputHeadingStylesFile = env.Command(
 	outputDir.File("numberedHeadings.css"),
@@ -573,13 +583,17 @@ env.Depends(changesFile, outputStylesFile)
 env.Alias("changes", changesFile)
 
 userGuideFile = env.Command(
-	outputDir.File("userGuide.html"), userDocsDir.File("en/userGuide.html"), Copy("$TARGET", "$SOURCE")
+	outputDir.File("userGuide.html"),
+	userDocsDir.File("en/userGuide.html"),
+	Copy("$TARGET", "$SOURCE"),
 )
 env.Depends(userGuideFile, outputStylesFile)
 env.Alias("userGuide", userGuideFile)
 
 keyCommandsFile = env.Command(
-	outputDir.File("keyCommands.html"), userDocsDir.File("en/keyCommands.html"), Copy("$TARGET", "$SOURCE")
+	outputDir.File("keyCommands.html"),
+	userDocsDir.File("en/keyCommands.html"),
+	Copy("$TARGET", "$SOURCE"),
 )
 env.Depends(keyCommandsFile, outputStylesFile)
 env.Depends(keyCommandsFile, userGuideFile)
@@ -620,8 +634,8 @@ def makePot(target, source, env):
 					"--language=python",
 					# Too many files to list on commandline, use a file list instead.
 					f"--files-from={potSourceFileList.abspath}",
-				]
-			]
+				],
+			],
 		)
 		!= 0
 	):
@@ -708,22 +722,22 @@ synthDriverHost32Runtime = env.Command(
 	source="#runtime-builders/synthDriverHost32/setup-runtime.py",
 	chdir=Dir("#runtime-builders/synthDriverHost32"),
 	action=[
-		  [
-			  "uv",
-			  "run",
-			  "-v",
-			  "--no-active",
-			  "--directory",
-			  ".",
-			  "python",
-			  "setup-runtime.py",
-			  "--dest-dir",
-			  "dist",
-			  "--version",
-			  version,
-			  "--publisher",
-			  publisher,
-		  ],
+		[
+			"uv",
+			"run",
+			"-v",
+			"--no-active",
+			"--directory",
+			".",
+			"python",
+			"setup-runtime.py",
+			"--dest-dir",
+			"dist",
+			"--version",
+			version,
+			"--publisher",
+			publisher,
+		],
 		r"rmdir /s /q ..\..\source\lib\x86\synthDriverHost-runtime || exit 0",
 		r"xcopy /e /i /y dist ..\..\source\lib\x86\synthDriverHost-runtime",
 	],
@@ -734,9 +748,25 @@ env.Alias("synthDriverHost32Runtime", synthDriverHost32Runtime)
 
 # Copy sapi5 and sonic Python files to the _synthDrivers32 directory
 # As they require no changes, but need to be in an isolated directory for 32 bit.
-env.Command(sourceDir.File('_synthDrivers32/_sonic.py'), sourceDir.File('synthDrivers/_sonic.py'), Copy("$TARGET", "$SOURCE"))
-env.Command(sourceDir.File('_synthDrivers32/_sapi5.py'), sourceDir.File('synthDrivers/sapi5.py'), Copy("$TARGET", "$SOURCE"))
+env.Command(
+	sourceDir.File("_synthDrivers32/_sonic.py"),
+	sourceDir.File("synthDrivers/_sonic.py"),
+	Copy("$TARGET", "$SOURCE"),
+)
+env.Command(
+	sourceDir.File("_synthDrivers32/_sapi5.py"),
+	sourceDir.File("synthDrivers/sapi5.py"),
+	Copy("$TARGET", "$SOURCE"),
+)
 
 # Parts of the speech package are quired by the 32 bit synthDriver host tunrime
-env.Command(sourceDir.File('_bridge/runtimes/synthDriverHost/speech/commands.py'), sourceDir.File('speech/commands.py'), Copy("$TARGET", "$SOURCE"))
-env.Command(sourceDir.File('_bridge/runtimes/synthDriverHost/speech/types.py'), sourceDir.File('speech/types.py'), Copy("$TARGET", "$SOURCE"))
+env.Command(
+	sourceDir.File("_bridge/runtimes/synthDriverHost/speech/commands.py"),
+	sourceDir.File("speech/commands.py"),
+	Copy("$TARGET", "$SOURCE"),
+)
+env.Command(
+	sourceDir.File("_bridge/runtimes/synthDriverHost/speech/types.py"),
+	sourceDir.File("speech/types.py"),
+	Copy("$TARGET", "$SOURCE"),
+)
diff --git a/source/_bridge/runtimes/synthDriverHost/main.pyw b/source/_bridge/runtimes/synthDriverHost/main.pyw
index 5a10acdf5b5..ddabb48f192 100644
--- a/source/_bridge/runtimes/synthDriverHost/main.pyw
+++ b/source/_bridge/runtimes/synthDriverHost/main.pyw
@@ -12,6 +12,8 @@ import tempfile
 from winBindings.kernel32 import GetCurrentProcessId
 
 oldRecordFactory = logging.getLogRecordFactory()
+
+
 def recordFactory(*args, **kwargs):
 	record = oldRecordFactory(*args, **kwargs)
 	frame = inspect.currentframe()
@@ -27,6 +29,8 @@ def recordFactory(*args, **kwargs):
 		# co_qualname may be unavailable for some frames; in that case, keep the default record.name
 		pass
 	return record
+
+
 logging.setLogRecordFactory(recordFactory)
 
 exeName = os.path.splitext(os.path.basename(sys.executable))[0]
@@ -36,7 +40,7 @@ logging.basicConfig(
 	filename=logPath,
 	filemode="w",
 	level=logging.DEBUG,
-	format="%(levelname)s - %(module)s.%(name)s (%(asctime)s):\n%(message)s"
+	format="%(levelname)s - %(module)s.%(name)s (%(asctime)s):\n%(message)s",
 )
 log = logging.getLogger(exeName)
 # No comtypes debug logging
@@ -46,6 +50,7 @@ log.info(f"Logging initialized, log file: {logPath}")
 try:
 	gettext.install("nvda", names=["pgettext", "npgettext", "ngettext"])
 	import core
+
 	core.main()
 except Exception:
 	log.exception("Unhandled exception")
diff --git a/source/comInterfaces_sconscript b/source/comInterfaces_sconscript
index 58f2b4240bc..92ce5c7a193 100755
--- a/source/comInterfaces_sconscript
+++ b/source/comInterfaces_sconscript
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 ###
 # This file is a part of the NVDA project.
 # URL: http://www.nvda-project.org/
@@ -101,7 +102,8 @@ else:
 	with open(path, "r") as interfaceFile:
 		fileContent = interfaceFile.read()
 		fileContent = importPattern.sub(
-			codeReplacer(importTemplate, indentedGroups=("importList",)), fileContent
+			codeReplacer(importTemplate, indentedGroups=("importList",)),
+			fileContent,
 		)
 
 	with open(path, "w") as interfaceFile: