diff --git a/Downterm/Downterm.xcodeproj/project.pbxproj b/Downterm/Downterm.xcodeproj/project.pbxproj
index 93e17ed..52acea9 100644
--- a/Downterm/Downterm.xcodeproj/project.pbxproj
+++ b/Downterm/Downterm.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 77;
+	objectVersion = 63;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -206,7 +206,6 @@
 			packageReferences = (
 				80F03B77566BF59C9941EAD4 /* XCRemoteSwiftPackageReference "SwiftTerm" */,
 			);
-			preferredProjectObjectVersion = 77;
 			projectDirPath = "";
 			projectRoot = "";
 			targets = (
@@ -251,8 +250,11 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_USE_OPTIMIZATION_PROFILE = YES;
 				CODE_SIGN_ENTITLEMENTS = Downterm/Resources/Downterm.entitlements;
+				"CODE_SIGN_IDENTITY[sdk=macosx*]" = "Apple Development";
 				COMBINE_HIDPI_IMAGES = YES;
+				"DEVELOPMENT_TEAM[sdk=macosx*]" = G698BP272N;
 				INFOPLIST_FILE = Downterm/Resources/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
@@ -332,8 +334,11 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CLANG_USE_OPTIMIZATION_PROFILE = YES;
 				CODE_SIGN_ENTITLEMENTS = Downterm/Resources/Downterm.entitlements;
+				"CODE_SIGN_IDENTITY[sdk=macosx*]" = "Apple Development";
 				COMBINE_HIDPI_IMAGES = YES;
+				"DEVELOPMENT_TEAM[sdk=macosx*]" = G698BP272N;
 				INFOPLIST_FILE = Downterm/Resources/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
diff --git a/Downterm/Downterm.xcodeproj/project.xcworkspace/xcuserdata/harvmaster.xcuserdatad/UserInterfaceState.xcuserstate b/Downterm/Downterm.xcodeproj/project.xcworkspace/xcuserdata/harvmaster.xcuserdatad/UserInterfaceState.xcuserstate
index 3a96b67..de94b2f 100644
Binary files a/Downterm/Downterm.xcodeproj/project.xcworkspace/xcuserdata/harvmaster.xcuserdatad/UserInterfaceState.xcuserstate and b/Downterm/Downterm.xcodeproj/project.xcworkspace/xcuserdata/harvmaster.xcuserdatad/UserInterfaceState.xcuserstate differ
diff --git a/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Downterm.xcscheme b/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Downterm.xcscheme
new file mode 100644
index 0000000..6e80252
--- /dev/null
+++ b/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Downterm.xcscheme
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "2620"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+               BuildableName = "Downterm.app"
+               BlueprintName = "Downterm"
+               ReferencedContainer = "container:Downterm.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+            BuildableName = "Downterm.app"
+            BlueprintName = "Downterm"
+            ReferencedContainer = "container:Downterm.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+            BuildableName = "Downterm.app"
+            BlueprintName = "Downterm"
+            ReferencedContainer = "container:Downterm.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Release-Downterm.xcscheme b/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Release-Downterm.xcscheme
new file mode 100644
index 0000000..a329a7f
--- /dev/null
+++ b/Downterm/Downterm.xcodeproj/xcshareddata/xcschemes/Release-Downterm.xcscheme
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "2620"
+   version = "1.7">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES"
+      buildArchitectures = "Automatic">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+               BuildableName = "Downterm.app"
+               BlueprintName = "Downterm"
+               ReferencedContainer = "container:Downterm.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      shouldAutocreateTestPlan = "YES">
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Release"
+      selectedDebuggerIdentifier = ""
+      selectedLauncherIdentifier = "Xcode.IDEFoundation.Launcher.PosixSpawn"
+      launchStyle = "1"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+            BuildableName = "Downterm.app"
+            BlueprintName = "Downterm"
+            ReferencedContainer = "container:Downterm.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "1485207FA11756EC2DF4F08B"
+            BuildableName = "Downterm.app"
+            BlueprintName = "Downterm"
+            ReferencedContainer = "container:Downterm.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>
diff --git a/Downterm/Downterm.xcodeproj/xcuserdata/harvmaster.xcuserdatad/xcschemes/xcschememanagement.plist b/Downterm/Downterm.xcodeproj/xcuserdata/harvmaster.xcuserdatad/xcschemes/xcschememanagement.plist
index 14a7c50..b64e539 100644
--- a/Downterm/Downterm.xcodeproj/xcuserdata/harvmaster.xcuserdatad/xcschemes/xcschememanagement.plist
+++ b/Downterm/Downterm.xcodeproj/xcuserdata/harvmaster.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -9,6 +9,19 @@
 			<key>orderHint</key>
 			<integer>0</integer>
 		</dict>
+		<key>Release-Downterm.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>1</integer>
+		</dict>
+	</dict>
+	<key>SuppressBuildableAutocreation</key>
+	<dict>
+		<key>1485207FA11756EC2DF4F08B</key>
+		<dict>
+			<key>primary</key>
+			<true/>
+		</dict>
 	</dict>
 </dict>
 </plist>
diff --git a/Downterm/Downterm/Models/TerminalSession.swift b/Downterm/Downterm/Models/TerminalSession.swift
index 483495e..5bdbfac 100644
--- a/Downterm/Downterm/Models/TerminalSession.swift
+++ b/Downterm/Downterm/Models/TerminalSession.swift
@@ -36,11 +36,20 @@ class TerminalSession: NSObject, ObservableObject, LocalProcessDelegate, Termina
 
     private func startShell() {
         let shellPath = resolveShell()
+        let shellName = (shellPath as NSString).lastPathComponent
+        let loginExecName = "-\(shellName)"
+
         FileManager.default.changeCurrentDirectoryPath(NSHomeDirectory())
         let proc = LocalProcess(delegate: self)
-        proc.startProcess(executable: shellPath)
+        // Launch as a login shell so user startup files initialize PATH/tools.
+        proc.startProcess(
+            executable: shellPath,
+            args: ["-l"],
+            environment: nil,
+            execName: loginExecName
+        )
         process = proc
-        title = (shellPath as NSString).lastPathComponent
+        title = shellName
     }
 
     private func resolveShell() -> String {