diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 000000000..2e7a1396a
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,28 @@
+# term244 作業メモ
+
+term244 は Ghostty(ターミナルエミュレータ)のフォーク。アプリ名を term244 にリブランドし、
+HTML/Markdown レンダリングタブの追加や WSL/Windows 対応を進めている。
+
+## 知見ログ
+
+### 2026-05-22: macOS ビルドで Metal Toolchain 不足
+
+- **何が起きたか**: `zig build` の `metal Ghostty (Ghostty.ir)` ステップで
+  `error: cannot execute tool 'metal' due to missing Metal Toolchain` が発生。
+- **なぜ起きたか**: Xcode 26 では Metal Toolchain が標準同梱されず、別ダウンロード
+  コンポーネントになった。Xcode 本体だけでは `metal` コンパイラが無い。
+- **どう直したか**: `xcodebuild -downloadComponent MetalToolchain` で導入。
+  ビルドスクリプト(`/tmp/term244-build.sh`)に「`xcrun -sdk macosx metal --version`
+  で有無を確認し、無ければ自動 DL」する処理を組み込んだ。
+
+### 2026-05-22: リブランドの方針(軽いリブランド)
+
+- `ghostty` 文字列は terminfo(`xterm-ghostty`)・C API シンボル(`ghostty_*`)・
+  設定ディレクトリ(`~/.config/ghostty`)・GTK app id にも広く存在し、変えると
+  互換性が壊れる。そのため**ユーザーから見える名前だけ**を term244 に変更する。
+- 変更済み: `macos/Ghostty.xcodeproj/project.pbxproj`(PRODUCT_NAME / EXECUTABLE_NAME /
+  CFBundleDisplayName / PRODUCT_BUNDLE_IDENTIFIER = `com.term244.term244`)、
+  `Ghostty.xcscheme` の BuildableName、`src/build/GhosttyXcodebuild.zig` の
+  旧名ハードコード(`Ghostty.app` / `ghostty`)。
+- 据え置き: terminfo、C API、設定ディレクトリ、Xcode プロジェクト/スキームのファイル名・
+  ターゲット名(内部名のため)。
diff --git a/macos/Ghostty.xcodeproj/project.pbxproj b/macos/Ghostty.xcodeproj/project.pbxproj
index fb24d0813..dbf1a15de 100644
--- a/macos/Ghostty.xcodeproj/project.pbxproj
+++ b/macos/Ghostty.xcodeproj/project.pbxproj
@@ -86,7 +86,7 @@
 		A586167B2B7703CC009BDB1D /* fish */ = {isa = PBXFileReference; lastKnownFileType = folder; name = fish; path = "../zig-out/share/fish"; sourceTree = "<group>"; };
 		A5985CE52C33060F00C57AD3 /* man */ = {isa = PBXFileReference; lastKnownFileType = folder; name = man; path = "../zig-out/share/man"; sourceTree = "<group>"; };
 		A5A1F8842A489D6800D1E8BC /* terminfo */ = {isa = PBXFileReference; lastKnownFileType = folder; name = terminfo; path = "../zig-out/share/terminfo"; sourceTree = "<group>"; };
-		A5B30531299BEAAA0047F10C /* Ghostty.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Ghostty.app; sourceTree = BUILT_PRODUCTS_DIR; };
+		A5B30531299BEAAA0047F10C /* Ghostty.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = term244.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		A5B30538299BEAAB0047F10C /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		A5B3053D299BEAAB0047F10C /* Ghostty.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Ghostty.entitlements; sourceTree = "<group>"; };
 		A5D4499D2B53AE7B000F5B83 /* Ghostty-iOS.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = "Ghostty-iOS.app"; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -748,11 +748,11 @@
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
-				EXECUTABLE_NAME = ghostty;
+				EXECUTABLE_NAME = term244;
 				GCC_OPTIMIZATION_LEVEL = fast;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = "Ghostty-Info.plist";
-				INFOPLIST_KEY_CFBundleDisplayName = Ghostty;
+				INFOPLIST_KEY_CFBundleDisplayName = term244;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.developer-tools";
 				INFOPLIST_KEY_NSAppleEventsUsageDescription = "A program running within Ghostty would like to use AppleScript.";
 				INFOPLIST_KEY_NSAudioCaptureUsageDescription = "A program running within Ghostty would like to access your system's audio.";
@@ -779,8 +779,8 @@
 				MACOSX_DEPLOYMENT_TARGET = 13.0;
 				MARKETING_VERSION = 0.1;
 				"OTHER_LDFLAGS[arch=*]" = "-lstdc++";
-				PRODUCT_BUNDLE_IDENTIFIER = com.mitchellh.ghostty;
-				PRODUCT_NAME = "$(TARGET_NAME)";
+				PRODUCT_BUNDLE_IDENTIFIER = com.term244.term244;
+				PRODUCT_NAME = term244;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "Sources/App/macOS/ghostty-bridging-header.h";
 				SWIFT_VERSION = 5.0;
@@ -963,7 +963,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
 				SWIFT_VERSION = 5.0;
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Ghostty.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/ghostty";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/term244.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/term244";
 			};
 			name = Debug;
 		};
@@ -986,7 +986,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
 				SWIFT_VERSION = 5.0;
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Ghostty.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/ghostty";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/term244.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/term244";
 			};
 			name = Release;
 		};
@@ -1009,7 +1009,7 @@
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_UPCOMING_FEATURE_MEMBER_IMPORT_VISIBILITY = YES;
 				SWIFT_VERSION = 5.0;
-				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/Ghostty.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/ghostty";
+				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/term244.app/$(BUNDLE_EXECUTABLE_FOLDER_PATH)/term244";
 			};
 			name = ReleaseLocal;
 		};
@@ -1147,10 +1147,10 @@
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
-				EXECUTABLE_NAME = ghostty;
+				EXECUTABLE_NAME = term244;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = "Ghostty-Info.plist";
-				INFOPLIST_KEY_CFBundleDisplayName = "Ghostty[DEBUG]";
+				INFOPLIST_KEY_CFBundleDisplayName = "term244[DEBUG]";
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.developer-tools";
 				INFOPLIST_KEY_NSAppleEventsUsageDescription = "A program running within Ghostty would like to use AppleScript.";
 				INFOPLIST_KEY_NSBluetoothAlwaysUsageDescription = "A program running within Ghostty would like to use Bluetooth.";
@@ -1176,8 +1176,8 @@
 				MACOSX_DEPLOYMENT_TARGET = 13.0;
 				MARKETING_VERSION = 0.1;
 				"OTHER_LDFLAGS[arch=*]" = "-lstdc++";
-				PRODUCT_BUNDLE_IDENTIFIER = com.mitchellh.ghostty.debug;
-				PRODUCT_NAME = "$(TARGET_NAME)";
+				PRODUCT_BUNDLE_IDENTIFIER = com.term244.term244.debug;
+				PRODUCT_NAME = term244;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "Sources/App/macOS/ghostty-bridging-header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -1201,11 +1201,11 @@
 				DEVELOPMENT_TEAM = "";
 				ENABLE_HARDENED_RUNTIME = YES;
 				ENABLE_PREVIEWS = YES;
-				EXECUTABLE_NAME = ghostty;
+				EXECUTABLE_NAME = term244;
 				GCC_OPTIMIZATION_LEVEL = fast;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = "Ghostty-Info.plist";
-				INFOPLIST_KEY_CFBundleDisplayName = Ghostty;
+				INFOPLIST_KEY_CFBundleDisplayName = term244;
 				INFOPLIST_KEY_LSApplicationCategoryType = "public.app-category.developer-tools";
 				INFOPLIST_KEY_NSAppleEventsUsageDescription = "A program running within Ghostty would like to use AppleScript.";
 				INFOPLIST_KEY_NSBluetoothAlwaysUsageDescription = "A program running within Ghostty would like to use Bluetooth.";
@@ -1231,8 +1231,8 @@
 				MACOSX_DEPLOYMENT_TARGET = 13.0;
 				MARKETING_VERSION = 0.1;
 				"OTHER_LDFLAGS[arch=*]" = "-lstdc++";
-				PRODUCT_BUNDLE_IDENTIFIER = com.mitchellh.ghostty;
-				PRODUCT_NAME = "$(TARGET_NAME)";
+				PRODUCT_BUNDLE_IDENTIFIER = com.term244.term244;
+				PRODUCT_NAME = term244;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_OBJC_BRIDGING_HEADER = "Sources/App/macOS/ghostty-bridging-header.h";
 				SWIFT_VERSION = 5.0;
diff --git a/macos/Ghostty.xcodeproj/xcshareddata/xcschemes/Ghostty.xcscheme b/macos/Ghostty.xcodeproj/xcshareddata/xcschemes/Ghostty.xcscheme
index 16be46d67..d088d3b4e 100644
--- a/macos/Ghostty.xcodeproj/xcshareddata/xcschemes/Ghostty.xcscheme
+++ b/macos/Ghostty.xcodeproj/xcshareddata/xcschemes/Ghostty.xcscheme
@@ -15,7 +15,7 @@
             <BuildableReference
                BuildableIdentifier = "primary"
                BlueprintIdentifier = "A5B30530299BEAAA0047F10C"
-               BuildableName = "Ghostty.app"
+               BuildableName = "term244.app"
                BlueprintName = "Ghostty"
                ReferencedContainer = "container:Ghostty.xcodeproj">
             </BuildableReference>
diff --git a/macos/Sources/App/macOS/AppDelegate.swift b/macos/Sources/App/macOS/AppDelegate.swift
index 67ec9ac4a..304dce4bb 100644
--- a/macos/Sources/App/macOS/AppDelegate.swift
+++ b/macos/Sources/App/macOS/AppDelegate.swift
@@ -212,6 +212,16 @@ class AppDelegate: NSObject,
         // Initial config loading
         ghosttyConfigDidChange(config: ghostty.config)
 
+        // Add the "Open Viewer Tab…" item to the File menu, right after "New Tab".
+        if let newTabItem = menuNewTab, let fileMenu = newTabItem.menu {
+            let viewerItem = NSMenuItem(
+                title: "Open Viewer Tab…",
+                action: #selector(openViewerTab(_:)),
+                keyEquivalent: "")
+            viewerItem.target = self
+            fileMenu.insertItem(viewerItem, at: fileMenu.index(of: newTabItem) + 1)
+        }
+
         // Start our update checker.
         updateController.startUpdater()
 
@@ -458,6 +468,17 @@ class AppDelegate: NSObject,
         var isDirectory = ObjCBool(true)
         guard FileManager.default.fileExists(atPath: filename, isDirectory: &isDirectory) else { return false }
 
+        // HTML and Markdown files open in a viewer tab rather than executing.
+        if !isDirectory.boolValue {
+            let url = URL(fileURLWithPath: filename)
+            if ViewerController.supportedExtensions.contains(url.pathExtension.lowercased()) {
+                ViewerController.open(
+                    fileURL: url,
+                    from: TerminalController.preferredParent?.window)
+                return true
+            }
+        }
+
         // Set to true if confirmation is required before starting up the
         // new terminal.
         var requiresConfirm: Bool = false
@@ -962,6 +983,21 @@ class AppDelegate: NSObject,
         )
     }
 
+    /// Opens a file picker and renders the chosen HTML/Markdown file in a viewer tab.
+    @IBAction func openViewerTab(_ sender: Any?) {
+        let panel = NSOpenPanel()
+        panel.canChooseFiles = true
+        panel.canChooseDirectories = false
+        panel.allowsMultipleSelection = false
+        panel.message = "Choose an HTML or Markdown file to view"
+        panel.begin { response in
+            guard response == .OK, let url = panel.url else { return }
+            ViewerController.open(
+                fileURL: url,
+                from: TerminalController.preferredParent?.window)
+        }
+    }
+
     @IBAction func closeAllWindows(_ sender: Any?) {
         TerminalController.closeAllWindows()
         AboutController.shared.hide()
diff --git a/macos/Sources/Features/Viewer/ViewerController.swift b/macos/Sources/Features/Viewer/ViewerController.swift
new file mode 100644
index 000000000..606e1c0b6
--- /dev/null
+++ b/macos/Sources/Features/Viewer/ViewerController.swift
@@ -0,0 +1,75 @@
+import AppKit
+import SwiftUI
+
+/// A non-terminal tab that renders an HTML or Markdown file.
+///
+/// Unlike terminal tabs (`TerminalController` / `BaseTerminalController`), this
+/// is a lean `NSWindowController` that hosts a `WKWebView` through SwiftUI. Its
+/// window joins the native macOS tab group of a terminal window so it appears
+/// as a regular tab alongside terminal tabs.
+class ViewerController: NSWindowController, NSWindowDelegate {
+    /// Strong references to open viewer controllers. AppKit does not retain a
+    /// window controller for us, so we keep them alive here while their window
+    /// is open and drop them in `windowWillClose`.
+    private static var openControllers: [ViewerController] = []
+
+    /// File extensions this viewer knows how to render.
+    static let supportedExtensions: Set<String> = [
+        "md", "markdown", "mdown", "mkd", "mkdn", "html", "htm",
+    ]
+
+    private let fileURL: URL
+
+    init(fileURL: URL) {
+        self.fileURL = fileURL
+
+        let window = NSWindow(
+            contentRect: NSRect(x: 0, y: 0, width: 900, height: 680),
+            styleMask: [.titled, .closable, .miniaturizable, .resizable],
+            backing: .buffered,
+            defer: false)
+        window.tabbingMode = .preferred
+        window.title = fileURL.lastPathComponent
+        window.isReleasedWhenClosed = false
+
+        super.init(window: window)
+
+        window.delegate = self
+        window.contentView = NSHostingView(rootView: ViewerView(fileURL: fileURL))
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) is not supported")
+    }
+
+    /// Open `fileURL` in a new viewer tab. If `parent` is given, the viewer
+    /// joins that window's native tab group; otherwise it opens standalone.
+    @discardableResult
+    static func open(fileURL: URL, from parent: NSWindow? = nil) -> ViewerController {
+        let controller = ViewerController(fileURL: fileURL)
+        openControllers.append(controller)
+
+        guard let window = controller.window else { return controller }
+
+        if let parent, window.tabbingMode != .disallowed {
+            // If macOS already auto-tabbed our window, remove it first so we
+            // control the ordering (mirrors TerminalController.newTab).
+            if let group = parent.tabGroup,
+               group.windows.firstIndex(of: window) != nil {
+                group.removeWindow(window)
+            }
+            parent.addTabbedWindowSafely(window, ordered: .above)
+        }
+
+        controller.showWindow(nil)
+        window.makeKeyAndOrderFront(nil)
+        NSApp.activate(ignoringOtherApps: true)
+        return controller
+    }
+
+    // MARK: NSWindowDelegate
+
+    func windowWillClose(_ notification: Notification) {
+        Self.openControllers.removeAll { $0 === self }
+    }
+}
diff --git a/macos/Sources/Features/Viewer/ViewerView.swift b/macos/Sources/Features/Viewer/ViewerView.swift
new file mode 100644
index 000000000..09d063710
--- /dev/null
+++ b/macos/Sources/Features/Viewer/ViewerView.swift
@@ -0,0 +1,324 @@
+import SwiftUI
+import WebKit
+
+/// SwiftUI root view for a viewer tab. Hosts a `WKWebView` that renders the
+/// given HTML or Markdown file.
+struct ViewerView: View {
+    let fileURL: URL
+
+    var body: some View {
+        ViewerWebView(fileURL: fileURL)
+            .ignoresSafeArea()
+    }
+}
+
+/// `NSViewRepresentable` wrapper around `WKWebView`.
+struct ViewerWebView: NSViewRepresentable {
+    let fileURL: URL
+
+    func makeNSView(context: Context) -> WKWebView {
+        let config = WKWebViewConfiguration()
+        // A viewer never needs cookies or localStorage; a non-persistent store
+        // skips disk I/O on init.
+        config.websiteDataStore = .nonPersistent()
+
+        let webView = WKWebView(frame: .zero, configuration: config)
+        webView.allowsMagnification = true
+        load(into: webView)
+        return webView
+    }
+
+    func updateNSView(_ webView: WKWebView, context: Context) {
+        // The file URL is fixed for the lifetime of the view; nothing to do.
+    }
+
+    private func load(into webView: WKWebView) {
+        let ext = fileURL.pathExtension.lowercased()
+        let dir = fileURL.deletingLastPathComponent()
+
+        switch ext {
+        case "md", "markdown", "mdown", "mkd", "mkdn":
+            let text = (try? String(contentsOf: fileURL, encoding: .utf8))
+                ?? "# Could not read file\n\n`\(fileURL.path)`"
+            webView.loadHTMLString(ViewerHTML.markdownPage(markdown: text), baseURL: dir)
+        default:
+            // html, htm, or anything else: render the file directly. Grant
+            // read access to the directory so relative assets resolve.
+            webView.loadFileURL(fileURL, allowingReadAccessTo: dir)
+        }
+    }
+}
+
+/// Builds the self-contained HTML page used to render Markdown. The page embeds
+/// its own CSS and a compact Markdown-to-HTML renderer, so no network access or
+/// bundled resources are required.
+///
+/// The Markdown source is embedded as a base64 string. base64's alphabet
+/// (`A-Za-z0-9+/=`) contains no HTML-significant characters, so it can never
+/// prematurely close the `<script>` element or break out of a string literal.
+enum ViewerHTML {
+    static func markdownPage(markdown: String) -> String {
+        let b64 = Data(markdown.utf8).base64EncodedString()
+        return template.replacingOccurrences(of: "__MARKDOWN_B64__", with: b64)
+    }
+
+    private static let template = #"""
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<style>
+:root { color-scheme: light dark; }
+body {
+  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
+  font-size: 15px; line-height: 1.6;
+  max-width: 880px; margin: 0 auto; padding: 32px 40px;
+  color: #1f2328; background: #ffffff;
+  -webkit-text-size-adjust: 100%; word-wrap: break-word;
+}
+h1, h2, h3, h4, h5, h6 { font-weight: 600; line-height: 1.25; margin: 24px 0 16px; }
+h1 { font-size: 2em; border-bottom: 1px solid #d1d9e0; padding-bottom: .3em; }
+h2 { font-size: 1.5em; border-bottom: 1px solid #d1d9e0; padding-bottom: .3em; }
+h3 { font-size: 1.25em; }
+h4 { font-size: 1em; }
+h5 { font-size: .875em; }
+h6 { font-size: .85em; color: #59636e; }
+p { margin: 0 0 16px; }
+a { color: #0969da; text-decoration: none; }
+a:hover { text-decoration: underline; }
+code {
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: .88em; background: #eff1f3; padding: .2em .4em; border-radius: 6px;
+}
+pre {
+  background: #eff1f3; padding: 16px; border-radius: 8px; overflow: auto;
+  line-height: 1.45;
+}
+pre code { background: none; padding: 0; font-size: .85em; }
+blockquote {
+  margin: 0 0 16px; padding: 0 1em; color: #59636e;
+  border-left: .25em solid #d1d9e0;
+}
+ul, ol { margin: 0 0 16px; padding-left: 2em; }
+li { margin: .25em 0; }
+li > ul, li > ol { margin: .25em 0; }
+img { max-width: 100%; }
+hr { border: 0; height: 1px; background: #d1d9e0; margin: 24px 0; }
+table { border-collapse: collapse; margin: 0 0 16px; display: block; overflow: auto; }
+table th, table td { border: 1px solid #d1d9e0; padding: 6px 13px; }
+table th { font-weight: 600; }
+table tr:nth-child(2n) { background: #f6f8fa; }
+@media (prefers-color-scheme: dark) {
+  body { color: #e6edf3; background: #0d1117; }
+  h1, h2 { border-color: #3d444d; }
+  h6 { color: #9198a1; }
+  a { color: #4493f8; }
+  code, pre { background: #161b22; }
+  blockquote { color: #9198a1; border-color: #3d444d; }
+  hr { background: #3d444d; }
+  table th, table td { border-color: #3d444d; }
+  table tr:nth-child(2n) { background: #161b22; }
+}
+</style>
+</head>
+<body>
+<div id="content"></div>
+<script>
+var MD_B64 = "__MARKDOWN_B64__";
+(function () {
+  "use strict";
+
+  function decodeBase64Utf8(b64) {
+    var bin = atob(b64);
+    var bytes = new Uint8Array(bin.length);
+    for (var i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);
+    return new TextDecoder("utf-8").decode(bytes);
+  }
+
+  var SRC = decodeBase64Utf8(MD_B64);
+
+  function esc(s) {
+    return s.replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;");
+  }
+
+  // Format inline spans. The text is split on inline code spans so code is
+  // never touched by the emphasis/link passes, and no sentinel characters
+  // are needed.
+  function inlineFmt(text) {
+    var parts = text.split(/(`[^`\n]+`)/);
+    var out = "";
+    for (var p = 0; p < parts.length; p++) {
+      var seg = parts[p];
+      if (seg.length >= 2 && seg.charAt(0) === "`" && seg.charAt(seg.length - 1) === "`") {
+        out += "<code>" + esc(seg.slice(1, -1)) + "</code>";
+        continue;
+      }
+      var s = esc(seg);
+      s = s.replace(/!\[([^\]]*)\]\(([^)\s]+)(?:\s+"[^"]*")?\)/g,
+        '<img alt="$1" src="$2">');
+      s = s.replace(/\[([^\]]+)\]\(([^)\s]+)(?:\s+"[^"]*")?\)/g,
+        '<a href="$2">$1</a>');
+      s = s.replace(/\*\*([^\s](?:[\s\S]*?[^\s])?)\*\*/g, "<strong>$1</strong>");
+      s = s.replace(/\*([^\s*](?:[\s\S]*?[^\s*])?)\*/g, "<em>$1</em>");
+      s = s.replace(/~~([^~]+)~~/g, "<del>$1</del>");
+      out += s;
+    }
+    return out;
+  }
+
+  function splitRow(row) {
+    return row.trim().replace(/^\|/, "").replace(/\|$/, "")
+      .split("|").map(function (c) { return c.trim(); });
+  }
+
+  function blank(s) { return /^\s*$/.test(s); }
+
+  function renderList(block) {
+    var baseIndent = block[0].match(/^(\s*)/)[1].length;
+    var ordered = /^\s*\d+[.)]/.test(block[0]);
+    var items = [];
+    var cur = null;
+    for (var k = 0; k < block.length; k++) {
+      var m = block[k].match(/^(\s*)([-*+]|\d+[.)])\s+([\s\S]*)$/);
+      if (m && m[1].length <= baseIndent) {
+        cur = [m[3]];
+        items.push(cur);
+      } else if (cur) {
+        cur.push(block[k].replace(new RegExp("^\\s{0," + (baseIndent + 2) + "}"), ""));
+      }
+    }
+    var tag = ordered ? "ol" : "ul";
+    var html = "<" + tag + ">";
+    for (var n = 0; n < items.length; n++) {
+      var content = items[n].join("\n");
+      if (/\n\s*([-*+]|\d+[.)])\s+/.test("\n" + content)) {
+        html += "<li>" + render(content) + "</li>";
+      } else {
+        html += "<li>" + inlineFmt(content.replace(/\n/g, " ")) + "</li>";
+      }
+    }
+    return html + "</" + tag + ">";
+  }
+
+  function render(text) {
+    var lines = text.replace(/\r\n?/g, "\n").split("\n");
+    var out = [];
+    var i = 0;
+    while (i < lines.length) {
+      var l = lines[i];
+
+      if (blank(l)) { i++; continue; }
+
+      // Fenced code block
+      var f = l.match(/^\s*(`{3,}|~{3,})/);
+      if (f) {
+        var fchar = f[1].charAt(0);
+        var closeRe = new RegExp("^\\s*" + fchar + "{3,}\\s*$");
+        var code = [];
+        i++;
+        while (i < lines.length && !closeRe.test(lines[i])) { code.push(lines[i]); i++; }
+        i++;
+        out.push("<pre><code>" + esc(code.join("\n")) + "</code></pre>");
+        continue;
+      }
+
+      // ATX heading
+      var h = l.match(/^(#{1,6})\s+(.*?)\s*#*\s*$/);
+      if (h) {
+        var lv = h[1].length;
+        out.push("<h" + lv + ">" + inlineFmt(h[2]) + "</h" + lv + ">");
+        i++;
+        continue;
+      }
+
+      // Horizontal rule
+      if (/^\s{0,3}([-*_])(\s*\1){2,}\s*$/.test(l)) { out.push("<hr>"); i++; continue; }
+
+      // Blockquote
+      if (/^\s*>/.test(l)) {
+        var bq = [];
+        while (i < lines.length && /^\s*>/.test(lines[i])) {
+          bq.push(lines[i].replace(/^\s*>\s?/, ""));
+          i++;
+        }
+        out.push("<blockquote>" + render(bq.join("\n")) + "</blockquote>");
+        continue;
+      }
+
+      // GFM table
+      if (l.indexOf("|") >= 0 && i + 1 < lines.length &&
+          /^\s*\|?\s*:?-+:?\s*(\|\s*:?-+:?\s*)*\|?\s*$/.test(lines[i + 1])) {
+        var headers = splitRow(l);
+        var aligns = splitRow(lines[i + 1]).map(function (c) {
+          var L = c.charAt(0) === ":", R = c.charAt(c.length - 1) === ":";
+          return L && R ? "center" : R ? "right" : L ? "left" : "";
+        });
+        i += 2;
+        var rows = [];
+        while (i < lines.length && lines[i].indexOf("|") >= 0 && !blank(lines[i])) {
+          rows.push(splitRow(lines[i]));
+          i++;
+        }
+        var t = "<table><thead><tr>";
+        for (var c = 0; c < headers.length; c++) {
+          var a = aligns[c] ? ' style="text-align:' + aligns[c] + '"' : "";
+          t += "<th" + a + ">" + inlineFmt(headers[c]) + "</th>";
+        }
+        t += "</tr></thead><tbody>";
+        for (var r = 0; r < rows.length; r++) {
+          t += "<tr>";
+          for (var c2 = 0; c2 < headers.length; c2++) {
+            var a2 = aligns[c2] ? ' style="text-align:' + aligns[c2] + '"' : "";
+            t += "<td" + a2 + ">" + inlineFmt(rows[r][c2] || "") + "</td>";
+          }
+          t += "</tr>";
+        }
+        out.push(t + "</tbody></table>");
+        continue;
+      }
+
+      // Raw HTML block: passed through verbatim (CommonMark allows raw HTML).
+      if (/^\s*<(\/?[a-zA-Z][\w-]*|!--)/.test(l)) {
+        var hb = [];
+        while (i < lines.length && !blank(lines[i])) { hb.push(lines[i]); i++; }
+        out.push(hb.join("\n"));
+        continue;
+      }
+
+      // List
+      if (/^\s*([-*+]|\d+[.)])\s+/.test(l)) {
+        var blk = [];
+        while (i < lines.length &&
+               (/^\s*([-*+]|\d+[.)])\s+/.test(lines[i]) ||
+                (!blank(lines[i]) && /^\s+\S/.test(lines[i])))) {
+          blk.push(lines[i]);
+          i++;
+        }
+        out.push(renderList(blk));
+        continue;
+      }
+
+      // Paragraph
+      var para = [];
+      while (i < lines.length && !blank(lines[i]) &&
+             !/^(#{1,6})\s/.test(lines[i]) &&
+             !/^\s*>/.test(lines[i]) &&
+             !/^\s*(`{3,}|~{3,})/.test(lines[i]) &&
+             !/^\s*([-*+]|\d+[.)])\s+/.test(lines[i]) &&
+             !/^\s{0,3}([-*_])(\s*\1){2,}\s*$/.test(lines[i])) {
+        para.push(lines[i]);
+        i++;
+      }
+      out.push("<p>" + inlineFmt(para.join("\n")).replace(/\n/g, "<br>\n") + "</p>");
+    }
+    return out.join("\n");
+  }
+
+  document.getElementById("content").innerHTML = render(SRC);
+})();
+</script>
+</body>
+</html>
+"""#
+}
diff --git a/src/build/GhosttyXcodebuild.zig b/src/build/GhosttyXcodebuild.zig
index 81af994ca..b0a85d0ca 100644
--- a/src/build/GhosttyXcodebuild.zig
+++ b/src/build/GhosttyXcodebuild.zig
@@ -49,7 +49,7 @@ pub fn init(
     };
 
     const env = try std.process.getEnvMap(b.allocator);
-    const app_path = b.fmt("macos/build/{s}/Ghostty.app", .{xc_config});
+    const app_path = b.fmt("macos/build/{s}/term244.app", .{xc_config});
 
     // Our step to build the Ghostty macOS app.
     const build = build: {
@@ -143,7 +143,7 @@ pub fn init(
         open.has_side_effects = true;
         open.cwd = b.path("");
         open.addArgs(&.{b.fmt(
-            "{s}/Contents/MacOS/ghostty",
+            "{s}/Contents/MacOS/term244",
             .{app_path},
         )});