Release v1.23.0 (#31)

* Rename cmuxterm to cmux across entire codebase

- Rename GitHub repos: manaflow-ai/cmuxterm -> manaflow-ai/cmux,
  manaflow-ai/homebrew-cmuxterm -> manaflow-ai/homebrew-cmux
- Rename bundle IDs: com.cmuxterm.app -> com.cmux.app
- Rename CLI: CLI/cmuxterm.swift -> CLI/cmux.swift
- Rename homebrew submodule: homebrew-cmuxterm -> homebrew-cmux
- Update all socket paths: /tmp/cmuxterm*.sock -> /tmp/cmux*.sock
- Update all GitHub URLs, DMG names, Sparkle URLs
- Update all source files, scripts, tests, docs, CI workflows

* Bump version to 1.23.0

Sources/Update/UpdateTestURLProtocol.swift

@@ -2,9 +2,9 @@
 import Foundation
 
 final class UpdateTestURLProtocol: URLProtocol {
-    static let host = "cmuxterm.test"
+    static let host = "cmux.test"
     static let appcastPath = "/appcast.xml"
-    static let updatePath = "/cmuxterm-test.zip"
+    static let updatePath = "/cmux-test.zip"
 
     private static var isRegistered = false
     private static let registrationLock = NSLock()
@@ -84,7 +84,7 @@ final class UpdateTestURLProtocol: URLProtocol {
         } else {
             item = """
             <item>
-              <title>cmuxterm \(version)</title>
+              <title>cmux \(version)</title>
               <sparkle:version>\(version)</sparkle:version>
               <sparkle:shortVersionString>\(version)</sparkle:shortVersionString>
               <enclosure url="\(updateURL)" length="\(updateLength)" type="application/octet-stream" />
@@ -98,7 +98,7 @@ final class UpdateTestURLProtocol: URLProtocol {
           xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle"
           xmlns:dc="http://purl.org/dc/elements/1.1/">
           <channel>
-            <title>cmuxterm Test Updates</title>
+            <title>cmux Test Updates</title>
             <link>https://\(host)</link>
             <description>Test updates feed</description>
             <language>en</language>
@@ -111,7 +111,7 @@ final class UpdateTestURLProtocol: URLProtocol {
     }
 
     private static func updateArchiveData() -> Data {
-        Data("cmuxterm test update".utf8)
+        Data("cmux test update".utf8)
     }
 }
 #endif