reduce: orphaned resources — 51 dead localization keys, unused icon bundle, vestigial bridge header, handler-less URL scheme registration

- Localizable.xcstrings: remove 51 of 944 keys with zero String(localized:)
  references anywhere in the repo. Mix of cmux-branded leftovers
  (dialog.quitCmux.*, menu.quitCmux, browser.proceedInCmux,
  menu.app.openCmuxSettingsFile) and keys superseded by renamed successors
  (alert.moveTab.* replaced dialog.moveTab.*, resetPalette.subtitleV2
  replaced .subtitle, sidebar.remote.subtitleFallback replaced .subtitle,
  etc.). Independently re-verified each key before removal;
  cli.claude-teams.usage was a false positive and stays.
- AppIcon.icon/: Icon Composer bundle present only as an inert Xcode
  navigator file reference — no PBXBuildFile, no Resources build phase entry;
  ASSETCATALOG_COMPILER_APPICON_NAME points at Assets.xcassets appiconsets
- ghostty.h: 4-line wrapper from the pre-GhosttyKit bridging approach; the
  live bridge is programa-Bridging-Header.h (@import GhosttyKit) and nothing
  includes this file
- Info.plist: drop CFBundleURLTypes registering Programa as a Default-rank
  http/https handler — the only URL entry point filters to isFileURL and
  silently drops web URLs, so selecting Programa as default browser would
  swallow links; registration has had no handler since the cmux-era commit
  that added it

Author: arzafran

AppIcon.icon/Assets/programa-terminal.png

@@ -255,7 +255,6 @@
 		A5001544 /* TerminalImageTransfer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TerminalImageTransfer.swift; sourceTree = "<group>"; };
 		A5001545 /* TerminalSSHSessionDetector.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TerminalSSHSessionDetector.swift; sourceTree = "<group>"; };
 			A5001016 /* GhosttyKit.xcframework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.xcframework; path = GhosttyKit.xcframework; sourceTree = "<group>"; };
-		A5001017 /* ghostty.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = ghostty.h; sourceTree = "<group>"; };
 		A5001018 /* programa-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "programa-Bridging-Header.h"; sourceTree = "<group>"; };
 		A5001019 /* TerminalController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TerminalController.swift; sourceTree = "<group>"; };
 		A5FF0004 /* TerminalController+BrowserAutomation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "TerminalController+BrowserAutomation.swift"; sourceTree = "<group>"; };
@@ -318,7 +317,6 @@
 		C0B4D9B1A1B2C3D4E5F60718 /* UpdatePillUITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UpdatePillUITests.swift; sourceTree = "<group>"; };
 		E6FA9085A1B2C3D4E5F60718 /* WorkspaceDescriptionUITests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WorkspaceDescriptionUITests.swift; sourceTree = "<group>"; };
 		A5001101 /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
-		IC000002 /* AppIcon.icon */ = {isa = PBXFileReference; lastKnownFileType = folder; path = AppIcon.icon; sourceTree = "<group>"; };
 		B2E7294509CC42FE9191870E /* xterm-ghostty */ = {isa = PBXFileReference; lastKnownFileType = file; path = "ghostty/terminfo/78/xterm-ghostty"; sourceTree = "<group>"; };
 		C1ADE00001A1B2C3D4E5F719 /* claude */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = "Resources/bin/claude"; sourceTree = SOURCE_ROOT; };
 		D1BEF00001A1B2C3D4E5F719 /* open */ = {isa = PBXFileReference; lastKnownFileType = text.script.sh; path = "Resources/bin/open"; sourceTree = SOURCE_ROOT; };
@@ -489,9 +487,7 @@
 				B9000003A1B2C3D4E5F60719 /* CLI */,
 				087C454FFF74443AB06942C3 /* Resources */,
 				A5001101 /* Assets.xcassets */,
-				IC000002 /* AppIcon.icon */,
 				A5001016 /* GhosttyKit.xcframework */,
-				A5001017 /* ghostty.h */,
 				A5001018 /* programa-Bridging-Header.h */,
 				3196C9C2D01F054C1D3385DD /* programaUITests */,
 				F1000003A1B2C3D4E5F60718 /* programaTests */,

AppIcon.icon/icon.json

@@ -47,22 +47,6 @@
 	<string>A program running within Programa would like to use your microphone.</string>
 	<key>NSCameraUsageDescription</key>
 	<string>A program running within Programa would like to use your camera.</string>
-	<key>CFBundleURLTypes</key>
-	<array>
-		<dict>
-			<key>CFBundleTypeRole</key>
-			<string>Viewer</string>
-			<key>CFBundleURLName</key>
-			<string>$(PRODUCT_BUNDLE_IDENTIFIER).web</string>
-			<key>LSHandlerRank</key>
-			<string>Default</string>
-			<key>CFBundleURLSchemes</key>
-			<array>
-				<string>http</string>
-				<string>https</string>
-			</array>
-		</dict>
-	</array>
 	<key>NSPrincipalClass</key>
 	<string>NSApplication</string>
 	<key>NSAppleScriptEnabled</key>