Share Extension: back out target, keep URL scheme

The signed export needs a provisioning profile for the extension's
bundle id (com.flights.app.share) which the dev portal hasn't
provisioned for this team. Reverted the pbxproj surgery that added
the FlightsShareExtension target.

Kept:
- Flights/Info.plist with CFBundleURLTypes registering flights://
- `.onOpenURL` handler in RootView that consumes
  `flights://import?carrier=...&num=...&dep=...&arr=...&date=...`
- FlightsShareExtension/ source files (ShareViewController.swift +
  Info.plist) in the repo for later — when the extension bundle id
  is provisioned, the target can be re-added in Xcode UI in a few
  minutes (no need to redo the Swift work)

Until the extension is built, users can still get Mail integration
by installing a one-time Apple Shortcut that takes selected text
and opens `flights://import?...`. The host app handles the rest.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Flights.xcodeproj/project.pbxproj

@@ -76,8 +76,6 @@
 		HX0E000EEEE000EEEE000001 /* HistoryRouteMapView.swift in Sources */ = {isa = PBXBuildFile; fileRef = HX0E000EEEE000EEEE000002 /* HistoryRouteMapView.swift */; };
 		HX0F000FFFF000FFFF000001 /* YearInReviewView.swift in Sources */ = {isa = PBXBuildFile; fileRef = HX0F000FFFF000FFFF000002 /* YearInReviewView.swift */; };
 		HX1000001000000010000001 /* AirframeMetadataService.swift in Sources */ = {isa = PBXBuildFile; fileRef = HX1000001000000010000002 /* AirframeMetadataService.swift */; };
-		SX01000000000000000001A1 /* ShareViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = SX01000000000000000001B1 /* ShareViewController.swift */; };
-		SX01000000000000000004A1 /* FlightsShareExtension.appex in Embed Foundation Extensions */ = {isa = PBXBuildFile; fileRef = SX01000000000000000003B1 /* FlightsShareExtension.appex */; settings = {ATTRIBUTES = (RemoveHeadersOnCopy, ); }; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -88,29 +86,8 @@
 			remoteGlobalIDString = E373C48C497D48D388BF7657;
 			remoteInfo = Flights;
 		};
-		SX0100000000000000000DA1 /* PBXContainerItemProxy */ = {
-			isa = PBXContainerItemProxy;
-			containerPortal = 5418BEEAEFF644ADA7240CEA /* Project object */;
-			proxyType = 1;
-			remoteGlobalIDString = SX01000000000000000009A1;
-			remoteInfo = FlightsShareExtension;
-		};
 /* End PBXContainerItemProxy section */
 
-/* Begin PBXCopyFilesBuildPhase section */
-		SX0100000000000000000FA1 /* Embed Foundation Extensions */ = {
-			isa = PBXCopyFilesBuildPhase;
-			buildActionMask = 2147483647;
-			dstPath = "";
-			dstSubfolderSpec = 13;
-			files = (
-				SX01000000000000000004A1 /* FlightsShareExtension.appex in Embed Foundation Extensions */,
-			);
-			name = "Embed Foundation Extensions";
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXCopyFilesBuildPhase section */
-
 /* Begin PBXFileReference section */
 		04AC23D8748D42C9A7115FAC /* Airline.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Airline.swift; sourceTree = "<group>"; };
 		0CD303E3EDCC4BF2BCF31722 /* AirportSearchField.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AirportSearchField.swift; sourceTree = "<group>"; };
@@ -184,9 +161,6 @@
 		HX0E000EEEE000EEEE000002 /* HistoryRouteMapView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HistoryRouteMapView.swift; sourceTree = "<group>"; };
 		HX0F000FFFF000FFFF000002 /* YearInReviewView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = YearInReviewView.swift; sourceTree = "<group>"; };
 		HX1000001000000010000002 /* AirframeMetadataService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AirframeMetadataService.swift; sourceTree = "<group>"; };
-		SX01000000000000000001B1 /* ShareViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ShareViewController.swift; sourceTree = "<group>"; };
-		SX01000000000000000002B1 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
-		SX01000000000000000003B1 /* FlightsShareExtension.appex */ = {isa = PBXFileReference; explicitFileType = "wrapper.app-extension"; includeInIndex = 0; path = FlightsShareExtension.appex; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -204,13 +178,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		SX01000000000000000007A1 /* Frameworks */ = {
-			isa = PBXFrameworksBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
@@ -285,20 +252,10 @@
 			children = (
 				8A3CB0CCC2524542AFB0D1D2 /* Flights.app */,
 				T1000000000000000000003A /* FlightsTests.xctest */,
-				SX01000000000000000003B1 /* FlightsShareExtension.appex */,
 			);
 			name = Products;
 			sourceTree = "<group>";
 		};
-		SX01000000000000000005A1 /* FlightsShareExtension */ = {
-			isa = PBXGroup;
-			children = (
-				SX01000000000000000001B1 /* ShareViewController.swift */,
-				SX01000000000000000002B1 /* Info.plist */,
-			);
-			path = FlightsShareExtension;
-			sourceTree = "<group>";
-		};
 		T1000000000000000000005A /* FlightsTests */ = {
 			isa = PBXGroup;
 			children = (
@@ -347,7 +304,6 @@
 			isa = PBXGroup;
 			children = (
 				1D5A2C06B99046F3934D2E59 /* Flights */,
-				SX01000000000000000005A1 /* FlightsShareExtension */,
 				T1000000000000000000005A /* FlightsTests */,
 				517CC07B82D949359C6CD4F5 /* Products */,
 			);
@@ -384,12 +340,10 @@
 				A5535283EA784250AAF50064 /* Sources */,
 				EB782B062CA144E2972778DE /* Frameworks */,
 				6B9FCA84AAAA44529A95D7AC /* Resources */,
-				SX0100000000000000000FA1 /* Embed Foundation Extensions */,
 			);
 			buildRules = (
 			);
 			dependencies = (
-				SX0100000000000000000EA1 /* PBXTargetDependency */,
 			);
 			name = Flights;
 			productName = Flights;
@@ -413,23 +367,6 @@
 			productReference = T1000000000000000000003A /* FlightsTests.xctest */;
 			productType = "com.apple.product-type.bundle.unit-test";
 		};
-		SX01000000000000000009A1 /* FlightsShareExtension */ = {
-			isa = PBXNativeTarget;
-			buildConfigurationList = SX0100000000000000000CA1 /* Build configuration list for PBXNativeTarget "FlightsShareExtension" */;
-			buildPhases = (
-				SX01000000000000000006A1 /* Sources */,
-				SX01000000000000000007A1 /* Frameworks */,
-				SX01000000000000000008A1 /* Resources */,
-			);
-			buildRules = (
-			);
-			dependencies = (
-			);
-			name = FlightsShareExtension;
-			productName = FlightsShareExtension;
-			productReference = SX01000000000000000003B1 /* FlightsShareExtension.appex */;
-			productType = "com.apple.product-type.app-extension";
-		};
 /* End PBXNativeTarget section */
 
 /* Begin PBXProject section */
@@ -454,7 +391,6 @@
 			projectRoot = "";
 			targets = (
 				E373C48C497D48D388BF7657 /* Flights */,
-				SX01000000000000000009A1 /* FlightsShareExtension */,
 				T1000000000000000000006A /* FlightsTests */,
 			);
 		};
@@ -466,11 +402,6 @@
 			target = E373C48C497D48D388BF7657 /* Flights */;
 			targetProxy = T1000000000000000000002A /* PBXContainerItemProxy */;
 		};
-		SX0100000000000000000EA1 /* PBXTargetDependency */ = {
-			isa = PBXTargetDependency;
-			target = SX01000000000000000009A1 /* FlightsShareExtension */;
-			targetProxy = SX0100000000000000000DA1 /* PBXContainerItemProxy */;
-		};
 /* End PBXTargetDependency section */
 
 /* Begin PBXResourcesBuildPhase section */
@@ -485,13 +416,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		SX01000000000000000008A1 /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
@@ -574,14 +498,6 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
-		SX01000000000000000006A1 /* Sources */ = {
-			isa = PBXSourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				SX01000000000000000001A1 /* ShareViewController.swift in Sources */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
 /* End PBXSourcesBuildPhase section */
 
 /* Begin XCBuildConfiguration section */
@@ -724,54 +640,6 @@
 			};
 			name = Release;
 		};
-		SX0100000000000000000AA1 /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = V3PF3M6B6U;
-				GENERATE_INFOPLIST_FILE = NO;
-				INFOPLIST_FILE = FlightsShareExtension/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/Frameworks",
-					"@executable_path/../../Frameworks",
-				);
-				MARKETING_VERSION = 1.0;
-				PRODUCT_BUNDLE_IDENTIFIER = com.flights.app.share;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SKIP_INSTALL = YES;
-				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
-				TARGETED_DEVICE_FAMILY = "1,2";
-			};
-			name = Debug;
-		};
-		SX0100000000000000000BA1 /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 1;
-				DEVELOPMENT_TEAM = V3PF3M6B6U;
-				GENERATE_INFOPLIST_FILE = NO;
-				INFOPLIST_FILE = FlightsShareExtension/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 17.0;
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/Frameworks",
-					"@executable_path/../../Frameworks",
-				);
-				MARKETING_VERSION = 1.0;
-				PRODUCT_BUNDLE_IDENTIFIER = com.flights.app.share;
-				PRODUCT_NAME = "$(TARGET_NAME)";
-				SKIP_INSTALL = YES;
-				SWIFT_EMIT_LOC_STRINGS = YES;
-				SWIFT_VERSION = 5.0;
-				TARGETED_DEVICE_FAMILY = "1,2";
-			};
-			name = Release;
-		};
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
@@ -802,15 +670,6 @@
 			defaultConfigurationIsVisible = 0;
 			defaultConfigurationName = Release;
 		};
-		SX0100000000000000000CA1 /* Build configuration list for PBXNativeTarget "FlightsShareExtension" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				SX0100000000000000000AA1 /* Debug */,
-				SX0100000000000000000BA1 /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
 /* End XCConfigurationList section */
 	};
 	rootObject = 5418BEEAEFF644ADA7240CEA /* Project object */;