macos: raise the deployment target to 11.0 to match what we actually ship (#9083)

MACOSX_DEPLOYMENT_TARGET said 10.15, but the app has not been able to launch
there for as long as it has bundled Sparkle. From a release build of
Lantern.app:

  Frameworks/Sparkle.framework   minos 11.0   -- no 10.15 slice
  Frameworks/objective_c.framework  minos 13.0   -- both slices
  MacOS/Lantern                  minos 10.15 (x86_64), 11.0 (arm64)

and the main binary loads Sparkle with LC_LOAD_DYLIB, not LC_LOAD_WEAK_DYLIB,
so on 10.15 dyld refuses to load it and the app never starts. The arm64 slice
is 11.0 regardless, since arm64 macOS did not exist before 11.0. The declared
target was describing a configuration that has never run.

Saying 11.0 costs nothing that works today and stops the target from blocking
APIs the app can already rely on. FileHandle's throwing read/write/truncate are
10.15.4+, so SystemExtensionManager had to branch on availability with a
fallback using readData(ofLength:) -- which raises an ObjC exception Swift
cannot catch and reports no error at all. That branch was unreachable on every
machine that can run the app, so it is gone along with the guard.

Also refreshes PODFILE CHECKSUM in macos/Podfile.lock, since editing the Podfile
changed it. That line alone: it is the Podfile's SHA1, and regenerating the
whole lockfile here would rewrite every SPEC CHECKSUM and bump the recorded
CocoaPods version as unrelated churn.

Verified with a full local build (make macos-unit-tests, TEST SUCCEEDED) after
rebasing onto the native-logs changes, so the new logger test runs at the 11.0
target. The built binary reports minos 11.0, previously 10.15.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: myleshorton

macos/Podfile

@@ -1,4 +1,4 @@
-platform :osx, '10.15'
+platform :osx, '11.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'

macos/Podfile.lock

@@ -140,6 +140,6 @@ SPEC CHECKSUMS:
   url_launcher_macos: 175a54c831f4375a6cf895875f716ee5af3888ce
   window_manager: e25faf20d88283a0d46e7b1a759d07261ca27575
 
-PODFILE CHECKSUM: b1a5a5e815560a377d8b3e64b4f3f97e2bd372ba
+PODFILE CHECKSUM: c03e34b37a3e49373f4e9410aa6cfcb98b720641
 
 COCOAPODS: 1.16.2

macos/Runner.xcodeproj/project.pbxproj

@@ -782,7 +782,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = "$(FLUTTER_BUILD_NAME)";
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
@@ -835,7 +835,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = "$(FLUTTER_BUILD_NAME)";
 				MTL_FAST_MATH = YES;
 				OTHER_LDFLAGS = "-lc++";
@@ -885,7 +885,7 @@
 					"@executable_path/../../../../Frameworks",
 				);
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = "$(FLUTTER_BUILD_NAME)";
 				MTL_FAST_MATH = YES;
 				OTHER_LDFLAGS = "-lc++";
@@ -907,7 +907,7 @@
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CURRENT_PROJECT_VERSION = 1;
 				GENERATE_INFOPLIST_FILE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = org.getlantern.lantern.RunnerTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -923,7 +923,7 @@
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CURRENT_PROJECT_VERSION = 1;
 				GENERATE_INFOPLIST_FILE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = org.getlantern.lantern.RunnerTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -939,7 +939,7 @@
 				BUNDLE_LOADER = "$(TEST_HOST)";
 				CURRENT_PROJECT_VERSION = 1;
 				GENERATE_INFOPLIST_FILE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MARKETING_VERSION = 1.0;
 				PRODUCT_BUNDLE_IDENTIFIER = org.getlantern.lantern.RunnerTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -989,7 +989,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -1021,7 +1021,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				"PROVISIONING_PROFILE_SPECIFIER[sdk=macosx*]" = "Macos Development Profile";
 				REGISTER_APP_GROUPS = YES;
@@ -1085,7 +1085,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -1135,7 +1135,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -1168,7 +1168,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				"PROVISIONING_PROFILE_SPECIFIER[sdk=macosx*]" = "Macos Development Profile";
 				REGISTER_APP_GROUPS = YES;
@@ -1202,7 +1202,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)/Frameworks",
 				);
-				MACOSX_DEPLOYMENT_TARGET = 10.15;
+				MACOSX_DEPLOYMENT_TARGET = 11.0;
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				"PROVISIONING_PROFILE_SPECIFIER[sdk=macosx*]" = "Macos Development Profile";
 				REGISTER_APP_GROUPS = YES;

macos/Runner/VPN/SystemExtensionManager.swift

@@ -1041,22 +1041,12 @@ internal enum SystemExtensionBundleHasher {
     hasher.update(data: Data(relativePath.utf8))
     hasher.update(data: Data([0]))
 
-    if #available(macOS 10.15.4, *) {
-      do {
-        while let chunk = try fileHandle.read(upToCount: readChunkSize), !chunk.isEmpty {
-          hasher.update(data: chunk)
-        }
-      } catch {
-        return false
-      }
-    } else {
-      while true {
-        let chunk = fileHandle.readData(ofLength: readChunkSize)
-        if chunk.isEmpty {
-          break
-        }
+    do {
+      while let chunk = try fileHandle.read(upToCount: readChunkSize), !chunk.isEmpty {
         hasher.update(data: chunk)
       }
+    } catch {
+      return false
     }
 
     hasher.update(data: Data([0]))