fix(avlivebody): ad-hoc signing for local dev

Apple Development cert + Automatic signing makes Xcode demand a
Mac Development cert that no one has. Switch to manual ad-hoc
(CODE_SIGN_IDENTITY = -) so any contributor can build. Drop
hardened runtime; re-enable for distribution builds.

avlivebody-mac/Config/Shared.xcconfig

@@ -2,4 +2,7 @@
 
 MACOSX_DEPLOYMENT_TARGET = 15.0
 SWIFT_VERSION = 5.10
-CODE_SIGN_STYLE = Automatic
+// Manual ad-hoc signing for local dev (no Apple Mac Development cert
+// required). Override here or via target settings for distribution.
+CODE_SIGN_STYLE = Manual
+CODE_SIGN_IDENTITY = -

avlivebody-mac/project.yml

@@ -34,9 +34,12 @@ targets:
         PRODUCT_BUNDLE_IDENTIFIER: cc.saillant.AVLiveBody
         INFOPLIST_FILE: Sources/AVLiveBody/Info.plist
         GENERATE_INFOPLIST_FILE: NO
-        CODE_SIGN_STYLE: Automatic
+        CODE_SIGN_STYLE: Manual
+        CODE_SIGN_IDENTITY: "-"
+        CODE_SIGNING_REQUIRED: NO
+        CODE_SIGNING_ALLOWED: NO
         SWIFT_VERSION: "5.10"
-        ENABLE_HARDENED_RUNTIME: YES
+        ENABLE_HARDENED_RUNTIME: NO
   AVLiveBodyTests:
     type: bundle.unit-test
     platform: macOS