fix(ci): disable code signing — Mac runner has no Apple Developer account

STOPGAP: CODE_SIGN_IDENTITY="-" CODE_SIGNING_REQUIRED=NO to bypass
signing on the Mac CI runner which has no Apple account signed into Xcode.

REAL FIX: Sign into Xcode → Settings → Accounts with the Apple Developer
account on the Mac runner machine. Then -allowProvisioningUpdates +
DEVELOPMENT_TEAM will auto-provision profiles for any bundle IDs.

.gitea/workflows/pr-iphone-deploy.yml

@@ -85,6 +85,19 @@ jobs:
             -project TabataGo.xcodeproj \
             -scmProvider system
 
+      # STOPGAP — The Mac CI runner has no Apple Developer account signed into
+      # Xcode, so provisioning profiles for bundle IDs like
+      # fr.millianlmx.tabatago.* can't be auto-created. This bypasses code
+      # signing entirely so the build succeeds. The resulting .app will NOT
+      # install on physical devices without manual re-signing.
+      #
+      # REAL FIX (manual, one-time, on the Mac runner):
+      #   1. Open Xcode → Settings → Accounts → sign in with the Apple
+      #      Developer account.
+      #   2. After that, remove CODE_SIGN_IDENTITY="-" and
+      #      CODE_SIGNING_REQUIRED=NO below, and
+      #      -allowProvisioningUpdates + DEVELOPMENT_TEAM will auto-provision
+      #      profiles for any new bundle IDs.
       - name: Build app
         run: |
           cd tabatago-swift
@@ -99,7 +112,9 @@ jobs:
             -clonedSourcePackagesDirPath ../build/spm-cache \
             SWIFT_ENABLE_EXPLICIT_MODULES=NO \
             ONLY_ACTIVE_ARCH=NO \
-            CODE_SIGN_STYLE=Automatic DEVELOPMENT_TEAM=2MJF39L8VY
+            CODE_SIGN_IDENTITY="-" \
+            CODE_SIGNING_REQUIRED=NO \
+            DEVELOPMENT_TEAM=2MJF39L8VY
 
       - name: Package IPA
         run: |