Replace CI upgrade test with local script

Remove GitHub Actions workflow and consolidate upgrade test into a single
`just test-upgrade <commit>` command that uses git worktree for isolation.

Author: DRadmir

.github/workflows/upgrade_tests.yml

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+COMMIT="${1:?Usage: just upgrade-test <commit-or-tag>}"
+REPO_ROOT="$(git rev-parse --show-toplevel)"
+WORKTREE_DIR="/tmp/gem-upgrade-test-$$"
+SIMULATOR_NAME="${SIMULATOR_NAME:-iPhone 17}"
+SIMULATOR_DEST="platform=iOS Simulator,name=$SIMULATOR_NAME"
+OLD_DERIVED_DATA="$WORKTREE_DIR/build/DerivedData"
+OLD_SPM_CACHE="$WORKTREE_DIR/build/SourcePackages"
+BUILD_THREADS="$(sysctl -n hw.ncpu)"
+
+cleanup() {
+    echo "==> Cleaning up worktree"
+    cd "$REPO_ROOT"
+    git worktree remove --force "$WORKTREE_DIR" 2>/dev/null || true
+}
+trap cleanup EXIT
+
+echo "==> Phase 1: Build old version ($COMMIT)"
+
+git worktree add "$WORKTREE_DIR" "$COMMIT"
+cd "$WORKTREE_DIR"
+git submodule update --init
+
+echo "==> Generating stone (old)"
+just generate-stone
+
+echo "==> Building old version for UI testing"
+set -o pipefail && xcodebuild -project Gem.xcodeproj \
+    -scheme GemUITests \
+    -testPlan ui_tests \
+    ONLY_ACTIVE_ARCH=YES \
+    -destination "$SIMULATOR_DEST" \
+    -derivedDataPath "$OLD_DERIVED_DATA" \
+    -clonedSourcePackagesDirPath "$OLD_SPM_CACHE" \
+    -allowProvisioningUpdates \
+    -allowProvisioningDeviceRegistration \
+    -parallelizeTargets \
+    -jobs "$BUILD_THREADS" \
+    build-for-testing | xcbeautify --quieter --is-ci
+
+echo "==> Resetting simulator"
+cd "$REPO_ROOT"
+just reset-simulator
+
+echo "==> Running ImportWalletReceiveBitcoinUITests (old version)"
+cd "$WORKTREE_DIR"
+set -o pipefail && xcodebuild -project Gem.xcodeproj \
+    -scheme GemUITests \
+    -testPlan ui_tests \
+    ONLY_ACTIVE_ARCH=YES \
+    -destination "$SIMULATOR_DEST" \
+    -derivedDataPath "$OLD_DERIVED_DATA" \
+    -clonedSourcePackagesDirPath "$OLD_SPM_CACHE" \
+    -allowProvisioningUpdates \
+    -allowProvisioningDeviceRegistration \
+    -only-testing GemUITests/ImportWalletReceiveBitcoinUITests \
+    test-without-building | xcbeautify --quieter --is-ci
+
+echo "==> Phase 2: Build current version"
+cd "$REPO_ROOT"
+
+just build-for-testing-ui
+
+DERIVED_DATA="build/DerivedData"
+SPM_CACHE="build/SourcePackages"
+
+echo "==> Running UpgradeVerificationTests (current version)"
+set -o pipefail && xcodebuild -project Gem.xcodeproj \
+    -scheme GemUITests \
+    -testPlan ui_tests \
+    ONLY_ACTIVE_ARCH=YES \
+    -destination "$SIMULATOR_DEST" \
+    -derivedDataPath "$DERIVED_DATA" \
+    -clonedSourcePackagesDirPath "$SPM_CACHE" \
+    -allowProvisioningUpdates \
+    -allowProvisioningDeviceRegistration \
+    -only-testing GemUITests/UpgradeVerificationTests \
+    test-without-building | xcbeautify --quieter --is-ci
+
+echo "==> Upgrade test passed!"

build-system/scripts/upgrade-test.sh

@@ -139,11 +139,9 @@ build-for-testing-ui: (_test-ui "build-for-testing")
 
 test-ui-without-building: reset-simulator (_test-ui "test-without-building")
 
-# Run ImportWalletReceiveBitcoinUITests without building (phase 1 of upgrade test)
-test-upgrade-setup: (_test-ui "test-without-building" "GemUITests/ImportWalletReceiveBitcoinUITests")
-
-# Run UpgradeVerificationTests without building and without resetting the simulator (phase 2 of upgrade test)
-test-upgrade-verify: (_test-ui "test-without-building" "GemUITests/UpgradeVerificationTests")
+# Run full upgrade test: build old version, create wallet, build current, verify wallet survives
+test-upgrade COMMIT:
+    @bash build-system/scripts/upgrade-test.sh {{COMMIT}}
 
 reset-simulator NAME=SIMULATOR_NAME:
     @echo "==> Resetting {{NAME}} simulator to clean state"