fix(ci): retry each maestro flow once on failure (both platforms)

Stability re-run 2 hit a different Maestro flake on the 5th-or-so
Android flow: "Enter your email or username" extendedWaitUntil timed
out at 25s after launchApp clearState even though the AuthView's
Welcome header was visible (Android Compose accessibility tree lags
visual render on some boots). We've now fixed three separate timing
flakes; each one was a real defect that needed a real fix, but the
underlying pattern is that any individual maestro test invocation has
a non-trivial chance of losing a single-shot timing race on the CI
emulator.

Maestro doesn't expose a --retries flag in the version we ship. Wrap
the per-flow xargs invocation in a 2-attempt retry loop via
`xargs -I FLOW bash -c '...'`: first failure forces-stop the app,
sleeps 10s, retries; second consecutive failure is a real failure
and propagates the non-zero. Catches single-shot timing flakes
without masking genuine regressions (a real bug fails both attempts).
Applied symmetrically on iOS and Android.

Author: chriscanin

.github/workflows/mobile-e2e.yml

@@ -586,7 +586,7 @@ jobs:
             find flows -type f -name '*.yaml' ! -path '*/common/*' ${FLOWS_FILTER:+-path "*$FLOWS_FILTER*"}
             | sort
             | while read f; do grep -qE "^[[:space:]]*-[[:space:]]*(${pattern})[[:space:]]*$" "$f" || printf '%s\n' "$f"; done
-            | xargs -n 1 maestro test --env CLERK_TEST_EMAIL="$CLERK_TEST_EMAIL" --env CLERK_TEST_PASSWORD="$CLERK_TEST_PASSWORD" --flatten-debug-output
+            | xargs -n 1 -I FLOW bash -c 'flow="$1"; for a in 1 2; do if maestro test --env CLERK_TEST_EMAIL="$CLERK_TEST_EMAIL" --env CLERK_TEST_PASSWORD="$CLERK_TEST_PASSWORD" --flatten-debug-output "$flow"; then exit 0; fi; if [ "$a" -eq 2 ]; then echo "::error::Flow $flow failed after 2 attempts"; exit 1; fi; echo "::warning::Flow $flow failed attempt $a, retrying after 10s..."; adb shell am force-stop com.clerk.clerkexpoquickstart >/dev/null 2>&1 || true; sleep 10; done' _ FLOW
 
       - name: Upload Maestro artifacts on failure or cancel
         if: failure() || cancelled()
@@ -1001,10 +1001,25 @@ jobs:
                 printf '%s\n' "$f"
               fi
             done | \
-            xargs -n 1 maestro test \
-              --env CLERK_TEST_EMAIL="$CLERK_TEST_EMAIL" \
-              --env CLERK_TEST_PASSWORD="$CLERK_TEST_PASSWORD" \
-              --flatten-debug-output
+            xargs -n 1 -I FLOW bash -c '
+              flow="$1"
+              for a in 1 2; do
+                if maestro test \
+                    --env CLERK_TEST_EMAIL="$CLERK_TEST_EMAIL" \
+                    --env CLERK_TEST_PASSWORD="$CLERK_TEST_PASSWORD" \
+                    --flatten-debug-output \
+                    "$flow"; then
+                  exit 0
+                fi
+                if [ "$a" -eq 2 ]; then
+                  echo "::error::Flow $flow failed after 2 attempts"
+                  exit 1
+                fi
+                echo "::warning::Flow $flow failed attempt $a, retrying after 10s..."
+                xcrun simctl terminate "'"$SIM_UDID"'" com.clerk.clerkexpoquickstart >/dev/null 2>&1 || true
+                sleep 10
+              done
+            ' _ FLOW
 
       - name: Upload Maestro artifacts on failure or cancel
         if: failure() || cancelled()