status sweep: cap check-health per node (timeout) so one stuck node can't wedge fleet rpc-update

A hung check-health.sh (aztec-testnet, looping on an unresponsive reference RPC)
blocked show-status.sh's parallel 'wait' for 3.5h, hanging the whole fleet
rpc-update and holding the deploy lock. Each curl was bounded (-m 3) and the
retry loop capped (3x), but the call itself wasn't time-bounded.
- sync-status.sh: wrap each check-health.sh call in 'timeout ${HC_TIMEOUT:-30}'
  (-> exit 124 + 'timeout' status on overrun).
- show-status.sh: wrap the whole per-node sync-status.sh call in
  'timeout ${SYNC_TIMEOUT:-60}' so the parallel wait can never block forever.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

show-status.sh

@@ -19,7 +19,9 @@ any_failure=false
 # Function to run the command and handle the result
 check_sync_status() {
     local part=$1
-    result=$("$BASEPATH/sync-status.sh" "${part%.yml}")
+    # Cap the whole per-node branch (belt-and-suspenders over check-health's own cap), so no single
+    # node can ever block the 'wait' below — that is what wedged the fleet rpc-update for hours.
+    result=$(timeout "${SYNC_TIMEOUT:-60}" "$BASEPATH/sync-status.sh" "${part%.yml}")
 
     code=0
     

sync-status.sh

@@ -176,17 +176,22 @@ for path in $pathlist; do
             unset LAGGING_LAG SYNCING_LAG
         fi
 
-        # Call the health check script with RPC_URL, ref, and chain-type flag
+        # Call the health check script with RPC_URL, ref, and chain-type flag.
+        # HARD CAP each call: a single slow/unresponsive reference RPC must never hang the parallel
+        # fleet status sweep (show-status.sh waits on ALL of these). On timeout -> exit 124, reported.
+        HC_TIMEOUT="${HC_TIMEOUT:-30}"
         if $is_aztec; then
-            $BASEPATH/check-health.sh "$RPC_URL" --aztec $ref
+            timeout "$HC_TIMEOUT" $BASEPATH/check-health.sh "$RPC_URL" --aztec $ref
         elif $is_starknet; then
-            $BASEPATH/check-health.sh "$RPC_URL" --starknet $ref
+            timeout "$HC_TIMEOUT" $BASEPATH/check-health.sh "$RPC_URL" --starknet $ref
         elif $is_cosmos; then
-            $BASEPATH/check-health.sh "$RPC_URL" --cosmos $ref
+            timeout "$HC_TIMEOUT" $BASEPATH/check-health.sh "$RPC_URL" --cosmos $ref
         else
-            $BASEPATH/check-health.sh "$RPC_URL" $ref
+            timeout "$HC_TIMEOUT" $BASEPATH/check-health.sh "$RPC_URL" $ref
         fi
-        exit $?
+        rc=$?
+        [ "$rc" -eq 124 ] && echo "timeout (health check exceeded ${HC_TIMEOUT}s)"
+        exit "$rc"
     fi
 done