fix(ci): increase digital twin startup timeout to 120s, dump logs on failure

Twilio and OpenAI specs take longer to parse on CI runners. Increase
health check wait from 60s to 120s and dump mockd logs on failure for
debugging.

Author: zach-snell

.github/workflows/ci.yaml

@@ -116,13 +116,17 @@ jobs:
         run: |
           CONFIG_DIR=$(dirname ${{ matrix.sample.config }})
           cd "$CONFIG_DIR"
-          nohup mockd start -c mockd.yaml --no-auth --log-level error > /tmp/mockd.log 2>&1 &
+          nohup mockd start -c mockd.yaml --no-auth --log-level warn > /tmp/mockd.log 2>&1 &
           echo $! > /tmp/mockd.pid
-          for i in $(seq 1 60); do
+          for i in $(seq 1 120); do
             curl -sf http://localhost:4290/health > /dev/null 2>&1 && break
             sleep 1
           done
-          curl -sf http://localhost:4290/health
+          if ! curl -sf http://localhost:4290/health; then
+            echo "mockd failed to start. Log:"
+            cat /tmp/mockd.log
+            exit 1
+          fi
           echo ""
           mockd list --json --admin-url http://localhost:4290 | python3 -c "import sys,json; d=json.load(sys.stdin); print(f'Loaded {len(d)} mocks')"