Optimize CI workflow: move Playwright install after boot check and collect serial output

Changes:
- Move "Install Playwright browsers" step after boot validation
  - Saves time if boot check fails (no need to install Playwright)
  - Playwright only installed if firmware boots successfully
- Collect serial output from boot check scenario
  - Separate serial output (stdout) to boot-check-serial.log
  - Keep CLI diagnostics (stderr) in boot-check.log
  - Display both logs on success and failure
  - Better debugging with separate log streams

Benefits:
- Faster feedback on boot failures (skip Playwright install)
- More comprehensive boot check debugging
- Clearer separation of concerns in logs

Co-authored-by: softhack007 <[email protected]>

Author: Copilot

.github/workflows/wokwi-test.yml

@@ -66,9 +66,6 @@ jobs:
       - name: Prepare firmware for Wokwi
         run: ./test/wokwi/prepare-firmware.sh esp32_V4_wokwi_debug
 
-      - name: Install Playwright browsers
-        run: npx playwright install --with-deps chromium
-
       - name: Debug - Verify token is set
         run: |
           if [ -z "$WOKWI_CLI_TOKEN" ]; then
@@ -99,17 +96,24 @@ jobs:
           
           # Run boot check with increased timeout to account for startup time
           # Using 30 second timeout for a 15 second scenario to allow for network delays
-          if wokwi-cli --timeout 30000 --scenario scenarios/boot-check.yaml . > logs/boot-check.log 2>&1; then
+          # Capture serial output (stdout) and Wokwi CLI diagnostics (stderr) separately
+          if wokwi-cli --timeout 30000 --scenario scenarios/boot-check.yaml . > logs/boot-check-serial.log 2>logs/boot-check.log; then
             echo "✅ Boot check passed - firmware boots without crashes"
             echo ""
-            echo "=== Boot check log (last 100 lines) ==="
-            tail -100 logs/boot-check.log
+            echo "=== Boot check serial output (last 50 lines) ==="
+            tail -50 logs/boot-check-serial.log
+            echo ""
+            echo "=== Boot check CLI log (last 50 lines) ==="
+            tail -50 logs/boot-check.log
           else
             EXIT_CODE=$?
             echo "❌ Boot check failed with exit code $EXIT_CODE"
             echo ""
-            echo "=== Boot check log ==="
+            echo "=== Boot check CLI log ==="
             cat logs/boot-check.log
+            echo ""
+            echo "=== Boot check serial output ==="
+            cat logs/boot-check-serial.log
             
             # Check if it's a WebSocket connection error (code 1006)
             if grep -q "code 1006" logs/boot-check.log || grep -q "Connection.*closed" logs/boot-check.log; then
@@ -125,6 +129,9 @@ jobs:
             fi
           fi
 
+      - name: Install Playwright browsers
+        run: npx playwright install --with-deps chromium
+
       - name: Start Wokwi simulator in background
         env:
           WOKWI_CLI_TOKEN: ${{ secrets.WOKWI_CLI_TOKEN }}