feat: Increase timeout for backend E2E tests; add logging for backend startup and show logs on failure; mark subproject commits as dirty

.github/workflows/backend-e2e-tests.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   e2e:
     runs-on: ubuntu-latest
-    timeout-minutes: 20
+    timeout-minutes: 30
 
     env:
       QEMU_RELEASE_URL: https://github.com/davidmonterocrespo24/velxio/releases/download/qemu-prebuilt
@@ -38,7 +38,11 @@ jobs:
           chmod +x libqemu-xtensa.so libqemu-riscv32.so
           ls -lh .
 
-      # ── arduino-cli + ESP32 core ───────────────────────────────────────────────
+          # Report missing shared-library dependencies (if any)
+          echo "=== ldd libqemu-xtensa.so ==="
+          ldd libqemu-xtensa.so || true
+
+      # ── arduino-cli + ESP32 core + required libraries ──────────────────────────
       - name: Install arduino-cli
         run: |
           curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh \
@@ -47,10 +51,12 @@ jobs:
       - name: Cache arduino-cli cores and libraries
         uses: actions/cache@v4
         with:
-          path: ~/.arduino15
-          key: arduino-cores-esp32-${{ runner.os }}-v1
+          path: |
+            ~/.arduino15
+            ~/Arduino/libraries
+          key: arduino-cores-esp32-libs-${{ runner.os }}-v2
 
-      - name: Install ESP32 arduino core
+      - name: Install ESP32 arduino core and required libraries
         run: |
           arduino-cli config init --overwrite
           arduino-cli config add board_manager.additional_urls \
@@ -58,6 +64,13 @@ jobs:
           arduino-cli core update-index
           arduino-cli core install esp32:esp32
 
+          # Libraries needed by the e2e test sketches
+          # DHT22 test needs: DHT sensor library
+          # MPU6050 test needs: Adafruit MPU6050 + Adafruit Unified Sensor
+          arduino-cli lib install "DHT sensor library"
+          arduino-cli lib install "Adafruit MPU6050"
+          arduino-cli lib install "Adafruit Unified Sensor"
+
       # ── Python + backend dependencies ─────────────────────────────────────────
       - name: Set up Python 3.11
         uses: actions/setup-python@v5
@@ -83,9 +96,8 @@ jobs:
       - name: Start backend server
         run: |
           cd backend
-          QEMU_ESP32_LIB=$QEMU_DIR/libqemu-xtensa.so \
-          QEMU_RISCV32_LIB=$QEMU_DIR/libqemu-riscv32.so \
-          uvicorn app.main:app --port 8001 &
+          uvicorn app.main:app --port 8001 --log-level info \
+            > /tmp/backend.log 2>&1 &
           echo "Backend PID: $!"
         env:
           QEMU_ESP32_LIB: /opt/velxio-qemu/libqemu-xtensa.so
@@ -94,35 +106,41 @@ jobs:
       - name: Wait for backend to be ready
         run: |
           echo "Waiting for backend on port 8001..."
-          for i in $(seq 1 30); do
-            if curl -sf http://localhost:8001/docs > /dev/null 2>&1; then
+          for i in $(seq 1 60); do
+            if curl -sf http://localhost:8001/health > /dev/null 2>&1; then
               echo "Backend is up after ${i}s"
-              break
+              exit 0
             fi
             sleep 1
           done
-          curl -sf http://localhost:8001/docs > /dev/null || (echo "Backend failed to start" && exit 1)
+          echo "=== Backend failed to start — last 80 lines of log: ==="
+          tail -80 /tmp/backend.log || echo "(no log file)"
+          exit 1
 
       # ── Run e2e tests ─────────────────────────────────────────────────────────
       #
-      # These tests compile real firmware via the backend and run full simulations
-      # over WebSocket. Each test has a generous timeout because compilation +
-      # firmware boot takes 30-60 s.
+      # These tests compile real firmware via arduino-cli and run full simulations
+      # over WebSocket using libqemu-xtensa.so. Each test has a generous timeout
+      # because ESP32 firmware compilation + QEMU boot takes 30-90 s.
       #
-      # NOT run here (require Windows DLLs, not .so):
-      #   test/backend/integration/  — uses libqemu-xtensa.dll (Windows only)
-      #
-      - name: Run DHT22 e2e test
-        run: node test/backend/e2e/test_dht22_simulation.mjs --timeout=60
-        env:
-          BACKEND_URL: http://localhost:8001
-
       - name: Run HC-SR04 e2e test
         run: node test/backend/e2e/test_hcsr04_simulation.mjs --timeout=75
         env:
           BACKEND_URL: http://localhost:8001
 
-      - name: Run MPU-6050 e2e test
-        run: node test/backend/e2e/test_mpu6050_simulation.mjs --timeout=60
+      - name: Run DHT22 e2e test
+        run: node test/backend/e2e/test_dht22_simulation.mjs --timeout=90
         env:
           BACKEND_URL: http://localhost:8001
+
+      - name: Run MPU-6050 e2e test
+        run: node test/backend/e2e/test_mpu6050_simulation.mjs --timeout=90
+        env:
+          BACKEND_URL: http://localhost:8001
+
+      # ── Always dump backend logs so failures are diagnosable ──────────────────
+      - name: Show backend logs
+        if: always()
+        run: |
+          echo "=== Backend log (last 150 lines) ==="
+          tail -150 /tmp/backend.log || echo "(no log file)"