feat(v2.0): Auto-discovery, correzione bug critici, e documentazione completa

🆕 Funzionalità Auto-Discovery
- Aggiunto metodo AutoDiscoverBufferSizes() per rilevamento automatico QPIGS/QPIRI/QMOD/QPIWS
- Supporto variabili d'ambiente (INVERTER_DEVICE, MQTT_SERVER, etc.)
- Caching persistente buffer sizes in /cache/inverter.conf.cache
- Flag -a/--auto-discover per modalità auto-detection

🐛 Bug Fixes Critici
- **Parsing interi**: Aggiunta attemptAddSettingInt() con stoi() invece di stof()
  - Fix: stof('98') = 98.0f → 97 (int), ora stoi('98') = 98 direttamente
  - Applicato a: qpiri, qpiws, qmod, qpigs
- **Thread sync**: Aggiunto ups_qpiws_changed a main loop e condizione exit poll()
  - Fix: loop principale controllava solo 3 flag su 4, causava hang
  - Fix: thread poll() non usciva in runOnce perché mancava controllo QPIWS
- **Config accuracy**: Corretti buffer sizes (qpiri: 98→103, qpiws: 36→40)
  - Rimosso sources/inverter-cli/inverter.conf che sovrascriveva config globale
  - Validato con test: inverter_poller -1 completa in 6s con JSON completo

📚 Documentazione Completa
- Creato documentation/CODE_ARCHITECTURE.md (38KB)
  - Mappa logica variabili globali
  - Flusso esecuzione main() con diagrammi ASCII
  - Sequence diagram classe cInverter (poll, query, auto-discovery)
  - Thread synchronization diagrams
  - MQTT integration bash scripts flow
  - Mappa concettuale 5-layer system architecture
  - Error handling e performance optimizations
- Organizzati file .md in documentation/ (AUTO_DISCOVERY, IMPLEMENTATION, QUICKSTART, DEBUG)
- Aggiornato README.md con sezione v2.0 e indice documentazione
- Aggiornato .github/copilot-instructions.md con novità v2.0

🔧 Miglioramenti Build & CI/CD
- Gitea Actions per build multi-arch (arm/v6, arm/v7, arm64, amd64, 386)
- Configurazione VS Code completa (tasks, launch, debug GDB)
- Script test-autodiscovery.sh e test-device.sh

✅ Testing Validato
- inverter_poller -1 completa in 6 secondi
- Output JSON completo con tutte le metriche
- Exit pulito senza timeout (exit code 0)
- Tutte le 4 query QMOD/QPIGS/QPIRI/QPIWS funzionanti

.gitea/workflows/docker-build.yml

@@ -0,0 +1,69 @@
+name: Build Docker Image for Raspberry Pi
+
+on:
+  push:
+    branches:
+      - main
+      - master
+      - develop
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: linux/arm/v6,linux/arm/v7,linux/arm64
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ${{ secrets.DOCKER_USERNAME }}/ha-voltronic-mqtt
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Login to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile.multiarch
+          platforms: linux/arm/v6,linux/arm/v7,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          build-args: |
+            BUILD_DATE=${{ github.event.repository.updated_at }}
+            VERSION=${{ steps.meta.outputs.version }}
+            VCS_REF=${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Image digest
+        run: echo ${{ steps.meta.outputs.tags }}

.gitea/workflows/docker-cleanup.yml

@@ -0,0 +1,29 @@
+name: Docker Image Cleanup
+
+on:
+  schedule:
+    # Esegui ogni domenica alle 2:00 AM
+    - cron: '0 2 * * 0'
+  workflow_dispatch:
+
+jobs:
+  cleanup-old-images:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Cleanup old development images
+        run: |
+          echo "Pulizia delle immagini Docker vecchie (mantenere solo le ultime 10 versioni)"
+          # Questo script può essere personalizzato in base alle tue esigenze
+          # Per ora è solo un placeholder per future implementazioni
+          echo "Cleanup completato"

.gitea/workflows/docker-test.yml

@@ -0,0 +1,46 @@
+name: Test Docker Build
+
+on:
+  pull_request:
+    branches:
+      - main
+      - master
+      - develop
+
+jobs:
+  test-build:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: linux/arm/v7,linux/arm64
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Test build for ARM platforms
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile.multiarch
+          platforms: linux/arm/v7,linux/arm64
+          push: false
+          build-args: |
+            BUILD_DATE=${{ github.event.repository.updated_at }}
+            VERSION=test
+            VCS_REF=${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Test build dev Dockerfile
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile.dev
+          platforms: linux/arm/v7
+          push: false