Fix TypeScript compilation errors in frontend components

- Remove unused variables in ApplicationInfo, ArchitectureDebugPage
- Fix type errors in Dashboard, GovernanceAnalysis, GovernanceModelHelper (PageHeader description prop)
- Add null checks and explicit types in DataValidationDashboard
- Fix ObjectDetailModal type errors for _jiraCreatedAt and Date constructor
- Remove unused imports and variables in SchemaConfigurationSettings
- Update PageHeader to accept string | ReactNode for description prop

docs/AZURE-SERVICE-CONNECTION-TROUBLESHOOTING.md

@@ -1,5 +1,60 @@
 # Azure DevOps Service Connection - Troubleshooting
 
+## 🔴 Probleem: "Could not fetch access token for Managed Service Principal" (MSI Error)
+
+**Error Message:**
+```
+Could not fetch access token for Managed Service Principal. 
+Please configure Managed Service Identity (MSI) for virtual machine
+```
+
+**Oorzaak:**
+De service connection is geconfigureerd om Managed Service Identity (MSI) te gebruiken, maar dit werkt **niet** met Azure DevOps Services (cloud). MSI werkt alleen met Azure DevOps Server (on-premises) met Managed Identity geconfigureerd.
+
+**✅ Oplossing: Herconfigureer Service Connection met Service Principal**
+
+### Stap 1: Verwijder Bestaande Service Connection
+
+1. Ga naar **Azure DevOps** → **Project Settings** → **Service connections**
+2. Zoek de service connection: `zuyderland-cmdb-acr-connection`
+3. Klik op **...** (three dots) → **Delete**
+4. Bevestig verwijdering
+
+### Stap 2: Maak Nieuwe Service Connection met Service Principal
+
+1. **Project Settings** → **Service connections** → **New service connection**
+2. Kies **"Docker Registry"**
+3. Kies **"Azure Container Registry"**
+4. **Belangrijk**: Selecteer **"Service Principal"** als Authentication type (NIET Managed Identity!)
+5. Vul in:
+   - **Azure subscription**: Selecteer je subscription
+   - **Azure container registry**: Selecteer je ACR (`zdlasacr`)
+   - **Service connection name**: `zuyderland-cmdb-acr-connection`
+6. Klik **"Save"** (of **"Verify and save"**)
+
+**✅ Dit zou nu moeten werken!**
+
+### Alternatief: Gebruik "Others" Optie met Admin Credentials
+
+Als de Azure Container Registry optie nog steeds problemen geeft:
+
+1. **Kies "Docker Registry" → "Others"**
+2. **Vul handmatig in:**
+   - **Docker Registry**: `zdlasacr.azurecr.io`
+   - **Docker ID**: (ACR admin username)
+   - **Docker Password**: (ACR admin password)
+
+3. **Haal ACR admin credentials op:**
+   ```bash
+   az acr credential show --name zdlasacr
+   ```
+   Gebruik `username` en `passwords[0].value` uit de output.
+
+4. **Service connection name**: `zuyderland-cmdb-acr-connection`
+5. **Save**
+
+---
+
 ## 🔴 Probleem: "Loading Registries..." blijft hangen
 
 Als de Azure Container Registry dropdown blijft laden zonder resultaten, probeer deze oplossingen: