docs: archive entra materials and simplify deployment docs

docs/configuration/ENVIRONMENT_VARIABLES.md

@@ -121,57 +121,6 @@ These variables must be set for the application to function properly.
 - **Example**: `eidas-api-key-here`
 - **Used By**: Identity service, eIDAS bridge
 
-#### `ENTRA_TENANT_ID`
-- **Type**: String
-- **Required**: No
-- **Description**: Azure AD tenant ID for Microsoft Entra VerifiedID
-- **Example**: `12345678-1234-1234-1234-123456789012`
-- **Used By**: Identity service
-
-#### `ENTRA_CLIENT_ID`
-- **Type**: String
-- **Required**: No
-- **Description**: Azure AD application (client) ID for Microsoft Entra VerifiedID
-- **Example**: `87654321-4321-4321-4321-210987654321`
-- **Used By**: Identity service
-
-#### `ENTRA_CLIENT_SECRET`
-- **Type**: String
-- **Required**: No
-- **Description**: Azure AD client secret for Microsoft Entra VerifiedID
-- **Example**: `client-secret-value`
-- **Used By**: Identity service
-
-#### `ENTRA_CREDENTIAL_MANIFEST_ID`
-- **Type**: String
-- **Required**: No
-- **Description**: Credential manifest ID from Azure Verified ID portal
-- **Example**: `urn:uuid:12345678-1234-1234-1234-123456789012`
-- **Used By**: Identity service
-
-#### `AZURE_LOGIC_APPS_WORKFLOW_URL`
-- **Type**: String (URL)
-- **Required**: No
-- **Description**: Azure Logic Apps workflow URL
-- **Example**: `https://your-logic-app.azurewebsites.net`
-- **Used By**: Identity service, workflows
-
-#### `AZURE_LOGIC_APPS_ACCESS_KEY`
-- **Type**: String
-- **Required**: No
-- **Description**: Azure Logic Apps access key (if not using managed identity)
-- **Example**: `access-key-here`
-- **Used By**: Identity service, workflows
-
-#### `AZURE_LOGIC_APPS_MANAGED_IDENTITY_CLIENT_ID`
-- **Type**: String
-- **Required**: No
-- **Description**: Managed identity client ID for Logic Apps authentication
-- **Example**: `managed-identity-client-id`
-- **Used By**: Identity service, workflows
-
----
-
 ## Optional Variables
 
 ### OpenID Connect (OIDC)
@@ -509,4 +458,3 @@ All environment variables are validated at application startup using Zod schemas
 - [Architecture Documentation](../architecture/README.md)
 - [Deployment Guide](../deployment/README.md)
 - [Security Documentation](../governance/SECURITY.md)
-