Update .gitignore, remove package-lock.json, and enhance Cloudflare and Proxmox adapters

- Added lock file exclusions for pnpm in .gitignore.
- Removed obsolete package-lock.json from the api and portal directories.
- Enhanced Cloudflare adapter with additional interfaces for zones and tunnels.
- Improved Proxmox adapter error handling and logging for API requests.
- Updated Proxmox VM parameters with validation rules in the API schema.
- Enhanced documentation for Proxmox VM specifications and examples.

crossplane-provider-proxmox/pkg/controller/virtualmachine/errors.go

@@ -74,12 +74,27 @@ func categorizeError(errorStr string) ErrorCategory {
 		}
 	}
 
+	// Authentication errors (non-retryable without credential fix)
+	if strings.Contains(errorStr, "authentication") ||
+	   strings.Contains(errorStr, "unauthorized") ||
+	   strings.Contains(errorStr, "401") ||
+	   strings.Contains(errorStr, "invalid credentials") ||
+	   strings.Contains(errorStr, "forbidden") ||
+	   strings.Contains(errorStr, "403") {
+		return ErrorCategory{
+			Type:   "AuthenticationError",
+			Reason: "AuthenticationFailed",
+		}
+	}
+
 	// Network/Connection errors (retryable)
 	if strings.Contains(errorStr, "network") ||
 	   strings.Contains(errorStr, "connection") ||
 	   strings.Contains(errorStr, "timeout") ||
 	   strings.Contains(errorStr, "502") ||
-	   strings.Contains(errorStr, "503") {
+	   strings.Contains(errorStr, "503") ||
+	   strings.Contains(errorStr, "connection refused") ||
+	   strings.Contains(errorStr, "connection reset") {
 		return ErrorCategory{
 			Type:   "NetworkError",
 			Reason: "TransientNetworkFailure",