style: apply go fmt to billing commands

- Add trailing newlines to files
- Fix struct field alignment in resourceInfo
- Fix string concatenation spacing

Author: mgajda

internal/commands/billing/billing.go

@@ -16,4 +16,4 @@ type billingCommand struct {
 // InitCommand implements Command.InitCommand
 func (b *billingCommand) InitCommand() {
 	b.Cobra().Aliases = []string{"bill"}
-}
+}

internal/commands/billing/list.go

@@ -34,12 +34,12 @@ type listCommand struct {
 
 // resourceInfo holds resource information
 type resourceInfo struct {
-	Type       string
-	UUID       string
-	Name       string
-	Amount     float64
-	Hours      int
-	Currency   string
+	Type     string
+	UUID     string
+	Name     string
+	Amount   float64
+	Hours    int
+	Currency string
 }
 
 // InitCommand implements commands.Command
@@ -75,7 +75,7 @@ func (c *listCommand) ExecuteWithoutArguments(exec commands.Executor) (output.Ou
 	}
 
 	// Fetch resource names
-	exec.PushProgressUpdateMessage(msg, msg + " (fetching resource names)")
+	exec.PushProgressUpdateMessage(msg, msg+" (fetching resource names)")
 
 	// Get all servers
 	servers, err := exec.Server().GetServers(exec.Context())
@@ -368,4 +368,4 @@ func (c *listCommand) buildOutput(resources []resourceInfo, totalAmount float64,
 // MaximumExecutions implements commands.Command
 func (c *listCommand) MaximumExecutions() int {
 	return 1
-}
+}

internal/commands/billing/period.go

@@ -152,4 +152,4 @@ func parsePeriod(period string) (string, string, error) {
 	}
 
 	return "", "", fmt.Errorf("unknown period format: %s. Use formats like 'month', 'day', 'quarter', 'year', '3days', '2months', 'last month', or 'YYYY-MM'", period)
-}
+}

internal/commands/billing/summary.go

@@ -296,4 +296,4 @@ func buildDetailedOutput(summary *upcloud.BillingSummary, month string) output.O
 // MaximumExecutions implements commands.Command
 func (c *summaryCommand) MaximumExecutions() int {
 	return 1
-}
+}