Fix staticcheck lint failures blocking CI

cmd/shiftlock/main.go

@@ -244,7 +244,7 @@ func cmdCapabilities(args []string) error {
 
 func cmdSecurity(args []string) error {
 	if len(args) == 0 || args[0] != "scan" {
-		return fmt.Errorf("usage: shiftlock security scan [-format text|json|sarif] [-production] ...")
+		return fmt.Errorf("usage: shiftlock security scan [-format text|json|sarif] [-production]")
 	}
 	fs := flag.NewFlagSet("security scan", flag.ExitOnError)
 	format := fs.String("format", "text", "text|json|sarif")
@@ -369,7 +369,7 @@ func cmdIncident(args []string) error {
 
 func cmdSnapshot(args []string) error {
 	if len(args) == 0 {
-		return fmt.Errorf("usage: shiftlock snapshot create|diff ...")
+		return fmt.Errorf("usage: shiftlock snapshot create|diff")
 	}
 	switch args[0] {
 	case "create":

resource/database/postgres/postgres.go

@@ -9,7 +9,6 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
-	"sync"
 	"sync/atomic"
 	"time"
 
@@ -52,8 +51,7 @@ type Config struct {
 
 // Resource implements resource.Resource for PostgreSQL (or any SQL DB).
 type Resource struct {
-	cfg    Config
-	mu     sync.Mutex
+	cfg     Config
 	drained atomic.Bool
 }
 

resource/ratelimit/ratelimit_test.go

@@ -1,6 +1,7 @@
 package ratelimit
 
 import (
+	"context"
 	"testing"
 
 	"github.com/theworker02/shiftlock/resource"
@@ -26,7 +27,7 @@ func TestTokenBucket(t *testing.T) {
 	}
 	r.Release()
 	r.Release()
-	snap, _ := r.Snapshot(nil)
+	snap, _ := r.Snapshot(context.TODO())
 	if snap["rejected"] == "0" {
 		t.Fatal("expected rejection counted")
 	}