fix(lint): clear the staticcheck findings

Drop the RealIP middleware: the worker listens on 127.0.0.1 only, and RealIP is deprecated because a client can set its own address. Log the restart error directly, since Restart only returns on failure. Remove an unused slice in a test and pass a real context instead of nil. staticcheck now reports nothing.

internal/db/gorm/observation_store_test.go

@@ -500,15 +500,13 @@ func TestObservationStore_CleanupOldObservations(t *testing.T) {
 
 	// Store observations beyond the limit WITHOUT async cleanup
 	// We disable async cleanup by not setting cleanupFunc
-	var allIDs []int64
 	for i := 0; i < 105; i++ {
 		observation := &models.ParsedObservation{
 			Type:  models.ObsTypeDiscovery,
 			Title: "Observation",
 		}
-		id, _, err := observationStore.StoreObservation(ctx, "claude-1", "test-project", observation, i, 10)
+		_, _, err := observationStore.StoreObservation(ctx, "claude-1", "test-project", observation, i, 10)
 		require.NoError(t, err)
-		allIDs = append(allIDs, id)
 		time.Sleep(2 * time.Millisecond) // Ensure different timestamps
 	}
 

internal/worker/handlers_update.go

@@ -218,9 +218,8 @@ func (s *Service) handleUpdateRestart(w http.ResponseWriter, r *http.Request) {
 
 	// Restart in background after response is sent
 	go func() {
-		if err := s.updater.Restart(); err != nil {
-			log.Error().Err(err).Msg("Failed to restart worker")
-		}
+		// Restart only returns when the new worker failed to start.
+		log.Error().Err(s.updater.Restart()).Msg("Failed to restart worker")
 	}()
 }
 
@@ -244,8 +243,7 @@ func (s *Service) handleRestart(w http.ResponseWriter, r *http.Request) {
 	go func() {
 		// Small delay to ensure response is sent
 		time.Sleep(100 * time.Millisecond)
-		if err := s.updater.Restart(); err != nil {
-			log.Error().Err(err).Msg("Failed to restart worker")
-		}
+		// Restart only returns when the new worker failed to start.
+		log.Error().Err(s.updater.Restart()).Msg("Failed to restart worker")
 	}()
 }

internal/worker/sdk/dedup_test.go

@@ -1,6 +1,7 @@
 package sdk
 
 import (
+	"context"
 	"testing"
 
 	"github.com/lukaszraczylo/claude-mnemonic/internal/vector/sqlitevec"
@@ -121,7 +122,7 @@ func TestCheckVectorDeduplication_NilClient(t *testing.T) {
 		Narrative: "Some narrative text",
 	}
 
-	result := p.checkVectorDeduplication(nil, obs, "test-project")
+	result := p.checkVectorDeduplication(context.Background(), obs, "test-project")
 	if result.Action != "insert" {
 		t.Errorf("expected Action='insert' when vectorClient is nil, got %q", result.Action)
 	}
@@ -136,7 +137,7 @@ func TestCheckVectorDeduplication_EmptySearchText(t *testing.T) {
 		// All empty fields
 	}
 
-	result := p.checkVectorDeduplication(nil, obs, "test-project")
+	result := p.checkVectorDeduplication(context.Background(), obs, "test-project")
 	if result.Action != "insert" {
 		t.Errorf("expected Action='insert' for empty observation, got %q", result.Action)
 	}

internal/worker/service.go

@@ -1213,7 +1213,6 @@ func (s *Service) setupMiddleware() {
 
 	s.router.Use(middleware.Logger)
 	s.router.Use(middleware.Recoverer)
-	s.router.Use(middleware.RealIP)
 
 	// Add security headers (X-Frame-Options, X-Content-Type-Options, CSP, etc.)
 	s.router.Use(SecurityHeaders)