Fix test compilation errors: add context.Background() to sqlite.New() calls

Updated all test files to pass context.Background() as the first parameter
to sqlite.New() calls to match the updated function signature.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

internal/compact/compactor_test.go

@@ -17,7 +17,7 @@ func setupTestStorage(t *testing.T) *sqlite.SQLiteStorage {
 	t.Helper()
 
 	tmpDB := t.TempDir() + "/test.db"
-	store, err := sqlite.New(tmpDB)
+	store, err := sqlite.New(context.Background(), tmpDB)
 	if err != nil {
 		t.Fatalf("failed to create storage: %v", err)
 	}