Remove file log store memory mirror

platform/service/log_ingest_test.go

@@ -1,6 +1,7 @@
 package service
 
 import (
+	"os"
 	"path/filepath"
 	"strings"
 	"sync"
@@ -554,6 +555,37 @@ func TestFileLogBodyStoreReloadsVerbatimLongLogLine(t *testing.T) {
 	}
 }
 
+func TestFileLogBodyStoreStartupSkipsBodyLoadAndQueriesFromCursorSegment(t *testing.T) {
+	rootDir := filepath.Join(t.TempDir(), "logs")
+	store, err := NewFileLogBodyStore(rootDir)
+	if err != nil {
+		t.Fatalf("create file log store: %v", err)
+	}
+	first := []domain.LogEntry{{Seq: 1, Timestamp: time.Date(2026, 7, 3, 12, 0, 1, 0, time.UTC), Line: "old"}}
+	second := []domain.LogEntry{{Seq: 2, Timestamp: time.Date(2026, 7, 3, 12, 0, 2, 0, time.UTC), Line: "new"}}
+	if err := store.AppendBatch("log-1", domain.LogBatchRecord{Checksum: checksumForEntries(t, first), FirstSeq: 1, LastSeq: 1, Entries: first}); err != nil {
+		t.Fatalf("append first segment: %v", err)
+	}
+	if err := store.AppendBatch("log-1", domain.LogBatchRecord{Checksum: checksumForEntries(t, second), FirstSeq: 2, LastSeq: 2, Entries: second}); err != nil {
+		t.Fatalf("append second segment: %v", err)
+	}
+	if err := os.WriteFile(store.segmentPath("log-1", 1), []byte("{not-json\n"), 0o600); err != nil {
+		t.Fatalf("corrupt old segment: %v", err)
+	}
+
+	reloaded, err := NewFileLogBodyStore(rootDir)
+	if err != nil {
+		t.Fatalf("reload should not read all log bodies: %v", err)
+	}
+	selected, nextSeq, err := reloaded.Query("log-1", 1, 1)
+	if err != nil {
+		t.Fatalf("query from cursor segment: %v", err)
+	}
+	if len(selected) != 1 || selected[0].Seq != 2 || selected[0].Line != "new" || nextSeq != 2 {
+		t.Fatalf("unexpected cursor query: entries=%+v next=%d", selected, nextSeq)
+	}
+}
+
 func newRegisteredLogIngestService(t *testing.T) (*CoreService, string) {
 	t.Helper()
 	svc := newTestCoreService()