chore: 并入 iotlcm-worker-svr 历史到 worker-svr/（原提交 96f0f4e）

worker-svr/internal/fullsync/contract/doc.go

@@ -0,0 +1,14 @@
+// Package contract defines the shared full-sync domain and service boundaries.
+// It contains no Redis, filesystem, replay execution, or HTTP handler code.
+//
+// Legacy queue models remain in internal/queue/zset until adapters adopt this
+// package. Their existing JSON fields are retained here; new run fields are
+// optional so historical records still decode. Missing extended counters mean
+// unknown, not a reconstructed total. FailedCount is the historical terminal
+// count for a run; cleaning source failures changes PendingFailureCount only.
+//
+// Implementations must preserve these boundaries: run-local Redis keys share
+// one hash tag, global indexes do not; archive summaries never contain card
+// details; cursors are opaque and scoped to the original query; replay writes
+// are idempotent and fenced by a lease before source cleanup is allowed.
+package contract