feat(core): entry 历史附带关联 secret 密文快照，rollback 可恢复 N:N 与密文

- db: metadata_with_secret_snapshot / strip / parse 辅助
- add/update/delete/rollback 在写 entries_history 前合并快照
- rollback: 按历史快照同步 entry_secrets、更新或插入 secrets
- 满足 clippy collapsible_if

crates/secrets-core/src/service/update.rs

@@ -112,6 +112,15 @@ pub async fn run(
         }
     };
 
+    let history_metadata =
+        match db::metadata_with_secret_snapshot(&mut tx, row.id, &row.metadata).await {
+            Ok(v) => v,
+            Err(e) => {
+                tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                row.metadata.clone()
+            }
+        };
+
     if let Err(e) = db::snapshot_entry_history(
         &mut tx,
         db::EntrySnapshotParams {
@@ -123,7 +132,7 @@ pub async fn run(
             version: row.version,
             action: "update",
             tags: &row.tags,
-            metadata: &row.metadata,
+            metadata: &history_metadata,
         },
     )
     .await
@@ -481,6 +490,15 @@ pub async fn update_fields_by_id(
         }
     };
 
+    let history_metadata =
+        match db::metadata_with_secret_snapshot(&mut tx, row.id, &row.metadata).await {
+            Ok(v) => v,
+            Err(e) => {
+                tracing::warn!(error = %e, "failed to build secret snapshot for entry history");
+                row.metadata.clone()
+            }
+        };
+
     if let Err(e) = db::snapshot_entry_history(
         &mut tx,
         db::EntrySnapshotParams {
@@ -492,7 +510,7 @@ pub async fn update_fields_by_id(
             version: row.version,
             action: "update",
             tags: &row.tags,
-            metadata: &row.metadata,
+            metadata: &history_metadata,
         },
     )
     .await