fix(dashboard,server): restore code change ledger UI and enrich model schema parity and pagination

server/src/handlers/meta.rs

@@ -323,14 +323,15 @@ impl McpTool for QueryRecentChangesHandler {
     }
 
     async fn execute(&self, args: Value, state: Arc<MemoryState>) -> crate::error::Result<String> {
-        let req: QueryRecentChangesTool =
-            serde_json::from_value(args).unwrap_or(QueryRecentChangesTool {
-                namespace: None,
-                repo_name: None,
-                vcs_type: None,
-                limit: None,
-            });
+        let req: QueryRecentChangesTool = serde_json::from_value(args).unwrap_or(QueryRecentChangesTool {
+            namespace: None,
+            repo_name: None,
+            vcs_type: None,
+            limit: None,
+            offset: None,
+        });
         let limit = req.limit.unwrap_or(50);
+        let offset = req.offset.unwrap_or(0);
         let data = state.code.ledger.read_with(|l| {
             let filtered: Vec<_> = l
                 .iter()
@@ -357,6 +358,7 @@ impl McpTool for QueryRecentChangesHandler {
                     }
                     true
                 })
+                .skip(offset)
                 .take(limit)
                 .cloned()
                 .collect();