feat(mongo): add filter/sort support and fix table view editing

- Add filter and sort parameters to MongoDB find_documents across the
  full stack (driver, ops, tauri cmd, web routes, frontend API)
- Add find/sort input bar to MongoDocBrowser table view via DataGrid
  search-bar slot, matching WHERE/ORDER BY positioning
- Fix table view editing: allow cell editing when customSave is provided
  (bypasses primary key requirement for MongoDB)
- Fix replace_one WriteError 66 by removing _id from replacement doc
- Align action buttons (refresh, add row, commit) to the right in grid

src/lib/http.ts

@@ -682,8 +682,10 @@ export async function mongoFindDocuments(
   collection: string,
   skip: number,
   limit: number,
+  filter?: string,
+  sort?: string,
 ): Promise<MongoDocumentResult> {
-  return post("/api/mongo/find-documents", { connectionId, database, collection, skip, limit });
+  return post("/api/mongo/find-documents", { connectionId, database, collection, skip, limit, filter, sort });
 }
 
 export async function mongoInsertDocument(

src/lib/tauri.ts

@@ -516,8 +516,10 @@ export async function mongoFindDocuments(
   collection: string,
   skip: number,
   limit: number,
+  filter?: string,
+  sort?: string,
 ): Promise<MongoDocumentResult> {
-  return invoke("mongo_find_documents", { connectionId, database, collection, skip, limit });
+  return invoke("mongo_find_documents", { connectionId, database, collection, skip, limit, filter, sort });
 }
 
 export async function mongoInsertDocument(