Add edit table of contents tool to React UI (#4917)

## Summary
- add a dedicated edit table of contents tool to the React UI, complete
with bookmark editor, import/export actions, and parameter handling
- register the tool in the translated registry and extend the English
translations with the new strings
- wire up the backend endpoints through a new operation hook and
form-data serialization helpers

## Testing
- ./gradlew build

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[Codex
Task](https://chatgpt.com/codex/tasks/task_b_691a4a87a9c4832899ecd1c55989f27f)

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Co-authored-by: Reece Browne <[email protected]>

app/core/src/main/java/stirling/software/SPDF/controller/api/EditTableOfContentsController.java

@@ -29,7 +29,6 @@ import lombok.RequiredArgsConstructor;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 
-import stirling.software.SPDF.config.swagger.JsonDataResponse;
 import stirling.software.SPDF.config.swagger.StandardPdfResponse;
 import stirling.software.SPDF.model.api.EditTableOfContentsRequest;
 import stirling.software.common.annotations.AutoJobPostMapping;
@@ -49,13 +48,12 @@ public class EditTableOfContentsController {
     @AutoJobPostMapping(
             value = "/extract-bookmarks",
             consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
-    @JsonDataResponse
     @Operation(
             summary = "Extract PDF Bookmarks",
             description = "Extracts bookmarks/table of contents from a PDF document as JSON.")
     @ResponseBody
-    public List<Map<String, Object>> extractBookmarks(@RequestParam("file") MultipartFile file)
-            throws Exception {
+    public ResponseEntity<List<Map<String, Object>>> extractBookmarks(
+            @RequestParam("file") MultipartFile file) throws Exception {
         PDDocument document = null;
         try {
             document = pdfDocumentFactory.load(file);
@@ -63,10 +61,10 @@ public class EditTableOfContentsController {
 
             if (outline == null) {
                 log.info("No outline/bookmarks found in PDF");
-                return new ArrayList<>();
+                return ResponseEntity.ok(new ArrayList<>());
             }
 
-            return extractBookmarkItems(document, outline);
+            return ResponseEntity.ok(extractBookmarkItems(document, outline));
         } finally {
             if (document != null) {
                 document.close();