Feature/v2/shared tool hooks (#4134)

# Description of Changes

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Please provide a summary of the changes, including:

- What was changed
- Why the change was made
- Any challenges encountered

Closes #(issue_number)
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---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

---------

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

frontend/src/tools/Split.tsx

@@ -33,12 +33,11 @@ const Split = ({ onPreviewFile, onComplete, onError }: BaseToolProps) => {
   useEffect(() => {
     splitOperation.resetResults();
     onPreviewFile?.(null);
-  }, [splitParams.mode, splitParams.parameters, selectedFiles]);
+  }, [splitParams.parameters, selectedFiles]);
 
   const handleSplit = async () => {
     try {
       await splitOperation.executeOperation(
-        splitParams.mode,
         splitParams.parameters,
         selectedFiles
       );
@@ -105,14 +104,12 @@ const Split = ({ onPreviewFile, onComplete, onError }: BaseToolProps) => {
         >
           <Stack gap="sm">
             <SplitSettings
-              mode={splitParams.mode}
-              onModeChange={splitParams.setMode}
               parameters={splitParams.parameters}
               onParameterChange={splitParams.updateParameter}
               disabled={endpointLoading}
             />
 
-            {splitParams.mode && (
+            {splitParams.parameters.mode && (
               <OperationButton
                 onClick={handleSplit}
                 isLoading={splitOperation.isLoading}