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 <you@example.com>

frontend/src/components/tools/split/SplitSettings.tsx

@@ -3,6 +3,7 @@ import { useTranslation } from 'react-i18next';
 import { SPLIT_MODES, SPLIT_TYPES, type SplitMode, type SplitType } from '../../../constants/splitConstants';
 
 export interface SplitParameters {
+  mode: SplitMode | '';
   pages: string;
   hDiv: string;
   vDiv: string;
@@ -15,16 +16,12 @@ export interface SplitParameters {
 }
 
 export interface SplitSettingsProps {
-  mode: SplitMode | '';
-  onModeChange: (mode: SplitMode | '') => void;
   parameters: SplitParameters;
   onParameterChange: (parameter: keyof SplitParameters, value: string | boolean) => void;
   disabled?: boolean;
 }
 
 const SplitSettings = ({
-  mode,
-  onModeChange,
   parameters,
   onParameterChange,
   disabled = false
@@ -125,8 +122,8 @@ const SplitSettings = ({
       <Select
         label="Choose split method"
         placeholder="Select how to split the PDF"
-        value={mode}
-        onChange={(v) => v && onModeChange(v)}
+        value={parameters.mode}
+        onChange={(v) => v && onParameterChange('mode', v)}
         disabled={disabled}
         data={[
           { value: SPLIT_MODES.BY_PAGES, label: t("split.header", "Split by Pages") + " (e.g. 1,3,5-10)" },
@@ -137,10 +134,10 @@ const SplitSettings = ({
       />
 
       {/* Parameter Form */}
-      {mode === SPLIT_MODES.BY_PAGES && renderByPagesForm()}
-      {mode === SPLIT_MODES.BY_SECTIONS && renderBySectionsForm()}
-      {mode === SPLIT_MODES.BY_SIZE_OR_COUNT && renderBySizeOrCountForm()}
-      {mode === SPLIT_MODES.BY_CHAPTERS && renderByChaptersForm()}
+      {parameters.mode === SPLIT_MODES.BY_PAGES && renderByPagesForm()}
+      {parameters.mode === SPLIT_MODES.BY_SECTIONS && renderBySectionsForm()}
+      {parameters.mode === SPLIT_MODES.BY_SIZE_OR_COUNT && renderBySizeOrCountForm()}
+      {parameters.mode === SPLIT_MODES.BY_CHAPTERS && renderByChaptersForm()}
     </Stack>
   );
 }