fake scan to scanner effect (#3954)

# 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.

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

@@ -33,7 +33,7 @@ import jakarta.validation.Valid;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
-import stirling.software.SPDF.model.api.misc.FakeScanRequest;
+import stirling.software.SPDF.model.api.misc.ScannerEffectRequest;
 import stirling.software.common.service.CustomPDFDocumentFactory;
 import stirling.software.common.util.WebResponseUtils;
 
@@ -42,7 +42,7 @@ import stirling.software.common.util.WebResponseUtils;
 @Tag(name = "Misc", description = "Miscellaneous PDF APIs")
 @RequiredArgsConstructor
 @Slf4j
-public class FakeScanController {
+public class ScannerEffectController {
 
     private final CustomPDFDocumentFactory pdfDocumentFactory;
     private static final Random RANDOM = new Random();
@@ -52,12 +52,12 @@ public class FakeScanController {
     private static final int MAX_IMAGE_HEIGHT = 8192;
     private static final long MAX_IMAGE_PIXELS = 16_777_216; // 4096x4096
 
-    @PostMapping(value = "/fake-scan", consumes = "multipart/form-data")
+    @PostMapping(value = "/scanner-effect", consumes = "multipart/form-data")
     @Operation(
-            summary = "Convert PDF to look like a scanned document",
+            summary = "Apply scanner effect to PDF",
             description =
-                    "Applies various effects to make a PDF look like it was scanned, including rotation, noise, and edge softening. Input:PDF Output:PDF Type:SISO")
-    public ResponseEntity<byte[]> fakeScan(@Valid @ModelAttribute FakeScanRequest request)
+                    "Applies various effects to simulate a scanned document, including rotation, noise, and edge softening. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> scannerEffect(@Valid @ModelAttribute ScannerEffectRequest request)
             throws IOException {
         MultipartFile file = request.getFileInput();
 
@@ -80,7 +80,7 @@ public class FakeScanController {
         float noise = request.getNoise();
         boolean yellowish = request.isYellowish();
         int resolution = request.getResolution();
-        FakeScanRequest.Colorspace colorspace = request.getColorspace();
+        ScannerEffectRequest.Colorspace colorspace = request.getColorspace();
 
         try (PDDocument document = pdfDocumentFactory.load(file)) {
             PDDocument outputDocument = new PDDocument();
@@ -130,7 +130,7 @@ public class FakeScanController {
 
                 // 1. Convert to grayscale or keep color
                 BufferedImage processed;
-                if (colorspace == FakeScanRequest.Colorspace.grayscale) {
+                if (colorspace == ScannerEffectRequest.Colorspace.grayscale) {
                     processed =
                             new BufferedImage(
                                     image.getWidth(),
@@ -316,7 +316,7 @@ public class FakeScanController {
             String outputFilename =
                     Filenames.toSimpleFileName(file.getOriginalFilename())
                                     .replaceFirst("[.][^.]+$", "")
-                            + "_scanned.pdf";
+                            + "_scanner_effect.pdf";
 
             return WebResponseUtils.bytesToWebResponse(
                     outputStream.toByteArray(), outputFilename, MediaType.APPLICATION_PDF);

app/core/src/main/java/stirling/software/SPDF/controller/web/OtherWebController.java

@@ -70,11 +70,11 @@ public class OtherWebController {
         return "misc/add-page-numbers";
     }
 
-    @GetMapping("/fake-scan")
+    @GetMapping("/scanner-effect")
     @Hidden
-    public String fakeScanForm(Model model) {
-        model.addAttribute("currentPage", "fake-scan");
-        return "misc/fake-scan";
+    public String scannerEffectForm(Model model) {
+        model.addAttribute("currentPage", "scanner-effect");
+        return "misc/scanner-effect";
     }
 
     @GetMapping("/extract-images")

app/core/src/main/java/stirling/software/SPDF/model/api/misc/ScannerEffectRequest.java

@@ -11,7 +11,7 @@ import lombok.EqualsAndHashCode;
 
 @Data
 @EqualsAndHashCode
-public class FakeScanRequest {
+public class ScannerEffectRequest {
     public enum Quality {
         low,
         medium,