diff --git a/AGENTS.md b/AGENTS.md
index a93c25d..7909b61 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -283,3 +283,8 @@ final class HealthTest extends CIUnitTestCase
 - PHP 8.1 or higher
 - Extensions required: `intl`, `mbstring`, `json`
 - MySQLi database driver by default
+
+## Agent Preferences
+
+- Prefer Serena tools (`serena_get_symbols_overview`, `serena_find_symbol`, `serena_search_for_pattern`) for codebase exploration before falling back to `Read`, `Glob`, or `Grep`.
+- Reserve `bash` for execution tasks (git, composer, php spark, etc.) and use Serena output to avoid unnecessary token use.
diff --git a/app/Controllers/Activities.php b/app/Controllers/Activities.php
index b0a27ca..c4a0ff8 100644
--- a/app/Controllers/Activities.php
+++ b/app/Controllers/Activities.php
@@ -1026,10 +1026,15 @@ class Activities extends Controller {
 				echo 'Error: ' . $_FILES['file']['error'] . '<br>';
 			}
 			else {
-				move_uploaded_file($_FILES['file']['tmp_name'], 'upload/' . $_FILES['file']['name'] );
+				$subfolder = date('Y/m');
+				$uploadDir = FCPATH . "upload/$subfolder/";
+				if (!is_dir($uploadDir)) {
+					mkdir($uploadDir, 0755, true);
+				}
+				move_uploaded_file($_FILES['file']['tmp_name'], $uploadDir . $_FILES['file']['name']);
 			}
 		}	
-    }
+	}
 
 	public function act_content($actid, $filter_email=false) { // Parameter Ke-2 Untuk Email
 		$db = \Config\Database::connect();
@@ -2228,4 +2233,4 @@ class Activities extends Controller {
 
 		return view('activities_getsitecontacts', $data);
 	}
-}
\ No newline at end of file
+}
diff --git a/app/Views/activities_detail.php b/app/Views/activities_detail.php
index bb2ac0d..5e67e9b 100644
--- a/app/Views/activities_detail.php
+++ b/app/Views/activities_detail.php
@@ -6,10 +6,31 @@ $attachment = $attachment['attachment'];
 $filelist = $attachment;
 $file_array = explode (',', $filelist);
 
+function resolve_attachment_relative_path($filename) {
+	$uploadRoot = FCPATH . 'upload' . DIRECTORY_SEPARATOR;
+	$pattern = $uploadRoot . '*' . DIRECTORY_SEPARATOR . '*' . DIRECTORY_SEPARATOR . $filename;
+	$matches = @glob($pattern);
+	if ($matches !== false) {
+		foreach ($matches as $match) {
+			if (is_file($match)) {
+				$relative = str_replace('\\', '/', substr($match, strlen($uploadRoot)));
+				return 'upload/' . $relative;
+			}
+		}
+	}
+	return 'upload/' . $filename;
+}
+
 $i = 1;
-foreach ($file_array as $value){ 
+foreach ($file_array as $value){
 	if($i == 1) {echo "<b>Attachment : </b><br/>";}
-	echo "<a href='".base_url()."upload/$value' target='_blank'>$value </a><br/>"; 
+	$trimmedValue = trim($value);
+	if ($trimmedValue === '') {
+		$i++;
+		continue;
+	}
+	$relativePath = resolve_attachment_relative_path($trimmedValue);
+	echo "<a href='".base_url($relativePath)."' target='_blank'>$trimmedValue </a><br/>";
 	$i++;
 }
 echo "<br/>";
diff --git a/app/Views/activities_editor.php b/app/Views/activities_editor.php
index d127c4a..7c257f4 100644
--- a/app/Views/activities_editor.php
+++ b/app/Views/activities_editor.php
@@ -1178,6 +1178,9 @@ toggleCalibrateAccordion();
 // }
 </script>
 
-<script src="<?=base_url();?>/assets/uppy/uppy-full.js"></script>	
+<script>
+window.crmActivitiesUploadEndpoint = <?= json_encode(base_url('activities/upload')) ?>;
+</script>
+<script type="module" src="<?=base_url();?>/assets/uppy/uppy-old.js"></script>	
 <?= $this->endSection() ?>
 
diff --git a/public/assets/uppy/uppy-old.js b/public/assets/uppy/uppy-old.js
index 28ee471..2105044 100644
--- a/public/assets/uppy/uppy-old.js
+++ b/public/assets/uppy/uppy-old.js
@@ -1,5 +1,7 @@
 import { Uppy, Dashboard, XHRUpload } from "https://releases.transloadit.com/uppy/v3.15.0/uppy.min.mjs";
 
+const uploadEndpoint = window.crmActivitiesUploadEndpoint ?? "/activities/upload";
+
 // var uppy = new Uppy({
 // onBeforeFileAdded: (currentFile, files) => {
 	
@@ -22,14 +24,17 @@ import { Uppy, Dashboard, XHRUpload } from "https://releases.transloadit.com/upp
 var uppy = new Uppy({
 onBeforeFileAdded: (currentFile, files) => {
 
-	const month = (new Date().getMonth() + 1).toString().padStart(2, '0');
-	const day = (new Date().getDate()).toString().padStart(2, '0');
+	const now = new Date();
+	const hours = now.getHours().toString().padStart(2, '0');
+	const minutes = now.getMinutes().toString().padStart(2, '0');
+	const seconds = now.getSeconds().toString().padStart(2, '0');
+	const milliseconds = now.getMilliseconds().toString().padStart(3, '0');
 
 	// Menghilangkan koma (,) dalam nama file
 	const sanitizedFileName = currentFile.name.replace(/,/g, '');
 
-	// 				TAHUN-BULAN-HARI_TIMESTAMP - NAMA_FILE
-	const name = `${new Date().getFullYear()}-${month}-${day}_${Date.now()} - ${sanitizedFileName}`;
+	// Format: HHMMSSmmm_FILENAME
+	const name = `${hours}${minutes}${seconds}${milliseconds}_${sanitizedFileName}`;
 
 	// Membuat objek file yang dimodifikasi
 	const modifiedFile = {
@@ -52,7 +57,7 @@ onBeforeFileAdded: (currentFile, files) => {
 	height: 300,
 })
 
-.use(XHRUpload, { endpoint: "/activities/upload", method: 'post' });
+.use(XHRUpload, { endpoint: uploadEndpoint, method: 'post' });
 
 uppy.on("complete", (result) => {
 	let array = result.successful;