diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..2b44dec
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,12 @@
+En desarrollo:
+* Cuenta y identidad 
+
+Modulos por desarrollar:
+* OSCAR
+* ET Media
+* Hyper
+* Comunicaciones
+* Malla Meshtastic
+* Aularios2
+* Nube Axia4.NET
+* Nube Kasa
\ No newline at end of file
diff --git a/public_html/_incl/post-body.php b/public_html/_incl/post-body.php
index fea56b5..1787133 100755
--- a/public_html/_incl/post-body.php
+++ b/public_html/_incl/post-body.php
@@ -1,16 +1,18 @@
     </main>
-  <script>
-    document.addEventListener("DOMContentLoaded", function() {
-      [].forEach.call(document.querySelectorAll('.dropimage'), function(img){
-        img.onchange = function(e){
-          var inputfile = this, reader = new FileReader();
-          reader.onloadend = function(){
-            inputfile.style['background-image'] = 'url('+reader.result+')';
+    <script>
+      document.addEventListener("DOMContentLoaded", function() {
+        console.log("post-body loaded");
+        [].forEach.call(document.querySelectorAll('.dropimage'), function(img){
+          console.log("Setting up dropimage", img);
+          img.onchange = function(e){
+            var inputfile = this, reader = new FileReader();
+            reader.onloadend = function(){
+              inputfile.style['background-image'] = 'url('+reader.result+')';
+            }
+            reader.readAsDataURL(e.target.files[0]);
           }
-          reader.readAsDataURL(e.target.files[0]);
-        }
+        });
       });
-    });
-  </script>
+    </script>
   </body>
 </html>
\ No newline at end of file
diff --git a/public_html/entreaulas/_filefetch.php b/public_html/entreaulas/_filefetch.php
index f71dfeb..6ea59bc 100755
--- a/public_html/entreaulas/_filefetch.php
+++ b/public_html/entreaulas/_filefetch.php
@@ -28,7 +28,7 @@ if (file_exists($path . ".thumbnail") && $_GET["thumbnail"] == "1") {
 }
 header("Content-Type: " . $mime);
 header('Content-Length: ' . filesize($path));
-header('Cache-Control: max-age=7200');
+//header('Cache-Control: max-age=7200');
 header("X-Accel-Redirect: $uripath");
 
 // // stream the file
diff --git a/public_html/index.php b/public_html/index.php
index b2647cd..b225276 100755
--- a/public_html/index.php
+++ b/public_html/index.php
@@ -15,32 +15,62 @@
         <span>Gestión de aularios conectados.</span>
         <a href="/entreaulas/" class="button">Tengo cuenta</a>
     </div>
-    <!--<div class="card grid-item">
+    <div class="card grid-item" style="opacity: 0.5;">
         <img src="/static/logo-oscar.png" alt="Logo OSCAR">
         <b>OSCAR</b>
         <span>Red de IA Absoluta.</span>
-        <a href="/oscar/" disabled class="button">No disponible</a>
-    </div>-->
-    <div class="card grid-item">
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-media.png" alt="Logo ET Media">
+        <b>ET Media</b>
+        <span>Streaming de pelis y series.</span>
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-hyper.png" alt="Logo Hyper">
+        <b>Hyper</b>
+        <span>Plataforma de gestión empresarial.</span>
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-mail.png" alt="Logo Comunicaciones">
+        <b>Comunicaciones</b>
+        <span>Correos electrónicos y mensajería.</span>
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-account.png" alt="Logo Account">
+        <b>Cuenta y identidad</b>
+        <span>Acceso a la plataforma y pagos.</span>
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-malla.png" alt="Logo Malla">
+        <b>Malla Meshtastic</b>
+        <span>Red de comunicación por radio.</span>
+    </div>
+    <div class="card grid-item" style="opacity: 0.5;">
         <img src="/static/logo-aularios.png" alt="Logo Aularios">
         <b>Aularios<sup>2</sup></b>
-        <span>Acceso centralizado a los Aularios.</span>
-        <a href="https://aularios.tech.eus" class="button">Tengo cuenta</a>
-        <small>Externo</small>
+        <span>Visita virtual a los aularios.</span>
+        <!--<a href="https://aularios.tech.eus" class="button">Tengo cuenta</a>-->
+        <small>Solo lectura - Migrando a Axia4</small>
     </div>
-    <div class="card grid-item">
-        <img src="/static/logo.png" alt="Logo Axia4 Cloud">
-        <b>Nube Axia4</b>
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-nube.png" alt="Logo Axia4 Cloud">
+        <b>Nube Axia4.NET</b>
         <span>Almacenamiento central de datos.</span>
-        <a href="https://axia4.net" class="button">Tengo cuenta</a>
-        <small>Externo</small>
+        <!--<a href="https://axia4.net" class="button">Tengo cuenta</a>-->
+        <small>Cerrado por migración a Axia4</small>
     </div>
-    <div class="card grid-item">
-        <img src="/static/logo-nk4.svg" alt="Logo NK5">
+    <div class="card grid-item" style="opacity: 0.5;">
+        <img src="/static/logo-nk4.png" alt="Logo Nube Kasa">
         <b>Nube Kasa</b>
         <span>Nube personal con domotica.</span>
-        <a href="https://nk4.tech.eus/_familia/" class="button">Acceso privado</a>
-        <small>Externo</small>
+        <!--<a href="https://nk4.tech.eus/_familia/" class="button">Acceso privado</a>-->
+        <small>Cerrado por mantenimiento</small>
+    </div>
+    <div class="card grid-item">
+        <img src="/static/logo-sysadmin.png" alt="Logo SysAdmin">
+        <b>SysAdmin</b>
+        <span>Panel de administración de sistemas.</span>
+        <a href="/sysadmin/" class="button">Acceso privado</a>
     </div>
 </div>
 
@@ -48,7 +78,7 @@
     .grid-item {
         margin-bottom: 10px !important;
         padding: 15px;
-        width: 250px;
+        width: 235px;
         text-align: center;
     }
 
@@ -61,7 +91,7 @@
 
 <script>
     var msnry = new Masonry('#grid', {
-        "columnWidth": 250,
+        "columnWidth": 235,
         "itemSelector": ".grid-item",
         "gutter": 10,
         "transitionDuration": 0
diff --git a/public_html/static/logo-account.png b/public_html/static/logo-account.png
new file mode 100644
index 0000000..2a314be
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diff --git a/public_html/static/logo-alortu.png b/public_html/static/logo-alortu.png
deleted file mode 100755
index 102f424..0000000
Binary files a/public_html/static/logo-alortu.png and /dev/null differ
diff --git a/public_html/static/logo-entreaulas.old.png b/public_html/static/logo-entreaulas.old.png
new file mode 100755
index 0000000..7a706d9
Binary files /dev/null and b/public_html/static/logo-entreaulas.old.png differ
diff --git a/public_html/static/logo-entreaulas.png b/public_html/static/logo-entreaulas.png
old mode 100755
new mode 100644
index 7a706d9..a1c22f7
Binary files a/public_html/static/logo-entreaulas.png and b/public_html/static/logo-entreaulas.png differ
diff --git a/public_html/static/logo-mail.png b/public_html/static/logo-mail.png
new file mode 100644
index 0000000..4735cc9
Binary files /dev/null and b/public_html/static/logo-mail.png differ
diff --git a/public_html/static/logo-malla.png b/public_html/static/logo-malla.png
new file mode 100644
index 0000000..0b88592
Binary files /dev/null and b/public_html/static/logo-malla.png differ
diff --git a/public_html/static/logo-media.png b/public_html/static/logo-media.png
old mode 100755
new mode 100644
index 43e516e..cf80538
Binary files a/public_html/static/logo-media.png and b/public_html/static/logo-media.png differ
diff --git a/public_html/static/logo-newold.png b/public_html/static/logo-newold.png
deleted file mode 100755
index 5f41063..0000000
Binary files a/public_html/static/logo-newold.png and /dev/null differ
diff --git a/public_html/static/logo-nk4.svg b/public_html/static/logo-nk4.old.svg
similarity index 100%
rename from public_html/static/logo-nk4.svg
rename to public_html/static/logo-nk4.old.svg
diff --git a/public_html/static/logo-nk4.png b/public_html/static/logo-nk4.png
new file mode 100644
index 0000000..5bdbe64
Binary files /dev/null and b/public_html/static/logo-nk4.png differ
diff --git a/public_html/static/logo-nk5.png b/public_html/static/logo-nk5.png
deleted file mode 100755
index 912109d..0000000
Binary files a/public_html/static/logo-nk5.png and /dev/null differ
diff --git a/public_html/static/logo-nube.png b/public_html/static/logo-nube.png
new file mode 100644
index 0000000..f49055f
Binary files /dev/null and b/public_html/static/logo-nube.png differ
diff --git a/public_html/static/logo-old.png b/public_html/static/logo-old.png
index ca048ad..5f41063 100755
Binary files a/public_html/static/logo-old.png and b/public_html/static/logo-old.png differ
diff --git a/public_html/static/logo-oscar.png b/public_html/static/logo-oscar.png
index 31529d5..c5ad17e 100644
Binary files a/public_html/static/logo-oscar.png and b/public_html/static/logo-oscar.png differ
diff --git a/public_html/static/logo-sysadmin.png b/public_html/static/logo-sysadmin.png
new file mode 100644
index 0000000..e2e1da4
Binary files /dev/null and b/public_html/static/logo-sysadmin.png differ
diff --git a/public_html/sysadmin/_incl/post-body.php b/public_html/sysadmin/_incl/post-body.php
index 8a24942..fb99f42 100755
--- a/public_html/sysadmin/_incl/post-body.php
+++ b/public_html/sysadmin/_incl/post-body.php
@@ -1 +1 @@
-<?php require_once "../../_incl/post-body.php"; ?>
\ No newline at end of file
+<?php require __DIR__ . "/../../_incl/post-body.php"; ?>
\ No newline at end of file
diff --git a/public_html/sysadmin/_incl/pre-body.php b/public_html/sysadmin/_incl/pre-body.php
index 5806d8e..56c3377 100755
--- a/public_html/sysadmin/_incl/pre-body.php
+++ b/public_html/sysadmin/_incl/pre-body.php
@@ -1,5 +1,5 @@
 <?php 
   $APP_CODE = "sysadmin";
-  $APP_NAME = "Administración del Sistema";
+  $APP_NAME = "SysAdmin";
   $APP_TITLE = "Administración del Sistema";
   require_once __DIR__ . "/../../_incl/pre-body.php";
diff --git a/public_html/sysadmin/centros.php b/public_html/sysadmin/centros.php
index 9a20b1e..5706511 100644
--- a/public_html/sysadmin/centros.php
+++ b/public_html/sysadmin/centros.php
@@ -42,6 +42,33 @@ switch ($_GET["form"]) {
         header("Location: ?action=edit&centro=" . urlencode($centro_id));
         exit();
         break;
+    case "edit_activity":
+        ini_set('memory_limit', '512M');
+        ini_set("display_errors", 1);
+        ini_set('upload_max_filesize', '256M');
+        ini_set('post_max_size', '256M');
+        $centro_id = $_GET['centro'] ?? '';
+        $activity_name = $_GET['activity'] ?? '';
+        $activity_path = "/DATA/entreaulas/Centros/$centro_id/Panel/Actividades/$activity_name";
+        if (!is_dir($activity_path)) {
+            die("Actividad no válida.");
+        }
+        $activity_photo = $_FILES["file"] ?? null;
+        if ($activity_photo !== null && $activity_photo["error"] === UPLOAD_ERR_OK) {
+            $photo_path = "$activity_path/photo.jpg";
+            move_uploaded_file($activity_photo["tmp_name"], $photo_path);
+        }
+        if ($_POST['nombre'] != $_GET['activity']) {
+            $new_activity_name = $_POST['nombre'];
+            $new_activity_path = "/DATA/entreaulas/Centros/$centro_id/Panel/Actividades/$new_activity_name";
+            if (is_dir($new_activity_path)) {
+                die("Ya existe una actividad con ese nombre.");
+            }
+            rename($activity_path, $new_activity_path);
+        }
+        header("Location: ?action=edit&centro=" . urlencode($centro_id));;
+        exit();
+        break;
 }
 
 require_once "_incl/pre-body.php"; 
@@ -60,13 +87,18 @@ switch ($_GET["action"]) {
         Desde esta sección puedes administrar la actividad seleccionada del panel del centro <?php echo htmlspecialchars($centro_id); ?>.
     </span>
     <form method="post" action="?form=edit_activity&centro=<?php echo urlencode($centro_id); ?>&activity=<?php echo urlencode($activity_name); ?>" enctype="multipart/form-data">
+        <label>
+            Nombre de la actividad:<br>
+            <input required type="text" name="nombre" value="<?php echo htmlspecialchars($activity_name); ?>">
+        </label><br><br>
+        Foto (pulsa para cambiarla):<br>
         <div style="width: 200px;">
             <label class="dropimage" style="background-image: url('<?php
                 $image_path = "$activity_path/photo.jpg";
                 $image_fetchpath = file_exists($image_path) ? "/entreaulas/_filefetch.php?type=panel_actividades&centro=" . urlencode($centro_id) . "&activity=" . urlencode($activity_name) : '/static/logo-entreaulas.png';
                 echo htmlspecialchars($image_fetchpath);
             ?>');">
-                <input title="Drop image or click me" type="file">
+                <input title="Drop image or click me" type="file" name="file" accept="image/*">
             </label>
         </div>
         <button type="submit">Guardar Cambios</button>
@@ -225,6 +257,4 @@ switch ($_GET["action"]) {
         break;
 }
 
-
-
 require_once "_incl/post-body.php"; ?>
\ No newline at end of file
diff --git a/public_html/sysadmin/index.php b/public_html/sysadmin/index.php
index dc93013..e0b0ce0 100644
--- a/public_html/sysadmin/index.php
+++ b/public_html/sysadmin/index.php
@@ -24,6 +24,12 @@ require_once "_incl/pre-body.php"; ?>
         <span>Administra los usuarios del sistema.</span>
         <a href="/sysadmin/users.php" class="button">Gestionar Usuarios</a>
     </div>
+    <div class="card grid-item">
+        <img src="/static/logo-club.png" alt="Logo Club">
+        <b>Generar miniaturas</b>
+        <span>Genera miniaturas para las imágenes del club.</span>
+        <a href="/sysadmin/club_mkthumb.php" class="button">Generar Miniaturas</a>
+    </div>
 </div>
 <style>
     .grid-item {