Fase 3 feedback round 2: live color preview, bigger top icon, dashboard links

- Style preview now updates immediately when picking a color via the
  colorpicker widget. It sets the input value through jQuery's synthetic
  trigger(), which a native addEventListener('change', ...) never sees -
  bound the listener through jQuery instead so both native and
  colorpicker-driven changes refresh the preview.
- Icon-above-QR max height raised from 25% to 62.5% of QR height (~2.5x
  bigger per feedback); the existing 60%-width cap now becomes the
  practical limit for most icons. Verified generated QR still decodes.
- Dashboard's "Dynamic Qr codes" and "Static QR codes" info-boxes now link
  to their list pages. "Total qr codes"/"Total Scans" left as-is - no
  combined-list or scan-report page exists yet to link them to.
- Random-style button now has a "Randomize" label to match its row-mates
  (Load preset/Save as preset/Style preview), instead of an empty spacer.

src/dist/js/qrcode-style-tools.js

@@ -95,9 +95,18 @@
         });
 
         document.querySelectorAll('#foreground, #background').forEach(function (input) {
+            // bootstrap-colorpicker sets the value and fires 'change' via jQuery's
+            // synthetic .trigger(), which a native addEventListener never sees - so the
+            // preview only updates via jQuery's event binding, not the native one below.
+            if (window.jQuery) {
+                jQuery(input).on('change', function () {
+                    updateStylePreview(scopeOf(input));
+                });
+            } else {
                 input.addEventListener('change', function () {
                     updateStylePreview(scopeOf(input));
                 });
+            }
         });
 
         document.querySelectorAll('select[name="level"]').forEach(function (select) {

src/forms/qrcode_options.php

@@ -58,7 +58,7 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
     <div class="col-sm-12 mb-2">
         <div class="row">
             <div class="col-6 col-md-3">
-                <label>&nbsp;</label>
+                <label>Randomize</label>
                 <button type="button" id="random_style_btn" class="btn btn-outline-secondary btn-block">
                     <i class="fa fa-dice"></i> Random style
                 </button>

src/index.php

@@ -120,6 +120,7 @@ foreach ($createdQrcode_static as $row) {
                                 </div><!-- /.col -->
                                     
                                 <div class="col-12 col-sm-6 col-md-3">
+                                    <a href="dynamic_qrcodes.php" class="d-block">
                                         <div class="info-box mb-3 bg-success">
                                             <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
 
@@ -128,12 +129,14 @@ foreach ($createdQrcode_static as $row) {
                                                 <span class="info-box-number"><?php echo $numQrcode_dynamic; ?></span>
                                             </div><!-- /.info-box-content -->
                                         </div>
+                                    </a>
                                 </div><!-- /.col -->
 
                                 <!-- fix for small devices only -->
                                 <div class="clearfix hidden-md-up"></div>
 
                                 <div class="col-12 col-sm-6 col-md-3">
+                                    <a href="static_qrcodes.php" class="d-block">
                                         <div class="info-box mb-3 bg-danger">
                                             <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
 
@@ -143,6 +146,7 @@ foreach ($createdQrcode_static as $row) {
                                             </div><!-- /.info-box-content -->
 
                                         </div>
+                                    </a>
                                 </div><!-- /.col -->
                                 
                                 <div class="col-12 col-sm-6 col-md-3">

src/lib/Qrcode/Qrcode-intchil.php

@@ -174,7 +174,7 @@ class Qrcode {
         $iconWidth = imagesx($icon);
         $iconHeight = imagesy($icon);
 
-        $maxIconHeight = (int) ($height * 0.25);
+        $maxIconHeight = (int) ($height * 0.625);
         $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
         $targetWidth = max(1, (int) ($iconWidth * $scale));
         $targetHeight = max(1, (int) ($iconHeight * $scale));

src/lib/Qrcode/Qrcode.php

@@ -159,7 +159,7 @@ class Qrcode {
         $iconWidth = imagesx($icon);
         $iconHeight = imagesy($icon);
 
-        $maxIconHeight = (int) ($height * 0.25);
+        $maxIconHeight = (int) ($height * 0.625);
         $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
         $targetWidth = max(1, (int) ($iconWidth * $scale));
         $targetHeight = max(1, (int) ($iconHeight * $scale));