Update project icons and fix icon picker selection

Replace several icon names with available alternatives and fix icon selection by handling button clicks directly instead of flowbox activation.

src/constants.py

@@ -30,7 +30,7 @@ PROJECT_ICONS = [
     # Row 2: Development & Code
     "application-x-executable-symbolic",
     "text-x-generic-symbolic",
-    "code-symbolic",
+    "text-x-script-symbolic",
     "utilities-terminal-symbolic",
     "package-x-generic-symbolic",
     "software-update-available-symbolic",
@@ -38,14 +38,14 @@ PROJECT_ICONS = [
     # Row 3: Network & Web
     "network-server-symbolic",
     "network-wireless-symbolic",
-    "weather-clear-symbolic",
-    "globe-symbolic",
-    "world-symbolic",
+    "network-workgroup-symbolic",
+    "network-vpn-symbolic",
+    "preferences-desktop-locale-symbolic",
     "web-browser-symbolic",
 
     # Row 4: Tools & Actions
     "document-edit-symbolic",
-    "preferences-system-symbolic",
+    "document-new-symbolic",
     "system-search-symbolic",
     "view-list-symbolic",
     "emblem-system-symbolic",
@@ -56,7 +56,7 @@ PROJECT_ICONS = [
     "non-starred-symbolic",
     "bookmark-new-symbolic",
     "user-bookmarks-symbolic",
-    "tag-symbolic",
+    "document-open-recent-symbolic",
     "mail-send-symbolic",
 
     # Row 6: Status & Symbols

src/icon_picker_dialog.py

@@ -59,12 +59,18 @@ class IconPickerDialog(Adw.Dialog):
             if icon_name == self.current_icon:
                 button.add_css_class("suggested-action")
 
+            # Connect button click directly
+            button.connect('clicked', self.on_icon_button_clicked)
+
             self.icon_flowbox.append(button)
 
-    @Gtk.Template.Callback()
-    def on_icon_selected(self, flowbox, child):
-        """Handle icon selection."""
-        button = child.get_child()
+    def on_icon_button_clicked(self, button):
+        """Handle icon button click."""
         if hasattr(button, 'icon_name'):
             self.emit('icon-selected', button.icon_name)
             self.close()
+
+    @Gtk.Template.Callback()
+    def on_icon_selected(self, flowbox, child):
+        """Handle icon selection (unused - kept for compatibility)."""
+        pass