Script repository dialog doesn't open from script settings

[pbek]

Bug Report

Description:
Opening the script repository dialog from the script settings page (via the "Add script" button drop-down → "Search script repository") does not work. It only works when triggered from the main menu (Scripting → Script repository).

Root Cause:
In scriptingsettingswidget.cpp, the action was connected using the old-style SIGNAL/SLOT macro syntax:

connect(searchScriptAction, SIGNAL(triggered()), this, SLOT(searchScriptInRepository()));

However, searchScriptInRepository() is declared in the public: section of the class, not in public slots:. The old-style SIGNAL/SLOT macro requires the receiver to be declared in a slots: section, so the connection silently fails at runtime.

Fix:
Replace with a new-style lambda connection that does not require a slot declaration:

connect(searchScriptAction, &QAction::triggered, this,
        [this]() { searchScriptInRepository(); });

Steps to Reproduce:

1. Open Settings → Scripting
2. Click the "Add script..." button drop-down arrow
3. Select "Search script repository"
4. Nothing happens

Expected:
The script repository dialog should open.