feat: implement email logging and test price mode functionality with QR code generation for order confirmations

.vscode/ftp-kr.sync.cache.json

@@ -60,8 +60,8 @@
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@@ -122,8 +122,8 @@
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             "class.Users.php": {
@@ -920,6 +920,12 @@
             }
           },
           "admin-panel": {
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+              "modified": false
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             "login.php": {
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@@ -961,12 +967,6 @@
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