feat: 브랜드 파비콘(SVG) 추가 — 네이비 배경·쓰레기통·에코 잎

- public/favicon.svg 신규, 관리자/인증/포털 head에 링크(기존 .ico 폴백 유지)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/Views/auth/_shell.php

@@ -15,6 +15,9 @@ $subtitle = $subtitle ?? '종량제 쓰레기봉투 물류시스템';
 <meta charset="utf-8"/>
 <meta content="width=device-width, initial-scale=1.0" name="viewport"/>
 <title><?= esc($pageTitle ?? 'GBLS') ?></title>
+<link rel="icon" type="image/svg+xml" href="<?= base_url('favicon.svg') ?>"/>
+<link rel="alternate icon" href="<?= base_url('favicon.ico') ?>"/>
+<link rel="apple-touch-icon" href="<?= base_url('favicon.svg') ?>"/>
 <script src="https://cdn.tailwindcss.com?plugins=forms,container-queries"></script>
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css"/>
 <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet"/>

app/Views/home/_dashboard_gov_portal_head.php

@@ -1,3 +1,6 @@
   <meta charset="utf-8"/>
   <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
   <title>GBLS</title>
+  <link rel="icon" type="image/svg+xml" href="<?= base_url('favicon.svg') ?>"/>
+  <link rel="alternate icon" href="<?= base_url('favicon.ico') ?>"/>
+  <link rel="apple-touch-icon" href="<?= base_url('favicon.svg') ?>"/>

public/favicon.svg

@@ -0,0 +1,20 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" width="64" height="64" role="img" aria-label="GBLS">
+  <!-- 브랜드 배경(네이비) -->
+  <rect x="0" y="0" width="64" height="64" rx="14" fill="#243a5e"/>
+  <!-- 쓰레기통(흰색) : 종량제 쓰레기봉투 물류 -->
+  <g fill="none" stroke="#ffffff" stroke-width="3.4" stroke-linecap="round" stroke-linejoin="round">
+    <!-- 뚜껑 -->
+    <path d="M16 22 H48"/>
+    <!-- 손잡이 -->
+    <path d="M27 22 V18.5 a2 2 0 0 1 2-2 h6 a2 2 0 0 1 2 2 V22"/>
+    <!-- 통 몸체 -->
+    <path d="M19 22 L21.5 47 a3 3 0 0 0 3 2.8 h15 a3 3 0 0 0 3-2.8 L45 22 Z"/>
+  </g>
+  <!-- 세로 줄무늬 -->
+  <g stroke="#ffffff" stroke-width="2.6" stroke-linecap="round" opacity="0.9">
+    <path d="M27 28 V44"/>
+    <path d="M37 28 V44"/>
+  </g>
+  <!-- 에코 잎사귀(그린 포인트) -->
+  <path d="M32 27 C33 22 37 20 41 20 C41 25 38 28 32 27 Z" fill="#34d399"/>
+</svg>