feat(portfolio): filter by service category (Consult / Web Dev) + multi-category support

Changes:
- Filter bar: old industry filters (🚗, 💊, etc.) replaced with service categories: All, Consult, Website Development
- Card categories updated per user spec:
  - Dataroot → consult only
  - เลือดจระเข้วานิไทย → both consult + webdev (multi-category)
  - All other 7 cards → webdev
- Filter JS updated: reads data-category (comma-sep) instead of industry text
- Multi-category via comma-separated values in data-category attribute
- Portfolio page: home + portfolio page both reflect new categories

public/favicon.svg

@@ -1,9 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 128 128">
-    <path d="M50.4 78.5a75.1 75.1 0 0 0-28.5 6.9l24.2-65.7c.7-2 1.9-3.2 3.4-3.2h29c1.5 0 2.7 1.2 3.4 3.2l24.2 65.7s-11.6-7-28.5-7L67 45.5c-.4-1.7-1.6-2.8-2.9-2.8-1.3 0-2.5 1.1-2.9 2.7L50.4 78.5Zm-1.1 28.2Zm-4.2-20.2c-2 6.6-.6 15.8 4.2 20.2a17.5 17.5 0 0 1 .2-.7 5.5 5.5 0 0 1 5.7-4.5c2.8.1 4.3 1.5 4.7 4.7.2 1.1.2 2.3.2 3.5v.4c0 2.7.7 5.2 2.2 7.4a13 13 0 0 0 5.7 4.9v-.3l-.2-.3c-1.8-5.6-.5-9.5 4.4-12.8l1.5-1a73 73 0 0 0 3.2-2.2 16 16 0 0 0 6.8-11.4c.3-2 .1-4-.6-6l-.8.6-1.6 1a37 37 0 0 1-22.4 2.7c-5-.7-9.7-2-13.2-6.2Z" />
-    <style>
-        path { fill: #000; }
-        @media (prefers-color-scheme: dark) {
-            path { fill: #FFF; }
-        }
-    </style>
-</svg>

public/site.webmanifest

@@ -0,0 +1,22 @@
+{
+  "name": "MoreminiMore",
+  "short_name": "MoreminiMore",
+  "description": "ที่ปรึกษาที่วางกลยุทธ์จากข้อมูล ไม่ใช่จากประสบการณ์ล้วน ๆ — รับทำเว็บ ที่ปรึกษาการตลาด และวางระบบ AI ในองค์กร",
+  "icons": [
+    {
+      "src": "/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "theme_color": "#fed400",
+  "background_color": "#ffffff",
+  "display": "standalone",
+  "start_url": "/",
+  "lang": "th"
+}