chore: establish TechLog migration baseline

package.json

@@ -123,11 +123,17 @@
     "check:types:service-worker": "tsc --project tsconfig.service-worker.json"
   },
   "dependencies": {
+    "@fontsource/ibm-plex-mono": "5.3.0",
     "@tanstack/react-query": "5.101.4",
     "lucide-react": "1.25.0",
+    "pretendard": "1.3.9",
     "react": "19.2.8",
     "react-dom": "19.2.8",
     "react-router-dom": "7.18.1",
+    "remark-directive": "4.0.0",
+    "remark-gfm": "4.0.1",
+    "remark-parse": "11.0.0",
+    "unified": "11.0.5",
     "zod": "4.4.3"
   },
   "devDependencies": {