feat[frontend]: build Discover-style Log Explorer wired to backend + i18n

Author: Kbayero

.gitignore

@@ -16,3 +16,9 @@ installer/public_key.crt
 qodana.yaml
 backend/.env.example
 backend/.env
+
+# Compiled backend binary (produced by dev-backend/build.sh)
+backend/backend
+
+# Local docker dev harness (compose + build.sh + .env)
+dev-backend/

frontend/.gitignore

@@ -6,3 +6,4 @@ dist-ssr/
 *.log
 .vite/
 .DS_Store
+*.tsbuildinfo

frontend/package-lock.json

@@ -23,6 +23,7 @@
     "i18next": "^26.3.1",
     "i18next-browser-languagedetector": "^8.2.1",
     "lucide-react": "^0.468.0",
+    "mermaid": "^11.15.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-i18next": "^17.0.8",