fix(security): address audit findings — meili key, vite CVEs, SQL injection

- S-1: Replace hardcoded "devkey123" Meilisearch master key with
  auto-generated key persisted to ~/.4dpocket/meili_master_key
- S-2: Bump vite from ^8.0.1 to ^8.0.5 (resolved to 8.0.8) fixing
  2 HIGH CVEs (file read + fs.deny bypass)
- S-3: Fix SQL injection in db reset PostgreSQL path — use psql --set
  parameter binding instead of f-string interpolation

Author: prakersh

frontend/package.json

@@ -46,6 +46,6 @@
     "tailwindcss": "^4.2.2",
     "typescript": "~5.9.3",
     "typescript-eslint": "^8.57.0",
-    "vite": "^8.0.1"
+    "vite": "^8.0.5"
   }
 }