feat: update sync workflow and README for KV storage support

wrangler.toml

@@ -6,12 +6,10 @@ assets = { directory = "./dist", not_found_handling = "single-page-application",
 [build]
 command = "npm run build"
 
-# D1 Database for storing vault data
 [[d1_databases]]
 binding = "DB"
 database_name = "nodewarden-db"
 
-# R2 Bucket for storing attachments
 [[r2_buckets]]
 binding = "ATTACHMENTS"
 bucket_name = "nodewarden-attachments"