Initial Hash Wallet price aggregator (Cloudflare Worker)

Single endpoint serving USD spot prices for Hash Wallet, sourcing from
Kraken (majors) and NonKYC (Wownero), KV-cached and refreshed via cron
every minute. Drop-in /v2/rates shape compatible with the existing wallet
client; preferred /v1/prices returns everything in one call.

tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "es2022",
+    "module": "es2022",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "lib": ["es2022"],
+    "types": ["@cloudflare/workers-types"]
+  },
+  "include": ["src/**/*.ts"]
+}