Add Nostr ecash transaction history CLI

- CLI tool to export NIP-60 (Cashu Wallet) and NIP-61 (Nutzap) transaction history as CSV
- Fetches and decrypts kind:17375 wallet, kind:7375 token, kind:7376 history, kind:9321 nutzap, and kind:7377 redemption events
- Accepts NOSTR_SECRET_KEY env var and optional --mints flag
- Outputs CSV to stdout with columns: date,type,amount,unit,mint,token_id,memo
- Progress and errors go to stderr

package.json

@@ -0,0 +1,16 @@
+{
+  "name": "nostr-nut-history",
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "start": "bun run src/index.ts",
+    "type-check": "bunx tsc --noEmit"
+  },
+  "dependencies": {
+    "@nostr-dev-kit/ndk": "latest"
+  },
+  "devDependencies": {
+    "@types/bun": "latest",
+    "typescript": "latest"
+  }
+}