fix: resolve PostgreSQL type mismatches and add willexecutor debug logging

- Fix get_next_address_index: use try_get::<i32> for PG SERIAL/INTEGER columns
- Fix search_tx: use try_get::<i32> for PG status column
- Fix execute_insert: parse locktime (String→i64) and in_vout (String→i32)
  before binding to PG INTEGER columns
- Fix execute_insert: bind tbl_out vout as i32, amount as String for PG
- Fix save_new_address: cast xpub i64 to i32 for PG INTEGER column
- Fix get_pending_txs: cast i64 bind params to i32, use try_get::<i32> for reads
- Fix get_stats: use try_get::<i32> for all numeric PG INTEGER columns
- Add trace logging in parse_request_transactions for xpub address matching
- Add trace logging in get_all_addresses_by_xpub for query debugging

generate_random_ascii.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+len=$1
+if [ -z $len ]; then
+  len=32; 
+fi
+# Genera 256 caratteri ASCII stampabili (32-126)
+random_ascii_256=$(LC_ALL=C tr -dc 'A-Za-z0-9' < /dev/urandom | head -c $len)
+
+echo "Stringa ASCII random (256 caratteri):"
+echo "$random_ascii_256"
+echo
+echo "Lunghezza: ${#random_ascii_256} caratteri"