Preserve counters across mint loop in anvil_mint_tokens.sh

Piping jq into while ran the loop in a subshell, so increments to
SUCCESS_COUNT, SKIP_COUNT, and FAIL_COUNT were discarded when the
subshell exited. The final summary always printed 0 for all three.

Drive the loop with process substitution instead so the counters
live in the parent shell and the summary reflects actual results.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: lfportal

scripts/anvil_mint_tokens.sh

@@ -108,7 +108,7 @@ SUCCESS_COUNT=0
 SKIP_COUNT=0
 FAIL_COUNT=0
 
-jq -c '.[]' "$TOKENS_FILE" | while read -r token; do
+while read -r token; do
     TOKEN_INT=$(echo "$token" | jq -r '.token_int')
     AMOUNT=$(echo "$token" | jq -r '.unquantised_sum')
     TICKER=$(echo "$token" | jq -r '.ticker_symbol')
@@ -167,7 +167,7 @@ jq -c '.[]' "$TOKENS_FILE" | while read -r token; do
             fi
         fi
     fi
-done
+done < <(jq -c '.[]' "$TOKENS_FILE")
 
 # Stop impersonation if we started it
 if [ -z "$PRIVATE_KEY" ]; then