fix: convert daily cost from USD to local currency (#4)

goccc returns total_cost in USD but was displayed with local currency
symbol without conversion, causing daily cost to appear lower than
session cost.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: GitButler <gitbutler@gitbutler.com>

Author: 3 people

statusline.sh

@@ -147,7 +147,8 @@ fi
 # --- Daily cost ---
 daily_cost_display=""
 if [[ "$daily_cost" != "0" && "$daily_cost" != "null" ]]; then
-  daily_cost_display="💰 $(format_cost "$daily_cost") today"
+  daily_cost_val=$(echo "$daily_cost $currency_rate" | awk '{printf "%.2f", $1 * $2}')
+  daily_cost_display="💰 $(format_cost "$daily_cost_val") today"
 fi
 
 # --- Rate limit bar ---