Instead of defaulting to 100 stroops, fetch current network fee statistics from Horizon and suggest an appropriate fee.
Acceptance criteria:
[ ] Call GET /fee_stats from Horizon on the configure step
[ ] Show "Recommended: X stroops (p50)" and "Fast: Y stroops (p95)"
[ ] Allow user to pick or override
[ ] Cache fee stats for 30 seconds to avoid unnecessary requests
Instead of defaulting to 100 stroops, fetch current network fee statistics from Horizon and suggest an appropriate fee.
Acceptance criteria:
[ ] Call GET /fee_stats from Horizon on the configure step
[ ] Show "Recommended: X stroops (p50)" and "Fast: Y stroops (p95)"
[ ] Allow user to pick or override
[ ] Cache fee stats for 30 seconds to avoid unnecessary requests