Max reaches every Lightning amount form: amountless bolt11s, ark zaps, and lightning-address zaps all fill spendable-minus-estimated-fees (sum over the 24-input cap, schedule fee plus the routing reserve, real quote confirms at pay time) — emptying Spending over Lightning stops being arithmetic homework

Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01MrkLsNScXe9b6BviUSdmMr

1 files changed, 7 insertions, 0 deletions

diff --git a/src/features/zaps.js b/src/features/zaps.js
index 0938d3d..29f2aa8 100644
--- a/src/features/zaps.js
+++ b/src/features/zaps.js
@@ -264,6 +264,13 @@ export function zapsFeature(ctx) {
           h('input', { type: 'number', min: '0', inputmode: 'decimal', placeholder: t('lnPayAmount'), value: z.amount,
             disabled: !!p.fixedSat,
             onInput: (e) => { z.amount = e.target.value; render(); } }),
+          !p.fixedSat && (hook('lnMaxSendSat') || 0) > 0
+            ? h('button', { type: 'button', onClick: () => {
+                const sat = hook('lnMaxSendSat');
+                z.amount = getUnit() === 'sats' ? String(sat) : (sat / 1e8).toFixed(8);
+                render();
+              } }, t('max'))
+            : null,
           h('div', { style: 'display:flex;align-items:center' }, unitTag())),
         broke
           ? h('div', { class: 'notice info' }, t('zapNoBalance'))