use COMMIT_HASH_PLACEHOLDER for server-side hash injection, remove version.json and local hooks

index.html

@@ -335,7 +335,7 @@ footer a{color:var(--accent);text-decoration:none}
     <div class="wrap">
       <span>Bitcoin After Life — Will Executor List</span>
       <a href="mailto:welist@bitcoin-after.life">welist@bitcoin-after.life</a>
-      <a class="mono" id="commit-link" href="#">—</a>
+      <a class="mono" id="commit-link" href="https://bitcoin-after.life/gitea/bitcoinafterlife/bal-welist-website/commit/COMMIT_HASH_PLACEHOLDER">COMMIT_HASH_PLACEHOLDER</a>
     </div>
   </footer>
 
@@ -497,13 +497,6 @@ document.getElementById('submit').addEventListener('click', async () => {
 (function init() {
   const blob = new Blob([JSON.stringify(allServers, null, 2)], { type: 'application/json' });
   document.getElementById('download').href = URL.createObjectURL(blob);
-  fetch('/version.json')
-    .then(r => r.json())
-    .then(v => {
-      document.getElementById('commit-link').href = 'https://bitcoin-after.life/gitea/bitcoinafterlife/bal-welist-website/commit/' + v.commit;
-      document.getElementById('commit-link').textContent = v.commit;
-    })
-    .catch(() => {});
   fetchData();
 })();
 </script>