The chronicle remembers everything, and holds still while you read it

The game log's sixty-line window was a render cap, not a limit of what
the client holds — a rejoin replays the whole game into memory. The
chronicle now renders every line back to the deal, and its auto-scroll
grows manners: it follows the newest line only while the reader sits at
the bottom, and holds its place once they scroll up into history.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/web/src/App.svelte

@@ -1192,10 +1192,18 @@
   );
 
   let chronicleEl = $state<HTMLElement | null>(null);
+  /** The chronicle follows the newest line only while the reader is at
+   * the bottom; scrolled back into history, it holds still. */
+  let chronicleStick = true;
+  function onChronicleScroll() {
+    if (!chronicleEl) return;
+    chronicleStick =
+      chronicleEl.scrollHeight - chronicleEl.scrollTop - chronicleEl.clientHeight < 60;
+  }
   $effect(() => {
     void net.log.length;
     void local.log.length;
-    if (chronicleEl) chronicleEl.scrollTop = chronicleEl.scrollHeight;
+    if (chronicleEl && chronicleStick) chronicleEl.scrollTop = chronicleEl.scrollHeight;
   });
 
   // Tab title + favicon carry the turn signal even from another tab.
@@ -2044,13 +2052,14 @@
           </div>
         </div>
 
-        <div class="chronicle" aria-label="game log" bind:this={chronicleEl}>
+        <div class="chronicle" aria-label="game log" bind:this={chronicleEl}
+          onscroll={onChronicleScroll}>
           {#if local.active}
-            {#each local.log.slice(-60) as line, i (i)}
+            {#each local.log as line, i (i)}
               <div class:table-talk={line.startsWith("\u{1F4AC}")}>{line}</div>
             {/each}
           {:else}
-            {#each net.log.slice(-60) as line, i (i)}
+            {#each net.log as line, i (i)}
               <div class:table-talk={line.text.startsWith("\u{1F4AC}")}>
                 {line.text}
                 {#if line.notable && line.turn !== null && prefs.instantReplay && !net.spectating}