community: a chat thread stretches with the pane too — no inner width cap remains

src/views/Community.svelte

@@ -2093,8 +2093,8 @@
         /* The whole pane, edge to edge (Kyle, 2026-09-08: "not using the full
            window"). The 1520px cap from 2026-09-02 answered a page that
            huddled top-left at 2560; now every section stretches instead —
-           the shelves, the split grids and the You grid all size to the pane,
-           and only a chat line keeps a readable cap (.split .thread). */
+           the shelves, the split grids, the You grid and the chat threads all
+           size to the pane; no inner cap remains. */
         max-width: none;
         margin: 0;
         padding: calc(var(--bar-h) + 18px) 24px 40px;
@@ -2482,8 +2482,6 @@
         .yougrid, .yougrid.setup { grid-template-columns: 1fr; }
         .yc.c { grid-column: 1; grid-row: auto; }
     }
-    /* A chat wider than a comfortable line reads badly; the pane may be 1900px. */
-    .split .thread { max-width: 1200px; }
     .noderow { display: flex; align-items: center; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
     .bl { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-hover); animation: cm-blink 1.4s infinite; margin-right: 2px; vertical-align: middle; }
     @keyframes cm-blink { 50% { opacity: 0.25; } }