community: the page fills the pane edge to edge instead of sitting in a centred 1520px column

src/views/Community.svelte

@@ -2090,13 +2090,14 @@
        throughout (the approved knob): 46px rows, 12px gaps and pads. */
     .community {
         position: relative;
-        /* A designed page width, centred in the pane: at 2560 the sections used
-           to huddle top-left with the rest of the pane empty (Kyle, 2026-09-02).
-           Below the cap nothing changes. */
-        max-width: 1520px;
-        margin: 0 auto;
-        padding-top: calc(var(--bar-h) + 18px);
-        padding-bottom: 40px;
+        /* 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). */
+        max-width: none;
+        margin: 0;
+        padding: calc(var(--bar-h) + 18px) 24px 40px;
         --row: 46px;
         --gap: 12px;
         --pad: 12px;