style(ui): flat menu sheets, digests folded with job runs, shorter spend caption

ui/src/lib/rail/rail.svelte

@@ -133,6 +133,22 @@
 
   const refresh = () => index.load().catch(() => undefined);
 
+  // What the agent did on its own that day: digests and scheduled runs.
+  function quietSummary(group: DayGroup): string {
+    const parts: string[] = [];
+    if (group.forks.length) {
+      parts.push(
+        `${group.forks.length} ${group.forks.length === 1 ? "digest" : "digests"}`
+      );
+    }
+    if (group.jobs.length) {
+      parts.push(
+        `${group.jobs.length} ${group.jobs.length === 1 ? "job run" : "job runs"}`
+      );
+    }
+    return parts.join(" · ");
+  }
+
   const linkOf = (id: string) => href?.(id);
 </script>
 
@@ -294,7 +310,7 @@
                   {row}
                 />
               {/each}
-              {#each [...group.forks, ...group.others] as row (row.id)}
+              {#each group.others as row (row.id)}
                 <Strip
                   {client}
                   current={row.id === selected}
@@ -306,28 +322,27 @@
                   {row}
                 />
               {/each}
-              {#if group.jobs.length > 0}
-                {@const shownJobs = jobsOpen.has(group.day)}
+              {#if group.forks.length + group.jobs.length > 0}
+                {@const shownQuiet = jobsOpen.has(group.day)}
                 <button
-                  aria-expanded={shownJobs}
+                  aria-expanded={shownQuiet}
                   class="strip w-full text-left text-muted-foreground text-xs"
                   onclick={() => toggleJobs(group.day)}
                   type="button"
                 >
                   <span class="size-5"></span>
                   <span>
-                    {group.jobs.length}
-                    {group.jobs.length === 1 ? "job run" : "job runs"}
-                    · {shownJobs ? "hide" : "show"}
+                    {quietSummary(group)}
+                    · {shownQuiet ? "hide" : "show"}
                   </span>
                   <span></span>
                 </button>
-                {#if shownJobs}
-                  {#each group.jobs as row (row.id)}
+                {#if shownQuiet}
+                  {#each [...group.forks, ...group.jobs] as row (row.id)}
                     <Strip
                       {client}
                       current={row.id === selected}
-                      detail={row.last_item?.text ?? ""}
+                      detail={row.last_item?.text ?? `${row.kind} · ${row.status}`}
                       href={linkOf(row.id)}
                       {now}
                       onChanged={refresh}