feat(logs): add Dev Previews to server logs page

vibn-frontend/app/[workspace]/project/[projectId]/(home)/logs/page.tsx

@@ -21,26 +21,40 @@ export default function LogsPage() {
   const { anatomy, loading } = useAnatomy(projectId, { pollMs: 8000 });
   const live = anatomy?.hosting.live ?? [];
 
-  const [activeUuid, setActiveUuid] = useState<string | null>(null);
+  const previews = anatomy?.hosting.previews ?? [];
+
+  const [activeItem, setActiveItem] = useState<{
+    type: "app" | "preview";
+    id: string;
+  } | null>(null);
   const [logs, setLogs] = useState<string | null>(null);
   const [logsLoading, setLogsLoading] = useState(false);
 
-  // Auto-select first app if none selected
+  // Auto-select first available item
   useEffect(() => {
-    if (live.length > 0 && !activeUuid) {
+    if (activeItem) return;
-      setActiveUuid(live[0].uuid);
+    if (live.length > 0) {
+      setActiveItem({ type: "app", id: live[0].uuid });
+    } else if (previews.length > 0) {
+      setActiveItem({ type: "preview", id: previews[0].id });
     }
-  }, [live, activeUuid]);
+  }, [live, previews, activeItem]);
 
-  const fetchLogs = async (uuid: string) => {
+  const fetchLogs = async (item: { type: "app" | "preview"; id: string }) => {
     setLogsLoading(true);
     try {
+      const action = item.type === "app" ? "apps.logs" : "dev_server.logs";
+      const payloadParams =
+        item.type === "app"
+          ? { uuid: item.id, lines: 100 }
+          : { id: item.id, lines: 100, projectId };
+
       const r = await fetch(`/api/mcp`, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify({
-          action: "apps.logs",
+          action,
-          params: { uuid, lines: 100 },
+          params: payloadParams,
         }),
       });
       const d = await r.json();
@@ -77,10 +91,10 @@ export default function LogsPage() {
     }
   };
 
-  // Fetch when active app changes
+  // Fetch when active item changes
   useEffect(() => {
-    if (activeUuid) fetchLogs(activeUuid);
+    if (activeItem) fetchLogs(activeItem);
-  }, [activeUuid]);
+  }, [activeItem]);
 
   return (
     <div
@@ -120,12 +134,12 @@ export default function LogsPage() {
           >
             <Loader2 size={15} className="animate-spin" /> Loading…
           </div>
-        ) : live.length === 0 ? (
+        ) : live.length === 0 && previews.length === 0 ? (
           <div style={{ padding: 24 }}>
             <EmptyState
               icon={<Activity size={22} />}
-              title="No apps running"
+              title="No active servers"
-              hint="Once you deploy an app, its runtime logs will appear here."
+              hint="Once you deploy an app or start a dev server, its runtime logs will appear here."
             />
           </div>
         ) : (
@@ -145,59 +159,51 @@ export default function LogsPage() {
                 flexDirection: "column",
                 borderRight: `1px solid ${THEME.borderSoft}`,
                 overflowY: "auto",
+                paddingBottom: 24,
               }}
             >
-              <header
+              {live.length > 0 && (
-                style={{
+                <div style={{ padding: "16px 20px 8px" }}>
-                  display: "flex",
+                  <h3
-                  alignItems: "center",
+                    style={{
-                  justifyContent: "space-between",
+                      fontSize: "0.7rem",
-                  padding: "10px 20px",
+                      fontWeight: 600,
-                  position: "sticky",
+                      color: THEME.muted,
-                  top: 0,
+                      textTransform: "uppercase",
-                  background: THEME.cardBg,
+                      letterSpacing: "0.06em",
-                  zIndex: 10,
+                      margin: 0,
-                  height: "41px",
+                    }}
-                  boxSizing: "border-box",
+                  >
-                  borderTopLeftRadius: THEME.radius,
+                    Live Apps
-                }}
+                  </h3>
-              >
+                </div>
-                <h3
+              )}
-                  style={{
-                    fontSize: "0.95rem",
-                    fontWeight: 600,
-                    color: THEME.ink,
-                    margin: 0,
-                  }}
-                >
-                  Apps
-                </h3>
-              </header>
               <div
                 style={{
                   display: "flex",
                   flexDirection: "column",
                   gap: 4,
-                  padding: "0 20px 20px 20px",
+                  padding: "0 20px",
                 }}
               >
                 {live.map((app) => (
                   <button
                     key={app.uuid}
-                    onClick={() => setActiveUuid(app.uuid)}
+                    onClick={() => setActiveItem({ type: "app", id: app.uuid })}
                     style={{
                       textAlign: "left",
-                      padding: "10px 14px",
+                      padding: "8px 12px",
                       background:
-                        activeUuid === app.uuid
+                        activeItem?.id === app.uuid
                           ? THEME.subtleBg
                           : "transparent",
                       border: "1px solid transparent",
                       borderRadius: THEME.radiusSm,
                       cursor: "pointer",
                       fontSize: "0.875rem",
-                      fontWeight: activeUuid === app.uuid ? 500 : 400,
+                      fontWeight: activeItem?.id === app.uuid ? 500 : 400,
-                      color: activeUuid === app.uuid ? THEME.ink : THEME.mid,
+                      color:
+                        activeItem?.id === app.uuid ? THEME.ink : THEME.mid,
                       transition: "all 0.1s ease",
                     }}
                   >
@@ -205,6 +211,58 @@ export default function LogsPage() {
                   </button>
                 ))}
               </div>
+
+              {previews.length > 0 && (
+                <div style={{ padding: "24px 20px 8px" }}>
+                  <h3
+                    style={{
+                      fontSize: "0.7rem",
+                      fontWeight: 600,
+                      color: THEME.muted,
+                      textTransform: "uppercase",
+                      letterSpacing: "0.06em",
+                      margin: 0,
+                    }}
+                  >
+                    Dev Previews
+                  </h3>
+                </div>
+              )}
+              <div
+                style={{
+                  display: "flex",
+                  flexDirection: "column",
+                  gap: 4,
+                  padding: "0 20px",
+                }}
+              >
+                {previews.map((preview) => (
+                  <button
+                    key={preview.id}
+                    onClick={() =>
+                      setActiveItem({ type: "preview", id: preview.id })
+                    }
+                    style={{
+                      textAlign: "left",
+                      padding: "8px 12px",
+                      background:
+                        activeItem?.id === preview.id
+                          ? THEME.subtleBg
+                          : "transparent",
+                      border: "1px solid transparent",
+                      borderRadius: THEME.radiusSm,
+                      cursor: "pointer",
+                      fontSize: "0.875rem",
+                      fontWeight: activeItem?.id === preview.id ? 500 : 400,
+                      color:
+                        activeItem?.id === preview.id ? THEME.ink : THEME.mid,
+                      transition: "all 0.1s ease",
+                    }}
+                  >
+                    {preview.name || `Port ${preview.port}`}
+                  </button>
+                ))}
+              </div>
             </div>
 
             {/* Log Viewer Column */}
@@ -236,7 +294,11 @@ export default function LogsPage() {
                     color: THEME.mid,
                   }}
                 >
-                  {live.find((a) => a.uuid === activeUuid)?.name ?? "Logs"}
+                  {activeItem?.type === "app"
+                    ? (live.find((a) => a.uuid === activeItem.id)?.name ??
+                      "Logs")
+                    : previews.find((p) => p.id === activeItem?.id)?.name ||
+                      "Dev Server Logs"}
                 </span>
                 <SecondaryButton
                   icon={
@@ -246,7 +308,7 @@ export default function LogsPage() {
                       <RefreshCw size={13} />
                     )
                   }
-                  onClick={() => activeUuid && fetchLogs(activeUuid)}
+                  onClick={() => activeItem && fetchLogs(activeItem)}
                   disabled={logsLoading}
                   style={{ padding: "4px 8px", fontSize: "0.75rem" }}
                 >