0.34.1: populate the log container filter (parse compose prefix)

The whole-stack log stream sends service:null on every line, so the
container filter dropdown only ever showed "All containers". docker compose
logs already prefixes each line with the container name (and an RFC3339
timestamp via --timestamps); parse that prefix client-side to recover the
container, populate the filter, and render time + container + message
separately (cleaner than the raw prefixed line).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/package.json

@@ -1,7 +1,7 @@
 {
   "name": "stackpilot-frontend",
   "private": true,
-  "version": "0.34.0",
+  "version": "0.34.1",
   "type": "module",
   "scripts": {
     "dev": "vite",

frontend/src/components/stacks/LogViewer.tsx

@@ -48,7 +48,44 @@ const levelStyles: Record<Level, { text: string; row: string }> = {
   debug: { text: "text-slate-400", row: "border-l-2 border-transparent" },
 };
 
-type LogLine = { service: string | null; line: string; level: Level };
+// `docker compose logs` prefixes every line with the container name (padded
+// for alignment) then `| `; with --timestamps an RFC3339 stamp follows. The
+// whole-stack stream sends service:null, so we recover the container here.
+const prefixRe = /^(\S+)\s+\|\s?(.*)$/s;
+const tsRe = /^(\d{4}-\d{2}-\d{2}T[\d:.]+Z?)\s(.*)$/s;
+
+function parseLine(
+  rawService: string | null,
+  raw: string
+): { service: string | null; time: string | null; msg: string } {
+  let service = rawService;
+  let body = raw;
+  if (!service) {
+    const m = prefixRe.exec(raw);
+    if (m) {
+      service = m[1];
+      body = m[2];
+    }
+  }
+  let time: string | null = null;
+  const t = tsRe.exec(body);
+  if (t) {
+    const d = new Date(t[1]);
+    if (!Number.isNaN(d.getTime())) {
+      time = d.toLocaleTimeString();
+      body = t[2];
+    }
+  }
+  return { service, time, msg: body };
+}
+
+type LogLine = {
+  service: string | null;
+  time: string | null;
+  msg: string;
+  raw: string;
+  level: Level;
+};
 
 export function LogViewer({ stackId, agentId }: { stackId: string; agentId?: number }) {
   const [lines, setLines] = useState<LogLine[]>([]);
@@ -83,10 +120,11 @@ export function LogViewer({ stackId, agentId }: { stackId: string; agentId?: num
       try {
         const msg = JSON.parse(ev.data);
         if (msg.type === "log") {
+          const { service, time, msg: body } = parseLine(msg.service, msg.line);
           setLines((prev) => {
             const next = [
               ...prev,
-              { service: msg.service, line: msg.line, level: levelFor(msg.line) },
+              { service, time, msg: body, raw: msg.line, level: levelFor(body) },
             ];
             return next.length > MAX_LINES ? next.slice(-MAX_LINES) : next;
           });
@@ -112,7 +150,7 @@ export function LogViewer({ stackId, agentId }: { stackId: string; agentId?: num
     const q = search.trim().toLowerCase();
     return lines.filter((l) => {
       if (serviceFilter !== "__all__" && l.service !== serviceFilter) return false;
-      if (q && !l.line.toLowerCase().includes(q)) return false;
+      if (q && !l.msg.toLowerCase().includes(q)) return false;
       return true;
     });
   }, [lines, serviceFilter, search]);
@@ -124,7 +162,7 @@ export function LogViewer({ stackId, agentId }: { stackId: string; agentId?: num
   }, [filtered, autoScroll]);
 
   const download = () => {
-    const blob = new Blob([filtered.map((l) => l.line).join("\n")], {
+    const blob = new Blob([filtered.map((l) => l.raw).join("\n")], {
       type: "text/plain",
     });
     const a = document.createElement("a");
@@ -212,10 +250,13 @@ export function LogViewer({ stackId, agentId }: { stackId: string; agentId?: num
               key={i}
               className={`whitespace-pre-wrap break-all py-0.5 pl-2 ${style.row}`}
             >
+              {l.time && (
+                <span className="mr-2 text-slate-500">{l.time}</span>
+              )}
               {l.service && (
                 <span className={`mr-2 ${colorFor(l.service)}`}>{l.service}</span>
               )}
-              <span className={style.text}>{l.line}</span>
+              <span className={style.text}>{l.msg}</span>
             </div>
           );
         })}