Use database fleet registry and gate RCON polling on container readiness

src/lib/server/pipeline/restart-rollout.ts

@@ -21,6 +21,13 @@ function slotFor(server: string): RestartSlot | undefined {
     return db().prepare('SELECT * FROM restart_rollout WHERE server = ?').get(server) as RestartSlot | undefined;
 }
 
+/** The queued restart may still expose the previous healthy container. */
+export function restartSettling(server: string): boolean {
+    const slot = slotFor(server);
+    return requestsInFlight.has(server) || !!(slot && !slot.healthy_at
+        && Date.now() - Date.parse(slot.requested_at) < HEALTH_POLL_MS);
+}
+
 export function rolloutWaitReason(server: string): string | null {
     const slot = slotFor(server);
     if (slot?.healthy_at === null) {
@@ -49,6 +56,7 @@ export async function restartInRollout(server: string): Promise<RolloutRestartRe
     if (waitReason) return { kind: 'queued', message: waitReason };
 
     requestsInFlight.add(server);
+    db().prepare("UPDATE servers SET container_state = 'restarting', last_error = NULL, last_reply_snippet = NULL WHERE name = ?").run(server);
     try {
         const result = await komodoRestart(server);
         if (result.ok) return { kind: 'started' };