Add WhatsApp session bind/unbind to Admin Runtime, and fix related Admin JS errors.

Expose sidecar status, start/stop, QR bind, and unbind so 405 session failures are visible instead of a stuck connecting state.

Co-authored-by: Cursor <cursoragent@cursor.com>

runtime/operations/whatsapp_bridge/status.ts

@@ -0,0 +1,61 @@
+import fs from "node:fs";
+import path from "node:path";
+
+export type BridgeStatus = {
+  connection: "connecting" | "qr" | "open" | "close" | "logged_out" | "needs_rebind" | "stopped";
+  me: string;
+  phone: string;
+  qr: string;
+  qr_data_url: string;
+  qr_png: string;
+  last_disconnect_reason: string;
+  last_disconnect_status: number | null;
+  last_error: string;
+  reconnect_attempt: number;
+  login_only: boolean;
+  updated_at: string;
+};
+
+const STATUS_FILE = "bridge_status.json";
+
+function phoneFromMe(me: string): string {
+  const head = String(me || "").split("@")[0]?.split(":")[0] || "";
+  return head.replace(/\D/g, "");
+}
+
+export function statusPath(stateDir: string): string {
+  return path.join(stateDir, STATUS_FILE);
+}
+
+export function writeBridgeStatus(stateDir: string, patch: Partial<BridgeStatus>): BridgeStatus {
+  fs.mkdirSync(stateDir, { recursive: true });
+  const p = statusPath(stateDir);
+  let prev: Partial<BridgeStatus> = {};
+  try {
+    if (fs.existsSync(p)) {
+      prev = JSON.parse(fs.readFileSync(p, "utf8")) as Partial<BridgeStatus>;
+    }
+  } catch {
+    prev = {};
+  }
+  const me = String(patch.me ?? prev.me ?? "").trim();
+  const next: BridgeStatus = {
+    connection: (patch.connection || prev.connection || "connecting") as BridgeStatus["connection"],
+    me,
+    phone: String(patch.phone ?? prev.phone ?? phoneFromMe(me)).trim(),
+    qr: String(patch.qr ?? prev.qr ?? ""),
+    qr_data_url: String(patch.qr_data_url ?? prev.qr_data_url ?? ""),
+    qr_png: String(patch.qr_png ?? prev.qr_png ?? ""),
+    last_disconnect_reason: String(patch.last_disconnect_reason ?? prev.last_disconnect_reason ?? ""),
+    last_disconnect_status:
+      patch.last_disconnect_status === undefined
+        ? (typeof prev.last_disconnect_status === "number" ? prev.last_disconnect_status : null)
+        : patch.last_disconnect_status,
+    last_error: String(patch.last_error ?? prev.last_error ?? ""),
+    reconnect_attempt: Number(patch.reconnect_attempt ?? prev.reconnect_attempt ?? 0) || 0,
+    login_only: Boolean(patch.login_only ?? prev.login_only ?? false),
+    updated_at: new Date().toISOString(),
+  };
+  fs.writeFileSync(p, JSON.stringify(next, null, 2), "utf8");
+  return next;
+}