feat: selectable pairing-notify provider (discord optional, add fabric)

Pairing-code delivery was hardwired to Discord DM (notifyBotToken +
adminUserId required). Make the provider config-selectable.

- core/config.ts: add notifyProvider ("discord"|"fabric", default
  "discord" for back-compat); discord fields required only for discord;
  add fabric block (centerApiBase/apiKey/guildNodeId/channelId) required
  only for fabric
- notifications/types.ts: neutral PairingNotificationService interface
  (DiscordNotificationService kept as back-compat alias)
- notifications/fabric.ts: post the pairing message to a Fabric channel
  (agent/login -> guild token -> POST messages); self-contained, no
  Fabric plugin dependency
- notifications/factory.ts: select provider from config
- core/runtime.ts: wire via factory
- openclaw.plugin.json: notifyProvider enum + fabric object; drop
  notifyBotToken/adminUserId from required (conditional in code)
- tests: fabric notifier + provider-selection config (80 passing)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

plugin/core/config.ts

@@ -1,7 +1,22 @@
+export type NotifyProvider = "discord" | "fabric";
+
+export interface FabricNotifyConfig {
+  centerApiBase: string;
+  apiKey: string;
+  guildNodeId: string;
+  channelId: string;
+}
+
 export interface YonexusServerConfig {
   followerIdentifiers: string[];
-  notifyBotToken: string;
-  adminUserId: string;
+  /** Pairing-code delivery provider. Default: "discord" (back-compat). */
+  notifyProvider: NotifyProvider;
+  /** Required only when notifyProvider === "discord". */
+  notifyBotToken?: string;
+  /** Required only when notifyProvider === "discord". */
+  adminUserId?: string;
+  /** Required only when notifyProvider === "fabric". */
+  fabric?: FabricNotifyConfig;
   listenHost?: string;
   listenPort: number;
   publicWsUrl?: string;
@@ -67,14 +82,45 @@ export function validateYonexusServerConfig(raw: unknown): YonexusServerConfig {
     issues.push("followerIdentifiers must not contain duplicates");
   }
 
-  const rawNotifyBotToken = source.notifyBotToken;
-  if (!isNonEmptyString(rawNotifyBotToken)) {
-    issues.push("notifyBotToken is required");
+  const rawNotifyProvider = source.notifyProvider;
+  let notifyProvider: NotifyProvider = "discord";
+  if (rawNotifyProvider === undefined || rawNotifyProvider === null) {
+    notifyProvider = "discord";
+  } else if (rawNotifyProvider === "discord" || rawNotifyProvider === "fabric") {
+    notifyProvider = rawNotifyProvider;
+  } else {
+    issues.push('notifyProvider must be "discord" or "fabric"');
   }
 
+  // Discord fields — required only for the discord provider.
+  const rawNotifyBotToken = source.notifyBotToken;
   const rawAdminUserId = source.adminUserId;
-  if (!isNonEmptyString(rawAdminUserId)) {
-    issues.push("adminUserId is required");
+  if (notifyProvider === "discord") {
+    if (!isNonEmptyString(rawNotifyBotToken)) {
+      issues.push('notifyBotToken is required when notifyProvider is "discord"');
+    }
+    if (!isNonEmptyString(rawAdminUserId)) {
+      issues.push('adminUserId is required when notifyProvider is "discord"');
+    }
+  }
+
+  // Fabric fields — required only for the fabric provider.
+  let fabric: FabricNotifyConfig | undefined;
+  if (notifyProvider === "fabric") {
+    const f = (source.fabric && typeof source.fabric === "object"
+      ? source.fabric
+      : {}) as Record<string, unknown>;
+    const centerApiBase = normalizeOptionalString(f.centerApiBase);
+    const apiKey = normalizeOptionalString(f.apiKey);
+    const guildNodeId = normalizeOptionalString(f.guildNodeId);
+    const channelId = normalizeOptionalString(f.channelId);
+    if (!centerApiBase) issues.push("fabric.centerApiBase is required when notifyProvider is \"fabric\"");
+    if (!apiKey) issues.push("fabric.apiKey is required when notifyProvider is \"fabric\"");
+    if (!guildNodeId) issues.push("fabric.guildNodeId is required when notifyProvider is \"fabric\"");
+    if (!channelId) issues.push("fabric.channelId is required when notifyProvider is \"fabric\"");
+    if (centerApiBase && apiKey && guildNodeId && channelId) {
+      fabric = { centerApiBase, apiKey, guildNodeId, channelId };
+    }
   }
 
   const rawListenPort = source.listenPort;
@@ -93,14 +139,18 @@ export function validateYonexusServerConfig(raw: unknown): YonexusServerConfig {
     throw new YonexusServerConfigError(issues);
   }
 
-  const notifyBotToken = rawNotifyBotToken as string;
-  const adminUserId = rawAdminUserId as string;
   const listenPort = rawListenPort as number;
 
   return {
     followerIdentifiers,
-    notifyBotToken: notifyBotToken.trim(),
-    adminUserId: adminUserId.trim(),
+    notifyProvider,
+    notifyBotToken: isNonEmptyString(rawNotifyBotToken)
+      ? rawNotifyBotToken.trim()
+      : undefined,
+    adminUserId: isNonEmptyString(rawAdminUserId)
+      ? rawAdminUserId.trim()
+      : undefined,
+    fabric,
     listenHost,
     listenPort,
     publicWsUrl

plugin/core/runtime.ts

@@ -42,10 +42,8 @@ import { verifySignature } from "../../../Yonexus.Protocol/src/crypto.js";
 import type { YonexusServerStore } from "./store.js";
 import { type ClientConnection, type ServerTransport } from "./transport.js";
 import { createPairingService, type PairingService } from "../services/pairing.js";
-import {
-  createDiscordNotificationService,
-  type DiscordNotificationService
-} from "../notifications/discord.js";
+import type { PairingNotificationService } from "../notifications/types.js";
+import { createNotificationService } from "../notifications/factory.js";
 import { safeErrorMessage } from "./logging.js";
 import type { ServerRuleRegistry } from "./rules.js";
 
@@ -53,7 +51,7 @@ export interface YonexusServerRuntimeOptions {
   config: YonexusServerConfig;
   store: YonexusServerStore;
   transport: ServerTransport;
-  notificationService?: DiscordNotificationService;
+  notificationService?: PairingNotificationService;
   ruleRegistry?: ServerRuleRegistry;
   onClientAuthenticated?: (identifier: string) => void;
   now?: () => number;
@@ -70,7 +68,7 @@ export class YonexusServerRuntime {
   private readonly now: () => number;
   private readonly registry: ServerRegistry;
   private readonly pairingService: PairingService;
-  private readonly notificationService: DiscordNotificationService;
+  private readonly notificationService: PairingNotificationService;
   private readonly sweepIntervalMs: number;
   private sweepTimer: NodeJS.Timeout | null = null;
   private started = false;
@@ -86,10 +84,7 @@ export class YonexusServerRuntime {
     this.pairingService = createPairingService({ now: this.now });
     this.notificationService =
       options.notificationService ??
-      createDiscordNotificationService({
-        botToken: options.config.notifyBotToken,
-        adminUserId: options.config.adminUserId
-      });
+      createNotificationService(options.config);
   }
 
   get state(): ServerLifecycleState {

plugin/index.ts

@@ -265,5 +265,11 @@ export {
   type DiscordNotificationService,
   type DiscordNotificationConfig
 } from "./notifications/discord.js";
+export type { PairingNotificationService } from "./notifications/types.js";
+export {
+  createFabricNotificationService,
+  type FabricNotificationConfig
+} from "./notifications/fabric.js";
+export { createNotificationService } from "./notifications/factory.js";
 
 export { manifest };

plugin/notifications/discord.ts

@@ -5,15 +5,14 @@
  */
 
 import type { PairingRequest } from "../services/pairing.js";
+import type { PairingNotificationService } from "./types.js";
 import { redactPairingCode, safeErrorMessage } from "../core/logging.js";
 
-export interface DiscordNotificationService {
-  /**
-   * Send a pairing code notification to the admin user.
-   * @returns Whether the notification was sent successfully
-   */
-  sendPairingNotification(request: PairingRequest): Promise<boolean>;
-}
+/**
+ * Back-compat alias. The Discord notifier is one provider implementing
+ * the neutral {@link PairingNotificationService} contract.
+ */
+export type DiscordNotificationService = PairingNotificationService;
 
 export interface DiscordNotificationConfig {
   botToken: string;

plugin/notifications/fabric.ts

@@ -0,0 +1,156 @@
+/**
+ * Yonexus Server - Fabric Notification Service
+ *
+ * Sends pairing notifications to a human admin via a Fabric channel.
+ *
+ * Flow:
+ * 1. Exchange the Center API key for a user session
+ *    (POST {centerApiBase}/auth/agent/login → user + guild tokens)
+ * 2. Resolve the target guild's endpoint + access token by guildNodeId
+ * 3. POST the formatted pairing message to the configured channel
+ *    ({guildEndpoint}/api/channels/{channelId}/messages)
+ *
+ * Self-contained (global fetch) and dependency-free, mirroring the
+ * Discord notifier; it does not import the Fabric.OpenclawPlugin.
+ */
+
+import type { PairingRequest } from "../services/pairing.js";
+import type { PairingNotificationService } from "./types.js";
+import { formatPairingMessage } from "./discord.js";
+import { redactPairingCode, safeErrorMessage } from "../core/logging.js";
+
+export interface FabricNotificationConfig {
+  /** Fabric Center API base, e.g. http://localhost:7001/api */
+  centerApiBase: string;
+  /** Fabric Center API key (fak_…) for the notifier identity */
+  apiKey: string;
+  /** Target guild node id the admin channel lives on */
+  guildNodeId: string;
+  /** Channel id (a Fabric channel the admin watches) */
+  channelId: string;
+}
+
+interface FabricSession {
+  user: { id: string };
+  guilds: Array<{ nodeId: string; endpoint: string }>;
+  guildAccessTokens: Array<{ guildNodeId: string; token: string }>;
+}
+
+export interface FabricApiResponse {
+  ok: boolean;
+  status: number;
+  json(): Promise<unknown>;
+}
+
+export type FabricFetch = (
+  input: string,
+  init?: { method?: string; headers?: Record<string, string>; body?: string }
+) => Promise<FabricApiResponse>;
+
+/**
+ * Create a Fabric notification service backed by the Fabric Center +
+ * Guild REST API.
+ */
+export function createFabricNotificationService(
+  config: FabricNotificationConfig,
+  options: { fetcher?: FabricFetch } = {}
+): PairingNotificationService {
+  const fetcher = options.fetcher ?? getDefaultFetch();
+
+  return {
+    async sendPairingNotification(request: PairingRequest): Promise<boolean> {
+      if (
+        !config.centerApiBase.trim() ||
+        !config.apiKey.trim() ||
+        !config.guildNodeId.trim() ||
+        !config.channelId.trim()
+      ) {
+        console.error("[Yonexus.Server] Fabric notification misconfigured", {
+          hasCenterApiBase: Boolean(config.centerApiBase.trim()),
+          hasApiKey: Boolean(config.apiKey.trim()),
+          hasGuildNodeId: Boolean(config.guildNodeId.trim()),
+          hasChannelId: Boolean(config.channelId.trim())
+        });
+        return false;
+      }
+
+      try {
+        const base = config.centerApiBase.replace(/\/+$/, "");
+        const loginRes = await fetcher(`${base}/auth/agent/login`, {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ apiKey: config.apiKey })
+        });
+        if (!loginRes.ok) {
+          throw new Error(`agent/login failed with status ${loginRes.status}`);
+        }
+        const session = (await loginRes.json()) as FabricSession;
+
+        const endpoint = session.guilds
+          .find((g) => g.nodeId === config.guildNodeId)
+          ?.endpoint?.replace(/\/+$/, "");
+        const token = session.guildAccessTokens.find(
+          (t) => t.guildNodeId === config.guildNodeId
+        )?.token;
+        if (!endpoint || !token) {
+          throw new Error(
+            `notifier identity is not a member of guild ${config.guildNodeId}`
+          );
+        }
+
+        const msgRes = await fetcher(
+          `${endpoint}/api/channels/${config.channelId}/messages`,
+          {
+            method: "POST",
+            headers: {
+              Authorization: `Bearer ${token}`,
+              "Content-Type": "application/json"
+            },
+            body: JSON.stringify({
+              content: formatPairingMessage(request),
+              authorUserId: session.user.id
+            })
+          }
+        );
+        if (!msgRes.ok) {
+          throw new Error(`message post failed with status ${msgRes.status}`);
+        }
+        await msgRes.json();
+
+        console.log("[Yonexus.Server] Pairing notification sent via Fabric", {
+          identifier: request.identifier,
+          pairingCode: redactPairingCode(request.pairingCode),
+          expiresAt: request.expiresAt,
+          ttlSeconds: request.ttlSeconds,
+          guildNodeId: config.guildNodeId,
+          channelId: config.channelId
+        });
+        return true;
+      } catch (error) {
+        console.error(
+          "[Yonexus.Server] Failed to send Fabric pairing notification",
+          {
+            identifier: request.identifier,
+            pairingCode: redactPairingCode(request.pairingCode),
+            guildNodeId: config.guildNodeId,
+            channelId: config.channelId,
+            error: safeErrorMessage(error)
+          }
+        );
+        return false;
+      }
+    }
+  };
+}
+
+function getDefaultFetch(): FabricFetch {
+  if (typeof fetch !== "function") {
+    throw new Error("Global fetch is not available in this runtime");
+  }
+  return (input, init) =>
+    fetch(input, {
+      method: init?.method,
+      headers: init?.headers,
+      body: init?.body
+    }) as Promise<FabricApiResponse>;
+}

plugin/notifications/factory.ts

@@ -0,0 +1,30 @@
+/**
+ * Yonexus Server - Pairing notification provider factory.
+ *
+ * Selects the notification provider from config (`notifyProvider`).
+ * Discord is the default for backward compatibility.
+ */
+
+import type { YonexusServerConfig } from "../core/config.js";
+import type { PairingNotificationService } from "./types.js";
+import { createDiscordNotificationService } from "./discord.js";
+import { createFabricNotificationService } from "./fabric.js";
+
+export function createNotificationService(
+  config: YonexusServerConfig
+): PairingNotificationService {
+  if (config.notifyProvider === "fabric") {
+    if (!config.fabric) {
+      throw new Error(
+        'Yonexus.Server: notifyProvider is "fabric" but fabric config is missing'
+      );
+    }
+    return createFabricNotificationService(config.fabric);
+  }
+
+  // Default / "discord"
+  return createDiscordNotificationService({
+    botToken: config.notifyBotToken ?? "",
+    adminUserId: config.adminUserId ?? ""
+  });
+}

plugin/notifications/types.ts

@@ -0,0 +1,18 @@
+/**
+ * Yonexus Server - Pairing notification provider interface.
+ *
+ * A provider delivers the out-of-band pairing code to a human admin.
+ * Implementations: Discord DM (`./discord.ts`), Fabric channel
+ * (`./fabric.ts`). The provider is selected by config (see
+ * `core/config.ts` `notifyProvider`).
+ */
+
+import type { PairingRequest } from "../services/pairing.js";
+
+export interface PairingNotificationService {
+  /**
+   * Send a pairing code notification to the admin.
+   * @returns Whether the notification was sent successfully.
+   */
+  sendPairingNotification(request: PairingRequest): Promise<boolean>;
+}

plugin/openclaw.plugin.json

@@ -16,12 +16,24 @@
         "type": "array",
         "items": { "type": "string" }
       },
+      "notifyProvider": { "type": "string", "enum": ["discord", "fabric"] },
       "notifyBotToken": { "type": "string" },
       "adminUserId": { "type": "string" },
+      "fabric": {
+        "type": "object",
+        "additionalProperties": false,
+        "properties": {
+          "centerApiBase": { "type": "string" },
+          "apiKey": { "type": "string" },
+          "guildNodeId": { "type": "string" },
+          "channelId": { "type": "string" }
+        },
+        "required": ["centerApiBase", "apiKey", "guildNodeId", "channelId"]
+      },
       "listenHost": { "type": "string" },
       "listenPort": { "type": "number" },
       "publicWsUrl": { "type": "string" }
     },
-    "required": ["notifyBotToken", "adminUserId", "listenPort"]
+    "required": ["listenPort"]
   }
 }