fix(config): allow plugin channels in hooks mappings

src/config/config.hooks-module-paths.test.ts

@@ -76,4 +76,39 @@ describe("config hooks module paths", () => {
       "hooks.internal.handlers.0.module",
     );
   });
+
+  it("accepts hooks.mappings[].channel runtime plugin ids", () => {
+    const res = validateConfigObjectWithPlugins({
+      agents: { list: [{ id: "pi" }] },
+      hooks: {
+        mappings: [
+          {
+            match: { path: "custom" },
+            action: "agent",
+            channel: "feishu",
+            messageTemplate: "hello",
+          },
+        ],
+      },
+    });
+    expect(res.ok).toBe(true);
+  });
+
+  it("rejects blank hooks.mappings[].channel values", () => {
+    expectRejectedIssuePath(
+      {
+        agents: { list: [{ id: "pi" }] },
+        hooks: {
+          mappings: [
+            {
+              match: { path: "custom" },
+              action: "agent",
+              channel: "   ",
+            },
+          ],
+        },
+      },
+      "hooks.mappings.0.channel",
+    );
+  });
 });

src/config/types.hooks.ts

@@ -22,17 +22,11 @@ export type HookMappingConfig = {
   deliver?: boolean;
   /** DANGEROUS: Disable external content safety wrapping for this hook. */
   allowUnsafeExternalContent?: boolean;
-  channel?:
-    | "last"
-    | "whatsapp"
-    | "telegram"
-    | "discord"
-    | "irc"
-    | "googlechat"
-    | "slack"
-    | "signal"
-    | "imessage"
-    | "msteams";
+  /**
+   * "last" or any runtime channel id (including plugin channels).
+   * Validation against configured/registered channels happens in gateway hooks runtime.
+   */
+  channel?: "last" | (string & {});
   to?: string;
   /** Override model for this hook (provider/model or alias). */
   model?: string;

src/config/zod-schema.hooks.ts

@@ -49,19 +49,10 @@ export const HookMappingSchema = z
     textTemplate: z.string().optional(),
     deliver: z.boolean().optional(),
     allowUnsafeExternalContent: z.boolean().optional(),
-    channel: z
-      .union([
-        z.literal("last"),
-        z.literal("whatsapp"),
-        z.literal("telegram"),
-        z.literal("discord"),
-        z.literal("irc"),
-        z.literal("slack"),
-        z.literal("signal"),
-        z.literal("imessage"),
-        z.literal("msteams"),
-      ])
-      .optional(),
+    // Keep this open-ended so runtime channel plugins (for example feishu) can be
+    // referenced without hard-coding every channel id in the config schema.
+    // Runtime still validates the resolved value against currently registered channels.
+    channel: z.string().trim().min(1).optional(),
     to: z.string().optional(),
     model: z.string().optional(),
     thinking: z.string().optional(),