feat: IRC — add first-class channel support

Adds IRC as a first-class channel with core config surfaces (schema/hints/dock), plugin auto-enable detection, routing/policy alignment, and docs/tests.

Co-authored-by: Vignesh <vigneshnatarajan92@gmail.com>

extensions/irc/src/normalize.test.ts

@@ -0,0 +1,46 @@
+import { describe, expect, it } from "vitest";
+import {
+  buildIrcAllowlistCandidates,
+  normalizeIrcAllowEntry,
+  normalizeIrcMessagingTarget,
+  resolveIrcAllowlistMatch,
+} from "./normalize.js";
+
+describe("irc normalize", () => {
+  it("normalizes targets", () => {
+    expect(normalizeIrcMessagingTarget("irc:channel:openclaw")).toBe("#openclaw");
+    expect(normalizeIrcMessagingTarget("user:alice")).toBe("alice");
+    expect(normalizeIrcMessagingTarget("\n")).toBeUndefined();
+  });
+
+  it("normalizes allowlist entries", () => {
+    expect(normalizeIrcAllowEntry("IRC:User:Alice!u@h")).toBe("alice!u@h");
+  });
+
+  it("matches senders by nick/user/host candidates", () => {
+    const message = {
+      messageId: "m1",
+      target: "#chan",
+      senderNick: "Alice",
+      senderUser: "ident",
+      senderHost: "example.org",
+      text: "hi",
+      timestamp: Date.now(),
+      isGroup: true,
+    };
+
+    expect(buildIrcAllowlistCandidates(message)).toContain("alice!ident@example.org");
+    expect(
+      resolveIrcAllowlistMatch({
+        allowFrom: ["alice!ident@example.org"],
+        message,
+      }).allowed,
+    ).toBe(true);
+    expect(
+      resolveIrcAllowlistMatch({
+        allowFrom: ["bob"],
+        message,
+      }).allowed,
+    ).toBe(false);
+  });
+});