From 42ecfffbffe5913ccbcc8e7e982abff00e70e158 Mon Sep 17 00:00:00 2001
From: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>
Date: Fri, 27 Mar 2026 21:27:05 -0500
Subject: [PATCH] fix(regression): restore signal cold-runtime chunking

---
 extensions/signal/src/channel.ts   |  3 ++-
 extensions/signal/src/core.test.ts | 12 ++++++++++++
 src/plugin-sdk/signal.ts           |  1 +
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/extensions/signal/src/channel.ts b/extensions/signal/src/channel.ts
index 9c52690f4f0..a2e25cf469c 100644
--- a/extensions/signal/src/channel.ts
+++ b/extensions/signal/src/channel.ts
@@ -18,6 +18,7 @@ import { resolveSignalOutboundTarget } from "./outbound-session.js";
 import { probeSignal, type SignalProbe } from "./probe.js";
 import {
   buildBaseChannelStatusSummary,
+  chunkText,
   collectStatusIssuesFromLastError,
   createDefaultChannelRuntimeState,
   DEFAULT_ACCOUNT_ID,
@@ -306,7 +307,7 @@ export const signalPlugin: ChannelPlugin<ResolvedSignalAccount, SignalProbe> =
     outbound: {
       base: {
         deliveryMode: "direct",
-        chunker: (text, limit) => getSignalRuntime().channel.text.chunkText(text, limit),
+        chunker: chunkText,
         chunkerMode: "text",
         textChunkLimit: 4000,
         sendFormattedText: async ({ cfg, to, text, accountId, deps, abortSignal }) =>
diff --git a/extensions/signal/src/core.test.ts b/extensions/signal/src/core.test.ts
index b6febe42aec..f7f0644f1a8 100644
--- a/extensions/signal/src/core.test.ts
+++ b/extensions/signal/src/core.test.ts
@@ -131,6 +131,18 @@ describe("probeSignal", () => {
   });
 });
 
+describe("signal outbound", () => {
+  it("chunks outbound text without requiring Signal runtime initialization", () => {
+    clearSignalRuntime();
+    const chunker = signalPlugin.outbound?.chunker;
+    if (!chunker) {
+      throw new Error("signal outbound.chunker unavailable");
+    }
+
+    expect(chunker("alpha beta", 5)).toEqual(["alpha", "beta"]);
+  });
+});
+
 describe("classifySignalCliLogLine", () => {
   it("treats INFO/DEBUG as log", () => {
     expect(classifySignalCliLogLine("INFO  DaemonCommand - Started")).toBe("log");
diff --git a/src/plugin-sdk/signal.ts b/src/plugin-sdk/signal.ts
index dff80205233..ea62016d5f4 100644
--- a/src/plugin-sdk/signal.ts
+++ b/src/plugin-sdk/signal.ts
@@ -51,6 +51,7 @@ export { SignalConfigSchema } from "../config/zod-schema.providers-core.js";
 
 export { normalizeE164 } from "../utils.js";
 export { resolveChannelMediaMaxBytes } from "../channels/plugins/media-limits.js";
+export { chunkText } from "../auto-reply/chunk.js";
 export {
   createCliPathTextInput,
   createDelegatedTextInputShouldPrompt,