diff --git a/extensions/slack/src/monitor/message-handler/dispatch-progress.ts b/extensions/slack/src/monitor/message-handler/dispatch-progress.ts
index b5c0b94b2e93..9e01dd8afdff 100644
--- a/extensions/slack/src/monitor/message-handler/dispatch-progress.ts
+++ b/extensions/slack/src/monitor/message-handler/dispatch-progress.ts
@@ -322,7 +322,7 @@ export function createSlackProgressRuntime(runtimeParams: {
     mode: slackStreaming.mode,
     active: progressDraftActive,
     seed: progressSeed,
-    formatLine: escapeSlackMrkdwn,
+    formatLine: formatSlackProgressDraftLine,
     reasoningLinePrefix: "🧠 ",
     commentaryLinePrefix: "💬 ",
     reasoningGate: previewToolProgressEnabled,
@@ -442,7 +442,7 @@ export function createSlackProgressRuntime(runtimeParams: {
       entry: account.config,
       lines: [...progressDraft.getSnapshot().lines],
       seed: progressSeed,
-      formatLine: escapeSlackMrkdwn,
+      formatLine: formatSlackProgressDraftLine,
       narration: explanation,
       plan: steps,
     });
@@ -656,3 +656,7 @@ export function createSlackProgressRuntime(runtimeParams: {
     shouldYieldDraftProgress: () => shouldYieldDraftProgress(),
   };
 }
+
+function formatSlackProgressDraftLine(line: string): string {
+  return /^(?:🧠|💬)\s/u.test(line) ? line : escapeSlackMrkdwn(line);
+}
diff --git a/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts b/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
index 47690f2ca986..9eabec7ab189 100644
--- a/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
+++ b/extensions/slack/src/monitor/message-handler/dispatch.preview-fallback.test.ts
@@ -1966,7 +1966,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(draftStream.update).toHaveBeenLastCalledWith(
-      ["Shelling", "", "• exec", "🧠 \\_Reading the Slack handler\\_"].join("\n"),
+      ["Shelling", "", "• exec", "🧠 _Reading the Slack handler_"].join("\n"),
     );
     const updates = draftStream.update.mock.calls.map((call) => String(call[0]));
     expect(updates.join("\n")).not.toContain("Reasoning");
@@ -1995,7 +1995,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(draftStream.update).toHaveBeenLastCalledWith(
-      ["Shelling", "", "• exec", "🧠 \\_Reading Checking\\_"].join("\n"),
+      ["Shelling", "", "• exec", "🧠 _Reading Checking_"].join("\n"),
     );
     const updates = draftStream.update.mock.calls.map((call) => String(call[0]));
     expect(updates.join("\n")).not.toContain("Checking Reading");
@@ -2022,7 +2022,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(draftStream.update).toHaveBeenLastCalledWith(
-      ["Shelling", "", "🧠 \\_Reading Checking\\_"].join("\n"),
+      ["Shelling", "", "🧠 _Reading Checking_"].join("\n"),
     );
     const updates = draftStream.update.mock.calls.map((call) => String(call[0]));
     expect(updates.join("\n")).toContain("Reading Checking");
@@ -2049,7 +2049,7 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     );
 
     expect(draftStream.update).toHaveBeenLastCalledWith(
-      ["Shelling", "", "🧠 \\_Thinking about Slack preview state\\_"].join("\n"),
+      ["Shelling", "", "🧠 _Thinking about Slack preview state_"].join("\n"),
     );
   });
 
@@ -3749,6 +3749,37 @@ describe("dispatchPreparedSlackMessage preview fallback", () => {
     expect(draftStream.update).toHaveBeenCalledTimes(updateCount);
   });
 
+  it("preserves Markdown in Slack commentary drafts for the outbound renderer", async () => {
+    const draftStream = createDraftStreamStub();
+    createSlackDraftStreamMock.mockReturnValueOnce(draftStream);
+    mockedSlackStreamingMode = "progress";
+    mockedSlackDraftMode = "status_final";
+    mockedDispatchSequence = [];
+    mockedReplyOptionEvents = [
+      {
+        kind: "item",
+        itemKind: "preamble",
+        itemId: "preamble-1",
+        progressText: "I’m using the `monorepo` skill on Linux x86_64.",
+      },
+    ];
+
+    await dispatchPreparedSlackMessage(
+      createPreparedSlackMessage({
+        accountConfig: {
+          streaming: {
+            mode: "progress",
+            progress: { label: false, commentary: true, toolProgress: false },
+          },
+        },
+      }),
+    );
+
+    expect(draftStream.update).toHaveBeenLastCalledWith(
+      "💬 I’m using the `monorepo` skill on Linux x86_64.",
+    );
+  });
+
   it("uses the enterprise event client for Slack commentary drafts", async () => {
     const draftStream = createDraftStreamStub();
     createSlackDraftStreamMock.mockReturnValueOnce(draftStream);
diff --git a/extensions/slack/src/progress-blocks.test.ts b/extensions/slack/src/progress-blocks.test.ts
index aa4a33671c83..02f9e82b0770 100644
--- a/extensions/slack/src/progress-blocks.test.ts
+++ b/extensions/slack/src/progress-blocks.test.ts
@@ -200,6 +200,32 @@ describe("buildSlackProgressDraftBlocks", () => {
     ).toEqual([legacyLineBlock("• *Preamble*", "—"), legacyLineBlock("🛠️ *Exec*", "run tests")]);
   });
 
+  it("renders authored commentary Markdown in legacy rich draft details", () => {
+    expect(
+      buildSlackProgressDraftBlocks({
+        lines: [
+          {
+            id: "commentary:preamble-1",
+            kind: "item",
+            label: "Commentary",
+            text: "💬 Rendering the `sample-widget` fixture on **example.test**.",
+            prefix: false,
+          },
+          {
+            id: "reasoning",
+            kind: "item",
+            label: "Reasoning",
+            text: "_Reading the Slack handler_",
+            prefix: false,
+          },
+        ],
+      }),
+    ).toEqual([
+      legacyLineBlock("• *Commentary*", "Rendering the `sample-widget` fixture on *example.test*."),
+      legacyLineBlock("• *Reasoning*", "_Reading the Slack handler_"),
+    ]);
+  });
+
   it("does not emit legacy rich draft blocks when there are no lines or heading", () => {
     expect(
       buildSlackProgressDraftBlocks({
diff --git a/extensions/slack/src/progress-blocks.ts b/extensions/slack/src/progress-blocks.ts
index 33d1432ac9a8..4123e664c9a3 100644
--- a/extensions/slack/src/progress-blocks.ts
+++ b/extensions/slack/src/progress-blocks.ts
@@ -8,6 +8,7 @@ import {
   formatPlanChecklistLines,
 } from "openclaw/plugin-sdk/channel-outbound";
 import { SLACK_MAX_BLOCKS } from "./blocks-input.js";
+import { normalizeSlackOutboundText } from "./format.js";
 import { escapeSlackMrkdwn } from "./monitor/mrkdwn.js";
 import { truncateSlackText } from "./truncate.js";
 
@@ -77,9 +78,20 @@ function legacyLineTitle(line: ChannelProgressDraftLine): string {
   return `${line.icon ?? "•"} *${escapeSlackMrkdwn(line.label)}*`;
 }
 
+function isAuthoredProgressLine(line: ChannelProgressDraftLine): boolean {
+  return line.id === "reasoning" || line.id?.startsWith("commentary:") === true;
+}
+
 function legacyLineDetail(line: ChannelProgressDraftLine, maxChars: number): string {
   const detail = lineDetailParts(line).join(" · ");
-  return detail ? escapeSlackMrkdwn(compactDetail(detail, maxChars)) : "—";
+  if (detail) {
+    return escapeSlackMrkdwn(compactDetail(detail, maxChars));
+  }
+  if (isAuthoredProgressLine(line)) {
+    const text = line.text.replace(/^(?:🧠|💬)\s+/u, "");
+    return normalizeSlackOutboundText(compactDetail(text, maxChars));
+  }
+  return "—";
 }
 
 function lineTaskTitle(line: ChannelProgressDraftLine, maxLineChars: number): string {