From 5ea8a276eb2186919c59545d86a898020ef023bf Mon Sep 17 00:00:00 2001
From: Mario Zechner <badlogicgames@gmail.com>
Date: Mon, 20 Apr 2026 14:46:18 +0200
Subject: [PATCH] fix(coding-agent): preserve share page tool output
 indentation closes #3440

---
 packages/coding-agent/CHANGELOG.md                   |  1 +
 .../coding-agent/src/core/export-html/template.css   |  1 +
 .../coding-agent/test/export-html-whitespace.test.ts | 12 ++++++++++++
 3 files changed, 14 insertions(+)
 create mode 100644 packages/coding-agent/test/export-html-whitespace.test.ts

diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 113d29c2..b45624eb 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ### Fixed
 
+- Fixed shared/exported plain-text tool output to preserve indentation instead of collapsing leading whitespace in the web share page ([#3440](https://github.com/badlogic/pi-mono/issues/3440))
 - Fixed skill resolution to dedupe symlinked aliases by canonical path, so `pi config` no longer shows duplicate skill entries when `~/.pi/agent/skills` points to `~/.agents/skills` ([#3405](https://github.com/badlogic/pi-mono/issues/3405))
 - Fixed OpenRouter request attribution to include Pi app headers (`HTTP-Referer: https://pi.dev`, `X-OpenRouter-Title: pi`, `X-OpenRouter-Categories: cli-agent`) when sessions are created through the coding-agent SDK and install telemetry is enabled ([#3414](https://github.com/badlogic/pi-mono/issues/3414))
 
diff --git a/packages/coding-agent/src/core/export-html/template.css b/packages/coding-agent/src/core/export-html/template.css
index b3a4e39b..857fa25d 100644
--- a/packages/coding-agent/src/core/export-html/template.css
+++ b/packages/coding-agent/src/core/export-html/template.css
@@ -510,6 +510,7 @@
       margin: 0;
       padding: 0;
       line-height: var(--line-height);
+      white-space: pre-wrap;
     }
 
     .tool-output pre {
diff --git a/packages/coding-agent/test/export-html-whitespace.test.ts b/packages/coding-agent/test/export-html-whitespace.test.ts
new file mode 100644
index 00000000..dc00de0d
--- /dev/null
+++ b/packages/coding-agent/test/export-html-whitespace.test.ts
@@ -0,0 +1,12 @@
+import { readFileSync } from "fs";
+import { describe, expect, it } from "vitest";
+
+describe("export HTML tool output whitespace", () => {
+	it("preserves whitespace for plain-text tool output containers", () => {
+		const css = readFileSync(new URL("../src/core/export-html/template.css", import.meta.url), "utf-8");
+
+		expect(css).toMatch(
+			/\.tool-output > div,\s*\.output-preview,\s*\.output-full\s*\{[\s\S]*?white-space:\s*pre-wrap;/,
+		);
+	});
+});