From dc5a0b582d8c4cd2c01772716238b601b7249628 Mon Sep 17 00:00:00 2001
From: Aliou Diallo <code@aliou.me>
Date: Thu, 5 Feb 2026 02:10:05 +0100
Subject: [PATCH] fix(coding-agent): preserve indentation in ANSI-rendered HTML
 export

HTML div elements collapse whitespace by default, stripping leading
spaces from ANSI-rendered tool output (e.g. JSON code blocks).
Added white-space: pre-wrap to .ansi-line class.
---
 packages/coding-agent/CHANGELOG.md                      | 4 ++++
 packages/coding-agent/src/core/export-html/template.css | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 46805a0e..e4682cce 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -7,6 +7,10 @@
 - API keys in `auth.json` now support shell command resolution (`!command`) and environment variable lookup, matching the behavior in `models.json`
 - Added `minimal-mode.ts` example extension demonstrating how to override built-in tool rendering for a minimal display mode
 
+### Fixed
+
+- Fixed HTML export losing indentation in ANSI-rendered tool output (e.g. JSON code blocks in custom tool results)
+
 ## [0.51.6] - 2026-02-04
 
 ### New Features
diff --git a/packages/coding-agent/src/core/export-html/template.css b/packages/coding-agent/src/core/export-html/template.css
index d64cc068..bbf8e326 100644
--- a/packages/coding-agent/src/core/export-html/template.css
+++ b/packages/coding-agent/src/core/export-html/template.css
@@ -503,6 +503,10 @@
       display: block;
     }
 
+    .ansi-line {
+      white-space: pre-wrap;
+    }
+
     .tool-images {
     }