---
id: TASK-83
title: Fix tab-cache inline style extraction for canvas toolbar
status: Done
assignee: []
created_date: '2026-03-03 07:42'
labels:
  - bugfix
  - canvas
  - tab-cache
dependencies: []
references:
  - shared/tab-cache.ts
priority: high
---

## Description

<!-- SECTION:DESCRIPTION:BEGIN -->
The tab-cache system (shared/tab-cache.ts) only extracted <link rel="stylesheet"> tags when switching tabs, missing inline <style> blocks. The canvas toolbar CSS is entirely in inline <style> blocks in canvas.html, causing unstyled toolbar when switching to rSpace via tab cache.

Fixed extractContent() to also collect inline <style> blocks from fetched page heads, and loadAssets() to inject them with data-tab-style attributes for deduplication.
<!-- SECTION:DESCRIPTION:END -->

## Final Summary

<!-- SECTION:FINAL_SUMMARY:BEGIN -->
Added inline <style> block extraction to tab-cache's extractContent() and injection in loadAssets(). Toolbar now renders correctly when switching to rSpace tab via client-side navigation. Committed as 4819852.
<!-- SECTION:FINAL_SUMMARY:END -->
