[sebastienfontaine]

Fixes #566.

Problem

On GitHub, a rule like GitHub - {title} is applied for a moment, then the title goes back to GitHub's own.

GitHub replaces the whole <title> element after load. applyTitleRule attached its MutationObserver to the <title> element found at load time. Once GitHub swapped it, the observer was watching a detached node, so the new title was never processed.

Reproduced on master with Playwright on #557: the rule never applied over 8 seconds, and 2 distinct <title> elements were seen.

Fix

Observe document.head (child list, character data, subtree) instead of the <title> element, as the favicon observer already does. The callback is unchanged: it only acts when document.title actually changed, so our own write doesn't loop. Still far fewer callbacks than observing the whole document.

Tests

• New RuleApplicationService.test.ts (real jsdom DOM): title applied on load, reapplied when the text changes, reapplied when the <title> element is replaced (fails without the fix), and no extra pass triggered by our own write.
• Same Playwright check after the fix: the title becomes GitHub - … within 500 ms and stays.
• 232 tests, ESLint, Prettier and vue-tsc pass.

[github-actions]

📦 Extension Build Ready!

Version: 1.1.6

📥 Download Extension (tabee.zip)

Installation

1. Download and extract the zip file
2. Open Chrome → chrome://extensions/
3. Enable "Developer mode" (top right)
4. Click "Load unpacked" → Select the extracted folder

Status

• ✅ All tests passed
• ✅ Build successful
• ✅ Ready for testing

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[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	56.58%	627 / 1108
🔵	Statements	56.94%	660 / 1159
🔵	Functions	63.31%	126 / 199
🔵	Branches	51.58%	310 / 601

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/content/RuleApplicationService.ts	47.82%	38.77%	44.44%	49.25%	27, 31, 35, 45, 49, 54, 59-61, 91-92, 98, 124-173

Generated in workflow #474 for commit faec02c by the Vitest Coverage Report Action