upstream-sync.md

Upstream sync

UI Profiler decorates Symfony's Web ProfilerBundle — it does not fork profiler data collection.

What we track

Upstream	Role
symfony/web-profiler-bundle	Collector data, routes (/_wdt, /_profiler), toolbar token semantics
symfony/twig-bundle	Twig panel and template override hooks
Stock bundle collector templates	Reskinned under templates/chrome/{BundleName}/

What we own

Area	Location
Toolbar + profiler shell chrome	assets/scss/shell/, assets/scss/wdt/
Template overrides	templates/chrome/
UI Kernel collector	src/DataCollector/UiKernelDataCollector.php
Settings dialog + shell JS	assets/js/shell.js, Stimulus controllers

After upgrading Symfony

1. Bump symfony/web-profiler-bundle in your project
2. Run Verification WDT smoke checks
3. If a stock collector panel looks unstyled, check whether upstream changed collector Twig — open an issue with Symfony version and panel name

See also

• Third-party collectors
• CHANGELOG