2.37

Browser UI restructuring, project banner

Code structure

• The browser UI's pure logic moved out of the 1,400-line app.js into small DOM-free modules that also run in Node tests: util.js, settings.js (localStorage, injectable store), filters.js (what lines are visible) and highlight.js, next to the existing formats.js. app.js keeps the DOM wiring and shrank by about 80 lines.
• The text filter now reuses its compiled regular expression instead of rebuilding it for every incoming line, which helps with busy streams.
• 19 new tests for these modules (228 in total). Behaviour was also checked in a real browser (text filter, regex, invert, level chips, colors).

Documentation

• A project banner for the README, the wiki and the repository social preview.
• Contributor docs describe the browser module layout and where new logic belongs.

No functional changes for users.