EthanHealy01 9d473fb435 Resolve duplicate CSS selectors reported by Stylelint (#7212) ...

Fixes #7189

Consolidates all 29 `no-duplicate-selectors` violations across 18
stylesheets by merging later duplicate rule blocks into the first
occurrence. Where duplicates had conflicting values, the cascade-winning
(later) value was kept, so computed styles are unchanged.

Also:
- Adds `frontend/stylelint.config.mjs` with only
`no-duplicate-selectors` enabled (Prettier and the theme linter own
everything else).
- Adds a `frontend:lint:css` task, wired into `task frontend:lint` as a
blocking check so regressions can't creep back in.
- Lints all first-party CSS (`editor/**/*.css`, so `public/css` and any
future non-`src` stylesheets are covered too), excluding only the
vendored `cookieconsent.css` and build output via `ignoreFiles`. This
surfaced and fixed 5 additional duplicate selectors in
`cookieconsentCustomisation.css` that weren't in the original issue
report.

Note: `portal/views/Sources.css` goes beyond dedup — the whole
`.portal-sources__connections*` block is deleted as dead code
(unreferenced since the S3 connections redesign in #6965; only
`-actions` in it was an actual duplicate).

🤖 Generated with [Claude Code](https://claude.ai/code)

2026-07-31 16:46:31 +00:00

..

cookieconsent.css

Restructure/frontend editor (#6404)

2026-05-22 13:40:34 +01:00

cookieconsentCustomisation.css

Resolve duplicate CSS selectors reported by Stylelint (#7212)

2026-07-31 16:46:31 +00:00