[staging-devin-ai-integration]

Summary

Follow-ups to #1007 (:open for <details>/<dialog>):

• ElementData::flush_open_state now sets ElementState::OPEN only for an HTML-namespace details/dialog that has a null-namespace open attribute. The set_attribute/clear_attribute hooks in the mutator likewise ignore namespaced open attrs. Before this, the check used local names only, so e.g. an SVG-namespace details, or a namespaced open attribute, would also set the state.
• blitz-vibey-script now reflects the boolean open property on details/dialog (el.open = true sets open="" through the mutator; el.open = false removes it). Other elements return undefined and ignore assignment. Without this, WPTs that toggle details.open from script could not pass.
• Tests:
  • blitz-dom: opening and closing via the mutator and via a summary click restyles a details:open > p rule, and the snapshot holds the pre-change OPEN state.
  • blitz-dom: namespace cases.
  • blitz-vibey-script: open reflection.

WPT (main 53e9d81 → this branch)

css/selectors: 415 → 417 tests passing, 2501 → 2504 subtests, no regressions.

• selectors-4/details-open-pseudo-002.html: FAIL → PASS
• selectors-4/details-open-pseudo-003.html: FAIL → PASS
• open-pseudo.html: 0/3 → 1/3 ("The details element should support :open" now passes; the remaining subtests need dialog show() and select pickers)

html/semantics/interactive-elements/the-details-element: 14 → 15 subtests passing, and no test that passed before fails now. Two tests change status only because they now get past their initial .open assertions:

• details-keyboard-activation.html: FAIL → SKIP. It now reaches test_driver.send_keys, which the runner skips because it isn't supported.
• name-attribute.html: one subtest FAIL → PASS. The test as a whole goes FAIL → TIMEOUT because it now waits for a toggle event. toggle events and exclusive name groups aren't implemented.

fmt and clippy are clean; cargo test -p blitz-dom (85 tests) and cargo test -p blitz-vibey-script pass.

Link to Devin session: https://dioxus.staging.devinenterprise.com/sessions/97e220fc0ea344feb49da2f7a9635913
Open in Devin Desktop: https://dioxus.staging.devinenterprise.com/desktop/session/97e220fc0ea344feb49da2f7a9635913?variant=devin-insiders

WPT results

Subtests: 3 newly passing, 0 newly failing (net +3).

Subtest changes by area (3 areas)

+ css             | +3 (+3 / -0) | 59.61% -> 59.61% (+0.00%) | 118801 -> 118804 / 199286
+   selectors     | +3 (+3 / -0) | 48.52% -> 48.58% (+0.06%) |   2505 ->   2508 /   5163
+     selectors-4 | +2 (+2 / -0) | 20.51% -> 25.64% (+5.13%) |      8 ->     10 /     39

Full diff (3 changed tests)

+ FAIL => FAIL  [1/3]  +1  css/selectors/open-pseudo.html
+ FAIL => PASS  [1/1]  +1  css/selectors/selectors-4/details-open-pseudo-002.html
+ FAIL => PASS  [1/1]  +1  css/selectors/selectors-4/details-open-pseudo-003.html

_{Generated by the WPT workflow.}

[staging-devin-ai-integration]

I'll fix CI failures and address comments from users with write access that start with 'Devin'.

• Disable automatic comment, CI, and merge conflict monitoring