DOM-JS bridge: document object and element access · Pull Request #279 · pierrelf.com/we

Implements issue 3mhyfmgy2qu2i — DOM-JS bridge: document object and element access (Phase 11, issue 2 of 8).

Summary #

Adds DomBridge struct holding shared Document and wrapper identity cache (NodeId -> GcRef)
Vm::attach_document(doc) registers the document global with structural properties
Document properties: documentElement, head, body, title, nodeType
Query methods: getElementById, getElementsByTagName, getElementsByClassName, querySelector, querySelectorAll
Factory methods: createElement, createTextNode
Element wrappers expose tagName, nodeName, nodeType, id, className
Wrapper identity: same DOM node always returns the same JS object (=== works)
Added NodeId::from_index() to dom crate and Parser::parse_selectors() to css crate
20 new tests covering all acceptance criteria

cargo fmt --all --check passes
cargo clippy --workspace -- -D warnings passes clean
cargo test --workspace — all 2,064 tests pass (20 new DOM bridge tests, zero regressions)