The DOMSnapshot walk recursed one frame per nesting level. The MAX_NODES
cap bounds the node count but not the depth, so a deeply nested linear
chain (script can build thousands of nested elements) could overflow the
stack before the count guard triggered. Rewrite it with an explicit stack
so depth lives on the heap. Pre-order traversal and the MAX_NODES cap are
preserved.
Fixes#341.
CDP DOM-agent frameworks (browser-use and similar) could connect but saw a
blank page: navigation never refreshed their cached target url/title, and their
DOM build aborted with "Unknown domain: DOMSnapshot".
- Emit Target.targetInfoChanged after navigation (both CDP Page.navigate and
JS-initiated) carrying the post-nav url/title. Strict clients refresh a target
only on this event; it also fixes Puppeteer/Playwright page.url() tracking.
- Implement DOMSnapshot.captureSnapshot, built from the DOM with synthetic
geometry (no paint engine) and plausible computed styles, keyed by the same
backendNodeId as DOM.getDocument. Enough for tag/ARIA/accessibility element
detection; it runs only when a client requests it, so the fetch path is
unaffected. Coordinate clicking still requires a real layout engine.
SGavrl