Read screenshot identity from the selected frame-tree root instead of a
filtered inventory that could substitute a child. Reuse the frame record
parser for initial and event identities, rejecting malformed roots before
capture while preserving known origin refusals.
Share explicit origin-scope diagnostics across CDP workflows without
changing policy or conflating startup uncertainty, document replacement,
worker protection, and Inspector restrictions. Document the recovery and
make screenshot navigation fixture ordering explicit.
Validation: 577 focused checks passed across 13 files; one platform-specific
invalid-byte-filename case skipped. Build, typecheck, lint, formatting,
generated documentation checks, README conformance, and discovery passed.
No full suite or live browser/provider execution.
Own CDP frame applicability and identity at the parsed event boundary. Preserve malformed or incomplete main-frame facts, recognize replacement roots, and carry the same document identity through captures, screenshots, timelines, and execution windows.
Validation: full check:ci and docs:check; 763 browser and dispatch tests passed, 6 skipped. Independent source and fixture-lifecycle review passed. Local real-Chrome behavior was not exercised.
Closes#5665
morluto