* feat(ltl): attribute violations to the obligation origin step
* feat(verifier): label evaluator observations with the runner step index
* feat(trace): carry the causing step in violation witnesses and summary
* feat(replay): move the violation marker to the causing step
* feat(replay-ui): render witness evidence in the violations panel
* feat(replay-ui): wire witnesses and step jump into violation panels
* fix(ltl): treat next obligations as vacuous at run end
* fix(runner): give the finalize trace record its own step index
* refactor: rename inspect to replay across the codebase
Renames inspect-ui/ to replay-ui/, internal/inspect/ to internal/replay/,
the CLI subcommand from `sanderling inspect` to `sanderling replay`, and
updates all references in docs, Makefile, README, and Go comments.
* feat(replay-ui): show spec filename with full path on hover
RunList and RunDetail now render the basename of spec_path (e.g.
login.spec.ts) with the full path available as a title tooltip.
pj