* feat: implement act apply-model and report baseline tripwire (#607)
* feat: implement act apply-model and report baseline tripwire (#607)
* fix(act): scope model-default tripwire to the applied project
Review fixes for #616:
- modelDefaultRow and the under-20-edit-turns gate now aggregate only the
target project's sessions (derived from changes[0].path, separators
normalized before dirname), matching the per-project baseline captured at
apply time instead of comparing against all projects.
- baseline.candidateModel labels the candidate explicitly, with a
backward-compatible fallback to metrics key order for existing journals.
- measured model-default rows render a correlation marker instead of a
formatTokens(0) token claim.
- zero-matching-projects now reports an honest project-not-found note; clean
rows route through confidenceFor like every other kind.
- tests: tripwire fires on a same-project regression that global aggregation
would mask (fails on pre-fix code), clean and not-measurable cases,
Windows-separator journal paths with an excluded masking project.
