Editing a project's src/ without cargo build silently ran the previous
dylib with plausible stale numbers — the role-2 authoring-loop footgun.
The loader now compares the newest mtime under src/ + Cargo.toml against
the dylib's mtime right after the ArtifactMissing check and prints one
stderr warning naming both timestamps (hand-rolled Hinnant
civil_from_days render, no new dependency), then proceeds unchanged:
warn, never refuse — a stale run is still deterministic and
manifest-stamped. Every I/O failure in the scan degrades to
skip-and-continue; staleness can never become a refusal. Fresh builds
stay silent (inverse unit-pinned).
Verified: headline e2e green, project_load 8/8, full workspace suite
green, clippy -D warnings clean; independent quality review approved.
closes#237
Brummel
e44b0cbb3e