readPaperclipRuntimeSkillEntries does real fs.stat I/O under fake timers,
delaying execute()'s fake-timer registration by ~3200-4200ms of fake time
when tests run in isolation (cold OS page cache). The previous approach
tried vi.spyOn on an ESM module namespace export, which throws
"Cannot redefine property" — a fundamental ESM constraint.
Fix: remove the broken spy. Instead, each timer-heavy test now uses enough
advanceTimersByTimeAsync calls to (a) give the event loop sufficient turns
for the I/O to drain, and (b) cover the full fake-timer sequence even with
the maximum observed I/O delay. Patterns chosen:
reconnects (needs t+6000): 6 advances, ~12200ms total
deadline exceeded (needs t+3000): 5 advances, ~8400ms total
pod-creation wait (needs t+5000): 5 advances, ~9400ms total
execute.ts line coverage: 82.57% (was ~24% before this task's test additions).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Chris Farhood
a7dfd5d502