Problem

Excessive IPC calls during boot and redundant re-renders cause the app to become unresponsive.

Closes #1348

Changes

1. Add opt-in IPC timing middleware to log call durations during first 15s of boot
2. Fix markAsViewed re-firing on every render by stabilizing the dependency to a string key instead of a new array reference
3. Dedupe recordActivity mutation calls per task run using a module-level Set

How did you test this?

Manually