Bug: timeSinceStart only updated when an envelope event fired
(combatStart, attack-roll, etc.). If the combat was idle — a
player thinking about their turn, between turns — the timer froze.
Fix: 1Hz self-rescheduling setTimeout in the constructor that
bumps timeSinceStart and triggers a throttled render while
_state.isActive is true. Stopped on unwireHooks (combat end).
TDD: Section O (5 assertions) added BEFORE the fix.
- O.1 initial timeSinceStart reflects _combatStartedAt
- O.2 advances without an envelope event
- O.3 tick interval is ~1s
- O.4 timer does not tick when combat is inactive
- O.5 timer resumes when combat becomes active again
Tests: 65/65 passing in ~2s. Playwright 31/31.
Kaysser Taylor
b1121651dc