Add Population Pressure Valve system to Egypt

Core mechanic: two valves (emigration vs domestic spending) with three meters:
- Domestic Pressure (high = revolution)
- Roman Displeasure (high = intervention/annexation)
- Fiscal Health (low = bankruptcy → cascade)

Player walks tightrope between all three:
- Too much emigration → Rome intervenes
- Too much spending → fiscal collapse
- Too little of both → revolution

Each faction prefers different valve settings
Win states: Economic Recovery (long, safe) or Independence First (risky, fast)
Fail state: Roman annexation (game over?)

Interaction with Italian Empire player: emigration events fire in both countries

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions