Polish Week 1: tooltips, save import, game balance tuning

Add reusable Tooltip component and rich tooltips on all TopBar KPIs
(cash breakdown, compute utilization, reputation context). Add save
import button to Settings page. Fix game balance: reduce GPU maintenance
100x, increase organic API demand 200x, accelerate subscription revenue
timescale, boost early subscriber seeding, use sqrt scaling for model
compute factor, simplify deploy to activate all product lines at once.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/shared/src/constants/gameBalance.ts

@@ -10,7 +10,7 @@ export const MAX_REPUTATION_HISTORY = 500;
 
 export const STARTING_MONEY = 50_000;
 export const BASE_ENERGY_COST_PER_FLOP = 0.001;
-export const BASE_MAINTENANCE_PER_GPU = 0.5;
+export const BASE_MAINTENANCE_PER_GPU = 0.005;
 
 export const TRAINING_BASE_TICKS = 120;
 export const TRAINING_COMPUTE_MULTIPLIER = 0.8;