fix: smooth adventurer cost curve

- militia: GPS 0.5 → 0.7 to match 10x cost jump
- Tiers 11-14: costs raised to even ~4.7x spread through tier 15
- Closes #145

apps/api/src/data/adventurers.ts

@@ -26,7 +26,7 @@ export const defaultAdventurers: Array<Adventurer> = [
     combatPower:      3,
     count:            0,
     essencePerSecond: 0,
-    goldPerSecond:    0.5,
+    goldPerSecond:    0.7,
     id:               "militia",
     level:            2,
     name:             "Militia",
@@ -129,7 +129,7 @@ export const defaultAdventurers: Array<Adventurer> = [
     unlocked:         false,
   },
   {
-    baseCost:         2_600_000_000,
+    baseCost:         2_850_000_000,
     class:            "mage",
     combatPower:      13_000,
     count:            0,
@@ -141,7 +141,7 @@ export const defaultAdventurers: Array<Adventurer> = [
     unlocked:         false,
   },
   {
-    baseCost:         11_000_000_000,
+    baseCost:         13_500_000_000,
     class:            "rogue",
     combatPower:      28_000,
     count:            0,
@@ -153,7 +153,7 @@ export const defaultAdventurers: Array<Adventurer> = [
     unlocked:         false,
   },
   {
-    baseCost:         47_000_000_000,
+    baseCost:         64_000_000_000,
     class:            "paladin",
     combatPower:      60_000,
     count:            0,
@@ -165,7 +165,7 @@ export const defaultAdventurers: Array<Adventurer> = [
     unlocked:         false,
   },
   {
-    baseCost:         200_000_000_000,
+    baseCost:         300_000_000_000,
     class:            "rogue",
     combatPower:      130_000,
     count:            0,