fix: real-time companion unlocks, persist exploration endsAt, correct auto-prestige formula, and quest balance

Closes #191
Closes #205
Closes #206
Closes #212
Closes #214
Closes #216
Closes #224

apps/api/src/data/quests.ts

@@ -77,7 +77,7 @@ export const defaultQuests: Array<Quest> = [
     combatPowerRequired: 500,
     description:
       "A rogue necromancer has raised an army of skeletons near the city. Silence him before the dead overrun us.",
-    durationSeconds: 5 * 60,
+    durationSeconds: 30 * 60,
     id:              "necromancer_tower",
     name:            "Necromancer's Tower",
     prerequisiteIds: [],
@@ -94,7 +94,7 @@ export const defaultQuests: Array<Quest> = [
     combatPowerRequired: 2000,
     description:
       "An ancient fortress still garrisoned by constructs who don't know the war ended. Clear it out and claim its vaults.",
-    durationSeconds: 5 * 60,
+    durationSeconds: 45 * 60,
     id:              "crumbling_fortress",
     name:            "The Crumbling Fortress",
     prerequisiteIds: [ "necromancer_tower" ],
@@ -111,7 +111,7 @@ export const defaultQuests: Array<Quest> = [
     combatPowerRequired: 8000,
     description:
       "A vast library sealed for centuries whose contents have warped and grown hostile. The knowledge within is priceless.",
-    durationSeconds: 10 * 60,
+    durationSeconds: 60 * 60,
     id:              "cursed_library",
     name:            "The Cursed Library",
     prerequisiteIds: [ "crumbling_fortress" ],
@@ -127,7 +127,7 @@ export const defaultQuests: Array<Quest> = [
     combatPowerRequired: 30_000,
     description:
       "The legendary lair of Pyraxis the Undying. Few who enter return — those who do are rich beyond imagining.",
-    durationSeconds: 15 * 60,
+    durationSeconds: 90 * 60,
     id:              "dragon_lair",
     name:            "Dragon's Lair",
     prerequisiteIds: [ "cursed_library" ],
@@ -545,7 +545,7 @@ export const defaultQuests: Array<Quest> = [
     rewards:         [
       { amount: 3_000_000_000_000, type: "gold" },
       { amount: 1_500_000_000, type: "essence" },
-      { amount: 12_000_000, type: "crystals" },
+      { amount: 0, type: "crystals" },
     ],
     status: "locked",
     zoneId: "abyssal_trench",
@@ -561,7 +561,7 @@ export const defaultQuests: Array<Quest> = [
     rewards:         [
       { amount: 10_000_000_000_000, type: "gold" },
       { amount: 5_000_000_000, type: "essence" },
-      { amount: 30_000_000, type: "crystals" },
+      { amount: 0, type: "crystals" },
     ],
     status: "locked",
     zoneId: "abyssal_trench",
@@ -577,7 +577,7 @@ export const defaultQuests: Array<Quest> = [
     rewards:         [
       { amount: 30_000_000_000_000, type: "gold" },
       { amount: 15_000_000_000, type: "essence" },
-      { amount: 60_000_000, type: "crystals" },
+      { amount: 0, type: "crystals" },
     ],
     status: "locked",
     zoneId: "abyssal_trench",
@@ -593,7 +593,7 @@ export const defaultQuests: Array<Quest> = [
     rewards:         [
       { amount: 100_000_000_000_000, type: "gold" },
       { amount: 50_000_000_000, type: "essence" },
-      { amount: 120_000_000, type: "crystals" },
+      { amount: 0, type: "crystals" },
       { targetId: "abyss_diver_1", type: "upgrade" },
     ],
     status: "locked",
@@ -610,7 +610,7 @@ export const defaultQuests: Array<Quest> = [
     rewards:         [
       { amount: 400_000_000_000_000, type: "gold" },
       { amount: 200_000_000_000, type: "essence" },
-      { amount: 400_000_000, type: "crystals" },
+      { amount: 0, type: "crystals" },
     ],
     status: "locked",
     zoneId: "abyssal_trench",

apps/api/src/routes/explore.ts

@@ -191,17 +191,17 @@ exploreRouter.post("/start", async(context) => {
     }
 
     const now = Date.now();
+    // eslint-disable-next-line stylistic/no-mixed-operators -- duration * 1000 is clear
+    const endsAt = now + explorationArea.durationSeconds * 1000;
     area.status = "in_progress";
     area.startedAt = now;
+    area.endsAt = endsAt;
 
     await prisma.gameState.update({
       /* eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Prisma requires object */
       data:  { state: state as object, updatedAt: now },
       where: { discordId },
     });
-
-    // eslint-disable-next-line stylistic/no-mixed-operators -- duration * 1000 is clear
-    const endsAt = now + explorationArea.durationSeconds * 1000;
     const response: ExploreStartResponse = {
       areaId,
       endsAt,