feat: complete vampire expansion chunk 2 — exploration areas

Adds vampireExplorations.ts with 72 areas across all 18 vampire zones
(4 per zone), each with descriptions, events, material drops, and
scaled durations. Also fixes a TypeScript double-cast error in
debug.ts and marks chunk 2 complete in vampire.md.

apps/api/src/routes/debug.ts

@@ -1280,8 +1280,8 @@ debugRouter.post("/grant-apotheosis", async(context) => {
       return context.json({ error: "No save found" }, 404);
     }
 
-    /* eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Prisma returns JsonValue; cast to GameState */
-    const state = record.state as GameState;
+    /* eslint-disable-next-line @typescript-eslint/consistent-type-assertions -- Prisma returns JsonValue; double-cast required */
+    const state = record.state as unknown as GameState;
 
     const updatedState: GameState
       = (state.apotheosis?.count ?? 0) >= 1