refacto: Replaced useless DB queries by websocket calls + patching WS auth-token leak

server/econTick.js

@@ -6,8 +6,11 @@ import {
   setElementBonus,
 } from "./db/gameDb.js";
 import { computeTeamIncome, computeTeamElementBonus } from "./helpers/economy.js";
+import { buildRealtimeSnapshot } from "./realtimeSnapshot.js";
+import { broadcast } from "./ws/hub.js";
 
 const TICK_SECONDS = 5;
+let lastTickSeed = null;
 
 /**
  * Starts the server-side economy tick loop.
@@ -19,6 +22,11 @@ export function startEconTick() {
   setInterval(async () => {
     try {
       const worldSeed = await ensureSeedEpoch();
+      if (lastTickSeed && lastTickSeed !== worldSeed) {
+        broadcast("seed-changed", { worldSeed });
+      }
+      lastTickSeed = worldSeed;
+
       const rows = await getGridCells(worldSeed);
       const cfg = getConfig();
 
@@ -41,6 +49,9 @@ export function startEconTick() {
 
       await setElementBonus(worldSeed, "blue", blueBonus);
       await setElementBonus(worldSeed, "red",  redBonus);
+
+      const snapshot = await buildRealtimeSnapshot(worldSeed);
+      broadcast("snapshot", snapshot);
     } catch (e) {
       console.error("[econ tick]", e.message);
     }