feat: Adding economic system to do scoring

server/db/gameDb.js

@@ -29,6 +29,14 @@ export async function initGameSchema() {
       PRIMARY KEY (world_seed, team)
     );
   `);
+  await pool.query(`
+    CREATE TABLE IF NOT EXISTS team_econ_scores (
+      world_seed TEXT NOT NULL,
+      team TEXT NOT NULL CHECK (team IN ('blue', 'red')),
+      score DOUBLE PRECISION NOT NULL DEFAULT 0,
+      PRIMARY KEY (world_seed, team)
+    );
+  `);
   await pool.query(`
     ALTER TABLE grid_cells ADD COLUMN IF NOT EXISTS discovered_by TEXT;
     UPDATE grid_cells SET discovered_by = 'blue' WHERE discovered_by IS NULL;
@@ -59,6 +67,7 @@ export async function ensureSeedEpoch() {
   if (seedSlot !== lastSeedSlot) {
     await pool.query("TRUNCATE grid_cells RESTART IDENTITY");
     await pool.query("DELETE FROM team_cooldowns WHERE world_seed != $1", [worldSeed]);
+    await pool.query("DELETE FROM team_econ_scores WHERE world_seed != $1", [worldSeed]);
     console.log(`[world] Slot ${lastSeedSlot} → ${seedSlot}; grid wiped, old cooldowns cleared.`);
     lastSeedSlot = seedSlot;
   }
@@ -115,6 +124,29 @@ export async function upsertTeamCooldown(worldSeed, team) {
   );
 }
 
+// ── Economic scores ───────────────────────────────────────────────────────────
+
+export async function getEconScores(worldSeed) {
+  const { rows } = await pool.query(
+    `SELECT team, score FROM team_econ_scores WHERE world_seed = $1`,
+    [worldSeed]
+  );
+  const result = { blue: 0, red: 0 };
+  for (const row of rows) result[row.team] = Number(row.score);
+  return result;
+}
+
+export async function addEconScore(worldSeed, team, delta) {
+  if (delta <= 0) return;
+  await pool.query(
+    `INSERT INTO team_econ_scores (world_seed, team, score)
+     VALUES ($1, $2, $3)
+     ON CONFLICT (world_seed, team) DO UPDATE
+       SET score = team_econ_scores.score + EXCLUDED.score`,
+    [worldSeed, team, delta]
+  );
+}
+
 // ── Scores ────────────────────────────────────────────────────────────────────
 
 export async function getScores(worldSeed) {