diff --git a/README.md b/README.md
index 247c50c..a2465fd 100644
--- a/README.md
+++ b/README.md
@@ -511,7 +511,7 @@ PostgreSQL data lives in bind-mount directories on the host:
 | `./data/postgres` | Game DB (`star_wars_grid`) |
 | `./data/postgres_users` | Users DB (`star_wars_users`) |
 
-A **world wipe** only cleans epoch-scoped tables when the UTC period slot changes; it does not touch the host data directories. User accounts, `user_action_quota`, `team_action_quota`, `victory_points`, and `db_metadata` survive all wipes.
+A **world wipe** only cleans epoch-scoped tables when the UTC period slot changes; it does not touch the host data directories. Only user accounts (`users`), `victory_points`, and `db_metadata` survive all wipes. Both `user_action_quota` and `team_action_quota` are truncated and reset to config defaults on wipe.
 
 To fully reset the game state (including all user accounts), stop the stack and delete both data directories, then start again:
 
diff --git a/server/db/gameDb.js b/server/db/gameDb.js
index 8b28ca4..66ea245 100644
--- a/server/db/gameDb.js
+++ b/server/db/gameDb.js
@@ -1,7 +1,7 @@
 import { pool } from "./pools.js";
 import { loadConfigFile, getConfig } from "../configLoader.js";
 import { computeWorldSeedState } from "../worldSeed.js";
-import { nextResetUtc, resetAllUserActions, getUsersByIds } from "./usersDb.js";
+import { nextResetUtc, truncateUserActionQuota, getUsersByIds } from "./usersDb.js";
 
 let lastSeedSlot = null;
 
@@ -94,18 +94,8 @@ export async function initGameSchema() {
   `);
   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;
-    ALTER TABLE grid_cells ALTER COLUMN discovered_by SET DEFAULT 'blue';
-    DO $$
-    BEGIN
-      IF NOT EXISTS (
-        SELECT 1 FROM pg_constraint WHERE conname = 'grid_cells_discovered_by_check'
-      ) THEN
-        ALTER TABLE grid_cells ADD CONSTRAINT grid_cells_discovered_by_check
-          CHECK (discovered_by IN ('blue', 'red'));
-      END IF;
-    END $$;
-    ALTER TABLE grid_cells ALTER COLUMN discovered_by SET NOT NULL;
+    ALTER TABLE grid_cells ALTER COLUMN discovered_by DROP NOT NULL;
+    ALTER TABLE grid_cells ALTER COLUMN discovered_by SET DEFAULT NULL;
   `);
   await pool.query(`
     CREATE TABLE IF NOT EXISTS team_action_quota (
@@ -189,14 +179,12 @@ export async function ensureSeedEpoch() {
     const cfg = getConfig();
     const nextNoon = nextResetUtc(cfg.actionsResetIntervalHours ?? 12).toISOString();
     await pool.query(
-      `INSERT INTO team_action_quota (team, actions_remaining, quota_reset_at)
-       VALUES ('blue', $1, $2), ('red', $1, $2)
-       ON CONFLICT (team) DO UPDATE
-         SET actions_remaining = $1,
-             quota_reset_at    = $2`,
+      `TRUNCATE team_action_quota;
+       INSERT INTO team_action_quota (team, actions_remaining, quota_reset_at)
+       VALUES ('blue', $1, $2), ('red', $1, $2)`,
       [cfg.teamActionQuota, nextNoon]
     );
-    await resetAllUserActions(cfg.dailyActionQuota, nextNoon);
+    await truncateUserActionQuota();
     console.log(`[world] Slot ${lastSeedSlot} → ${seedSlot}; grid wiped, old cooldowns cleared.`);
     lastSeedSlot = seedSlot;
   }
diff --git a/server/db/usersDb.js b/server/db/usersDb.js
index f26d0a2..a11c7d8 100644
--- a/server/db/usersDb.js
+++ b/server/db/usersDb.js
@@ -151,4 +151,9 @@ export async function resetAllUserActions(actionsRemaining, quotaResetAt) {
            quota_reset_at    = $2`,
     [actionsRemaining, quotaResetAt]
   );
+}
+
+/** Removes all rows from user_action_quota (used on world-seed wipeout). */
+export async function truncateUserActionQuota() {
+  await usersPool.query(`TRUNCATE user_action_quota`);
 }
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