Remove autoscaling action cooldown

src/lib/server/autoscaling/schema.ts

@@ -5,7 +5,7 @@ export function ensureAutoscalingSchema(handle: Database.Database): void {
         CREATE TABLE IF NOT EXISTS autoscaling_policies (
             id TEXT PRIMARY KEY, game TEXT NOT NULL, map_slug TEXT NOT NULL,
             revision INTEGER NOT NULL DEFAULT 1, settings TEXT NOT NULL,
-            mode TEXT NOT NULL DEFAULT 'off', next_action_at INTEGER NOT NULL DEFAULT 0,
+            mode TEXT NOT NULL DEFAULT 'off',
             paused_reason TEXT, owns_map INTEGER NOT NULL DEFAULT 0, updated_at TEXT NOT NULL,
             UNIQUE(game,map_slug)
         );
@@ -34,9 +34,15 @@ export function ensureAutoscalingSchema(handle: Database.Database): void {
         );
         CREATE INDEX IF NOT EXISTS autoscaling_sample_retention ON autoscaling_samples(sampled_at);
     `);
-    // Removed modes must not silently gain permission to destroy lobbies.
-    // Keep ownership while delivered work settles through normal reconciliation.
     handle.transaction(() => {
+        const columns = handle.pragma('table_info(autoscaling_policies)') as { name: string }[];
+        if (columns.some(column => column.name === 'next_action_at')) {
+            handle.exec('ALTER TABLE autoscaling_policies DROP COLUMN next_action_at');
+        }
+        handle.exec(`UPDATE autoscaling_policies SET settings=json_remove(settings,'$.cooldownMinutes')
+            WHERE json_type(settings,'$.cooldownMinutes') IS NOT NULL`);
+        // Removed modes must not silently gain permission to destroy lobbies.
+        // Keep ownership while delivered work settles through normal reconciliation.
         handle.prepare(`UPDATE autoscaling_authorizations SET revoked_at=?
             WHERE claimed_at IS NULL AND revoked_at IS NULL AND policy_id IN
                 (SELECT id FROM autoscaling_policies WHERE mode IN ('dry-run','create-only'))`).run(Date.now());