v0.3.0 — cost accountability + LLM call audit trail (#7)

Per-call recording of cost and I/O for every LLM probe. New tables prv_call_meta (schema v3) and prv_call_io. New admin pages: Costs (spend drill-down vs $5 cap) and Call Log (paginated + detail drawer). 90-day I/O retention prune via prv_daily_prune cron. P0 security: key never stored; gateway client exposes HTTP status only.

QA APPROVED 2026-06-15 SHA 09dc6db9ce

includes/core/class-prv-deactivator.php

@@ -17,6 +17,7 @@ declare(strict_types=1);
  * Dependencies: PRV_Cron.
  *
  * @see class-prv-cron.php      — Cron registration + clearing.
+ * @see class-prv-prune-cron.php — Daily prune cron clear (v0.3.0).
  * @see uninstall.php           — Full data purge on uninstall.
  * @package PrVision
  */
@@ -31,5 +32,7 @@ class PRV_Deactivator {
 	 */
 	public static function deactivate(): void {
 		PRV_Cron::clear_schedule();
+		// v0.3.0: clear the daily prune event.
+		PRV_Prune_Cron::clear_schedule();
 	}
 }