The probe principal may manage Games mods (games.mod.manage on openvibe.games) for the production mod lifecycle proof (roadmap WS-M task 6; Games apps/server/scripts/modLifecycleProof.ts installs, grants, uses and revokes a proof mod through Games' staff API). npm test passes.

ddiff --git a/server/identity/principals.js b/server/identity/principals.js
iindex c3cb21cc..7282c15d 100644
---- a/server/identity/principals.js
++++ b/server/identity/principals.js
@@@ -143,6 +143,9 @@ const DEFAULT_GRANTS = [
      ['probe', 'tools.job.create', 'openvibe.tools', []],
      ['probe', 'tools.job.read', 'openvibe.tools', []],
      ['probe', 'events.event.read', 'openvibe.events', []],
++    // The production mod lifecycle proof (WS-M task 6, Games apps/server/scripts/modLifecycleProof.ts): install, grant,
++    // use and revoke a proof mod through Games' staff API.
++    ['probe', 'games.mod.manage', 'openvibe.games', []],
      // Wave 20: the Codes portal relays its release events.
      ['codes', 'events.event.publish', 'openvibe.events', []],
      ['ai', 'events.event.publish', 'openvibe.events', []],          // ai.run.* (AI server/events.js, 2026-09-24)