A device command may carry turn_epoch: the robot's control epoch, so a device can refuse a command older than the newest turn halt (0.213.0) (#210)

ddiff --git a/CHANGELOG.md b/CHANGELOG.md
iindex 30723b1f..bcbe87d0 100644
---- a/CHANGELOG.md
++++ b/CHANGELOG.md
@@@ -32,6 +32,11 @@ the notes were in the tag and commit messages (`git tag -n1`).
    - Chat's line is now "Chat with Vibe, friends and groups": Vibe, OpenVibe's assistant, lives at openvibe.chat/vibe
      (OpenVibe.Chat#139).
    - Service ids, domains, capabilities and events are unchanged: only what people read.
++- **`turn_epoch` on a device command** (`bot.device-message@1`, additive). This was the community LOOI driver's
++  reviewers' question A2. It carries the robot's control epoch when Bot decided the command: it rises when a queue turn
++  ends, is left or is paused by an owner takeover (OpenVibe.Bot#155), and Bot's halt for that change carries the new
++  value. A device or plugin may refuse a command older than the newest halt's epoch. It is milliseconds on Bot's
++  clock, so it keeps rising across Bot restarts. Older devices ignore it (Node's decoder skips unknown fields).
  
  ## 0.212.0 — 2026-10-24
  
ddiff --git a/contracts/bot/device-message.v1.json b/contracts/bot/device-message.v1.json
iindex 92249213..21c93ffc 100644
---- a/contracts/bot/device-message.v1.json
++++ b/contracts/bot/device-message.v1.json
@@@ -204,6 +204,11 @@
              }
            }
          },
++        "turn_epoch": {
++          "type": "integer",
++          "minimum": 0,
++          "description": "The robot's control epoch when Bot decided this command (Bot#155): it rises each time a queue turn ends, is left or is paused by an owner takeover, and Bot's own halt for that change carries the new value. A device or plugin may refuse a command whose turn_epoch is lower than the newest halt's, defence in depth on top of Bot's own guarantee that nothing decided under a turn is sent after that turn's halt. Milliseconds on Bot's clock, so it keeps rising across Bot restarts. Absent from Bots before 0.213.0 and on robots without a turn queue."
++        },
          "robot_id": {
            "type": "string",
            "pattern": "^rob_[0-9A-HJKMNP-TV-Z]{26}$"
ddiff --git a/generated/json-schema/bundle.json b/generated/json-schema/bundle.json
iindex 1a60adc6..3e37a4e9 100644
---- a/generated/json-schema/bundle.json
++++ b/generated/json-schema/bundle.json
@@@ -71772,6 +71772,11 @@
                    }
                  }
                },
++              "turn_epoch": {
++                "type": "integer",
++                "minimum": 0,
++                "description": "The robot's control epoch when Bot decided this command (Bot#155): it rises each time a queue turn ends, is left or is paused by an owner takeover, and Bot's own halt for that change carries the new value. A device or plugin may refuse a command whose turn_epoch is lower than the newest halt's, defence in depth on top of Bot's own guarantee that nothing decided under a turn is sent after that turn's halt. Milliseconds on Bot's clock, so it keeps rising across Bot restarts. Absent from Bots before 0.213.0 and on robots without a turn queue."
++              },
                "robot_id": {
                  "type": "string",
                  "pattern": "^rob_[0-9A-HJKMNP-TV-Z]{26}$"
ddiff --git a/generated/typescript/index.d.ts b/generated/typescript/index.d.ts
iindex c18b3814..6b051edf 100644
---- a/generated/typescript/index.d.ts
++++ b/generated/typescript/index.d.ts
@@@ -196857,6 +196857,10 @@ export type BotDeviceMessage =
          subject?: string | null;
          role: string;
        };
++      /**
++       * The robot's control epoch when Bot decided this command (Bot#155): it rises each time a queue turn ends, is left or is paused by an owner takeover, and Bot's own halt for that change carries the new value. A device or plugin may refuse a command whose turn_epoch is lower than the newest halt's, defence in depth on top of Bot's own guarantee that nothing decided under a turn is sent after that turn's halt. Milliseconds on Bot's clock, so it keeps rising across Bot restarts. Absent from Bots before 0.213.0 and on robots without a turn queue.
++       */
++      turn_epoch?: number;
        robot_id?: string;
        /**
         * OpenVibe.Node only: the driver to send it to.