revert(ack): restore three-role collaboration scope

This reverts commit a0f1c15b85.

skills/ack/templates/tasks.template.yaml

@@ -39,15 +39,11 @@ project:
           strong: ["gpt-5.6-sol"]
         test:
           standard: ["gpt-5.6-luna"]
-        operator:
-          standard: ["gpt-5.6-luna"]
       cursor-agent:
         developer:
           standard: ["auto"]
         test:
           standard: ["auto"]
-        operator:
-          standard: ["auto"]
     profiles:
       codex-dev-standard:
         role: "developer"
@@ -63,13 +59,6 @@ project:
         model: "gpt-5.6-luna"
         reasoningEffort: "low"
         permissionMode: "workspace-write"
-      codex-operator-standard:
-        role: "operator"
-        cli: "codex"
-        tier: "standard"
-        model: "gpt-5.6-luna"
-        reasoningEffort: "low"
-        permissionMode: "workspace-write"
       codex-dev-strong:
         role: "developer"
         cli: "codex"
@@ -91,17 +80,9 @@ project:
         model: "auto"
         reasoningEffort: null
         permissionMode: "workspace-write"
-      cursor-operator-standard:
-        role: "operator"
-        cli: "cursor-agent"
-        tier: "standard"
-        model: "auto"
-        reasoningEffort: null
-        permissionMode: "workspace-write"
     defaults:
       developer: "codex-dev-standard"
       test: "codex-test-standard"
-      operator: "codex-operator-standard"
       developerUpgraded: "codex-dev-strong"
 
 workerReceipts: []