add drain-mode orchestration and docs/tasks sync for codex-opencode

templates/repo/.mosaic/orchestrator/config.json

@@ -10,8 +10,9 @@
   },
   "worker": {
     "runtime": "codex",
-    "command_template": "",
-    "timeout_seconds": 7200
+    "command_template": "bash scripts/agent/orchestrator-worker.sh {task_file}",
+    "timeout_seconds": 7200,
+    "max_attempts": 1
   },
   "quality_gates": [
     "pnpm lint",

templates/repo/.mosaic/orchestrator/tasks.json

@@ -1,16 +1,3 @@
 {
-  "tasks": [
-    {
-      "id": "EXAMPLE-001",
-      "title": "Example orchestrator task",
-      "description": "Replace this with a real task and command",
-      "status": "pending",
-      "runtime": "codex",
-      "command": "",
-      "quality_gates": [],
-      "metadata": {
-        "source": "bootstrap-template"
-      }
-    }
-  ]
+  "tasks": []
 }