refactor: isolate agent task execution data boundary (#6433)

tests/fixtures/architecture/dependency-baseline.json

@@ -13,8 +13,8 @@
     "runtime_to_db": [],
     "workflow_to_db": []
   },
-  "edge_count": 6554,
-  "edge_sha256": "1c72744be67d95f98eac1c7b1a72bdbf7b6d1d4f337556b8e22293c3a9525c67",
+  "edge_count": 6560,
+  "edge_sha256": "bdd34affb7c42a4cbcdc85e713d9b4ac591c3343559dd5032b4518e77eba721e",
   "edges": [
     "app -> app.runtime",
     "app -> app.runtime.compat",
@@ -356,6 +356,7 @@
     "app.agent.orchestrator -> app.agent.tools.impl.query_system_settings",
     "app.agent.orchestrator -> app.application",
     "app.agent.orchestrator -> app.application.agentdata",
+    "app.agent.orchestrator -> app.application.agenttask",
     "app.agent.orchestrator -> app.application.messaging",
     "app.agent.orchestrator -> app.application.messaging.chat",
     "app.agent.orchestrator -> app.application.plugin",
@@ -2483,6 +2484,12 @@
     "app.api.servcookie -> app.runtime.log",
     "app.api.servcookie -> app.schemas",
     "app.api.servcookie -> app.schemas.servcookie",
+    "app.application.agenttask -> app.application",
+    "app.application.agenttask -> app.application.database",
+    "app.application.agenttask -> app.runtime",
+    "app.application.agenttask -> app.runtime.execution",
+    "app.application.agenttask -> app.schemas",
+    "app.application.agenttask -> app.schemas.exception",
     "app.application.audio -> app.domain",
     "app.application.audio -> app.domain.context",
     "app.application.audio -> app.domain.meta",
@@ -5809,6 +5816,7 @@
     "app.scheduler -> app.adapters.external.server",
     "app.scheduler -> app.application",
     "app.scheduler -> app.application.agent",
+    "app.scheduler -> app.application.agentdata",
     "app.scheduler -> app.application.configuration",
     "app.scheduler -> app.application.database",
     "app.scheduler -> app.application.image",
@@ -5827,9 +5835,6 @@
     "app.scheduler -> app.chain.subscribe",
     "app.scheduler -> app.chain.transfer",
     "app.scheduler -> app.chain.workflow",
-    "app.scheduler -> app.db",
-    "app.scheduler -> app.db.oper",
-    "app.scheduler -> app.db.oper.agenttask",
     "app.scheduler -> app.foundation",
     "app.scheduler -> app.foundation.singleton",
     "app.scheduler -> app.runtime",
@@ -6187,6 +6192,7 @@
     "app.startup.initializers.modules -> app.api.data",
     "app.startup.initializers.modules -> app.application",
     "app.startup.initializers.modules -> app.application.agentdata",
+    "app.startup.initializers.modules -> app.application.agenttask",
     "app.startup.initializers.modules -> app.application.chain",
     "app.startup.initializers.modules -> app.application.chain.context",
     "app.startup.initializers.modules -> app.application.chain.data",
@@ -6571,7 +6577,7 @@
     "app.workflow.actions.transfer_file -> app.workflow",
     "app.workflow.actions.transfer_file -> app.workflow.actions"
   ],
-  "module_count": 809,
+  "module_count": 810,
   "modules": [
     "app",
     "app.adapters",
@@ -6820,6 +6826,7 @@
     "app.application",
     "app.application.agent",
     "app.application.agentdata",
+    "app.application.agenttask",
     "app.application.audio",
     "app.application.backup",
     "app.application.chain",