feat(cron): bind scheduled automations to sessions

tests/cron/test_cron_tool_list.py

@@ -303,7 +303,9 @@ def test_remove_protected_dream_job_returns_clear_feedback(tmp_path) -> None:
 
 def test_add_cron_job_defaults_to_tool_timezone(tmp_path) -> None:
     tool = _make_tool_with_tz(tmp_path, "Asia/Shanghai")
-    tool.set_context(RequestContext(channel="telegram", chat_id="chat-1"))
+    tool.set_context(
+        RequestContext(channel="telegram", chat_id="chat-1", session_key="telegram:chat-1")
+    )
 
     result = tool._add_job(None, "Morning standup", None, "0 8 * * *", None, None)
 
@@ -314,7 +316,9 @@ def test_add_cron_job_defaults_to_tool_timezone(tmp_path) -> None:
 
 def test_add_at_job_uses_default_timezone_for_naive_datetime(tmp_path) -> None:
     tool = _make_tool_with_tz(tmp_path, "Asia/Shanghai")
-    tool.set_context(RequestContext(channel="telegram", chat_id="chat-1"))
+    tool.set_context(
+        RequestContext(channel="telegram", chat_id="chat-1", session_key="telegram:chat-1")
+    )
 
     result = tool._add_job(None, "Morning reminder", None, None, None, "2026-03-25T08:00:00")
 
@@ -324,26 +328,29 @@ def test_add_at_job_uses_default_timezone_for_naive_datetime(tmp_path) -> None:
     assert job.schedule.at_ms == expected
 
 
-def test_add_job_delivers_by_default(tmp_path) -> None:
+def test_add_job_binds_current_session_key(tmp_path) -> None:
     tool = _make_tool(tmp_path)
-    tool.set_context(RequestContext(channel="telegram", chat_id="chat-1"))
+    tool.set_context(
+        RequestContext(channel="telegram", chat_id="chat-1", session_key="telegram:chat-1")
+    )
 
     result = tool._add_job(None, "Morning standup", 60, None, None, None)
 
     assert result.startswith("Created job")
     job = tool._cron.list_jobs()[0]
-    assert job.payload.deliver is True
+    assert job.payload.session_key == "telegram:chat-1"
+    assert job.payload.channel is None
+    assert job.payload.to is None
 
 
-def test_add_job_can_disable_delivery(tmp_path) -> None:
+def test_add_job_requires_session_key(tmp_path) -> None:
     tool = _make_tool(tmp_path)
     tool.set_context(RequestContext(channel="telegram", chat_id="chat-1"))
 
     result = tool._add_job(None, "Background refresh", 60, None, None, None, deliver=False)
 
-    assert result.startswith("Created job")
-    job = tool._cron.list_jobs()[0]
-    assert job.payload.deliver is False
+    assert result == "Error: scheduled automations must be created from a chat session"
+    assert tool._cron.list_jobs() == []
 
 
 def test_cron_schema_advertises_action_specific_requirements(tmp_path) -> None:
@@ -375,7 +382,9 @@ def test_validate_params_requires_message_only_for_add(tmp_path) -> None:
 
 def test_add_job_empty_message_returns_actionable_error(tmp_path) -> None:
     tool = _make_tool(tmp_path)
-    tool.set_context(RequestContext(channel="telegram", chat_id="chat-1"))
+    tool.set_context(
+        RequestContext(channel="telegram", chat_id="chat-1", session_key="telegram:chat-1")
+    )
 
     result = tool._add_job(None, "", 60, None, None, None)
 
@@ -383,8 +392,8 @@ def test_add_job_empty_message_returns_actionable_error(tmp_path) -> None:
     assert "Retry including message=" in result
 
 
-def test_add_job_captures_metadata_and_session_key(tmp_path) -> None:
-    """CronTool stores channel metadata and session_key when adding a job."""
+def test_add_job_captures_only_session_key(tmp_path) -> None:
+    """CronTool stores the canonical session key without legacy delivery fields."""
     tool = _make_tool(tmp_path)
     meta = {"slack": {"thread_ts": "111.222", "channel_type": "channel"}}
     tool.set_context(RequestContext(
@@ -396,8 +405,10 @@ def test_add_job_captures_metadata_and_session_key(tmp_path) -> None:
 
     jobs = tool._cron.list_jobs()
     assert len(jobs) == 1
-    assert jobs[0].payload.channel_meta == meta
     assert jobs[0].payload.session_key == "slack:C99:111.222"
+    assert jobs[0].payload.channel is None
+    assert jobs[0].payload.to is None
+    assert jobs[0].payload.channel_meta == {}
 
 
 def test_list_excludes_disabled_jobs(tmp_path) -> None: