chore: drop dead context compat, retire plan boxes, fix spec wording

tests/core/test_scheduler.py

@@ -7,7 +7,7 @@ from wf_core.models.schemas import SchemaRef, StateSchema
 from wf_core.models.workflow import Workflow
 from wf_core.run_state import ExecutionFrame, FrameStatus, RunState, RunStatus
 from wf_core.runtime.ops.flow import advance_frame
-from wf_core.runtime.ops.frames import frame_context_values
+from wf_core.runtime.ops.frames import frame_context_view
 from wf_core.runtime.ops.runs import create_run_state
 from wf_core.runtime.scheduler import (
     add_frame,
@@ -232,19 +232,22 @@ def test_deadlock_error_includes_ready_queue_and_frame_summary() -> None:
     assert "parent:blocked@foreach" in message
 
 
-def test_frame_context_values_exposes_configured_foreach_alias() -> None:
-    context = frame_context_values(
-        ExecutionFrame(
-            id="child",
-            kind="foreach_iteration",
-            node_id="body",
-            metadata={
-                "loop_item": {"id": "a"},
-                "loop_index": 2,
-                "loop_alias": "record",
-            },
-        )
+def test_frame_context_view_exposes_configured_foreach_alias() -> None:
+    run = _run()
+    frame = ExecutionFrame(
+        id="child",
+        kind="foreach_iteration",
+        node_id="body",
+        metadata={
+            "foreach_node_id": "each",
+            "activation_id": "act-1",
+            "loop_item": {"id": "a"},
+            "loop_index": 2,
+            "loop_alias": "record",
+        },
     )
+    run.frames[frame.id] = frame
+    context = frame_context_view(run, frame).graph
 
     assert context["loop_item"] == {"id": "a"}
     assert context["loop_index"] == 2