Verify native behavior creation recovery and source authoring contracts

harness/TASK_LEDGER.md

@@ -42,8 +42,11 @@ four/six-source independent model oracles; supplementary native cases remain.
 Corrected immutable desktop631/631 passed; later Sensor correction passed53/53.
 Final creation21/guide3 and matching full desktop653/653 passed after ancestry
 label correction. StrictClippy/fmt pass after one behavior-equivalent history
-let-chain rewrite; affected history63 and matching GUI build pass. Native acceptance
-is active. Mounted
+let-chain rewrite; affected history63 and matching GUI build pass. Native named
+creation passes complete model and 7/8/9-source oracles, individual Undo/Redo and
+byte-exact nine-file reopen at actual minimum size. Cancellation preserves the
+six-file baseline. Blank process/scenario canvases provide no useful first-action
+prompt; this is an observed usability finding. SA draft recovery remains active. Mounted
 layout tests establish pane geometry, not native task acceptance. Packaging checks
 and independent review are scoped to supplied binaries/fixtures, not release
 acceptance. Supported WSL2 import failed; a current Linux runtime is unavailable.
@@ -86,7 +89,14 @@ usability nor large-project performance.
 
 - Behavior creation: compact New → three task choices → focused name/owner/
   viewpoint card, explicit missing inputs, atomic creation and reserved recovery
-  IDs. Implemented and independently reviewed; final gates/native proof pending.
+  IDs. Implemented, reviewed and scoped native creation/history/reopen passed.
+- Contextual prerequisite creation: stage an explicit typed source inside the
+  current parent draft, then validate/adopt source and consumer atomically. This
+  preserves intent and one-step history; a separate Architecture excursion or
+  early source commit loses those guarantees. Initial Lifeline/process Work/
+  machine-owner adapters and semantic first-action prompts are being implemented
+  and independently challenged; acceptance remains pending. See the
+  [bounded plan](release-contextual-source-creation-plan-20260911.md).
 - Scenario workspace: compact header, optional Tools/Selection shelves, actual
   remaining-height canvas/form, pinned actions, independent scrolling and
   explicit Fit/Focus. Mounted tests support this choice; native proof pending.