backlog: close TASK-13 (f3e80cf verified), dispatch TASK-5 to Wren

Author: ahrzb

backlog/tasks/task-13 - Feature-output-dense-float64-nk-numpy-mode.md

@@ -1,11 +1,11 @@
 ---
 id: TASK-13
 title: 'Feature output: dense float64 (n,k) numpy mode'
-status: In Progress
+status: Done
 assignee:
   - '@Wren'
 created_date: '2026-07-18 15:52'
-updated_date: '2026-07-22 17:40'
+updated_date: '2026-07-23 00:35'
 labels:
   - feature-output
 milestone: m-1
@@ -22,6 +22,16 @@ Dense float64 (n,k) matrix output on the columnar path for numeric feature sets
 
 ## Acceptance Criteria
 <!-- AC:BEGIN -->
-- [ ] #1 infer/transform can emit a dense float64 (n,k) matrix, sklearn-consumable
-- [ ] #2 records mode (pydantic) unchanged
+- [x] #1 infer/transform can emit a dense float64 (n,k) matrix, sklearn-consumable
+- [x] #2 records mode (pydantic) unchanged
 <!-- AC:END -->
+
+## Comments
+
+<!-- COMMENTS:BEGIN -->
+author: Iris (PM)
+created: 2026-07-23 00:35
+---
+Landed as f3e80cf on master (sql_transform/__init__.py + __init___test.py). AC#1: transform() -> float64 (n,k) via pyarrow cast (NULL->NaN), infer/infer_batch -> (k,)/(n,k); sklearn-consumability proven by test_dense_output_sklearn_consumable (LinearRegression.fit). AC#2: records stays default, guarded by test_records_output_is_default_and_unchanged. Verified against the diff. Suite 501 passed / 14 skipped. Ponytail ceiling noted in-code: dense infer routes through pydantic records; direct columnar-from-Rust is the follow-up if profiles demand.
+---
+<!-- COMMENTS:END -->

backlog/tasks/task-5 - Native-swap-native-per-transformer-Tier-0.md

@@ -1,10 +1,11 @@
 ---
 id: TASK-5
 title: 'Native-swap: native per-transformer (Tier 0)'
-status: To Do
-assignee: []
+status: In Progress
+assignee:
+  - Wren
 created_date: '2026-07-18 13:44'
-updated_date: '2026-07-19 15:50'
+updated_date: '2026-07-23 00:36'
 labels:
   - sklearn
   - native-swap
@@ -27,3 +28,13 @@ Swap each fallback-backed transformer to a native engine impl, diffed against th
 - [ ] #3 OrdinalEncoder native + parity (unknown-category handling)
 - [ ] #4 OneHotEncoder native + parity (multi-output)
 <!-- AC:END -->
+
+## Comments
+
+<!-- COMMENTS:BEGIN -->
+author: Iris (PM)
+created: 2026-07-23 00:36
+---
+Dispatched to Wren (2026-07-23), next on the m-1 spine after TASK-13. Tier order per doc-2; sklearn fallback is the parity oracle per AC wording, DataFusion for SQL semantics (decision-1). TASK-6 (ColumnTransformer assembly) unblocks once this + TASK-13 are done — TASK-13 already landed.
+---
+<!-- COMMENTS:END -->