fix: gross-based batch discard, direction-correct event logs, wire CSV logger

CHANGELOG.md

@@ -10,7 +10,7 @@ version tags are cut in this repo — POC stage, `main` is the release line).
 - **DO-gated manual batch mode** (`auto` default · `do_manual` · legacy `manual`):
   smartphone photo capture → OCR draft → plate-grouped start gates → net
   expected/counted on live panel → stop soft-warn + force → discard only when
-  **both** `net_sack` and `net_box` are 0.
+  **both** gross `count` and `box_loading` are 0.
 - `config.yaml` `batch.default_mode` + `do:` block; `DoConfig` in
   `src/config_loader.py`; runtime `$OUTPUT_DIR/do_settings.json`.
 - `delivery_orders` table + additive `batches` columns (`plate`, `do_numbers`,
@@ -40,6 +40,12 @@ version tags are cut in this repo — POC stage, `main` is the release line).
   and persists sack `unloading` for net-at-stop.
 - Finalize discard rule (dashboard stop **and** `predict.py` `finalize_batch`):
   keep row if **either** net ≠ 0 (box-only batches no longer dropped).
+- Batch discard rule now gross-based: drop only when `count == 0` **and**
+  `box_loading == 0` (was both nets 0 — kept rows like `count=0, unloading=7`).
+- Event log wording: `masuk`/`keluar` now match event direction (unloading no
+  longer logged as `masuk`, `TOTAL` line follows direction); wired the
+  existing-but-unused `src/logger.py` `CSVLogger` into `predict.py`
+  (`batch_summary.csv`, `sack_events.csv` under `output.dir`).
 
 ## 2026-09-18 — Config tuning: Sack confidence and batch timeout