diff --git a/.gitignore b/.gitignore
index 36aedab..e5ff2c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -26,19 +26,21 @@ output/
 *.tmp.*
 *.log
 
-# Media & large model binaries
+# Media (videos/images stay local)
 *.mp4
 *.avi
 *.mkv
 *.jpg
 *.jpeg
 *.png
-*.engine
-*.onnx
-*.pt
 *.zip
 *.tar.gz
 
+# TensorRT engines are Jetson build artifacts — rebuild via:
+#   python export_model.py models/<name>.pt
+# .pt (PyTorch) and .onnx ARE tracked so `git clone` is self-sufficient.
+*.engine
+
 # Test & coverage artifacts
 .pytest_cache/
 .coverage
diff --git a/AGENTS.md b/AGENTS.md
index 47620a4..4cd97ac 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -34,7 +34,8 @@ Indonesian (`karung`=sack, `truk`=truck); YOLO class names are English
   tracker keeps `("sack", "truck", "box")` (`src/tracking.py`); counting uses
   `MultiClassLineCounter` = dual `LineCrossCounter`s on one shared line
   (`src/counting.py`). Same line geometry + 30px dedup for sacks and boxes.
-- All weights live in `models/` (untracked; per-mode detector/filter matrix in
+- All weights live in `models/` (`.pt`/`.onnx` tracked; `.engine` gitignored —
+  rebuild via `export_model.py`; per-mode detector/filter matrix in
   `models/README.md`). Verified classes: `truck-detector`={truck},
   `model_karung_truk`/`v4-best`={sack,truck}, `karung-dimuat-*-seg-200e`=
   {person,sack} (seg; persons drawn, never counted), `best`={sack},
@@ -49,9 +50,9 @@ Indonesian (`karung`=sack, `truk`=truck); YOLO class names are English
   Deps: `requirements.txt` (unpinned; **never** pip-install torch from PyPI on the
   Jetson — use the NVIDIA wheels already on device). For visual checks run on a video
   file (`--source`), not the live RTSP.
-- **Don't commit binaries/state**: `.gitignore` excludes `*.pt/*.onnx/*.engine`,
-  `*.mp4/*.jpg/*.png`, `*.db`, `.env`, `batch_history_folder/`. Large weights and
-  videos already sit untracked in the working tree — leave them alone.
+- **Don't commit state**: `.gitignore` excludes `*.engine` (rebuildable),
+  `*.mp4/*.jpg/*.png`, `*.db`, `.env`, `batch_history_folder/`. Videos and local
+  DBs already sit untracked in the working tree — leave them alone.
 
 ## Deploy (Jetson `192.168.192.96`, user `jetson`)
 
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