ci(CropLens): run real YOLO CPU smoke test for model-related changes

.github/workflows/real-yolo-smoke.yml

@@ -1,9 +1,15 @@
 name: Real YOLO CPU smoke test
 
-# Intentionally manual: installing CPU inference dependencies is expensive
-# and model compatibility needs deliberate review.
+# Run only when model assets, this smoke test, or its workflow change.
+# Ordinary docs and application PRs keep using the lightweight checks.
 on:
   workflow_dispatch:
+  push:
+    branches: [main]
+    paths:
+      - '.github/workflows/real-yolo-smoke.yml'
+      - 'inference/tests/smoke_real_model.py'
+      - 'inference/weights/**'
 
 permissions:
   contents: read

docs/TESTING.md

@@ -10,7 +10,7 @@
 
 ## Run the real inference smoke test
 
-After the workflow is available on `main`, from an authenticated GitHub CLI terminal:
+The workflow runs automatically on `main` when model checkpoints, its test script, or the smoke workflow are changed. It can also be triggered manually from an authenticated GitHub CLI terminal:
 
 ```powershell
 gh workflow run real-yolo-smoke.yml -R FuTseYi/CropLens
@@ -19,7 +19,7 @@ gh run list -R FuTseYi/CropLens --workflow real-yolo-smoke.yml --limit 1
 
 Alternatively, use **Actions → Real YOLO CPU smoke test → Run workflow** in the GitHub repository.
 
-The optional test installs CPU PyTorch/Ultralytics packages and may download substantial dependencies. It is intentionally not run on every PR. Read the run logs for the actual pass/fail status. A passing smoke test indicates only that **one checkpoint can load and process one repository sample**; it says nothing about inference accuracy or deployment readiness.
+The optional test installs CPU PyTorch/Ultralytics packages and may download substantial dependencies. It is intentionally not run on every PR or on ordinary documentation updates. Read the run logs for the actual pass/fail status. A passing smoke test indicates only that **one checkpoint can load and process one repository sample**; it says nothing about inference accuracy or deployment readiness.
 
 ## Before claiming production readiness