feat(pipeline): runner + opt-in integration test on real forest base (content pipeline §3)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_pipeline_integration.py

@@ -0,0 +1,25 @@
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+
+from tools.pipeline.run import process_clip
+
+_HAS_FF = shutil.which("ffmpeg") is not None and shutil.which("ffprobe") is not None
+_FOREST = Path("simulator/sample_media/forest/base.mp4")
+
+
+@pytest.mark.skipif(not _HAS_FF, reason="ffmpeg/ffprobe not installed")
+@pytest.mark.skipif(not _FOREST.exists(),
+                    reason="forest POC base absent (run simulator/setup_sample_media.py)")
+def test_process_clip_emits_proxy_and_master(tmp_path):
+    out = process_clip(_FOREST, tmp_path, overlap=0.5, start=0.0, duration=4.0)
+    assert out["proxy"].exists() and out["master"].exists()
+    # Proxy is exactly 1920x1080.
+    probe = subprocess.run(
+        ["ffprobe", "-v", "quiet", "-select_streams", "v:0",
+         "-show_entries", "stream=width,height", "-of", "csv=p=0", str(out["proxy"])],
+        capture_output=True, text=True, check=True,
+    ).stdout.strip()
+    assert probe == "1920,1080"