feat: add real PDF ingestion workflow

services/api/tests/test_plan_ingestion.py

@@ -0,0 +1,19 @@
+from pathlib import Path
+
+from app.services.plan_ingestion import inspect_pdf
+
+
+def test_sample_pdf_detects_two_plan_regions() -> None:
+    workspace = Path(__file__).resolve().parents[3]
+    sample = workspace / "11-2-104-模型.pdf"
+
+    result = inspect_pdf(sample.read_bytes())
+
+    assert result.page_count == 1
+    assert result.vector_based is True
+    assert result.vector_element_count > 10_000
+    assert result.preview_width == 1600
+    assert len(result.regions) == 2
+    assert result.regions[0].name.startswith("上方")
+    assert result.regions[0].recommended is True
+    assert result.regions[1].name.startswith("下方")