feat: add pcf analysis web app and api

tests/test_pcf_parser.py

@@ -0,0 +1,45 @@
+from pathlib import Path
+
+from app.config import AppConfig
+from app.pcf_parser import PcfParser, parse_blocks
+
+
+def test_sample_pcf_weld_count():
+    config = AppConfig.load()
+    parser = PcfParser(config)
+    files = list(Path("PCF文件样本(1)").glob("*.pcf"))
+    records, candidates, messages = parser.parse_files(files)
+
+    assert len(files) == 20
+    assert len(records) == 169
+    assert not messages
+    assert records[0].line_no
+    assert records[0].pipeline_reference
+    assert records[0].weld_area in {"安装", "预制"}
+
+
+def test_parse_nonstandard_field_candidate():
+    text = """
+PIPELINE-REFERENCE   L-001
+    PIPING-SPEC   C10C
+WELD
+    COMPONENT-IDENTIFIER    1
+    LINE-NO    01ABC
+    WELD-DIA   150
+    WELD-ATTRIBUTE3    Shop weld
+""".strip()
+    blocks = parse_blocks(text)
+    assert blocks[0].block_type == "PIPELINE-REFERENCE"
+    assert blocks[1].block_type == "WELD"
+
+    tmp = Path("tests/_tmp_nonstandard.pcf")
+    tmp.write_text(text, encoding="utf-8")
+    try:
+        config = AppConfig.load()
+        parser = PcfParser(config)
+        _records, candidates, _messages = parser.parse_files([tmp])
+        fields = {c.source_field for c in candidates}
+        assert "LINE-NO" in fields
+        assert "WELD-DIA" in fields
+    finally:
+        tmp.unlink(missing_ok=True)