feat: persist machine fulltext hash for initial OCR

paperforge/worker/ocr.py

@@ -1988,13 +1988,7 @@ def postprocess_ocr_result(vault: Path, key: str, all_results: list[dict]) -> tu
         document_structure=doc_structure,
         reader_payload=reader_payload,
     )
-    meta = write_render_outputs(
-        render_root=ocr_root / "render",
-        user_fulltext=ocr_root / "fulltext.md",
-        markdown=markdown,
-        meta=meta,
-        rebuild_increment=False,
-    )
+    
 
     # --- Phase 3: OCR health report ---
     from paperforge.worker.ocr_health import (
@@ -2062,6 +2056,13 @@ def postprocess_ocr_result(vault: Path, key: str, all_results: list[dict]) -> tu
     except ValueError:
         meta["legacy_images_path"] = str(images_dir)
     meta["path_map"] = {"structured_truth": "assets/", "legacy_compat": "images/"}
+    meta = write_render_outputs(
+        render_root=ocr_root / "render",
+        user_fulltext=ocr_root / "fulltext.md",
+        markdown=markdown,
+        meta=meta,
+        rebuild_increment=False,
+    )
     write_json(meta_path, meta)
 
     fulltext_path = ocr_root / "fulltext.md"

tests/test_ocr_initial_fulltext_writeback.py

@@ -0,0 +1,34 @@
+import json
+from pathlib import Path
+
+
+def _minimal_results() -> list[dict]:
+    return [{
+        "layoutParsingResults": [{
+            "prunedResult": {
+                "width": 600,
+                "height": 800,
+                "parsing_res_list": [
+                    {"block_label": "doc_title", "block_content": "Example", "block_bbox": [0, 0, 100, 20], "block_order": 0},
+                    {"block_label": "text", "block_content": "Body", "block_bbox": [0, 40, 100, 80], "block_order": 1},
+                ],
+            }
+        }]
+    }]
+
+
+def test_initial_ocr_persists_machine_hash_without_rebuild_fields(tmp_path: Path, monkeypatch) -> None:
+    from paperforge.worker.ocr import postprocess_ocr_result
+
+    vault = tmp_path
+    key = "K1"
+    paper_root = vault / "System" / "PaperForge" / "ocr" / key
+    (paper_root / "meta.json").parent.mkdir(parents=True, exist_ok=True)
+    (paper_root / "meta.json").write_text('{"source_pdf": ""}', encoding="utf-8")
+
+    postprocess_ocr_result(vault, key, _minimal_results())
+
+    meta = json.loads((paper_root / "meta.json").read_text(encoding="utf-8"))
+    assert meta["machine_fulltext_hash"].startswith("sha256:")
+    assert "rebuild_finished_at" not in meta or not meta["rebuild_finished_at"]
+    assert int(meta.get("rebuild_count") or 0) == 0