fix(segmentation): hash the extracted text and let the plan key fire

tools/okf_propose_segments.py

@@ -57,6 +57,7 @@ sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "src"))
 from llm_ingestion_okf.errors import IngestError  # noqa: E402
 from llm_ingestion_okf.extract import extract_text  # noqa: E402
 from llm_ingestion_okf.materialize import reduce_to_id_grammar  # noqa: E402
+from llm_ingestion_okf.segmentation import observed_extractor_version  # noqa: E402
 
 #: Stamped into every entry's `derived` list. The marker is what keeps a
 #: proposal from being mistaken for the judgement the run path replays.
@@ -266,6 +267,7 @@ def build_plan(
 ) -> dict[str, Any]:
     """The artifact. Every entry PROPOSED, the plan itself never adjudicated."""
     taken: set[str] = set()
+    extractor_id = source.suffix.lower().lstrip(".") or "none"
     entries: list[dict[str, Any]] = []
     for candidate in find_candidates(text):
         entries.append(
@@ -286,8 +288,15 @@ def build_plan(
     return {
         "version": "1",
         "source_sha256": hashlib.sha256(source_bytes).hexdigest(),
-        "extractor_id": source.suffix.lower().lstrip(".") or "none",
-        "extractor_version": PROPOSER_VERSION,
+        # The hash the offsets actually depend on. Source bytes alone cannot
+        # see a converter reshaping its output, so the staleness signal this
+        # plan is supposed to carry did not exist until this line did.
+        "text_sha256": hashlib.sha256(text.encode("utf-8")).hexdigest(),
+        "extractor_id": extractor_id,
+        # The EXTRACTOR's version, not this tool's. `PROPOSER_VERSION` sat here
+        # and named the wrong thing: a converter bump left the field frozen at
+        # the proposer's own number, so the component could not move.
+        "extractor_version": observed_extractor_version(extractor_id),
         "adjudicated_at": proposed_at,
         # NOT a timestamp question. `adjudicated_at` records when this artifact
         # was produced; this records whether a human has looked at it, and it is