docs: d1 ledger DISCHARGED schema note + reading map #81 status (Grok Bot agent 6)

reviews/d1_chain_reconciliation_20260928/SCHEMA_NOTE.md

@@ -0,0 +1,11 @@
+# LEDGER.json schema note: residual_items status
+
+Scientific effect: NONE. Additive documentation; changes no proof, review verdict, status value, graph node, prize or premise.
+
+In `LEDGER.json`, each entry of `residual_items` has `"status": "DISCHARGED"`. Here that value means only:
+
+- **residual review remark addressed** by the interfaces or reconciliation sections listed in `discharged_by`;
+- **not an OBL discharge**: no open obligation (OBL-*, including OBL-H5-JETMOD) is discharged, closed or promoted by these rows;
+- **no fail-closed flag affected**: `lemma_closed`, `prizes_solved`, `discharges_OBL_H5_JETMOD`, `certified_C_H` and similar controls are unchanged.
+
+`reconciliation_check.py` requires the literal value `DISCHARGED` (L107 and L177), so the value is kept as is; this note documents its meaning without renaming it.

reviews/d1_chain_reconciliation_20260928/SOURCE_FILES.json

@@ -37,6 +37,12 @@
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