volt: Q80 -- json_sha256_validator hashes the bytes it parsed, refuses NaN, splits rc 1/2

Q80 (spark lane by authorship, unclaimed and taken). Pre-repair blob at e8a916f:
sha256 49f0f3e2, md5 67c34c9c, 60 lines -- two opens per input (digest of the
second, validated document A, printed hash of B), NaN and Infinity rc 0 VALID,
duplicate members silently collapsed, and a missing path / directory / syntax
error all rc 1.

Repaired: 185 lines, sha256 26cb270c. One read serves both halves
(Path.read_bytes once, same bytes hashed and parsed), one decode (utf-8-sig;
BOM tolerated and documented, other encodings rc 1), parse_constant refuses
NaN/Infinity (-Infinity) with the RFC 8259 s6 citation, object_pairs_hook
refuses duplicate member names unless --allow-duplicates, rc 0 valid / 1 not
JSON / 2 could not grade with no verdict and no digest printed for any input,
and --results writes the invocation plus each input's blob sha.

Cells: wizard-work/spark/test_json_sha256_validator.py (new), 15 cells,
sha256 0d2038ea -- "Ran 15 tests ... OK", rc 0. Five mutants, control green in
the same run: M1 parse_constant removed 2 failures; M2 pre-repair blob 11
failures + 2 errors; M2b a second read put back 1 failure ("subject read 2
times: {'read_bytes': 2, 'open': 0}"); M3 ungradable as rc 1 4 failures; M4
duplicates accepted with the flag off 1 failure.

Wiring: wizard-work/spark/CHECK leg 13. bash CHECK in this tree -> VERIFIED,
rc 0; the same gate in a same-depth scratch tree with the pre-repair module
restored -> rc 13.

Gate: python3 tools/verify.py --repo . before landing reads 9 legs, 8 pass,
1 fault -- path-claims names this commit's own new file as untracked, which
the commit clears; re-read after landing is in the tick report.

CHECK: python3 wizard-work/spark/test_json_sha256_validator.py

docs/queue-index.md

@@ -4,7 +4,7 @@
 
 **What this is.** One row per item of `WORK-QUEUE.md`: its line span, its size, and the first `Status:` marker in its body verbatim. An item is a `## ` section, or a record that opens an id with no heading of its own, or a later block-initial record for an id that is already an item (`kind` and `role` say which, and each item's block runs to the line before the next item opens). Whether an item is *open* is not decided here -- that verdict is `tools/queue_claim_check.py`'s, and this document does not overrule it.
 
-**What it exposes.** The queue is two-tier. 97 sections carry 86 ids because 11 ids own a second, continuation section; 38 further ids are opened by a record and own no heading at all, and they have rows and extents here -- 100 record blocks in all, 62 of them a later closure or correction for an id already opened. The same **38 ids** are listed again in the table below, which carries what a bounds row cannot -- the form that opened each one and how often the file names it: grepping `^## Q41` finds nothing while Q41 is a live item the file names 30 times.
+**What it exposes.** The queue is two-tier. 97 sections carry 86 ids because 11 ids own a second, continuation section; 38 further ids are opened by a record and own no heading at all, and they have rows and extents here -- 101 record blocks in all, 63 of them a later closure or correction for an id already opened. The same **38 ids** are listed again in the table below, which carries what a bounds row cannot -- the form that opened each one and how often the file names it: grepping `^## Q41` finds nothing while Q41 is a live item the file names 30 times.
 
 | # | id | kind | lines | bytes | role | title | first `Status:` |
 |---|---|---|---|---|---|---|---|
@@ -204,7 +204,8 @@
 | 194 | Q113 | record | 13525-13544 | 12052 | cont: DONE | **Q113 — DONE (volt, 2026-10-29, at the commit above this record; ledger lane by authorship, unclaimed and taken). The roster gate could not fail, graded its own hardcoded copy of the CSV, never … | -- |
 | 195 | Q126 | record | 13545-13556 | 6952 | record: BOLD-LEAD | **Q126 — DONE (volt, 2026-10-30; both faults were unowned tooling debt and both are closed by measurement: the nine host-bound test files now bind the module beside them, and the path-claims ledger … | -- |
 | 196 | Q110 | record | 13557-13576 | 8439 | cont: DONE | **Q110 — DONE (volt, 2026-10-30, at the commit this record lands in; quill lane by authorship, unclaimed and taken). `wizard-work/quill/QUICKSTART.md` no longer prints a command nobody ran: every … | -- |
-| 197 | Q127 | record | 13577-13597 | 9706 | record: BOLD-LEAD | **Q127 — OPENED and REPAIRED in the same tick (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). A ten-file sweep put Q109's and Q120's pre-repair … | -- |
+| 197 | Q127 | record | 13577-13598 | 9707 | record: BOLD-LEAD | **Q127 — OPENED and REPAIRED in the same tick (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). A ten-file sweep put Q109's and Q120's pre-repair … | -- |
+| 198 | Q80 | record | 13599-13615 | 7450 | cont: DONE | **Q80 — DONE (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). All four filed defects reproduce at HEAD `e8a916f`, and none survives: the digest … | -- |
 
 ## Ids with no `## ` heading
 
@@ -232,7 +233,7 @@ Opened as records inside another section. `line` is the record's own opening lin
 | Q106 | 13171 | 13171 | 14 | Q105 | BULLET+BOLD | BOLD-LEAD |
 | Q107 | 13189 | 13189 | 18 | Q106 | BULLET+BOLD | BOLD-LEAD |
 | Q108 | 13267 | 13263 | 3 | Q106 | BULLET+BOLD | BOLD-LEAD |
-| Q109 | 13270 | 13270 | 22 | Q104 | BULLET+BOLD | BOLD-LEAD |
+| Q109 | 13270 | 13270 | 23 | Q104 | BULLET+BOLD | BOLD-LEAD |
 | Q110 | 13272 | 13272 | 6 | Q109 | BULLET+BOLD | BOLD-LEAD |
 | Q111 | 13274 | 13274 | 7 | Q110 | BULLET+BOLD | BOLD-LEAD |
 | Q112 | 13276 | 13276 | 6 | Q111 | BULLET+BOLD | BOLD-LEAD |
@@ -1549,17 +1550,30 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "title": "**Q110 \u2014 DONE (volt, 2026-10-30, at the commit this record lands in; quill lane by authorship, unclaimed and taken). `wizard-work/quill/QUICKSTART.md` no longer prints a command nobody ran: every \u2026"
   },
   {
-   "bytes": 9706,
-   "end_line": 13597,
+   "bytes": 9707,
+   "end_line": 13598,
    "id": "Q127",
    "kind": "record",
    "line": 13577,
-   "lines": 21,
+   "lines": 22,
    "role": "record",
    "role_detail": "BOLD-LEAD",
    "status": null,
    "status_line": null,
    "title": "**Q127 \u2014 OPENED and REPAIRED in the same tick (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). A ten-file sweep put Q109's and Q120's pre-repair \u2026"
+  },
+  {
+   "bytes": 7450,
+   "end_line": 13615,
+   "id": "Q80",
+   "kind": "record",
+   "line": 13599,
+   "lines": 17,
+   "role": "continuation",
+   "role_detail": "DONE",
+   "status": null,
+   "status_line": null,
+   "title": "**Q80 \u2014 DONE (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). All four filed defects reproduce at HEAD `e8a916f`, and none survives: the digest \u2026"
   }
  ],
  "ids_multi_section": {
@@ -4246,17 +4260,30 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "title": "**Q110 \u2014 DONE (volt, 2026-10-30, at the commit this record lands in; quill lane by authorship, unclaimed and taken). `wizard-work/quill/QUICKSTART.md` no longer prints a command nobody ran: every \u2026"
   },
   {
-   "bytes": 9706,
-   "end_line": 13597,
+   "bytes": 9707,
+   "end_line": 13598,
    "id": "Q127",
    "kind": "record",
    "line": 13577,
-   "lines": 21,
+   "lines": 22,
    "role": "record",
    "role_detail": "BOLD-LEAD",
    "status": null,
    "status_line": null,
    "title": "**Q127 \u2014 OPENED and REPAIRED in the same tick (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). A ten-file sweep put Q109's and Q120's pre-repair \u2026"
+  },
+  {
+   "bytes": 7450,
+   "end_line": 13615,
+   "id": "Q80",
+   "kind": "record",
+   "line": 13599,
+   "lines": 17,
+   "role": "continuation",
+   "role_detail": "DONE",
+   "status": null,
+   "status_line": null,
+   "title": "**Q80 \u2014 DONE (volt, 2026-10-30, at the commit this record lands in; spark lane by authorship, unclaimed and taken). All four filed defects reproduce at HEAD `e8a916f`, and none survives: the digest \u2026"
   }
  ],
  "nested": [
@@ -4445,7 +4472,7 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "form": "BOLD-LEAD",
    "id": "Q109",
    "line": 13270,
-   "refs": 22,
+   "refs": 23,
    "section": "Q104",
    "shape": "BULLET+BOLD"
   },
@@ -4608,9 +4635,9 @@ The block below is the parse this document renders, byte for byte. `--check` com
   "end_line": 8,
   "line": 1
  },
- "queue_bytes": 2167300,
- "queue_lines": 13597,
- "queue_sha256": "3ed7ff7e05b14f66be05cf3a3e266f43934c3de2135b2b5c30dd970b762473f0",
+ "queue_bytes": 2174751,
+ "queue_lines": 13615,
+ "queue_sha256": "8dcbb0dc01717d8841ef41738f0b297ba674148eddf76109227ddeddb6c7e166",
  "sections": [
   {
    "bytes": 3139,