volt: Q109 -- spark env verifiers measure the import and their own inputs

snippet.py: check_tools() imports hermes_tools and requires callable(getattr(...));
--require is the negative-control hook; HERMES_HOME/HERMES_PROFILE/--home/--profile
resolve every path; rc 0/1/2. verify_hermes_setup.sh: HERE from $0, sibling
snippet.py graded, --home/--root/--profile, VERDICT line, rc 0/1/2.

New test_env_verifiers.py (14 black-box cells, stub hermes_tools on PYTHONPATH,
synthetic trees) and CHECK-env-verifiers. Pre-repair blobs: 9 cells red for
snippet.py, 6 for the shell script.

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; 36 further ids are opened by a record and own no heading at all, and they have rows and extents here -- 89 record blocks in all, 53 of them a later closure or correction for an id already opened. The same **36 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 29 times.
+**What it exposes.** The queue is two-tier. 97 sections carry 86 ids because 11 ids own a second, continuation section; 36 further ids are opened by a record and own no heading at all, and they have rows and extents here -- 90 record blocks in all, 54 of them a later closure or correction for an id already opened. The same **36 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 29 times.
 
 | # | id | kind | lines | bytes | role | title | first `Status:` |
 |---|---|---|---|---|---|---|---|
@@ -193,7 +193,8 @@
 | 183 | Q125 | heading | 13358-13380 | 3778 | opening | the spark lane holds eleven line/word/char counters, and the newest one replaced its predecessor's capabilities without retiring its verifier *(spark lane; opened 2026-10-28 by the pipe, at … | open and unclaimed. |
 | 184 | Q125 | record | 13381-13399 | 6812 | cont: DONE | **Q125 — DONE (volt, 2026-10-29, at `46b6282`; the repair landed under the spark lane's banner at `a979e63` and `46b6282`, and this record is the closure the queue was missing — the item still read … | -- |
 | 185 | Q120 | record | 13400-13401 | 3580 | cont: DONE | **Q120 — DONE (volt, 2026-10-29; this record and `docs/queue-index.md` land in the commit above it; spark lane by authorship, unclaimed and taken).** The health check now fails. Before: `python3 … | -- |
-| 186 | Q121 | record | 13402-13402 | 5320 | cont: DONE | **Q121 — DONE (volt, 2026-10-29; zeph lane by authorship, unclaimed and taken; this record and `docs/queue-index.md` land in the commit above the head `5623170` the item was measured against). The … | -- |
+| 186 | Q121 | record | 13402-13403 | 5321 | cont: DONE | **Q121 — DONE (volt, 2026-10-29; zeph lane by authorship, unclaimed and taken; this record and `docs/queue-index.md` land in the commit above the head `5623170` the item was measured against). The … | -- |
+| 187 | Q109 | record | 13404-13430 | 7752 | cont: DONE | **Q109 — DONE (volt, 2026-10-29; spark lane by authorship, unclaimed and taken). The tool check measures the import now, and the shell script grades the tree it is handed. Both named readings … | -- |
 
 ## Ids with no `## ` heading
 
@@ -218,10 +219,10 @@ Opened as records inside another section. `line` is the record's own opening lin
 | Q103 | 13010 | 13010 | 18 | Q102 | BULLET+BOLD | BOLD-LEAD |
 | Q104 | 13103 | 13103 | 18 | Q101 | BULLET+BOLD | BOLD-LEAD |
 | Q105 | 13135 | 13135 | 15 | Q104 | BULLET+BOLD | BOLD-LEAD |
-| Q106 | 13171 | 13171 | 11 | Q105 | BULLET+BOLD | BOLD-LEAD |
-| Q107 | 13189 | 13189 | 15 | Q106 | BULLET+BOLD | BOLD-LEAD |
+| Q106 | 13171 | 13171 | 12 | Q105 | BULLET+BOLD | BOLD-LEAD |
+| Q107 | 13189 | 13189 | 16 | Q106 | BULLET+BOLD | BOLD-LEAD |
 | Q108 | 13267 | 13263 | 3 | Q106 | BULLET+BOLD | BOLD-LEAD |
-| Q109 | 13270 | 13270 | 9 | Q104 | BULLET+BOLD | BOLD-LEAD |
+| Q109 | 13270 | 13270 | 11 | Q104 | BULLET+BOLD | BOLD-LEAD |
 | Q110 | 13272 | 13272 | 3 | Q109 | BULLET+BOLD | BOLD-LEAD |
 | Q111 | 13274 | 13274 | 7 | Q110 | BULLET+BOLD | BOLD-LEAD |
 | Q112 | 13276 | 13276 | 5 | Q111 | BULLET+BOLD | BOLD-LEAD |
@@ -232,7 +233,7 @@ Opened as records inside another section. `line` is the record's own opening lin
 | Q117 | 13290 | 13288 | 3 | Q96 | BULLET+BOLD | BOLD-LEAD |
 | Q118 | 13300 | 13300 | 2 | Q111 | BULLET+BOLD | BOLD-LEAD |
 | Q119 | 13305 | 13305 | 2 | Q118 | BULLET+BOLD | BOLD-LEAD |
-| Q120 | 13308 | 13308 | 7 | Q119 | BULLET+BOLD | BOLD-LEAD |
+| Q120 | 13308 | 13308 | 9 | Q119 | BULLET+BOLD | BOLD-LEAD |
 | Q121 | 13342 | 13342 | 2 | Q107 | BULLET+BOLD | BOLD-LEAD |
 | Q122 | 13344 | 13344 | 4 | Q121 | BULLET+BOLD | BOLD-LEAD |
 | Q123 | 13346 | 13346 | 4 | Q122 | BULLET+BOLD | BOLD-LEAD |
@@ -1393,17 +1394,30 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "title": "**Q120 \u2014 DONE (volt, 2026-10-29; this record and `docs/queue-index.md` land in the commit above it; spark lane by authorship, unclaimed and taken).** The health check now fails. Before: `python3 \u2026"
   },
   {
-   "bytes": 5320,
-   "end_line": 13402,
+   "bytes": 5321,
+   "end_line": 13403,
    "id": "Q121",
    "kind": "record",
    "line": 13402,
-   "lines": 1,
+   "lines": 2,
    "role": "continuation",
    "role_detail": "DONE",
    "status": null,
    "status_line": null,
    "title": "**Q121 \u2014 DONE (volt, 2026-10-29; zeph lane by authorship, unclaimed and taken; this record and `docs/queue-index.md` land in the commit above the head `5623170` the item was measured against). The \u2026"
+  },
+  {
+   "bytes": 7752,
+   "end_line": 13430,
+   "id": "Q109",
+   "kind": "record",
+   "line": 13404,
+   "lines": 27,
+   "role": "continuation",
+   "role_detail": "DONE",
+   "status": null,
+   "status_line": null,
+   "title": "**Q109 \u2014 DONE (volt, 2026-10-29; spark lane by authorship, unclaimed and taken). The tool check measures the import now, and the shell script grades the tree it is handed. Both named readings \u2026"
   }
  ],
  "ids_multi_section": {
@@ -3947,17 +3961,30 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "title": "**Q120 \u2014 DONE (volt, 2026-10-29; this record and `docs/queue-index.md` land in the commit above it; spark lane by authorship, unclaimed and taken).** The health check now fails. Before: `python3 \u2026"
   },
   {
-   "bytes": 5320,
-   "end_line": 13402,
+   "bytes": 5321,
+   "end_line": 13403,
    "id": "Q121",
    "kind": "record",
    "line": 13402,
-   "lines": 1,
+   "lines": 2,
    "role": "continuation",
    "role_detail": "DONE",
    "status": null,
    "status_line": null,
    "title": "**Q121 \u2014 DONE (volt, 2026-10-29; zeph lane by authorship, unclaimed and taken; this record and `docs/queue-index.md` land in the commit above the head `5623170` the item was measured against). The \u2026"
+  },
+  {
+   "bytes": 7752,
+   "end_line": 13430,
+   "id": "Q109",
+   "kind": "record",
+   "line": 13404,
+   "lines": 27,
+   "role": "continuation",
+   "role_detail": "DONE",
+   "status": null,
+   "status_line": null,
+   "title": "**Q109 \u2014 DONE (volt, 2026-10-29; spark lane by authorship, unclaimed and taken). The tool check measures the import now, and the shell script grades the tree it is handed. Both named readings \u2026"
   }
  ],
  "nested": [
@@ -4119,7 +4146,7 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "form": "BOLD-LEAD",
    "id": "Q106",
    "line": 13171,
-   "refs": 11,
+   "refs": 12,
    "section": "Q105",
    "shape": "BULLET+BOLD"
   },
@@ -4128,7 +4155,7 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "form": "BOLD-LEAD",
    "id": "Q107",
    "line": 13189,
-   "refs": 15,
+   "refs": 16,
    "section": "Q106",
    "shape": "BULLET+BOLD"
   },
@@ -4146,7 +4173,7 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "form": "BOLD-LEAD",
    "id": "Q109",
    "line": 13270,
-   "refs": 9,
+   "refs": 11,
    "section": "Q104",
    "shape": "BULLET+BOLD"
   },
@@ -4245,7 +4272,7 @@ The block below is the parse this document renders, byte for byte. `--check` com
    "form": "BOLD-LEAD",
    "id": "Q120",
    "line": 13308,
-   "refs": 7,
+   "refs": 9,
    "section": "Q119",
    "shape": "BULLET+BOLD"
   },
@@ -4291,9 +4318,9 @@ The block below is the parse this document renders, byte for byte. `--check` com
   "end_line": 8,
   "line": 1
  },
- "queue_bytes": 2085655,
- "queue_lines": 13402,
- "queue_sha256": "d37d9c08e090600cc8817ff6b56c6d5a3dcc2f0490957012d24524269a8d273f",
+ "queue_bytes": 2093408,
+ "queue_lines": 13430,
+ "queue_sha256": "bc4a5fbac8d035fa2845e50f002a8b712d4f0d5d3d25a4b6aeea0efb5c9c969c",
  "sections": [
   {
    "bytes": 3139,