Höpken and Carlson at Constantinople, 1740–1741: the second code, a glossed despatch and two bare French documents

TASK: take a partial decipherment further: Höpken and Carlson at Constantinople, 1740–1741: the second code, a glossed despatch and two bare French documents
This page: https://dbourdeau.github.io/cyphersolver/further/hopken1740.html

You are helping a public research project finish reading historical cipher letters. This one is read in part:
the key works, but some pieces are still open. Your job is to close one or more of the open gaps below.

THE READING
  Write-up:   https://dbourdeau.github.io/cyphersolver/hopken1740.html (read it first: how the text was read, the key, the reading)
  Date:       1740–41
  Outcome:    key from adjacent plaintext · partial
  Read now:   86.6% of the deciphered cipher tokens give sense (pieces below may be untouched)
  Files:      https://github.com/dbourdeau/cyphersolver/tree/main/targets/hopken1740 (NOTES.md, key, transcription, reading, scripts)

OPEN GAPS (from NOTES.md, "## Remaining gaps")
  1. [open-codes: doable now] 7 words with a value conflict (322 r15 i, 324 l01 Ryska gränsen, 325 l14 bewijs, 326 l01 slutande, 328 r08 försäkra, 328 l09 aldrahögstes, 328 l18 allernådigst) - blocker: open-codes; both copies agree on the digits, the word reads from the gloss, probably slips of the encipherer or a homophone not separated
  2. [open-codes: doable now] 3 words where the split between groups is unknown (327 r06 "1500", 330 l08 willkor, 331 l14 pröfwas) - blocker: open-codes; 1640, 1689, 1771 not fixed
  3. [open-codes: doable now] 1 gloss unread (323 l08, a name over 1313, looks like "v: Haren") - blocker: open-codes; single occurrence, clear in both copies
  4. [illegible: needs a new source] A few clear (unenciphered) words are doubtful in the hand (330 l02-03, r02, r03; 321 inserted word) - blocker: illegible
  5. [open-codes: doable now] Context values in the Castellane exchange not confirmed by a gloss - blocker: open-codes; 1026 Monsieur (2), 1286 V[otre] (3), 1520 cha (2), 1478 eu (3), 1452 jo (2), 1605 où (2), 1339 zo, 1438 f (in Romanzof), 1083 flé, 1056 mu, 1409 il, 1508 ai, 1581 eux, 1326 ux, 1733 ns, 1747 cri; changed value {ha/grè} (1496, congrès).
  6. [open-codes: doable now] 1515 (reply, M05) unread - blocker: open-codes; one place only.
  7. [open-codes: doable now] "Laria" (49 L12) - blocker: open-codes; la-ri-a-[1409]-le gives one a for two words (marked `{+a}`), or the name is "Lari". The reviewer recalls a dragoman family of this name at the French embassy; not checked.
  8. [open-codes: doable now] The 13 guessed words of the Castellane letter - blocker: open-codes; Dan's checker gives 0.444, just under its 0.45 line, because each `[?word]` counts as a hole. The reviewer reads all four sentences as holding and grades the letter read in part (B); if the line is held strictly, "decoded, not read" is the fallback the reviewer names but does not recommend.
  9. [illegible: needs a new source] Doubtful digits - blocker: illegible; 49 L07 1840? (3 or 8), L10 1227?; 50 M01 1678? (0 or 8), M14 1613? (blot, 1613 or 1633); 147 H11 1678?, H16 1442? (a figure written below). Kept doubtful on 2x crops.
  10. [needs-physical-access: needs a new source] Castellane's side of the exchange in the French archives (Nantes, Constantinople embassy series: his correspondence of 1740-47 is listed in the inventory) - blocker: needs-physical-access; the clear originals, if they survive, would be a crib; not searched beyond the inventory entry.
  11. [needs-physical-access: needs a new source] A human second reader of the digits and the French - blocker: needs-physical-access; both passes of the 1741 transcription were by one agent and every reader so far was an AI agent; the blind review spot-checked 92 groups on images 147, 49 and 50 and the integration about 300, with no disagreement.

ALREADY TRIED (from NOTES.md, "## Escalation")
  [x] siblings: the leaves before and after the despatch opened, its second copy (332-342) used as a control; the four volumes named by catalogue 2245-2248 paged at 1200 px, and the glossed Lit. A page of I/9/26 used as held-out test and key extension for the bare pages of I/9/27
  [x] clear-pages: the gloss is the decipherment on the despatch and on Lit. A; images 49-50 checked for a gloss or a clear copy (none)
  [x] known-keys: not the hopken1739 code (values clash; recognised on I/9/24 but not applied); the stade1710 key does not fit; this folder's key applied frozen to the 1741 pages
  [x] print: web searches of 10-12 Nov 2026, repeated at the integration (Castellane, Höpken, Carlson, the congress): no edition or decipherment; the Nantes inventory lists Castellane's correspondence of 1740-47, which was not opened
  [x] key-rebuild: the despatch's key frozen and tested (235 confirmed values) and extended by 26 values from Lit. A's gloss; for the 1741 bare pages the remaining context values rest on the sense (listed in the gaps, open-codes); the glossed runs that could confirm them are outside this target (above)
  [x] retry: the despatch's doubtful lines rechecked twice (11 remain); 1515 and the doubtful digits of the 1741 pages retried on 2x crops (kept doubtful), and about 300 groups of images 49 and 147 compared again at the integration

STEPS
0. Set up. If you can run a shell, fork and clone the repository and work inside it:
     git clone https://github.com/dbourdeau/cyphersolver.git
   Then read, in this order: CONTRIBUTING.md (how a contribution is sent and credited); README.md, sections
   "Repository layout" and "Conventions" (how readings are measured and named); targets/hopken1740/NOTES.md in full, and the
   key, transcription and reading files it names; lang/README.md (shared language models).
   Work in targets/hopken1740/. Add your findings to NOTES.md under a dated heading without rewriting what is there, and
   update the "## Remaining gaps" line of every gap you close. Keep WORKLOG.md there: one dated line per step
   (hypothesis, value tried, solver run, crib, control), failures included. Do not edit docs/ (the site is generated).
   If you cannot run a shell, fetch the files from the links above and keep your work in files you send with the issue.
1. Pick a gap. Start with the ones marked "doable now" (open-codes, not-attempted, left-open): the images and the key
   are online, so they need only work. A gap marked "needs a new source" (no-key-material, too-short, illegible,
   needs-physical-access) can be closed only by something new: a key
   or a deciphered sibling found elsewhere, a better image, a printed edition or calendar, a photograph from the archive.
   For those, search for that material first, and say where you looked even when you find nothing.
2. Start from the existing key and transcription in the folder. Do not rebuild the key from scratch, and do not
   re-read parts that are already read unless you find an error in them.
3. For a code group or sign value: list every place the group occurs, show how each reads with the value you propose,
   and say what still does not fit. For a passage: re-read it at the image and give the folio and line. For a missing
   letter or leaf: say where it is held and how it can be reached.
4. Measure again. Apply the key to the whole text, write the reading file, and count the share of cipher tokens that
   give sense (not an estimate). The reading is "complete" only when (1) at least 95% of its cipher tokens give sense;
   (2) no gap is left untried; (3) every letter in it is covered; (4) what stays open is scattered code groups or names,
   or pieces blocked from outside. Otherwise it stays "partial": say which gaps are still open and why.
5. Be honest. Mark every uncertain word with [?], leave unread groups as their numbers or signs, and never fill a gap
   with a plausible guess. A gap retried and still open, with what was ruled out, is worth reporting.

REPORT BACK
With a clone: open a pull request with your changes to targets/hopken1740/. Say in the description which gaps you worked on,
  the share read before and after, and how you want to be credited (name, initials or handle, and a link).
Without one: open an issue: https://github.com/dbourdeau/cyphersolver/issues/new?template=further-reading.yml&title=Further+reading%3A+hopken1740&page=hopken1740.html
  Give the write-up, the gap you worked on (its line in Remaining gaps, or the code group, folio and line), what you
  propose, the evidence (every occurrence, the images or sources), the share read before and after, your step log,
  and the tools and AI model you used.
If you cannot open issues or pull requests, write this report for your human to send. Credit goes to the person who sends it.