Fill Vietnam criminal-code history and correct capital-penalty scoring

@@ -1609,2 +1609,12 @@ An undated amendment slip in the 1932 annual volume is kept separate from the
 original law. Existing score snapshots and the current profile are preserved
 pending reconstruction of the earlier aggregate 1914 step.
+
+A [Vietnam criminal-code pass](research/history-vietnam-codes-2026-10-26.md)
+on 26 October 2026 adds the 1986 organising-use provision and the replacement
+code operating from July 2000. Two new articles and a rewritten 1989 article
+connect the statutes. The 1997 event now uses its confirmed 22 May commencement
+and explains that its use offence required prior education and compulsory
+treatment. Current capital cannabis sale penalties require enforcement 0 under
+the existing rubric; the profile and three later historical before-vectors are
+corrected together, taking the displayed current score from 5 to 3. Other score
+dimensions and the unresolved pre-1968 reconstruction remain unchanged.

@@ -0,0 +1,125 @@
+# Vietnam's criminal-code gap, 1985–2000
+
+Reviewed 26 October 2026. Read DATA-MAINTENANCE.md's source, commencement,
+score-chain and validation rules, WRITING.md, BOOKS.md and the earlier Vietnam
+1968 research note. No book was used and no catalogue coverage is claimed.
+
+## Sources actually read
+
+- Read the original 1985 code reproduced by [Luat Minh Khue](https://luatminhkhue.vn/van-ban/bo-luat-hinh-su-nam-1985.aspx),
+  especially Article 203 and the commencement metadata, which gives 1 January
+  1986. Organising narcotics use carries six months–five years, or three–ten
+  years for serious consequences/dangerous recidivism. The article is generic
+  to narcotics and does not itself name cannabis. It supplies context for the
+  later drug chapter, without establishing the first cannabis prohibition.
+  Article 97's highest original smuggling band reaches life, not death.
+- Read the [1989 amendment's reproduced statutory text](https://vanbanphapluat.co/bo-luat-hinh-su-1989-sua-doi-30-lct-hdnn8),
+  Article 2(3), introducing Article 96a. The three bands are two–seven,
+  five–fifteen, and twelve–twenty years/life/death. The statute itself gives no
+  cannabis weight thresholds. The [national database page](https://vbpl.vn/botaichinh/Pages/vbpq-toanvan.aspx?ItemID=2082)
+  was opened earlier in this research pass and its legislative metadata read:
+  adoption 28 December 1989, commencement 2 January 1990. Later requests returned
+  403/502. Retain the established commencement; cite the independently read
+  reproduction for the substantive drug clause. The existing Caselaw address
+  also failed on later requests.
+- Downloaded the actual [government 1997 RTF](https://datafiles.chinhphu.vn/cpp/files/vbpq/2006/07/3420_l57qh.rtf).
+  Converted it with textutil and decoded the legacy .VnTime/TCVN characters,
+  preserving ASCII. Read Articles 185a, 185b–185e, 185l and the replacement
+  clauses. The cultivating offence requires repeated education, livelihood
+  assistance and an administrative sanction followed by continued offending.
+  The use offence requires repeated education and administrative placement in
+  compulsory treatment followed by continued illegal use. Neither text supports
+  the old blanket description of every act of use becoming a crime.
+- Read the [Supreme People's Court's Letter 59/KHXX](https://thuvienphapluat.vn/cong-van/linh-vuc-khac/cong-van-59-khxx-ap-dung-quy-dinh-cua-luat-bo-sung-bo-luat-hinh-su-46845.aspx),
+  dated 6 June 1997, especially Part I(1)–(4). It explicitly gives **22 May
+  1997** as commencement following adoption on 10 May and distinguishes new or
+  harsher offences from retrospective application of favourable amendments.
+  The government catalogue's apparent January date is not used. An English
+  reproduction of the amendment shifts Vietnamese letter labels; the original
+  Vietnamese Article **185l** is the use offence.
+- Read [the 1999 code's English statutory reproduction](https://english.luatvietnam.vn/penal-code-no-15-1999-qh10-dated-december-21-1999-of-the-national-assembly-10166-doc1.html),
+  Articles 192–194 and 199. The public page supplies the body; no login or
+  access-control workaround was used. Article 194 combines possession,
+  transport, trade and appropriation, while retaining the five-kilogram resin
+  and seventy-five-kilogram leaves/flowers/fruit thresholds. Its highest band
+  adds twenty years as an alternative to life/death. The [national database
+  metadata](https://vbpl.vn/TW/Pages/vbpq-thuoctinh.aspx?ItemID=6157) was opened
+  and read: adoption 21 December 1999, commencement **1 July 2000**, replacement
+  **1 January 2018**. Provincial/database mirrors were intermittently inaccessible.
+- Read [the 2015 code's statutory reproduction](https://english.luatvietnam.vn/criminal-code-no-100-2015-qh13-dated-november-27-2015-of-the-national-assembly-101324-doc1.html),
+  Article 251, as a continuity check: the sale offence retains twenty years,
+  life or death at five kilograms of resin or seventy-five kilograms of the
+  then-listed plant parts. This is the older wording, not the current rule.
+  The official 2017 consolidated code is split across Gazette issues; the
+  accessible 779–780 PDF starts at Article 295 and does not verify Article
+  251. The relevant 777–778 download failed and is not claimed as read.
+- Read [the government's current Article 251 text](https://xaydungchinhsach.chinhphu.vn/muc-phat-toi-mua-ban-trai-phep-chat-ma-tuy-119250722173411884.htm):
+  twenty years/life at five to under thirty kilograms of resin or seventy-five
+  to under 150 kilograms of listed plant parts; life/death at thirty/150.
+  This source already exists as `a251` in the profile. The contemporary plant
+  list includes roots, stem and branches; those are not backdated into the
+  1997 and 1999 lists of leaves, flowers and fruit.
+
+A government policy-history article was also read as background. It contains
+inconsistent retrospective dates, so its summaries do not override the statutes.
+The old Law and World study's inconsistent historical table and loosely dated
+sentencing totals are removed from the 1989 article rather than repeated.
+Research downloads and extraction are local in
+`tmp/history-vietnam-codes-2026-10-26/`.
+
+## Entries, articles and scores
+
+Added two checked context events: the 1986 organising-use provision and the
+2000 replacement code. Both are explicitly unscored. The earlier national
+baseline remains unreconstructed; the later code reorganises existing offences
+and retains capital exposure at the existing enforcement floor.
+
+Rewrote the 1997 event with its exact commencement and conditional use offence,
+and added its article. Added a 2000 article and rewrote the 1989 article against
+statutory texts. Each article has 350–500 words, three or four sections, numbered
+citations and links to the surrounding events.
+
+The previous profile had recreational status `death`, correctly described
+capital cannabis sale penalties, but enforcement **1**, whose rubric is custodial
+penalties. Enforcement **0** expressly covers death, corporal punishment or long
+sentences. Correct the profile to 0 and explain the current capital sale bands
+with its existing primary source. This corrects the scoring application; it does
+not claim a newly enacted restriction or that personal use itself carries death.
+
+The before-vectors for the 1997, 2009 decriminalisation and 2025 repeat-use events
+therefore also change only enforcement, from 1 to 0. Preserve the 1990 event's
+before-vector at 2, all other historical dimensions, and all other country data.
+The chain is now displayed as 8→4 in 1990, 4→3 in 1997, 3→4 in 2009 and 4→3
+in 2025, ending at **2.5, displayed as 3** today. The earlier 1968 100→8 step and
+pre-reunification territorial scope remain open as documented in the previous
+research note; this batch does not validate that inherited reconstruction.
+
+## Validation
+
+Semantic comparison confirms every baseline record remains, only the four
+intended existing Vietnamese records changed, and only the three authorised
+before-vector values changed. Profile edits are limited to enforcement, its
+explanation/source and the review date. Article citation ranges, complete source
+usage, word counts and history links pass. The 55 existing history and answer
+tests pass. An initial build rejected an unsupported `detention` tag; removed it
+and retained the existing `sentencing` and `treatment` vocabulary.
+
+Production build and rendered/browser verification results are recorded below
+once complete. Unrelated source-archive changes are excluded from the commit.
+
+Final verification: the production build passed with **4,186 pages**. Rendered
+checks passed for both additions, all three articles, the country page, history
+index and relevant decade pages. Numbered references resolve uniquely, internal
+history links exist, all sources are used, exact dates render and the API ends
+at 2.5. The in-app browser confirmed the profile's displayed 3, enforcement 0/10
+with the capital-sale explanation, chart steps, all 16 country history entries,
+the Vietnam-filtered history listing and the 1997 article with its references.
+The temporary static site and preview server were removed after verification;
+research extracts and build logs are retained locally.
+
+During final verification, concurrent Puerto Rico changes appeared in the shared
+history file and two unrelated articles. The initial production build and
+preservation check had passed before those edits. A fresh candidate reconstructed
+from HEAD plus only this batch's six added/modified event blocks passed the same
+strict preservation checks. Only that Vietnam candidate is staged for history;
+the concurrent work remains in the working tree.