history: correct Guyana 1913 entry to bonded-warehouse model; add article

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+# Research pass: Guyana 1913 article, entry corrected to warehouse model
+
+Research checked on 26 October 2026. The 1913 entry's self-contradictory
+description (prohibition claim vs Mills's warehouse account) is resolved in
+favour of the read primary scholarship, with a new properly sourced
+article; a 1948 UN order read in full supplies the article's ending. No
+scores, profiles or timelines changed.
+
+## What was verified (all sources actually read)
+
+### Mills, Cannabis Britannica (local PDF, read in full relevant passages)
+
+- The Indian Hemp Ordinance of British Guiana 1913 and Trinidad's Ganja
+  Ordinance 1915 both set up bonded-warehouse and licence-fee systems for
+  imported cannabis on the Bengal model recommended by the Indian Hemp
+  Drugs Commission; Guiana took the West Indian initiative. Cited to PRO
+  HO 144/6073, 29 April 1924. Framed as tax-and-control ("a slice of the
+  profits of the drug trade"), not prohibition of use.
+- This contradicts the entry's old first sentence (prohibition of growing
+  and possession, from Wikipedia). Entry rewritten: retitled to the
+  warehouse measure, licensing description with per-sentence citations,
+  Wiki source removed, Mills locator sharpened. Category stays `ban` (the
+  colony's first import restriction; cf. the 1861 licensing entry also
+  being `ban`), and the partial `before` scores are untouched — they fit a
+  licensing regime better than a ban.
+- New `articles/guyana-indian-hemp-ordinance-1913.md` (355 words, 4
+  sections, all 3 sources cited): the Bengal template and "slice of the
+  profits" motive from Mills; 1861 anticipatory licensing, migrant numbers
+  and the ganja complex from the Banks chapter (local EPUB, re-read);
+  Trinidad 1915 copy; 1937 Ordinance and 1948 order from the UN filing;
+  links to the 1861 and 2022 entries and /country/gy/.
+
+### UN E/NL.1948/42 (British Guiana, read in full via UN Digital Library)
+
+- Order in Council No. 28 of 1948, made 25 May 1948 under s.10(3) of the
+  Dangerous Drugs Ordinance No. 10 of 1937: Part IV extended to amidone,
+  desomorphine, metopon, pethidine and non-external Indian-hemp
+  extract/tincture preparations. Added as article source [3]; the 1937
+  entry itself was left untouched (already accurate).
+
+## Dead ends recorded, not forced
+
+- The 1913 ordinance text and the 1924 Home Office file (PRO HO
+  144/6073) are not readable online; Mills's account is the cited
+  evidence. No claim made about growing/possession provisions either way.
+- Gallica remains 403 from here (Madagascar JO lane closed). USVI 1937
+  and Denmark 1969 lanes need nothing (already primary-sourced).
+
+## Verification and files
+
+- `node -e` YAML load of changes.yaml clean (run before build).
+- `npm run build`, `npm run history:test`, `npm run answers:test` all green;
+  rendered `/history/guyana-indian-hemp-ordinance-1913/` citation marks
+  checked.
+- Commit limited to own work: the 1913 hunk in changes.yaml, the new
+  article, this note. Foreign staged/worktree files excluded and preserved.