history(rs): score 2003 possession criminalisation and 2006 softening

@@ -1699,5 +1699,4 @@ was read in a Russian reprint. Two articles cover the 1987 decree and the
 unchanged.
 
-
 A [Suriname gap pass](research/history-suriname-gap-2026-10-26.md) on 26 October 2026 adds
 seven entries across 1918–1999 and two articles on the 1955 law and 1999 commencement.
@@ -1705,2 +1704,11 @@ The largest dated gap falls from 69 to 33 years. The 1908 import-ban narrative a
 passage/commencement distinction are corrected. The research note records why the existing
 early score aggregate still needs the full earlier legislation; no precise split is invented.
+
+A [Serbia gap pass](research/history-serbia-gap-2026-10-26.md) on 26 October
+2026 fills the 1950–2009 gap with two scored steps read from Belgrade
+criminal-law scholarship and the Constitutional Court: the 2003 amendments
+first criminalising non-sale possession (tightening 11→9) and the 2005 Code,
+in force 1 January 2006, softening penalties with personal-use and
+disclosure remission (easing 9→11). No scored 1974 Soviet step is asserted
+for the Yugoslav successors; the 2009 narrowing stays context. One article
+covers the 2003 criminalisation. Today's scores are unchanged.

@@ -0,0 +1,71 @@
+# Serbia: the 2003 possession criminalisation and the 2006 softening
+
+Research checked on 26 October 2026. Read `DATA-MAINTENANCE.md` and
+`WRITING.md`, the Serbia profile and its timeline before editing. No book
+was used. This pass fills the 1950–2009 gap — 59 years with no entry — with
+two scored steps and one article. Cameroon and the other active country
+passes were left untouched.
+
+## Sources actually read
+
+- Kolarić & Marković, "Two Decades of Criminal Justice Reforms in the
+  Field of Combating Illegal Drugs" (University of Criminal Investigation
+  and Police Studies, Belgrade; PDF via the university repository), in
+  full: the 1976 SFRY Code's two drug articles (Art 245 production/sale,
+  Art 246 enabling use) with no possession offence; the 1990 equipment
+  offence; the 2003 FRY amendments (Official Gazette RS 39/2003) first
+  criminalising non-sale possession (fine or up to three years), renaming
+  the offence and raising production/sale minimums to five and seven years;
+  court use of the summary offence against dealers; the 2005/2006 Code's
+  more lenient penalties with remission for personal-use possession and
+  disclosure; the 2009 narrowing to small-quantity personal possession.
+- Serbia Constitutional Court Bulletin 2/2009 (Serbian), the drug-offence
+  section: pre-2009 Art 246 paras 1–7 structure, possession with remission,
+  and the 72/09 amendments entering into force on 11 September 2009.
+- WIPO Lex record for the Serbian Criminal Code: adopted 29 September
+  2005, entry into force 1 January 2006 (Gazettes 85/2005 and others).
+- VERTIC English translation of the 2009 amendments: Articles 95–96 split
+  Art 246/246a, raised the production minimum from two to three years, set
+  the 6-month-to-5-year cultivation offence and the small-possession
+  fine-or-up-to-three-years offence with remission; Article 190 gives
+  eighth-day entry into force (consistent with 11 September 2009).
+- The English Wikipedia "Cannabis in Serbia" history section: the 1929
+  Code passed 27 January 1929 and in force 1 January 1930, corroborating
+  the existing 1930 entry's date.
+
+Deliberately not done: no scored 1974 Soviet-possession step for Serbia.
+Unlike the Baltic entries, the Yugoslav successor chain cannot take one
+without re-scoring the checked 1950 federal-act step (its after-state is
+shared by seven successor states). The SFRY 1990 equipment offence and the
+1964/1990 SFRY convention ratifications are noted here but left out as too
+small or covered by succession convention.
+
+## What changed
+
+- New `serbia-possession-criminalised-2003` (2003, tightening, scored,
+  `before` {1,1,2,1,1,0}): first criminalisation of non-sale possession,
+  enforcement 2→1. Step 11→9.
+- New `serbia-new-criminal-code-2006` (2006-01-01, easing, scored,
+  `before` {1,1,1,1,1,0}): lenient penalties plus personal-use and
+  disclosure remission, enforcement 1→2. Step 9→11.
+- The 2009 `other` entry is left untouched: its narrowing is real but
+  moves no segment at this scale, and the 2006-after state already equals
+  the 2019 `before`.
+- Final chain: 1930 100→14, 1950 14→11, 2003 11→9, 2006 9→11, 2019 11→9.
+  Today's profile scores are unchanged, so the profile file was not edited.
+
+## Article
+
+- `articles/serbia-possession-criminalised-2003.md` (356 words, three
+  headings): the possession-free 1976 code, the 2003 first criminalisation,
+  and the 2006–2009–2019 pendulum with the 11→9→11→9 round trip. Links to
+  the 2006 and 2019 entries and `/country/rs/`.
+
+## Validation
+
+- `node scripts/data-status.cjs chain rs`: five steps, 0 flagged.
+  `npm run scores:triage -- rs`: 5 scored, 0 open.
+- `npm run history:test` and `npm run answers:test`: all pass.
+- Production build passes; both new pages render.
+- Concurrent agents' work in shared files is untouched; this commit stages
+  only the Serbia hunks and files.