docs: migrate repository guidance to Gitea

.scratch/plan-statistics/issues/05-warn-about-weeks-with-one-workday.md

@@ -5,13 +5,13 @@
 **Blocked by:**
 
 - 01 — Open plan statistics for calculated leave usage.
-- [#61 — Saisir, sauvegarder et figer les jours déjà posés](https://gitlab.nessar.fr/nessar/vac-optimizer/-/issues/61), which carries fixed declared non-working days with the producing calculation and its outcomes.
+- [#61 — Saisir, sauvegarder et figer les jours déjà posés](https://gitea.nessar.fr/nessar/vac-optimizer/issues/61), which carries fixed declared non-working days with the producing calculation and its outcomes.
 
 **Status:** ready-for-agent
 
-**GitLab:** [#69](https://gitlab.nessar.fr/nessar/vac-optimizer/-/work_items/69)
+**Gitea:** [#69](https://gitea.nessar.fr/nessar/vac-optimizer/issues/69)
 
-Source: the agreed Plan Statistics Popup spec for [#3](https://gitlab.nessar.fr/nessar/vac-optimizer/-/issues/3) and [#29](https://gitlab.nessar.fr/nessar/vac-optimizer/-/issues/29), including the clarification that working only one day in a full week is undesirable. Follow the domain glossary and ADRs 0004, 0006, and 0007.
+Source: the agreed Plan Statistics Popup spec for [#3](https://gitea.nessar.fr/nessar/vac-optimizer/issues/3) and [#29](https://gitea.nessar.fr/nessar/vac-optimizer/issues/29), including the clarification that working only one day in a full week is undesirable. Follow the domain glossary and ADRs 0004, 0006, and 0007.
 
 - [ ] Count Monday-to-Sunday calendar weeks whose five Monday-to-Friday dates all lie inside the submitted half-open horizon and that contain exactly one remaining working day after excluding French public holidays, leave placements, and declared non-working days.
 - [ ] Four weekdays off and one remaining workday qualify. Weeks with zero or two remaining workdays do not qualify, including two-workday weeks containing separate one-day work sequences.