release: squash merge develop → master

Quotidien / Epic C : feed bulles parent (#173), module Cartes (#194/#195),
evenements_agenda (#205), couples garde AM (#169–#171), API absences (#172).

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/2026_am_placement_garde_courant.sql

@@ -0,0 +1,10 @@
+-- Ticket #171 — Couple de garde courant (préférence AM)
+-- Idempotent : safe à rejouer.
+
+ALTER TABLE assistantes_maternelles
+  ADD COLUMN IF NOT EXISTS id_placement_garde_courant UUID
+    REFERENCES enfants_assistantes_maternelles(id) ON DELETE SET NULL;
+
+CREATE INDEX IF NOT EXISTS idx_am_placement_garde_courant
+  ON assistantes_maternelles(id_placement_garde_courant)
+  WHERE id_placement_garde_courant IS NOT NULL;