diff --git a/app/services/prereq_service.py b/app/services/prereq_service.py
index c020b1b..a2e8993 100644
--- a/app/services/prereq_service.py
+++ b/app/services/prereq_service.py
@@ -23,7 +23,7 @@ def check_prereqs_campaign(db, campaign_id):
     """Verifie les prereqs de tous les serveurs pending d'une campagne."""
     sessions = db.execute(text("""
         SELECT ps.id, s.hostname, s.os_family, s.etat, s.licence_support,
-            s.machine_type, s.satellite_host, s.ssh_method,
+            s.machine_type, s.satellite_url AS satellite_host, s.ssh_method,
             d.code as domain_code, z.name as zone
         FROM patch_sessions ps
         JOIN servers s ON ps.server_id = s.id
@@ -294,7 +294,7 @@ def check_single_prereq(db, session_id):
     """Verifie les prereqs d'un seul serveur"""
     s = db.execute(text("""
         SELECT ps.id, s.hostname, s.os_family, s.etat, s.licence_support,
-            s.machine_type, s.satellite_host, s.ssh_method,
+            s.machine_type, s.satellite_url AS satellite_host, s.ssh_method,
             d.code as domain_code, z.name as zone
         FROM patch_sessions ps
         JOIN servers s ON ps.server_id = s.id
diff --git a/app/templates/partials/server_detail.html b/app/templates/partials/server_detail.html
index a92fd94..8364a41 100644
--- a/app/templates/partials/server_detail.html
+++ b/app/templates/partials/server_detail.html
@@ -72,10 +72,10 @@
             <div class="flex justify-between"><span class="text-gray-500">Owner OS</span><span>{{ s.patch_os_owner }}</span></div>
             <div class="flex justify-between"><span class="text-gray-500">Frequence</span><span>{{ s.patch_frequency }}</span></div>
             <div class="flex justify-between"><span class="text-gray-500">Podman</span><span>{{ 'Oui' if s.is_podman else 'Non' }}</span></div>
-            <div class="flex justify-between"><span class="text-gray-500">Prevenance</span><span>{{ 'Oui' if s.need_pct else 'Non' }}</span></div>
+            <div class="flex justify-between"><span class="text-gray-500">Prevenance PCT</span><span>{{ 'Oui' if s.pct_required else 'Non' }}</span></div>
             <div class="flex justify-between"><span class="text-gray-500">Jour préféré</span><span>{{ s.pref_patch_jour or 'indifférent' }}</span></div>
             <div class="flex justify-between"><span class="text-gray-500">Heure préférée</span><span>{{ s.pref_patch_heure or 'indifférent' }}</span></div>
-            <div class="flex justify-between"><span class="text-gray-500">Satellite</span><span>{% if s.satellite_host %}{% if 'sat1' in s.satellite_host %}SAT1 (DMZ){% elif 'sat2' in s.satellite_host %}SAT2 (LAN){% else %}{{ s.satellite_host }}{% endif %}{% else %}N/A{% endif %}</span></div>
+            <div class="flex justify-between"><span class="text-gray-500">Satellite</span><span>{% if s.satellite_url %}{% if 'sat1' in s.satellite_url %}SAT1 (DMZ){% elif 'sat2' in s.satellite_url %}SAT2 (LAN){% else %}{{ s.satellite_url }}{% endif %}{% else %}N/A{% endif %}</span></div>
         </div>
     </div>
 
diff --git a/migrate_drop_legacy_servers.sql b/migrate_drop_legacy_servers.sql
new file mode 100644
index 0000000..e6460c4
--- /dev/null
+++ b/migrate_drop_legacy_servers.sql
@@ -0,0 +1,135 @@
+-- Migration : suppression des colonnes legacy de servers (consolidées avec les nouvelles)
+--   - snapshot_required → requires_snapshot
+--   - pre_patch_script  → pre_patch_cmd
+--   - post_patch_script → post_patch_cmd
+--   - satellite_host    → satellite_url
+--   - need_pct          → pct_required
+-- ⚠ responsable_nom/email et referent_nom/email sont CONSERVÉS (le backfill
+--   vers responsable_domaine_contact_id / referent_technique_contact_id
+--   nécessite un fuzzy match qui sera fait dans un script séparé).
+-- Idempotent.
+
+\echo '═══ 1. Migration des données legacy → nouvelles ═══'
+
+-- snapshot_required → requires_snapshot (si nouveau pas encore défini)
+UPDATE public.servers
+   SET requires_snapshot = snapshot_required, updated_at = NOW()
+ WHERE requires_snapshot IS NULL
+   AND snapshot_required IS NOT NULL;
+
+-- pre_patch_script → pre_patch_cmd
+UPDATE public.servers
+   SET pre_patch_cmd = pre_patch_script, updated_at = NOW()
+ WHERE pre_patch_cmd IS NULL
+   AND pre_patch_script IS NOT NULL AND pre_patch_script != '';
+
+-- post_patch_script → post_patch_cmd
+UPDATE public.servers
+   SET post_patch_cmd = post_patch_script, updated_at = NOW()
+ WHERE post_patch_cmd IS NULL
+   AND post_patch_script IS NOT NULL AND post_patch_script != '';
+
+-- satellite_host → satellite_url (si vide)
+UPDATE public.servers
+   SET satellite_url = satellite_host, updated_at = NOW()
+ WHERE (satellite_url IS NULL OR satellite_url = '')
+   AND satellite_host IS NOT NULL AND satellite_host != '';
+
+-- need_pct → pct_required (si nouveau false / NULL et legacy true)
+UPDATE public.servers
+   SET pct_required = need_pct, updated_at = NOW()
+ WHERE need_pct = true
+   AND (pct_required IS NULL OR pct_required = false);
+
+\echo '═══ 2. Drop des views qui dépendent ═══'
+
+DROP VIEW IF EXISTS public.v_patchable;
+DROP VIEW IF EXISTS public.v_servers;
+DROP VIEW IF EXISTS public.v_conformity_todo;
+
+\echo '═══ 3. Drop des colonnes legacy ═══'
+
+ALTER TABLE public.servers
+    DROP COLUMN IF EXISTS snapshot_required,
+    DROP COLUMN IF EXISTS pre_patch_script,
+    DROP COLUMN IF EXISTS post_patch_script,
+    DROP COLUMN IF EXISTS satellite_host,
+    DROP COLUMN IF EXISTS need_pct;
+
+\echo '═══ 4. Recréation des views avec les nouveaux noms ═══'
+
+CREATE OR REPLACE VIEW public.v_servers AS
+ SELECT s.id,
+    s.hostname,
+    s.fqdn,
+    s.domain_ltd,
+    d.name AS domaine,
+    d.code AS domaine_code,
+    e.name AS environnement,
+    e.code AS env_code,
+    z.name AS zone_reseau,
+    s.os_family,
+    s.os_version,
+    s.machine_type,
+    s.tier,
+    s.etat,
+    s.licence_support,
+    s.is_bdd,
+    s.is_flux_libre,
+    s.is_emv,
+    s.is_podman,
+    s.pct_required,
+    s.patch_os_owner,
+    COALESCE(s.patch_excludes, de.patch_excludes, d.default_excludes) AS effective_excludes,
+    s.responsable_nom,
+    s.referent_nom,
+    s.ssh_method,
+    s.ssh_user,
+    s.mode_operatoire,
+    s.commentaire,
+    s.satellite_url,
+    s.requires_snapshot,
+    s.snap_can_be_skipped,
+    s.cluster_id,
+    s.cluster_order
+   FROM public.servers s
+   LEFT JOIN public.domain_environments de ON s.domain_env_id = de.id
+   LEFT JOIN public.domains d ON de.domain_id = d.id
+   LEFT JOIN public.environments e ON de.environment_id = e.id
+   LEFT JOIN public.zones z ON s.zone_id = z.id;
+
+CREATE OR REPLACE VIEW public.v_patchable AS
+ SELECT id, hostname, fqdn, domain_ltd, domaine, domaine_code, environnement,
+        env_code, zone_reseau, os_family, os_version, machine_type, tier, etat,
+        licence_support, is_bdd, is_flux_libre, is_emv, is_podman, pct_required,
+        patch_os_owner, effective_excludes, responsable_nom, referent_nom,
+        ssh_method, ssh_user, mode_operatoire, commentaire, satellite_url,
+        requires_snapshot, snap_can_be_skipped, cluster_id, cluster_order
+   FROM public.v_servers
+  WHERE patch_os_owner::text = 'secops'
+    AND etat::text = 'en_production'
+    AND licence_support::text IN ('active', 'els');
+
+CREATE OR REPLACE VIEW public.v_conformity_todo AS
+ SELECT s.hostname,
+        d.name AS domaine,
+        e.name AS environnement,
+        s.tier,
+        s.patch_os_owner,
+        (s.responsable_nom IS NULL) AS resp_missing
+   FROM public.servers s
+   LEFT JOIN public.domain_environments de ON s.domain_env_id = de.id
+   LEFT JOIN public.domains d ON de.domain_id = d.id
+   LEFT JOIN public.environments e ON de.environment_id = e.id
+  WHERE s.etat::text = 'en_production'
+    AND (s.patch_os_owner::text = 'a_definir' OR s.responsable_nom IS NULL);
+
+\echo '═══ 5. Vérification ═══'
+
+SELECT column_name, data_type
+  FROM information_schema.columns
+ WHERE table_name = 'servers'
+   AND column_name IN ('snapshot_required','pre_patch_script','post_patch_script',
+                       'satellite_host','need_pct')
+ ORDER BY column_name;
+-- Résultat attendu : 0 ligne (toutes les legacy ont été drop)