diff --git a/k-tv-backend/api/src/dto.rs b/k-tv-backend/api/src/dto.rs
index e182b0b..8b35429 100644
--- a/k-tv-backend/api/src/dto.rs
+++ b/k-tv-backend/api/src/dto.rs
@@ -114,7 +114,7 @@ pub struct UpdateChannelRequest {
     pub description: Option<String>,
     pub timezone: Option<String>,
     /// Replace the entire schedule config (template import/edit)
-    pub schedule_config: Option<domain::ScheduleConfig>,
+    pub schedule_config: Option<domain::ScheduleConfigCompat>,
     pub recycle_policy: Option<domain::RecyclePolicy>,
     pub auto_schedule: Option<bool>,
     pub access_mode: Option<domain::AccessMode>,
diff --git a/k-tv-backend/api/src/poller.rs b/k-tv-backend/api/src/poller.rs
index 0867cf7..17ae9f5 100644
--- a/k-tv-backend/api/src/poller.rs
+++ b/k-tv-backend/api/src/poller.rs
@@ -172,6 +172,10 @@ mod tests {
         async fn delete(&self, _id: ChannelId) -> DomainResult<()> {
             unimplemented!()
         }
+        async fn save_config_snapshot(&self, _channel_id: ChannelId, _config: &domain::ScheduleConfig, _label: Option<String>) -> DomainResult<domain::ChannelConfigSnapshot> { unimplemented!() }
+        async fn list_config_snapshots(&self, _channel_id: ChannelId) -> DomainResult<Vec<domain::ChannelConfigSnapshot>> { unimplemented!() }
+        async fn get_config_snapshot(&self, _channel_id: ChannelId, _snapshot_id: Uuid) -> DomainResult<Option<domain::ChannelConfigSnapshot>> { unimplemented!() }
+        async fn patch_config_snapshot_label(&self, _channel_id: ChannelId, _snapshot_id: Uuid, _label: Option<String>) -> DomainResult<Option<domain::ChannelConfigSnapshot>> { unimplemented!() }
     }
 
     struct MockScheduleRepo {
@@ -213,6 +217,9 @@ mod tests {
         ) -> DomainResult<HashMap<BlockId, MediaItemId>> {
             Ok(HashMap::new())
         }
+        async fn list_schedule_history(&self, _channel_id: ChannelId) -> DomainResult<Vec<GeneratedSchedule>> { unimplemented!() }
+        async fn get_schedule_by_id(&self, _channel_id: ChannelId, _schedule_id: Uuid) -> DomainResult<Option<GeneratedSchedule>> { unimplemented!() }
+        async fn delete_schedules_after(&self, _channel_id: ChannelId, _target_generation: u32) -> DomainResult<()> { unimplemented!() }
     }
 
     struct MockRegistry;
@@ -437,6 +444,9 @@ mod tests {
             ) -> DomainResult<HashMap<BlockId, MediaItemId>> {
                 Ok(HashMap::new())
             }
+            async fn list_schedule_history(&self, _: ChannelId) -> DomainResult<Vec<GeneratedSchedule>> { unimplemented!() }
+            async fn get_schedule_by_id(&self, _: ChannelId, _: Uuid) -> DomainResult<Option<GeneratedSchedule>> { unimplemented!() }
+            async fn delete_schedules_after(&self, _: ChannelId, _: u32) -> DomainResult<()> { unimplemented!() }
         }
 
         let now = Utc::now();
diff --git a/k-tv-backend/api/src/routes/channels/crud.rs b/k-tv-backend/api/src/routes/channels/crud.rs
index 5201d4a..7cd34d0 100644
--- a/k-tv-backend/api/src/routes/channels/crud.rs
+++ b/k-tv-backend/api/src/routes/channels/crud.rs
@@ -102,7 +102,7 @@ pub(super) async fn update_channel(
         channel.timezone = tz;
     }
     if let Some(sc) = payload.schedule_config {
-        channel.schedule_config = sc;
+        channel.schedule_config = domain::ScheduleConfig::from(sc);
     }
     if let Some(rp) = payload.recycle_policy {
         channel.recycle_policy = rp;
diff --git a/k-tv-backend/api/src/routes/channels/schedule.rs b/k-tv-backend/api/src/routes/channels/schedule.rs
index dc57dc8..a8b0bc6 100644
--- a/k-tv-backend/api/src/routes/channels/schedule.rs
+++ b/k-tv-backend/api/src/routes/channels/schedule.rs
@@ -18,7 +18,7 @@ use crate::{
 
 use super::require_owner;
 
-/// Trigger 48-hour schedule generation for a channel, starting from now.
+/// Trigger 7-day schedule generation for a channel, starting from now.
 /// Replaces any existing schedule for the same window.
 pub(super) async fn generate_schedule(
     State(state): State<AppState>,
@@ -42,7 +42,7 @@ pub(super) async fn generate_schedule(
     Ok((StatusCode::CREATED, Json(ScheduleResponse::from(schedule))))
 }
 
-/// Return the currently active 48-hour schedule for a channel.
+/// Return the currently active 7-day schedule for a channel.
 /// 404 if no schedule has been generated yet — call POST /:id/schedule first.
 pub(super) async fn get_active_schedule(
     State(state): State<AppState>,
diff --git a/k-tv-backend/api/src/scheduler.rs b/k-tv-backend/api/src/scheduler.rs
index 6a7bda7..4eb7f54 100644
--- a/k-tv-backend/api/src/scheduler.rs
+++ b/k-tv-backend/api/src/scheduler.rs
@@ -127,6 +127,10 @@ mod tests {
         async fn delete(&self, _id: ChannelId) -> DomainResult<()> {
             unimplemented!()
         }
+        async fn save_config_snapshot(&self, _channel_id: ChannelId, _config: &domain::ScheduleConfig, _label: Option<String>) -> DomainResult<domain::ChannelConfigSnapshot> { unimplemented!() }
+        async fn list_config_snapshots(&self, _channel_id: ChannelId) -> DomainResult<Vec<domain::ChannelConfigSnapshot>> { unimplemented!() }
+        async fn get_config_snapshot(&self, _channel_id: ChannelId, _snapshot_id: Uuid) -> DomainResult<Option<domain::ChannelConfigSnapshot>> { unimplemented!() }
+        async fn patch_config_snapshot_label(&self, _channel_id: ChannelId, _snapshot_id: Uuid, _label: Option<String>) -> DomainResult<Option<domain::ChannelConfigSnapshot>> { unimplemented!() }
     }
 
     struct MockScheduleRepo {
@@ -168,6 +172,9 @@ mod tests {
         ) -> DomainResult<HashMap<BlockId, MediaItemId>> {
             Ok(HashMap::new())
         }
+        async fn list_schedule_history(&self, _channel_id: ChannelId) -> DomainResult<Vec<GeneratedSchedule>> { unimplemented!() }
+        async fn get_schedule_by_id(&self, _channel_id: ChannelId, _schedule_id: Uuid) -> DomainResult<Option<GeneratedSchedule>> { unimplemented!() }
+        async fn delete_schedules_after(&self, _channel_id: ChannelId, _target_generation: u32) -> DomainResult<()> { unimplemented!() }
     }
 
     struct MockRegistry;