refactor(domain): Row structs for from_persistence, ID newtypes, kill clippy.toml

- delete clippy.toml (too-many-arguments-threshold=20 hack)
- ChannelRow/MediaItemRow/LibraryItemRow structs for from_persistence
- SnapshotId/ActivityEventId/PlaybackRecordId newtypes
- DomainError variants use ChannelId/UserId instead of Uuid
- ActivityEvent.channel_id: Option<ChannelId> not Option<Uuid>
- InMemory repos key on newtype IDs
- AlgorithmicParams struct for schedule engine
- update all adapters/application/presentation callers

crates/domain/src/errors/mod.rs

@@ -1,20 +1,21 @@
 use thiserror::Error;
-use uuid::Uuid;
+
+use crate::value_objects::{ChannelId, UserId};
 
 #[derive(Debug, Error)]
 #[non_exhaustive]
 pub enum DomainError {
     #[error("User not found: {0}")]
-    UserNotFound(Uuid),
+    UserNotFound(UserId),
 
     #[error("User already exists: {0}")]
     UserAlreadyExists(String),
 
     #[error("Channel not found: {0}")]
-    ChannelNotFound(Uuid),
+    ChannelNotFound(ChannelId),
 
     #[error("No active schedule for channel: {0}")]
-    NoActiveSchedule(Uuid),
+    NoActiveSchedule(ChannelId),
 
     #[error("Validation error: {0}")]
     ValidationError(String),