chore(daemon): remove unused imports and dead placeholders

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/spaceshd/src/persist.rs

@@ -1,12 +1,8 @@
 use std::sync::Arc;
-use std::sync::atomic::{AtomicUsize, Ordering};
 use tokio::sync::mpsc;
 use tokio::time::{Duration, Instant};
 use crate::state_store::{PersistState, StateStore};
 
-/// Debounce window: coalesce a burst of dirty signals into one save.
-const DEBOUNCE: Duration = Duration::from_millis(500);
-
 /// A handle the registry uses to request a persist. `mark_dirty(state)` records
 /// the latest snapshot and (re)arms the debounce timer.
 #[derive(Clone)]
@@ -59,12 +55,10 @@ pub fn spawn(store: Arc<dyn StateStore>, debounce: Duration) -> Persister {
     Persister { tx }
 }
 
-#[allow(dead_code)]
-fn _unused(_c: &AtomicUsize) {}
-
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::sync::atomic::{AtomicUsize, Ordering};
     use std::sync::Mutex;
 
     struct CountingStore {

crates/spaceshd/src/registry.rs

@@ -3,7 +3,6 @@ use std::path::PathBuf;
 use std::sync::atomic::{AtomicU64, Ordering};
 
 use spacesh_proto::ids::{GroupId, SurfaceId, WorkspaceId};
-use spacesh_proto::layout::LayoutNode;
 use spacesh_proto::workspace::{Group, SurfaceSpec, SurfaceView, Workspace, WorkspaceView};
 
 use crate::state_store::PersistState;

crates/spaceshd/src/server.rs

@@ -181,7 +181,7 @@ async fn handle_request(
     exit_tx: &mpsc::UnboundedSender<(SurfaceId, i32)>,
     persister: &Persister,
 ) {
-    use spacesh_proto::message::{SplitDir, Edge};
+    use spacesh_proto::message::SplitDir;
     use spacesh_proto::layout::{LayoutNode, Orient};
     use spacesh_proto::workspace::SurfaceSpec;
 

crates/spaceshd/src/state_store.rs

@@ -1,4 +1,4 @@
-use std::path::{Path, PathBuf};
+use std::path::PathBuf;
 use anyhow::Result;
 use serde::{Deserialize, Serialize};
 use spacesh_proto::workspace::{Group, Workspace};
@@ -69,9 +69,6 @@ impl StateStore for JsonStateStore {
     }
 }
 
-#[allow(dead_code)]
-fn touch(_p: &Path) {}
-
 #[cfg(test)]
 mod tests {
     use super::*;

crates/spaceshd/src/surface.rs

@@ -41,6 +41,7 @@ pub enum SurfaceMsg {
 
 pub struct SurfaceHandle {
     pub id: SurfaceId,
+    #[allow(dead_code)]
     pub workspace_id: WorkspaceId,
     pub tx: mpsc::Sender<SurfaceMsg>,
 }