chore(daemon): remove unused imports and dead placeholders

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

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::*;