diff --git a/justfile b/justfile
index e8b71e2..33f40e3 100644
--- a/justfile
+++ b/justfile
@@ -6,6 +6,12 @@ build:
 up profile:
     devenv up --profile {{profile}}
 
+vm command:
+    scripts/vm.sh {{command}}
+    
+redeploy:
+    scripts/vm.sh redeploy
+
 e2e:
     scripts/e2e/run.sh
 
diff --git a/src/music/metadata.rs b/src/music/metadata.rs
index 0a2c169..ef752bb 100644
--- a/src/music/metadata.rs
+++ b/src/music/metadata.rs
@@ -1,6 +1,6 @@
 use symphonia::core::meta::{MetadataRevision, StandardTagKey};
 
-#[derive(Debug, Default, Clone)]
+#[derive(Debug, Default, Clone, PartialEq, Eq)]
 pub struct MusicMetadata {
     pub artist: Vec<String>,
     pub album_artist: Option<String>,
diff --git a/src/origins/network/mod.rs b/src/origins/network/mod.rs
index fb1fd62..15b716e 100644
--- a/src/origins/network/mod.rs
+++ b/src/origins/network/mod.rs
@@ -115,6 +115,7 @@ impl NetworkOrigin {
                 io_err(e)
             })?
             .into_iter()
+            .filter(|m| m.file_type == "file")
             .map(|m| (m.inode as u64, m.hash as u64))
             .collect();
 
diff --git a/src/origins/network/watcher.rs b/src/origins/network/watcher.rs
index 66b7ba6..3dc8ef1 100644
--- a/src/origins/network/watcher.rs
+++ b/src/origins/network/watcher.rs
@@ -132,6 +132,7 @@ impl WatcherState {
             .all(&self.client)
             .await?
             .into_iter()
+            .filter(|m| m.file_type == "file")
             .map(|m| (m.inode as u64, m.hash as u64))
             .collect();
 
diff --git a/src/server/state.rs b/src/server/state.rs
index 6c05da0..cc7c735 100644
--- a/src/server/state.rs
+++ b/src/server/state.rs
@@ -15,7 +15,7 @@ use tracing::info;
 
 /// Server-side entry for one file. Built once on startup from a directory
 /// scan and refreshed by the watcher on inotify events.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub struct FileEntry {
     pub abs_path: PathBuf,
     pub rel_path: String,
@@ -37,16 +37,17 @@ impl ServerState {
 
     /// Replace the entire map with a fresh scan of `source`. Used on startup
     /// and on watcher-driven reconciliations.
-    pub fn replace_all(&self, source: &Path) -> io::Result<()> {
+    pub fn replace_all(&self, source: &Path) -> io::Result<bool> {
         let entries = scan_directory(source)?;
-        let count = entries.len();
+        let new_map: HashMap<u64, FileEntry> = entries.into_iter().collect();
         let mut map = self.inner.lock().unwrap();
-        map.clear();
-        for (id, entry) in entries {
-            map.insert(id, entry);
+        if *map == new_map {
+            return Ok(false);
         }
-        info!(count, "server state: scan complete");
-        return Ok(());
+        let count = new_map.len();
+        *map = new_map;
+        info!(count, "server state: scan complete (changed)");
+        return Ok(true);
     }
 
     /// Snapshot the current state into a manifest. Order is by inode ascending
@@ -179,4 +180,81 @@ mod tests {
         state.replace_all(source).unwrap();
         assert_eq!(state.manifest().len(), 0);
     }
+
+    #[test]
+    fn replace_all_returns_true_on_first_scan() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("a.txt"), b"x").unwrap();
+
+        let state = ServerState::new();
+        assert!(state.replace_all(source).unwrap());
+    }
+
+    #[test]
+    fn replace_all_returns_false_when_unchanged() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("a.txt"), b"hello").unwrap();
+        fs::write(source.join("b.txt"), b"world").unwrap();
+
+        let state = ServerState::new();
+        state.replace_all(source).unwrap();
+        assert!(!state.replace_all(source).unwrap());
+    }
+
+    #[test]
+    fn replace_all_returns_true_after_file_added() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("a.txt"), b"x").unwrap();
+
+        let state = ServerState::new();
+        state.replace_all(source).unwrap();
+
+        fs::write(source.join("b.txt"), b"y").unwrap();
+        assert!(state.replace_all(source).unwrap());
+    }
+
+    #[test]
+    fn replace_all_returns_true_after_file_removed() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("a.txt"), b"x").unwrap();
+        fs::write(source.join("b.txt"), b"y").unwrap();
+
+        let state = ServerState::new();
+        state.replace_all(source).unwrap();
+
+        fs::remove_file(source.join("a.txt")).unwrap();
+        assert!(state.replace_all(source).unwrap());
+    }
+
+    #[test]
+    fn replace_all_returns_true_after_file_renamed() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("old.txt"), b"x").unwrap();
+
+        let state = ServerState::new();
+        state.replace_all(source).unwrap();
+        assert!(!state.replace_all(source).unwrap());
+
+        fs::rename(source.join("old.txt"), source.join("new.txt")).unwrap();
+        assert!(state.replace_all(source).unwrap());
+    }
+
+    #[test]
+    fn replace_all_returns_true_after_content_modified() {
+        let tmp = tempfile::tempdir().unwrap();
+        let source = tmp.path();
+        fs::write(source.join("a.txt"), b"original").unwrap();
+
+        let state = ServerState::new();
+        state.replace_all(source).unwrap();
+        assert!(!state.replace_all(source).unwrap());
+
+        fs::write(source.join("a.txt"), b"modified content").unwrap();
+        assert!(state.replace_all(source).unwrap());
+    }
 }
diff --git a/src/server/watcher.rs b/src/server/watcher.rs
index dc17f3d..d3e3ae9 100644
--- a/src/server/watcher.rs
+++ b/src/server/watcher.rs
@@ -90,25 +90,29 @@ fn run_watcher_loop(
                             EventKind::Remove(_) => ChangeKind::Remove,
                             _ => continue,
                         };
-                        if let Err(e) = state.replace_all(&source) {
-                            error!(error = %e, "server watcher: state refresh failed");
-                            continue;
+                        match state.replace_all(&source) {
+                            Ok(true) => {
+                                let _ = events_tx.send(ChangeEvent { kind });
+                            }
+                            Ok(false) => {}
+                            Err(e) => {
+                                error!(error = %e, "server watcher: state refresh failed");
+                            }
                         }
-                        let _ = events_tx.send(ChangeEvent { kind });
                     }
                     _ => {}
                 },
                 Err(e) => error!(error = %e, "server watcher: inotify error"),
             },
-            Err(std::sync::mpsc::RecvTimeoutError::Timeout) => {
-                if let Err(e) = state.replace_all(&source) {
-                    error!(error = %e, "server watcher: poll rescan failed");
-                    continue;
+            Err(std::sync::mpsc::RecvTimeoutError::Timeout) => match state.replace_all(&source) {
+                Ok(true) => {
+                    let _ = events_tx.send(ChangeEvent {
+                        kind: ChangeKind::Modify,
+                    });
                 }
-                let _ = events_tx.send(ChangeEvent {
-                    kind: ChangeKind::Modify,
-                });
-            }
+                Ok(false) => {}
+                Err(e) => error!(error = %e, "server watcher: poll rescan failed"),
+            },
             Err(std::sync::mpsc::RecvTimeoutError::Disconnected) => break,
         }
     }