diff --git a/README.md b/README.md
index c505dbb..fbd8c82 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ Full documentation: [helixnotes.com/docs](https://helixnotes.com/docs.html)
 
 ### Prerequisites
 
-- [Rust](https://rustup.rs/) (1.77+)
+- [Rust](https://rustup.rs/) (1.88+)
 - [Node.js](https://nodejs.org/) (18+)
 - [pnpm](https://pnpm.io/)
 - System dependencies for Tauri: see [Tauri prerequisites](https://v2.tauri.app/start/prerequisites/)
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index cc61f78..a9ba701 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -5,7 +5,11 @@ description = "Local markdown note-taking app"
 authors = ["HelixNotes"]
 license = "AGPL-3.0-or-later"
 edition = "2021"
-rust-version = "1.77.2"
+rust-version = "1.88"
+
+[lints.clippy]
+# This style lint is version-dependent and produces over 100 legacy-only diagnostics on Rust 1.88.
+uninlined_format_args = "allow"
 
 [lib]
 name = "app_lib"
diff --git a/src-tauri/src/commands.rs b/src-tauri/src/commands.rs
index 599e4aa..cbcfe62 100644
--- a/src-tauri/src/commands.rs
+++ b/src-tauri/src/commands.rs
@@ -1691,7 +1691,7 @@ pub fn get_vault_stats(state: State<'_, AppState>) -> Result<VaultStats, String>
         .filter(|p| {
             // attachments under .helixnotes count; nothing else in .helixnotes or .trash does
             let s = p.to_string_lossy();
-            !(s.contains("/.helixnotes/") && !s.contains("/.helixnotes/attachments/"))
+            (!s.contains("/.helixnotes/") || s.contains("/.helixnotes/attachments/"))
                 && !s.contains("/.trash/")
         })
         .collect();
diff --git a/src-tauri/src/image_proxy.rs b/src-tauri/src/image_proxy.rs
index 0f2cef3..c38cc1f 100644
--- a/src-tauri/src/image_proxy.rs
+++ b/src-tauri/src/image_proxy.rs
@@ -141,11 +141,12 @@ fn image_client(host: &str, addresses: &[SocketAddr]) -> Result<Client, ProxyErr
     Client::builder()
         .timeout(Duration::from_secs(30))
         .redirect(Policy::custom(move |attempt| {
+            let redirected_elsewhere = match attempt.url().host_str() {
+                Some(host) => normalized_host(host) != redirect_host,
+                None => true,
+            };
             if attempt.previous().len() >= 5
-                || attempt
-                    .url()
-                    .host_str()
-                    .map_or(true, |host| normalized_host(host) != redirect_host)
+                || redirected_elsewhere
                 || validate_url(attempt.url().as_str()).is_err()
             {
                 attempt.stop()
diff --git a/src-tauri/src/sync.rs b/src-tauri/src/sync.rs
index f830ed4..2855f47 100644
--- a/src-tauri/src/sync.rs
+++ b/src-tauri/src/sync.rs
@@ -528,8 +528,14 @@ fn apply_changes(
 
         match (l, r) {
             (Some(lf), Some(re)) => {
-                let local_changed = m.map_or(true, |me| me.local_hash != lf.hash);
-                let remote_changed = m.map_or(true, |me| &me.remote_etag != re);
+                let local_changed = match m {
+                    Some(entry) => entry.local_hash != lf.hash,
+                    None => true,
+                };
+                let remote_changed = match m {
+                    Some(entry) => &entry.remote_etag != re,
+                    None => true,
+                };
                 if !local_changed && !remote_changed {
                     new_m.files.insert(
                         key.clone(),
diff --git a/src-tauri/src/vault/import.rs b/src-tauri/src/vault/import.rs
index 9f840ec..a9b41a8 100644
--- a/src-tauri/src/vault/import.rs
+++ b/src-tauri/src/vault/import.rs
@@ -251,10 +251,8 @@ fn rename_deprecated_properties(raw: &str) -> String {
                 mapping.insert(new_key, val);
                 renamed = true;
             }
-        } else {
-            if mapping.remove(&old_key).is_some() {
-                renamed = true;
-            }
+        } else if mapping.remove(&old_key).is_some() {
+            renamed = true;
         }
     }