chore: apply cargo fmt + clippy cleanup across crate

Silence forward-looking dead_code on unused DAO modules, annotate
individual placeholder items, rewrite tautological assert!(true/false)
in token tests as panic! arms, and pick up fmt drift.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ai/handlers.rs

@@ -503,7 +503,10 @@ pub async fn export_training_data_handler(
 
             HttpResponse::Ok()
                 .content_type("application/jsonl")
-                .insert_header(("Content-Disposition", "attachment; filename=\"training_data.jsonl\""))
+                .insert_header((
+                    "Content-Disposition",
+                    "attachment; filename=\"training_data.jsonl\"",
+                ))
                 .body(jsonl)
         }
         Err(e) => {

src/ai/insight_generator.rs

@@ -1827,8 +1827,9 @@ Return ONLY the summary, nothing else."#,
 
         // For each linked entity, fetch its facts
         for entity_id in entity_ids {
-            if let Ok(entity) = kdao.get_entity_by_id(cx, entity_id) {
+            if let Ok(entity) = kdao.get_entity_by_id(cx, entity_id)
-                if let Some(e) = entity {
+                && let Some(e) = entity
+            {
                 let role = links
                     .iter()
                     .find(|l| l.entity_id == entity_id)
@@ -1856,7 +1857,6 @@ Return ONLY the summary, nothing else."#,
                 }
             }
         }
-        }
 
         if output_lines.is_empty() {
             "No active knowledge facts found for this photo.".to_string()
@@ -1902,8 +1902,8 @@ Return ONLY the summary, nothing else."#,
         // those already). Results are appended to the tool response so the
         // model can choose to use an existing entity's ID instead.
         let similar_entities: Vec<String> = {
+            use crate::database::EntityFilter;
             use crate::database::knowledge_dao::normalize_entity_type;
-            use crate::database::{EntityFilter, KnowledgeDao};
             let normalised_type = normalize_entity_type(&entity_type);
             let first_token = name.split_whitespace().next().unwrap_or(&name).to_string();
             let filter = EntityFilter {

src/ai/ollama.rs

@@ -120,6 +120,7 @@ impl OllamaClient {
 
     /// Replace the HTTP client with one using a custom request timeout.
     /// Useful for slow models where the default 120s may be insufficient.
+    #[allow(dead_code)]
     pub fn with_request_timeout(mut self, secs: u64) -> Self {
         self.client = Client::builder()
             .connect_timeout(Duration::from_secs(5))
@@ -174,6 +175,7 @@ impl OllamaClient {
     }
 
     /// Clear the model list cache for a specific URL or all URLs
+    #[allow(dead_code)]
     pub fn clear_model_cache(url: Option<&str>) {
         let mut cache = MODEL_LIST_CACHE.lock().unwrap();
         if let Some(url) = url {
@@ -186,6 +188,7 @@ impl OllamaClient {
     }
 
     /// Clear the model capabilities cache for a specific URL or all URLs
+    #[allow(dead_code)]
     pub fn clear_capabilities_cache(url: Option<&str>) {
         let mut cache = MODEL_CAPABILITIES_CACHE.lock().unwrap();
         if let Some(url) = url {
@@ -992,7 +995,6 @@ struct OllamaEmbedResponse {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
 
     #[test]
     fn generate_photo_description_prompt_is_concise() {

src/bin/backfill_hashes.rs

@@ -68,8 +68,7 @@ fn main() -> anyhow::Result<()> {
             .join(", ")
     );
 
-    let dao: Arc<Mutex<Box<dyn ExifDao>>> =
+    let dao: Arc<Mutex<Box<dyn ExifDao>>> = Arc::new(Mutex::new(Box::new(SqliteExifDao::new())));
-        Arc::new(Mutex::new(Box::new(SqliteExifDao::new())));
     let ctx = opentelemetry::Context::new();
 
     let mut total_hashed = 0u64;
@@ -98,15 +97,13 @@ fn main() -> anyhow::Result<()> {
                     .get(&library_id)
                     .map(|lib| Path::new(&lib.root_path).join(&rel_path));
                 match abs {
-                    Some(abs_path) if abs_path.exists() => {
+                    Some(abs_path) if abs_path.exists() => match content_hash::compute(&abs_path) {
-                        match content_hash::compute(&abs_path) {
                         Ok(id) => (library_id, rel_path, Some(id)),
                         Err(e) => {
                             eprintln!("hash error for {}: {:?}", abs_path.display(), e);
                             (library_id, rel_path, None)
                         }
-                        }
+                    },
-                    }
                     Some(_) => (library_id, rel_path, None), // file missing on disk
                     None => {
                         eprintln!("Row refers to unknown library_id {}", library_id);

src/content_hash.rs

@@ -53,13 +53,18 @@ pub fn thumbnail_path(thumbs_dir: &Path, hash: &str) -> PathBuf {
 /// Hash-keyed HLS output directory: `<video_dir>/<hash[..2]>/<hash>/`.
 /// The playlist lives at `playlist.m3u8` inside this directory and its
 /// segments are co-located so HLS relative references Just Work.
+#[allow(dead_code)]
 pub fn hls_dir(video_dir: &Path, hash: &str) -> PathBuf {
     let shard = shard_prefix(hash);
     video_dir.join(shard).join(hash)
 }
 
 fn shard_prefix(hash: &str) -> &str {
-    let end = hash.char_indices().nth(2).map(|(i, _)| i).unwrap_or(hash.len());
+    let end = hash
+        .char_indices()
+        .nth(2)
+        .map(|(i, _)| i)
+        .unwrap_or(hash.len());
     &hash[..end]
 }
 

src/data/mod.rs

@@ -191,6 +191,7 @@ pub struct ThumbnailRequest {
     #[allow(dead_code)] // Part of API contract, may be used in future
     pub(crate) format: Option<ThumbnailFormat>,
     #[serde(default)]
+    #[allow(dead_code)] // Part of API contract, may be used in future
     pub(crate) shape: Option<ThumbnailShape>,
     /// Optional library filter. Accepts a library id (e.g. "1") or name
     /// (e.g. "main"). When omitted, defaults to the primary library.
@@ -434,11 +435,8 @@ mod tests {
         );
 
         match err.unwrap_err().into_kind() {
-            ErrorKind::ExpiredSignature => assert!(true),
+            ErrorKind::ExpiredSignature => {}
-            kind => {
+            kind => panic!("Unexpected error: {:?}", kind),
-                println!("Unexpected error: {:?}", kind);
-                assert!(false)
-            }
         }
     }
 
@@ -447,11 +445,8 @@ mod tests {
         let err = Claims::from_str("uni-֍ՓՓՓՓՓՓՓՓՓՓՓՓՓՓՓ");
 
         match err.unwrap_err().into_kind() {
-            ErrorKind::InvalidToken => assert!(true),
+            ErrorKind::InvalidToken => {}
-            kind => {
+            kind => panic!("Unexpected error: {:?}", kind),
-                println!("Unexpected error: {:?}", kind);
-                assert!(false)
-            }
         }
     }
 

src/database/calendar_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
 use serde::Serialize;

src/database/daily_summary_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use chrono::NaiveDate;
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;

src/database/insights_dao.rs

@@ -31,6 +31,7 @@ pub trait InsightDao: Sync + Send {
         paths: &[String],
     ) -> Result<Option<PhotoInsight>, DbError>;
 
+    #[allow(dead_code)]
     fn get_insight_history(
         &mut self,
         context: &opentelemetry::Context,
@@ -79,6 +80,7 @@ impl SqliteInsightDao {
     }
 
     #[cfg(test)]
+    #[allow(dead_code)]
     pub fn from_connection(conn: Arc<Mutex<SqliteConnection>>) -> Self {
         SqliteInsightDao { connection: conn }
     }

src/database/knowledge_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
 use std::ops::DerefMut;
@@ -230,7 +232,7 @@ impl SqliteKnowledgeDao {
     }
 
     fn deserialize_embedding(bytes: &[u8]) -> Result<Vec<f32>, DbError> {
-        if bytes.len() % 4 != 0 {
+        if !bytes.len().is_multiple_of(4) {
             return Err(DbError::new(DbErrorKind::QueryError));
         }
         Ok(bytes
@@ -535,7 +537,6 @@ impl KnowledgeDao for SqliteKnowledgeDao {
 
             conn.transaction::<(i64, i64), diesel::result::Error, _>(|conn| {
                 use schema::entity_facts::dsl as ef;
-                use schema::entity_photo_links::dsl as epl;
 
                 // 1. Re-point facts where source is subject
                 let facts_updated =

src/database/location_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
 use serde::Serialize;

src/database/mod.rs

@@ -155,7 +155,9 @@ pub trait FavoriteDao: Sync + Send {
     fn add_favorite(&mut self, user_id: i32, favorite_path: &str) -> Result<usize, DbError>;
     fn remove_favorite(&mut self, user_id: i32, favorite_path: String);
     fn get_favorites(&mut self, user_id: i32) -> Result<Vec<Favorite>, DbError>;
+    #[allow(dead_code)]
     fn update_path(&mut self, old_path: &str, new_path: &str) -> Result<(), DbError>;
+    #[allow(dead_code)]
     fn get_all_paths(&mut self) -> Result<Vec<String>, DbError>;
 }
 
@@ -239,6 +241,7 @@ impl FavoriteDao for SqliteFavoriteDao {
     }
 }
 
+#[allow(dead_code)]
 pub trait ExifDao: Sync + Send {
     fn store_exif(
         &mut self,
@@ -306,6 +309,7 @@ pub trait ExifDao: Sync + Send {
 
     /// Get all photos with GPS coordinates
     /// Returns Vec<(file_path, latitude, longitude, date_taken)>
+    #[allow(clippy::type_complexity)]
     fn get_all_with_gps(
         &mut self,
         context: &opentelemetry::Context,
@@ -680,7 +684,6 @@ impl ExifDao for SqliteExifDao {
         .map_err(|_| DbError::new(DbErrorKind::QueryError))
     }
 
-
     fn get_all_with_gps(
         &mut self,
         context: &opentelemetry::Context,

src/database/preview_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
 use std::ops::DerefMut;

src/database/search_dao.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 use diesel::prelude::*;
 use diesel::sqlite::SqliteConnection;
 use serde::Serialize;

src/files.rs

@@ -16,7 +16,6 @@ use crate::file_types;
 use crate::geo::{gps_bounding_box, haversine_distance};
 use crate::memories::extract_date_from_filename;
 use crate::{AppState, create_thumbnails};
-use actix_web::dev::ResourcePath;
 use actix_web::web::Data;
 use actix_web::{
     HttpRequest, HttpResponse,
@@ -1242,6 +1241,7 @@ mod tests {
     }
 
     impl FakeFileSystem {
+        #[allow(dead_code)]
         fn with_error() -> FakeFileSystem {
             FakeFileSystem {
                 files: HashMap::new(),

src/lib.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::too_many_arguments)]
+
 #[macro_use]
 extern crate diesel;
 

src/libraries.rs

@@ -32,6 +32,7 @@ impl Library {
     /// Resolve a library-relative path into an absolute `PathBuf` under the
     /// library root. Does not validate traversal — use `is_valid_full_path`
     /// for untrusted input.
+    #[allow(dead_code)]
     pub fn resolve(&self, rel_path: &str) -> PathBuf {
         Path::new(&self.root_path).join(rel_path)
     }
@@ -39,6 +40,7 @@ impl Library {
     /// Inverse of `resolve`: given an absolute path under this library's
     /// root, return the root-relative portion. Returns `None` if the path
     /// is not under the library.
+    #[allow(dead_code)]
     pub fn strip_root(&self, abs_path: &Path) -> Option<String> {
         abs_path
             .strip_prefix(&self.root_path)
@@ -99,10 +101,7 @@ pub fn seed_or_patch_from_env(conn: &mut SqliteConnection, base_path: &str) {
 
     // If no rows exist at all (e.g. table created outside the seeded migration),
     // insert a primary library pointing at BASE_PATH.
-    let total: i64 = libraries::table
+    let total: i64 = libraries::table.count().get_result(conn).unwrap_or(0);
-        .count()
-        .get_result(conn)
-        .unwrap_or(0);
     if total == 0 {
         let now = Utc::now().timestamp();
         let result = diesel::insert_into(libraries::table)
@@ -113,7 +112,10 @@ pub fn seed_or_patch_from_env(conn: &mut SqliteConnection, base_path: &str) {
             })
             .execute(conn);
         match result {
-            Ok(_) => info!("Seeded primary library 'main' with BASE_PATH='{}'", base_path),
+            Ok(_) => info!(
+                "Seeded primary library 'main' with BASE_PATH='{}'",
+                base_path
+            ),
             Err(e) => warn!("Failed to seed primary library: {:?}", e),
         }
     }

src/main.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::too_many_arguments)]
+
 #[macro_use]
 extern crate diesel;
 extern crate rayon;

src/memories.rs

@@ -539,10 +539,7 @@ pub async fn list_memories(
     // Resolve the optional library filter. Unknown values are a 400; None
     // means "all libraries" — currently equivalent to the primary library
     // while only one is configured.
-    let library = match crate::libraries::resolve_library_param(
+    let library = match crate::libraries::resolve_library_param(&app_state, q.library.as_deref()) {
-        &app_state,
-        q.library.as_deref(),
-    ) {
         Ok(lib) => lib,
         Err(msg) => {
             warn!("Rejecting /memories request: {}", msg);
@@ -823,7 +820,7 @@ mod tests {
 
         // Verify timestamp is within expected range (should be around 1422489671)
         let timestamp = date_time.timestamp();
-        assert!(timestamp >= 1422480000 && timestamp <= 1422576000); // Jan 28-29, 2015
+        assert!((1422480000..=1422576000).contains(&timestamp)); // Jan 28-29, 2015
     }
 
     #[test]
@@ -841,7 +838,7 @@ mod tests {
 
         // Verify timestamp is within expected range (should be around 1422489664)
         let timestamp = date_time.timestamp();
-        assert!(timestamp >= 1422480000 && timestamp <= 1422576000); // Jan 28-29, 2015
+        assert!((1422480000..=1422576000).contains(&timestamp)); // Jan 28-29, 2015
     }
 
     #[test]
@@ -1120,7 +1117,7 @@ mod tests {
             .and_utc()
             .timestamp();
 
-        let mut memories_with_dates = vec![
+        let mut memories_with_dates = [
             (
                 MemoryItem {
                     path: "photo1.jpg".to_string(),

src/tags.rs

@@ -342,12 +342,14 @@ pub trait TagDao: Send + Sync {
         exclude_tag_ids: Vec<i32>,
         context: &opentelemetry::Context,
     ) -> anyhow::Result<Vec<FileWithTagCount>>;
+    #[allow(dead_code)]
     fn update_photo_name(
         &mut self,
         old_name: &str,
         new_name: &str,
         context: &opentelemetry::Context,
     ) -> anyhow::Result<()>;
+    #[allow(dead_code)]
     fn get_all_photo_names(
         &mut self,
         context: &opentelemetry::Context,
@@ -364,6 +366,7 @@ pub struct SqliteTagDao {
 }
 
 impl SqliteTagDao {
+    #[allow(dead_code)]
     pub(crate) fn new(connection: Arc<Mutex<SqliteConnection>>) -> Self {
         SqliteTagDao { connection }
     }

src/testhelpers.rs

@@ -14,6 +14,12 @@ pub struct TestUserDao {
     pub user_map: RefCell<Vec<User>>,
 }
 
+impl Default for TestUserDao {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl TestUserDao {
     pub fn new() -> Self {
         Self {
@@ -71,6 +77,12 @@ pub struct TestPreviewDao {
     next_id: StdMutex<i32>,
 }
 
+impl Default for TestPreviewDao {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl TestPreviewDao {
     pub fn new() -> Self {
         Self {

src/video/ffmpeg.rs

@@ -40,7 +40,10 @@ pub struct Ffmpeg;
 
 pub enum GifType {
     Overview,
-    OverviewVideo { duration: u32 },
+    #[allow(dead_code)]
+    OverviewVideo {
+        duration: u32,
+    },
 }
 
 impl Ffmpeg {