fix: improve code quality and enforce stricter linting

- Updated `justfile` to enforce stricter linting by adding `-D warnings` to `cargo clippy`.
- Simplified boolean field initialization in `run_build.rs` by removing redundant field name.
- Replaced `format!` with `to_string` for `package_log` in `mod.rs` to improve code readability and performance.

justfile

@@ -29,7 +29,7 @@ generate:
 
 # lint code (cargo)
 lint:
-    cargo clippy
+    cargo clippy -- -D warnings
 
 # build and install (nix)
 package:

src/service/build/run_build.rs

@@ -286,7 +286,7 @@ pub async fn run(request: Request<BuildRequest>) -> Result<Response<BuildStream>
 
         for package_chunk in package_data.chunks(response_chunks_size) {
             tx.send(Ok(BuildResponse {
-                is_archive: is_archive,
+                is_archive,
                 package_data: package_chunk.to_vec(),
                 package_log: "".to_string(),
             }))

src/service/proxy/package/mod.rs

@@ -265,7 +265,7 @@ pub async fn prepare(
 
     while let Some(chunk) = stream.message().await? {
         tx.send(Ok(PackageResponse {
-            package_log: format!("{}", chunk.source_log),
+            package_log: chunk.source_log.to_string(),
         }))
         .await?;
 
@@ -275,7 +275,7 @@ pub async fn prepare(
     }
 
     tx.send(Ok(PackageResponse {
-        package_log: format!("source id: {}", source_id),
+        package_log: format!("source id: {}", source_id).to_string(),
     }))
     .await?;
 
@@ -339,7 +339,7 @@ pub async fn build(
         let response = build_response?;
 
         tx.send(Ok(PackageResponse {
-            package_log: format!("{}", response.package_log),
+            package_log: response.package_log,
         }))
         .await?;