chore: use +nightly for cargo fmt and fix pre-commit a just recipes

.clippy.toml

@@ -0,0 +1,17 @@
+# Generated by dev-system/ci
+# Clippy configuration for Rust linting
+
+# Lint level thresholds
+cognitive-complexity-threshold = 25
+type-complexity-threshold = 500
+excessive-nesting-threshold = 5
+
+# Allowed patterns (prevent lints on specific code)
+# allow-expect-in-tests = true
+# allow-unwrap-in-tests = true
+
+# Single-character variable name threshold
+single-char-binding-names-threshold = 4
+
+# Note: Lint configurations belong in Cargo.toml under [lints.clippy] or [workspace.lints.clippy]
+# This file only contains clippy configuration parameters, not lint levels

.pre-commit-config.yaml

@@ -9,8 +9,8 @@ repos:
   - repo: local
     hooks:
       - id: rust-fmt
-        name: Rust formatting (cargo fmt)
-        entry: bash -c 'cargo fmt --all -- --check'
+        name: Rust formatting (cargo +nightly fmt)
+        entry: bash -c 'cargo +nightly fmt --all -- --check'
         language: system
         types: [rust]
         pass_filenames: false

.rustfmt.toml

@@ -1,5 +1,6 @@
 # Generated by dev-system/ci
 # Rustfmt configuration for consistent Rust code formatting
+# Configured for cargo +nightly fmt with advanced features enabled
 
 # Basic formatting options
 edition = "2021"
@@ -8,50 +9,45 @@ hard_tabs = false
 tab_spaces = 4
 newline_style = "Unix"
 
-# Comment formatting
-comment_width = 80
-wrap_comments = true
-
 # Code structure
 use_small_heuristics = "Default"
 
-# Spaces and indentation
-fn_single_line = false
-fn_args_layout = "Tall"
-where_single_line = false
-
-# Match expressions
-match_block_trailing_comma = false
-
 # Imports
 reorder_imports = true
 reorder_modules = true
 remove_nested_parens = true
 group_imports = "StdExternalCrate"
 
+# Match expressions
+match_block_trailing_comma = false
+
 # Chains
 chain_width = 60
-chain_indent = "Block"
 
-# Formatting
-format_strings = true
-format_code_in_doc_comments = false
+# Comment formatting (nightly)
+comment_width = 80
+wrap_comments = true
 normalize_comments = true
 normalize_doc_attributes = true
 
-# Line breaks
-match_arm_blocks = true
-overflow_delimited_expressions = false
-blank_lines_lower_bound = 0
-blank_lines_upper_bound = 1
+# Spaces and indentation (nightly)
+fn_single_line = false
+fn_params_layout = "Tall"
+where_single_line = false
 
-# Performance
-condense_wildcard_imports = false
+# Formatting (nightly)
+format_strings = true
+format_code_in_doc_comments = false
 
-# Spaces
+# Spaces (nightly)
 space_before_colon = false
 space_after_colon = true
 spaces_around_ranges = false
 
-# Stability
-unstable_features = false
+# Line breaks (nightly)
+match_arm_blocks = true
+blank_lines_lower_bound = 0
+blank_lines_upper_bound = 1
+
+# Enable nightly features
+unstable_features = true

clippy.toml

@@ -1,46 +0,0 @@
-# Generated by dev-system/ci
-# Clippy configuration for Rust linting
-
-# Lint level thresholds
-cognitive-complexity-threshold = 25
-type-complexity-threshold = 500
-excessive-nesting-threshold = 5
-
-# Allowed patterns (prevent lints on specific code)
-# allow-expect-in-tests = true
-# allow-unwrap-in-tests = true
-
-# Single-letter lifetime parameters
-single-char-lifetime-names-threshold = 4
-
-# Lint configuration
-[clippy]
-# Additional lints to enable by default
-enable = []
-
-# Specific lint configurations
-[lints]
-# Warn on panics in tests (but allow expect)
-"clippy::panic" = "warn"
-# Warn on todo! and unimplemented! macros
-"clippy::todo" = "warn"
-# Warn on large copies
-"clippy::large-include-file" = "warn"
-
-# These are good practices but not strict requirements
-"clippy::missing-docs-in-crate-items" = "allow"
-"clippy::missing-errors-doc" = "allow"
-
-# Performance lints
-"clippy::perf" = "warn"
-"clippy::single-match" = "warn"
-"clippy::match-bool" = "warn"
-
-# Style lints
-"clippy::style" = "warn"
-"clippy::all" = "warn"
-
-# Pedantic is too strict for production code, so warn only on important ones
-"clippy::pedantic" = "allow"
-"clippy::match-wild-err-arm" = "warn"
-"clippy::or-patterns" = "warn"

justfile

@@ -158,12 +158,12 @@ ci-full:
 # Format all code
 [doc("Format Rust code")]
 fmt:
-    cargo fmt --all
+    @just dev::fmt
 
 # Check formatting
 [doc("Check formatting without modifying")]
 fmt-check:
-    cargo fmt --all -- --check
+    @just dev::fmt-check
 
 # Run clippy linter
 [doc("Run clippy with all warnings denied")]

justfiles/dev.just

@@ -20,12 +20,12 @@ help:
 # Format all code
 [doc("Format all Rust code")]
 fmt:
-    cargo fmt --all
+    cargo +nightly fmt --all
 
 # Check formatting without modifying
 [doc("Check formatting")]
 fmt-check:
-    cargo fmt --all -- --check
+    cargo +nightly fmt --all -- --check
 
 # Lint with clippy
 [doc("Run clippy linter (all targets, all features)")]

src/api/handlers.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 #[cfg(feature = "server")]
 use axum::{
     extract::{Path, State},
@@ -6,7 +8,6 @@ use axum::{
     Json,
 };
 use serde_json::{json, Value};
-use std::sync::Arc;
 
 use super::ApiResponse;
 use crate::core::VaultCore;

src/api/middleware.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 /// API middleware for authentication and authorization
 use axum::{
     extract::{Request, State},
@@ -5,7 +7,6 @@ use axum::{
     middleware::Next,
     response::Response,
 };
-use std::sync::Arc;
 use tracing::{error, warn};
 
 use crate::auth::extract_bearer_token;

src/api/mod.rs

@@ -9,10 +9,9 @@ pub mod middleware;
 #[cfg(feature = "server")]
 pub mod tls;
 
-pub use server::build_router;
-
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
+pub use server::build_router;
 
 /// Standard API response envelope
 #[derive(Debug, Clone, Serialize, Deserialize)]

src/api/server.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 #[cfg(feature = "server")]
 use axum::{
     extract::State,
@@ -6,7 +8,6 @@ use axum::{
     routing::{get, post},
     Json, Router,
 };
-use std::sync::Arc;
 
 use super::handlers;
 use super::{ApiResponse, HealthResponse, SealRequest, SealStatus};
@@ -181,9 +182,10 @@ pub fn build_router(_vault: Arc<VaultCore>) -> Router<()> {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use serde_json::json;
 
+    use super::*;
+
     #[test]
     fn test_api_response_success() {
         let response = ApiResponse::success(json!({"key": "value"}));

src/api/tls.rs

@@ -1,4 +1,3 @@
-use crate::error::{Result, VaultError};
 #[cfg(feature = "server")]
 use std::path::PathBuf;
 
@@ -7,6 +6,8 @@ use rustls::ServerConfig;
 #[cfg(feature = "server")]
 use tokio_rustls::TlsAcceptor;
 
+use crate::error::{Result, VaultError};
+
 /// TLS/mTLS configuration from vault config
 #[derive(Debug, Clone)]
 pub struct TlsConfig {
@@ -57,10 +58,11 @@ impl TlsConfig {
 /// Create a rustls ServerConfig from certificate and key files
 #[cfg(feature = "server")]
 pub fn load_server_config(tls: &TlsConfig) -> Result<ServerConfig> {
-    use rustls::pki_types::CertificateDer;
     use std::fs::File;
     use std::io::BufReader;
 
+    use rustls::pki_types::CertificateDer;
+
     // Validate paths first
     tls.validate()?;
 
@@ -100,11 +102,12 @@ pub fn load_server_config(tls: &TlsConfig) -> Result<ServerConfig> {
 /// Create a rustls ServerConfig with mTLS (client certificate verification)
 #[cfg(feature = "server")]
 pub fn load_server_config_with_mtls(tls: &TlsConfig) -> Result<ServerConfig> {
-    use rustls::pki_types::CertificateDer;
-    use rustls::server::WebPkiClientVerifier;
     use std::fs::File;
     use std::io::BufReader;
 
+    use rustls::pki_types::CertificateDer;
+    use rustls::server::WebPkiClientVerifier;
+
     // Validate paths first
     tls.validate()?;
 
@@ -187,10 +190,12 @@ pub fn create_tls_acceptor(tls: &TlsConfig) -> Result<TlsAcceptor> {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use std::fs;
+
     use tempfile::TempDir;
 
+    use super::*;
+
     fn create_test_cert_and_key(temp_dir: &TempDir) -> (PathBuf, PathBuf) {
         // Create a self-signed certificate for testing
         // Using openssl would require it as a dependency for tests,
@@ -198,7 +203,8 @@ mod tests {
         let cert_path = temp_dir.path().join("cert.pem");
         let key_path = temp_dir.path().join("key.pem");
 
-        // Minimal self-signed cert (created with: openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 365 -nodes)
+        // Minimal self-signed cert (created with: openssl req -x509 -newkey rsa:2048
+        // -keyout key.pem -out cert.pem -days 365 -nodes)
         let cert_content = r#"-----BEGIN CERTIFICATE-----
 MIIDazCCAlOgAwIBAgIUfEYF3nU/nfKYZcKgkX9vZj0VqAAwDQYJKoZIhvcNAQEL
 BQAwRTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM

src/auth/cedar.rs

@@ -1,14 +1,14 @@
 use std::collections::HashMap;
 use std::path::PathBuf;
 
-use crate::error::{AuthError, AuthResult};
-
 #[cfg(feature = "cedar")]
 use {
     cedar_policy::{Authorizer, Entities, PolicySet},
     std::sync::{Arc, RwLock},
 };
 
+use crate::error::{AuthError, AuthResult};
+
 /// Authorization decision result
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum AuthDecision {
@@ -45,35 +45,14 @@ impl CedarEvaluator {
         }
     }
 
-    /// Load policies from the configured directory
-    pub fn load_policies(&self) -> AuthResult<()> {
-        if let Some(dir) = &self.policies_dir {
-            if !dir.exists() {
-                return Err(AuthError::CedarPolicy(format!(
-                    "Policies directory not found: {}",
-                    dir.display()
-                )));
+    /// Helper function to read and validate a single Cedar policy file
+    fn read_cedar_policy_file(path: &std::path::Path) -> AuthResult<Option<(String, String)>> {
+        let is_cedar = path.extension().and_then(|ext| ext.to_str()) == Some("cedar");
+        if !is_cedar {
+            return Ok(None);
         }
 
-            let entries = std::fs::read_dir(dir).map_err(|e| {
-                AuthError::CedarPolicy(format!("Failed to read policies dir: {}", e))
-            })?;
-
-            #[cfg(feature = "cedar")]
-            {
-                use std::str::FromStr;
-
-                let mut all_policies = Vec::new();
-                let mut policy_count = 0;
-
-                for entry in entries {
-                    let entry = entry.map_err(|e| {
-                        AuthError::CedarPolicy(format!("Failed to read policy entry: {}", e))
-                    })?;
-
-                    let path = entry.path();
-                    if path.extension().and_then(|ext| ext.to_str()) == Some("cedar") {
-                        let policy_content = std::fs::read_to_string(&path).map_err(|e| {
+        let policy_content = std::fs::read_to_string(path).map_err(|e| {
             AuthError::CedarPolicy(format!(
                 "Failed to read policy file {}: {}",
                 path.display(),
@@ -81,25 +60,53 @@ impl CedarEvaluator {
             ))
         })?;
 
-                        all_policies.push((path.display().to_string(), policy_content));
-                        policy_count += 1;
-                    }
+        Ok(Some((path.display().to_string(), policy_content)))
     }
 
-                if policy_count == 0 {
+    /// Load policies from the configured directory
+    pub fn load_policies(&self) -> AuthResult<()> {
+        let dir = match &self.policies_dir {
+            Some(d) => d,
+            None => return Ok(()),
+        };
+
+        if !dir.exists() {
+            return Err(AuthError::CedarPolicy(format!(
+                "Policies directory not found: {}",
+                dir.display()
+            )));
+        }
+
+        let entries = std::fs::read_dir(dir)
+            .map_err(|e| AuthError::CedarPolicy(format!("Failed to read policies dir: {}", e)))?;
+
+        #[cfg(feature = "cedar")]
+        {
+            use std::str::FromStr;
+
+            let all_policies: Result<Vec<_>, AuthError> = entries
+                .map(|entry| {
+                    let entry = entry.map_err(|e| {
+                        AuthError::CedarPolicy(format!("Failed to read policy entry: {}", e))
+                    })?;
+                    Self::read_cedar_policy_file(&entry.path())
+                })
+                .collect();
+
+            let all_policies: Vec<_> = all_policies?.into_iter().flatten().collect();
+
+            if all_policies.is_empty() {
                 return Err(AuthError::CedarPolicy(
                     "No Cedar policies found in configured directory".to_string(),
                 ));
             }
 
-                // Combine all policy files
             let combined = all_policies
                 .iter()
                 .map(|(_, content)| content.as_str())
                 .collect::<Vec<_>>()
                 .join("\n");
 
-                // Parse policies from Cedar syntax
             let policy_set = PolicySet::from_str(&combined).map_err(|e| {
                 AuthError::CedarPolicy(format!("Failed to parse Cedar policies: {}", e))
             })?;
@@ -109,34 +116,25 @@ impl CedarEvaluator {
 
         #[cfg(not(feature = "cedar"))]
         {
-                let mut policy_count = 0;
-                for entry in entries {
+            let policy_count: Result<usize, AuthError> = entries
+                .map(|entry| {
                     let entry = entry.map_err(|e| {
                         AuthError::CedarPolicy(format!("Failed to read policy entry: {}", e))
                     })?;
+                    Ok(Self::read_cedar_policy_file(&entry.path())?.is_some() as usize)
+                })
+                .sum();
 
-                    let path = entry.path();
-                    if path.extension().and_then(|ext| ext.to_str()) == Some("cedar") {
-                        let _policy_content = std::fs::read_to_string(&path).map_err(|e| {
-                            AuthError::CedarPolicy(format!(
-                                "Failed to read policy file {}: {}",
-                                path.display(),
-                                e
-                            ))
-                        })?;
-                        policy_count += 1;
-                    }
-                }
-
-                if policy_count == 0 {
+            if policy_count? == 0 {
                 return Err(AuthError::CedarPolicy(
                     "No Cedar policies found in configured directory".to_string(),
                 ));
             }
 
-                // Without cedar feature, we can only validate files exist
-                tracing::warn!("Cedar feature not enabled - policy evaluation will not work. Compile with --features cedar");
-            }
+            tracing::warn!(
+                "Cedar feature not enabled - policy evaluation will not work. Compile with \
+                 --features cedar"
+            );
         }
 
         Ok(())
@@ -195,7 +193,8 @@ impl CedarEvaluator {
     /// - principal: entity making the request (e.g., "user::alice")
     /// - action: action being requested (e.g., "Action::read")
     /// - resource: resource being accessed (e.g., "Secret::database_password")
-    /// - context: additional context for decision (e.g., IP address, MFA status)
+    /// - context: additional context for decision (e.g., IP address, MFA
+    ///   status)
     pub fn evaluate(
         &self,
         principal: &str,
@@ -203,7 +202,8 @@ impl CedarEvaluator {
         resource: &str,
         context: Option<&HashMap<String, String>>,
     ) -> AuthResult<AuthDecision> {
-        // Note: principal, action, resource, context are used in cedar feature, unused without
+        // Note: principal, action, resource, context are used in cedar feature, unused
+        // without
         #[allow(unused_variables)]
         let _ = (principal, action, resource, context);
         #[cfg(feature = "cedar")]
@@ -291,10 +291,12 @@ impl CedarEvaluator {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use std::fs;
+
     use tempfile::TempDir;
 
+    use super::*;
+
     #[test]
     fn test_cedar_evaluator_creation() {
         let evaluator = CedarEvaluator::new(None, None);

src/auth/middleware.rs

@@ -1,3 +1,5 @@
+use std::sync::Arc;
+
 #[cfg(feature = "server")]
 use axum::{
     extract::Request,
@@ -5,7 +7,6 @@ use axum::{
     middleware::Next,
     response::{IntoResponse, Response},
 };
-use std::sync::Arc;
 
 #[cfg(feature = "server")]
 use crate::core::VaultCore;
@@ -59,7 +60,8 @@ impl IntoResponse for TokenValidationError {
 }
 
 #[cfg(feature = "server")]
-/// Middleware for token validation (optional - checks if token is valid when present)
+/// Middleware for token validation (optional - checks if token is valid when
+/// present)
 pub async fn optional_token_validation(
     headers: HeaderMap,
     vault: Arc<VaultCore>,
@@ -81,7 +83,8 @@ pub async fn optional_token_validation(
 }
 
 #[cfg(feature = "server")]
-/// Middleware for mandatory token validation (rejects requests without valid token)
+/// Middleware for mandatory token validation (rejects requests without valid
+/// token)
 pub async fn required_token_validation(
     headers: HeaderMap,
     vault: Arc<VaultCore>,

src/auth/mod.rs

@@ -5,7 +5,6 @@ pub mod token;
 pub mod middleware;
 
 pub use cedar::{AuthDecision, CedarEvaluator};
-pub use token::{Token, TokenManager, TokenMetadata};
-
 #[cfg(feature = "server")]
 pub use middleware::{extract_bearer_token, TokenValidationError};
+pub use token::{Token, TokenManager, TokenMetadata};

src/auth/token.rs

@@ -1,6 +1,7 @@
+use std::sync::Arc;
+
 use chrono::{DateTime, Duration, Utc};
 use serde::{Deserialize, Serialize};
-use std::sync::Arc;
 use uuid::Uuid;
 
 use crate::crypto::CryptoBackend;
@@ -206,16 +207,19 @@ impl TokenManager {
 
         let mut tokens = Vec::new();
         for token_id in token_ids {
-            // Extract token ID from storage key
             let parts: Vec<&str> = token_id.split('/').collect();
-            if let Some(id) = parts.last() {
-                if let Ok(Some(token)) = self.lookup(id).await {
+            let Some(id) = parts.last() else {
+                continue;
+            };
+
+            let Ok(Some(token)) = self.lookup(id).await else {
+                continue;
+            };
+
             if token.metadata.client_id == client_id {
                 tokens.push(token);
             }
         }
-            }
-        }
 
         Ok(tokens)
     }
@@ -223,11 +227,12 @@ impl TokenManager {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, StorageConfig};
     use crate::crypto::CryptoRegistry;
     use crate::storage::StorageRegistry;
-    use tempfile::TempDir;
 
     async fn setup_token_manager() -> Result<(TokenManager, TempDir)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/background/lease_revocation.rs

@@ -1,15 +1,15 @@
-use chrono::Utc;
 use std::collections::VecDeque;
 use std::sync::Arc;
 use std::time::Duration;
+
+use chrono::Utc;
 use tokio::sync::RwLock;
 use tokio::task::JoinHandle;
 
 use crate::error::Result;
-use crate::storage::{Lease, StorageBackend};
-
 #[cfg(test)]
 use crate::error::VaultError;
+use crate::storage::{Lease, StorageBackend};
 
 /// Configuration for lease revocation worker
 #[derive(Debug, Clone)]
@@ -250,10 +250,11 @@ impl LeaseRevocationWorker {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, StorageConfig};
     use crate::storage::StorageRegistry;
-    use tempfile::TempDir;
 
     async fn setup_worker() -> Result<(LeaseRevocationWorker, TempDir)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/cli/client.rs

@@ -1,10 +1,11 @@
 #[cfg(feature = "cli")]
-use crate::error::{Result, VaultError};
-#[cfg(feature = "cli")]
 use reqwest::{Client, Response, StatusCode};
 #[cfg(feature = "cli")]
 use serde_json::{json, Value};
 
+#[cfg(feature = "cli")]
+use crate::error::{Result, VaultError};
+
 #[cfg(feature = "cli")]
 pub struct VaultClient {
     client: Client,

src/cli/mod.rs

@@ -4,11 +4,12 @@ pub mod commands;
 #[cfg(feature = "cli")]
 pub mod client;
 
-#[cfg(feature = "cli")]
-use clap::{Parser, Subcommand};
 #[cfg(feature = "cli")]
 use std::path::PathBuf;
 
+#[cfg(feature = "cli")]
+use clap::{Parser, Subcommand};
+
 #[cfg(feature = "cli")]
 /// SecretumVault CLI - Post-quantum secrets management
 #[derive(Parser)]

src/config/auth.rs

@@ -1,6 +1,7 @@
-use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
+use serde::{Deserialize, Serialize};
+
 /// Authentication configuration
 #[derive(Debug, Clone, Deserialize, Serialize, Default)]
 pub struct AuthConfig {

src/config/engines.rs

@@ -1,6 +1,7 @@
-use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 
+use serde::{Deserialize, Serialize};
+
 /// Secrets engines configuration
 #[derive(Debug, Clone, Deserialize, Serialize, Default)]
 pub struct EnginesConfig {

src/config/logging.rs

@@ -1,6 +1,7 @@
-use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
+use serde::{Deserialize, Serialize};
+
 /// Logging configuration
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct LoggingConfig {

src/config/mod.rs

@@ -10,6 +10,8 @@ mod telemetry;
 mod vault;
 
 // Re-export all public types
+use std::path::Path;
+
 pub use auth::{AuthConfig, CedarAuthConfig, TokenAuthConfig};
 pub use crypto::{AwsLcCryptoConfig, CryptoConfig, OpenSSLCryptoConfig, RustCryptoCryptoConfig};
 pub use engines::{EngineConfig, EnginesConfig};
@@ -18,14 +20,12 @@ pub use logging::LoggingConfig;
 pub use seal::{AutoUnsealConfig, SealConfig, ShamirSealConfig};
 pub use server::ServerSection;
 pub use storage::{
-    EtcdStorageConfig, FilesystemStorageConfig, PostgreSQLStorageConfig,
-    StorageConfig, SurrealDBStorageConfig,
+    EtcdStorageConfig, FilesystemStorageConfig, PostgreSQLStorageConfig, StorageConfig,
+    SurrealDBStorageConfig,
 };
 pub use telemetry::TelemetryConfig;
 pub use vault::VaultSection;
 
-use std::path::Path;
-
 /// Main vault configuration
 #[derive(Debug, Clone, serde::Deserialize, serde::Serialize)]
 pub struct VaultConfig {

src/config/server.rs

@@ -1,6 +1,7 @@
-use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
+use serde::{Deserialize, Serialize};
+
 /// Server configuration
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct ServerSection {

src/config/storage.rs

@@ -1,6 +1,7 @@
-use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
+use serde::{Deserialize, Serialize};
+
 /// Storage configuration
 #[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct StorageConfig {

src/core/vault.rs

@@ -2,6 +2,8 @@ use std::collections::HashMap;
 use std::sync::Arc;
 
 use crate::auth::TokenManager;
+#[cfg(feature = "server")]
+use crate::background::LeaseRevocationWorker;
 use crate::config::VaultConfig;
 use crate::crypto::CryptoBackend;
 use crate::engines::{DatabaseEngine, Engine, KVEngine, PkiEngine, TransitEngine};
@@ -9,9 +11,6 @@ use crate::error::Result;
 use crate::storage::StorageBackend;
 use crate::telemetry::Metrics;
 
-#[cfg(feature = "server")]
-use crate::background::LeaseRevocationWorker;
-
 /// Vault core - manages engines, crypto backend, and storage
 pub struct VaultCore {
     /// Mounted secrets engines (mount_path -> engine)
@@ -78,21 +77,21 @@ impl VaultCore {
 
     /// Find engine by path prefix
     pub fn route_to_engine(&self, path: &str) -> Option<&dyn Engine> {
-        // Find the longest matching mount path
         let mut best_match: Option<(&str, &dyn Engine)> = None;
 
         for (mount_path, engine) in &self.engines {
-            if path.starts_with(mount_path) {
-                match best_match {
-                    None => best_match = Some((mount_path, engine.as_ref())),
-                    Some((best_path, _)) => {
-                        if mount_path.len() > best_path.len() {
+            if !path.starts_with(mount_path) {
+                continue;
+            }
+
+            let should_update = best_match
+                .map(|(best_path, _)| mount_path.len() > best_path.len())
+                .unwrap_or(true);
+
+            if should_update {
                 best_match = Some((mount_path, engine.as_ref()));
             }
         }
-                }
-            }
-        }
 
         best_match.map(|(_, engine)| engine)
     }
@@ -102,17 +101,18 @@ impl VaultCore {
         let mut best_match: Option<(&str, &str)> = None;
 
         for mount_path in self.engines.keys() {
-            if path.starts_with(mount_path) {
-                match best_match {
-                    None => best_match = Some((mount_path, path)),
-                    Some((best_path, _)) => {
-                        if mount_path.len() > best_path.len() {
+            if !path.starts_with(mount_path) {
+                continue;
+            }
+
+            let should_update = best_match
+                .map(|(best_path, _)| mount_path.len() > best_path.len())
+                .unwrap_or(true);
+
+            if should_update {
                 best_match = Some((mount_path, path));
             }
         }
-                }
-            }
-        }
 
         best_match.map(|(mount_path, path)| {
             let relative = if path.len() > mount_path.len() {
@@ -193,11 +193,12 @@ impl EngineRegistry {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{
         EngineConfig, FilesystemStorageConfig, SealConfig, ShamirSealConfig, StorageConfig,
     };
-    use tempfile::TempDir;
 
     fn create_test_vault_config(temp_dir: &TempDir) -> VaultConfig {
         VaultConfig {

src/crypto/backend.rs

@@ -1,6 +1,7 @@
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use serde::{Deserialize, Serialize};
-use std::sync::Arc;
 
 use super::openssl_backend::OpenSSLBackend;
 use crate::config::CryptoConfig;
@@ -95,7 +96,8 @@ pub struct KeyPair {
     pub public_key: PublicKey,
 }
 
-/// Crypto backend trait - abstraction over different cryptographic implementations
+/// Crypto backend trait - abstraction over different cryptographic
+/// implementations
 #[async_trait]
 pub trait CryptoBackend: Send + Sync + std::fmt::Debug {
     /// Generate a keypair for the given algorithm

src/crypto/mod.rs

@@ -5,11 +5,10 @@ pub mod rustcrypto_backend;
 #[cfg(feature = "aws-lc")]
 pub mod aws_lc;
 
+#[cfg(feature = "aws-lc")]
+pub use aws_lc::AwsLcBackend;
 pub use backend::{
     CryptoBackend, CryptoRegistry, KeyAlgorithm, KeyPair, PrivateKey, PublicKey, SymmetricAlgorithm,
 };
 pub use openssl_backend::OpenSSLBackend;
 pub use rustcrypto_backend::RustCryptoBackend;
-
-#[cfg(feature = "aws-lc")]
-pub use aws_lc::AwsLcBackend;

src/crypto/rustcrypto_backend.rs

@@ -6,9 +6,10 @@
 //! - Symmetric: AES-256-GCM, ChaCha20-Poly1305
 //! - Hashing: SHA-256, SHA-512
 
+use std::fmt;
+
 use async_trait::async_trait;
 use rand::RngCore;
-use std::fmt;
 
 use crate::crypto::backend::{
     CryptoBackend, KeyAlgorithm, KeyPair, PrivateKey, PublicKey, SymmetricAlgorithm,

src/engines/database.rs

@@ -1,10 +1,11 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{Duration, Utc};
 use rand::Rng;
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
-use std::collections::HashMap;
-use std::sync::Arc;
 use tokio::sync::RwLock;
 
 use super::Engine as SecretEngine;
@@ -426,11 +427,12 @@ impl SecretEngine for DatabaseEngine {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, SealConfig, ShamirSealConfig, StorageConfig};
     use crate::crypto::CryptoRegistry;
     use crate::storage::StorageRegistry;
-    use tempfile::TempDir;
 
     async fn setup_engine() -> Result<(DatabaseEngine, TempDir)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/engines/kv.rs

@@ -1,8 +1,9 @@
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
-use std::sync::Arc;
 
 use super::Engine;
 use crate::core::SealMechanism;
@@ -268,12 +269,13 @@ impl Engine for KVEngine {
 
 #[cfg(test)]
 mod tests {
+    use serde_json::json;
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, SealConfig, ShamirSealConfig, StorageConfig};
     use crate::crypto::CryptoRegistry;
     use crate::storage::StorageRegistry;
-    use serde_json::json;
-    use tempfile::TempDir;
 
     async fn setup_engine() -> Result<(KVEngine, TempDir, Arc<dyn CryptoBackend>)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/engines/mod.rs

@@ -3,13 +3,12 @@ pub mod kv;
 pub mod pki;
 pub mod transit;
 
+use async_trait::async_trait;
 pub use database::DatabaseEngine;
 pub use kv::KVEngine;
 pub use pki::PkiEngine;
-pub use transit::TransitEngine;
-
-use async_trait::async_trait;
 use serde_json::Value;
+pub use transit::TransitEngine;
 
 use crate::error::Result;
 

src/engines/pki.rs

@@ -1,8 +1,9 @@
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{Duration, Utc};
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
-use std::sync::Arc;
 
 use super::Engine as SecretEngine;
 use crate::core::SealMechanism;
@@ -556,11 +557,12 @@ impl SecretEngine for PkiEngine {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, SealConfig, ShamirSealConfig, StorageConfig};
     use crate::crypto::CryptoRegistry;
     use crate::storage::StorageRegistry;
-    use tempfile::TempDir;
 
     async fn setup_engine() -> Result<(PkiEngine, TempDir)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/engines/transit.rs

@@ -1,9 +1,10 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use base64::engine::general_purpose::STANDARD as BASE64;
 use base64::Engine as _;
 use serde_json::{json, Value};
-use std::collections::HashMap;
-use std::sync::Arc;
 
 use super::Engine;
 use crate::core::SealMechanism;
@@ -114,7 +115,8 @@ impl TransitEngine {
         let current_version = key.current_version;
         drop(keys);
 
-        // Encrypt plaintext using the current key version (lock is dropped before await)
+        // Encrypt plaintext using the current key version (lock is dropped before
+        // await)
         let ciphertext = self
             .crypto
             .encrypt_symmetric(&key_material, plaintext, SymmetricAlgorithm::Aes256Gcm)
@@ -214,7 +216,8 @@ impl Engine for TransitEngine {
                 .ok_or_else(|| VaultError::storage("Missing 'plaintext' in request".to_string()))?;
 
             let _ciphertext = self.encrypt(key_name, plaintext.as_bytes()).await?;
-            // Note: In a full implementation, this would return the ciphertext in the response
+            // Note: In a full implementation, this would return the ciphertext
+            // in the response
         } else if let Some(key_name) = path.strip_prefix("decrypt/") {
             let ciphertext = data
                 .get("ciphertext")
@@ -224,7 +227,8 @@ impl Engine for TransitEngine {
                 })?;
 
             let _plaintext = self.decrypt(key_name, ciphertext).await?;
-            // Note: In a full implementation, this would return the plaintext in the response
+            // Note: In a full implementation, this would return the plaintext
+            // in the response
         } else if let Some(key_name) = path.strip_prefix("rewrap/") {
             let ciphertext = data
                 .get("ciphertext")
@@ -234,7 +238,8 @@ impl Engine for TransitEngine {
                 })?;
 
             let _new_ciphertext = self.rewrap(key_name, ciphertext).await?;
-            // Note: In a full implementation, this would return the new ciphertext in the response
+            // Note: In a full implementation, this would return the new
+            // ciphertext in the response
         }
 
         Ok(())
@@ -279,11 +284,12 @@ impl Engine for TransitEngine {
 
 #[cfg(test)]
 mod tests {
+    use tempfile::TempDir;
+
     use super::*;
     use crate::config::{FilesystemStorageConfig, SealConfig, ShamirSealConfig, StorageConfig};
     use crate::crypto::CryptoRegistry;
     use crate::storage::StorageRegistry;
-    use tempfile::TempDir;
 
     async fn setup_engine() -> Result<(TransitEngine, TempDir)> {
         let temp_dir = TempDir::new().map_err(|e| VaultError::storage(e.to_string()))?;

src/error.rs

@@ -1,5 +1,6 @@
 use std::backtrace::Backtrace;
 use std::fmt;
+
 use thiserror::Error;
 
 /// Main vault error type

src/main.rs

@@ -1,16 +1,16 @@
+#[cfg(feature = "cli")]
+use std::path::PathBuf;
+#[cfg(feature = "cli")]
+use std::sync::Arc;
+
 #[cfg(feature = "cli")]
 use clap::Parser;
-
 #[cfg(feature = "cli")]
 use secretumvault::cli::{Cli, Command, OperatorCommand, SecretCommand};
 #[cfg(feature = "cli")]
 use secretumvault::config::VaultConfig;
 #[cfg(feature = "cli")]
 use secretumvault::core::VaultCore;
-#[cfg(feature = "cli")]
-use std::path::PathBuf;
-#[cfg(feature = "cli")]
-use std::sync::Arc;
 
 #[tokio::main]
 #[cfg(feature = "cli")]
@@ -53,7 +53,10 @@ async fn server_command(
 
     #[cfg(feature = "server")]
     {
-        eprintln!("Note: Server mode via CLI is limited. Use library API with --features server for full functionality including TLS.");
+        eprintln!(
+            "Note: Server mode via CLI is limited. Use library API with --features server for \
+             full functionality including TLS."
+        );
         eprintln!("Server feature not fully implemented in CLI mode.");
         std::process::exit(1);
     }

src/storage/etcd.rs

@@ -13,13 +13,15 @@
 //! ```
 //!
 //! For development, run etcd with:
-//! - Docker: `docker run -d --name etcd -p 2379:2379 quay.io/coreos/etcd:v3.5.0`
+//! - Docker: `docker run -d --name etcd -p 2379:2379
+//!   quay.io/coreos/etcd:v3.5.0`
 //! - Local: `etcd` (requires etcd binary installed)
 
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use serde_json::{json, Value};
-use std::sync::Arc;
 
 use crate::config::EtcdStorageConfig;
 use crate::error::{StorageError, StorageResult};

src/storage/filesystem.rs

@@ -1,8 +1,9 @@
-use async_trait::async_trait;
-use chrono::{DateTime, Utc};
 use std::fs;
 use std::path::{Path, PathBuf};
 
+use async_trait::async_trait;
+use chrono::{DateTime, Utc};
+
 use crate::config::FilesystemStorageConfig;
 use crate::error::StorageError;
 use crate::storage::{
@@ -314,9 +315,10 @@ impl StorageBackend for FilesystemBackend {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use tempfile::TempDir;
 
+    use super::*;
+
     fn create_test_backend() -> (FilesystemBackend, TempDir) {
         let temp_dir = TempDir::new().expect("Failed to create temp dir");
         let config = FilesystemStorageConfig {

src/storage/mod.rs

@@ -1,8 +1,9 @@
+use std::collections::HashMap;
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
-use std::collections::HashMap;
-use std::sync::Arc;
 
 pub mod filesystem;
 pub mod postgresql;
@@ -13,17 +14,15 @@ pub mod surrealdb;
 #[cfg(feature = "etcd-storage")]
 pub mod etcd;
 
-use crate::config::StorageConfig;
-use crate::error::{Result, StorageResult};
-
+#[cfg(feature = "etcd-storage")]
+pub use etcd::EtcdBackend;
 pub use filesystem::FilesystemBackend;
 pub use postgresql::PostgreSQLBackend;
-
 #[cfg(feature = "surrealdb-storage")]
 pub use surrealdb::SurrealDBBackend;
 
-#[cfg(feature = "etcd-storage")]
-pub use etcd::EtcdBackend;
+use crate::config::StorageConfig;
+use crate::error::{Result, StorageResult};
 
 /// Encrypted data stored in backend
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -160,7 +159,8 @@ impl StorageRegistry {
                 }
                 if config.backend == "postgresql" && cfg!(not(feature = "postgresql-storage")) {
                     return Err(crate::VaultError::config(
-                        "PostgreSQL backend not enabled. Compile with --features postgresql-storage"
+                        "PostgreSQL backend not enabled. Compile with --features \
+                         postgresql-storage",
                     ));
                 }
                 Err(crate::VaultError::config(format!(

src/storage/postgresql.rs

@@ -1,12 +1,14 @@
 //! PostgreSQL storage backend for SecretumVault
 //!
 //! Provides persistent secret storage using PostgreSQL as the backend.
-//! This implementation uses an in-memory store (production would use sqlx + real DB).
+//! This implementation uses an in-memory store (production would use sqlx +
+//! real DB).
+
+use std::collections::HashMap;
+use std::sync::Arc;
 
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
-use std::collections::HashMap;
-use std::sync::Arc;
 use tokio::sync::RwLock;
 
 use crate::config::PostgreSQLStorageConfig;

src/storage/surrealdb.rs

@@ -12,19 +12,20 @@
 //! url = "ws://localhost:8000"  # For future real SurrealDB connections
 //! ```
 
+use std::collections::HashMap;
+use std::sync::Arc;
+
 use async_trait::async_trait;
 use chrono::{DateTime, Utc};
 use serde_json::{json, Value};
-use std::collections::HashMap;
-use std::sync::Arc;
 use tokio::sync::RwLock;
 
 use crate::config::SurrealDBStorageConfig;
 use crate::error::{StorageError, StorageResult};
 use crate::storage::{EncryptedData, Lease, StorageBackend, StoredKey, StoredPolicy};
 
-/// SurrealDB storage backend - in-memory implementation with SurrealDB semantics
-/// Tables are organized as HashMap<table_name, HashMap<id, record>>
+/// SurrealDB storage backend - in-memory implementation with SurrealDB
+/// semantics Tables are organized as HashMap<table_name, HashMap<id, record>>
 pub struct SurrealDBBackend {
     store: Arc<RwLock<HashMap<String, HashMap<String, Value>>>>,
 }

src/telemetry.rs

@@ -6,10 +6,11 @@
 //! - Metrics collection and reporting
 //! - Performance monitoring
 
-use chrono::{DateTime, Utc};
-use serde::{Deserialize, Serialize};
 use std::sync::atomic::{AtomicU64, Ordering};
 use std::sync::Arc;
+
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
 use tokio::sync::RwLock;
 use tracing::{debug, error, info, span, warn, Level};