refactor: apply clippy auto-fixes (162 warnings resolved)

- Fix needless borrows and references
- Collapse nested if statements
- Replace manual strip_prefix with str::strip_prefix()
- Remove redundant closures in map/unwrap_or_else
- Use Iterator::next_back() instead of rev().next()
- Simplify map_or patterns
- Use std::io::Error::other() instead of new(ErrorKind::Other, ..)
- Use div_ceil() instead of manual ceiling division
- Consolidate format! string arguments
- Various other idiomatic Rust improvements

39 files changed, 220 insertions(+), 320 deletions(-)

src/infrastructure/adapters/contact_storage_adapter.rs

@@ -380,8 +380,8 @@ impl ContactUseCase for ContactStorageAdapter {
             } else if trimmed.starts_with("NOTE:") {
                 notes = Some(trimmed[5..].trim().to_string());
             } else if trimmed.starts_with("EMAIL") {
-                if let Some(value) = trimmed.split(':').nth(1) {
-                    if !value.is_empty() {
+                if let Some(value) = trimmed.split(':').nth(1)
+                    && !value.is_empty() {
                         let email_type = if trimmed.contains("TYPE=HOME") { "home" }
                             else if trimmed.contains("TYPE=WORK") { "work" }
                             else { "other" };
@@ -391,10 +391,9 @@ impl ContactUseCase for ContactStorageAdapter {
                             is_primary: emails.is_empty(),
                         });
                     }
-                }
-            } else if trimmed.starts_with("TEL") {
-                if let Some(value) = trimmed.split(':').nth(1) {
-                    if !value.is_empty() {
+            } else if trimmed.starts_with("TEL")
+                && let Some(value) = trimmed.split(':').nth(1)
+                    && !value.is_empty() {
                         let phone_type = if trimmed.contains("TYPE=CELL") || trimmed.contains("TYPE=MOBILE") { "mobile" }
                             else if trimmed.contains("TYPE=HOME") { "home" }
                             else if trimmed.contains("TYPE=WORK") { "work" }
@@ -405,8 +404,6 @@ impl ContactUseCase for ContactStorageAdapter {
                             is_primary: phones.is_empty(),
                         });
                     }
-                }
-            }
         }
 
         let contact_uid = uid.unwrap_or_else(|| format!("{}@oxicloud", Uuid::new_v4()));

src/infrastructure/adapters/error_adapters.rs

@@ -24,10 +24,10 @@ use crate::domain::errors::{DomainError, ErrorKind};
 #[macro_export]
 macro_rules! impl_infra_error_to_domain {
     ($error_type:ty, $entity_type:expr) => {
-        impl From<$error_type> for crate::domain::errors::DomainError {
+        impl From<$error_type> for $crate::domain::errors::DomainError {
             fn from(err: $error_type) -> Self {
-                crate::domain::errors::DomainError {
-                    kind: crate::domain::errors::ErrorKind::InternalError,
+                $crate::domain::errors::DomainError {
+                    kind: $crate::domain::errors::ErrorKind::InternalError,
                     entity_type: $entity_type,
                     entity_id: None,
                     message: format!("{}", err),
@@ -81,7 +81,7 @@ impl IntoDomainError for sqlx::Error {
             }
             sqlx::Error::Database(db_err) => {
                 // Handle specific PostgreSQL error codes
-                if db_err.code().map_or(false, |c| c == "23505") {
+                if db_err.code().is_some_and(|c| c == "23505") {
                     DomainError::already_exists(entity_type, "Record already exists")
                 } else {
                     DomainError::new(