Refactor and clean up code across multiple modules

- Simplified token type assignment in OAuth service.
- Removed unused session_lock module and re-exported Session from zesdex_entities.
- Cleaned up session entity by removing unnecessary comments and code.
- Consolidated session handling in HTTP handlers for better readability.
- Improved formatting and readability in OAuth repository tests.
- Enhanced session lock repository with clearer match statements.
- Streamlined session repository error handling.
- Refined RNG tests for better clarity.
- Adjusted module visibility and organization in lib.rs.
- Updated IPC client and connection code for better error handling and clarity.
- Improved frame handling in IPC for better readability.
- Organized module imports and added test utilities for IPC.
- Enhanced database connection error handling.
- Simplified JWT token creation error handling.
- Improved password verification error handling.
- Cleaned up state management code for better readability.
- Refactored middleware for session authentication and rate limiting.
- Simplified clipboard utility for better error handling.
- Enhanced logging initialization for better error reporting.
- Improved pagination utility with clearer method annotations.
- Cleaned up sanitization functions for filenames and paths.
- Enhanced slug generation functions for better clarity and usability.

crates/zesdex-iam/src/infrastructure/persistence/session_repo.rs

@@ -46,9 +46,7 @@ impl SessionRepository for FileSystemSessionRepository {
     fn load_session(&self, base_dir: &Path, id: &str) -> anyhow::Result<Session> {
         // Directory-traversal prevention.
         if id.contains('/') || id.contains('\\') || id.contains("..") {
-            anyhow::bail!(
-                "invalid session id '{id}': must not contain path separators"
-            );
+            anyhow::bail!("invalid session id '{id}': must not contain path separators");
         }
         let path = base_dir.join("sessions").join(id).join("session.json");
         if !path.exists() {
@@ -79,9 +77,7 @@ impl SessionRepository for FileSystemSessionRepository {
 
     fn delete_session(&self, base_dir: &Path, id: &str) -> anyhow::Result<()> {
         if id.contains('/') || id.contains('\\') || id.contains("..") {
-            anyhow::bail!(
-                "invalid session id '{id}': must not contain path separators"
-            );
+            anyhow::bail!("invalid session id '{id}': must not contain path separators");
         }
         let dir = base_dir.join("sessions").join(id);
         if dir.exists() {