Fix Windows compilation errors

- Added Win32_System_Kernel feature for CONTEXT structure support
- Added MemoryRead error variant to GhostError enum
- Fixed all MemoryReadError -> MemoryRead { message } conversions
- Fixed all ConfigurationError -> Configuration { message } conversions
- Added missing HashMap import in pe_parser.rs
- Removed unused imports (ReadProcessMemory, HANDLE, std::mem)
- Prefixed unused variables with underscore (_file_header, _suspicious_start_patterns)

This fixes all Windows build errors on CI/CD.

ghost-core/Cargo.toml

@@ -32,6 +32,7 @@ windows = { version = "0.58", features = [
     "Win32_System_ProcessStatus",
     "Win32_System_Memory",
     "Win32_System_LibraryLoader",
+    "Win32_System_Kernel",
     "Win32_Security",
     "Win32_UI_WindowsAndMessaging",
 ] }

ghost-core/src/error.rs

@@ -16,6 +16,9 @@ pub enum GhostError {
     #[error("Memory enumeration failed: {reason}")]
     MemoryEnumeration { reason: String },
 
+    #[error("Memory read error: {message}")]
+    MemoryRead { message: String },
+
     #[error("Thread enumeration failed: {reason}")]
     ThreadEnumeration { reason: String },
 

ghost-core/src/hooks.rs

@@ -404,7 +404,7 @@ mod platform {
                 // Create memory reader closure
                 let memory_reader = |pid: u32, addr: usize, size: usize| -> Result<Vec<u8>> {
                     let handle = OpenProcess(PROCESS_VM_READ, false, pid).map_err(|e| {
-                        GhostError::MemoryReadError(format!("OpenProcess failed: {}", e))
+                        GhostError::MemoryRead { message: format!("OpenProcess failed: {}", e) }
                     })?;
 
                     let mut buffer = vec![0u8; size];
@@ -424,9 +424,9 @@ mod platform {
                         buffer.truncate(bytes_read);
                         Ok(buffer)
                     } else {
-                        Err(GhostError::MemoryReadError(
-                            "ReadProcessMemory failed".to_string(),
-                        ))
+                        Err(GhostError::MemoryRead {
+                            message: "ReadProcessMemory failed".to_string(),
+                        })
                     }
                 };
 

ghost-core/src/pe_parser.rs

@@ -289,11 +289,11 @@ fn parse_iat_from_disk(file_path: &str) -> Result<Vec<ImportEntry>> {
     use std::io::Read;
 
     let mut file = File::open(file_path)
-        .map_err(|e| GhostError::ConfigurationError(format!("Failed to open file: {}", e)))?;
+        .map_err(|e| GhostError::Configuration { message: format!("Failed to open file: {}", e) })?;
 
     let mut buffer = Vec::new();
     file.read_to_end(&mut buffer)
-        .map_err(|e| GhostError::ConfigurationError(format!("Failed to read file: {}", e)))?;
+        .map_err(|e| GhostError::Configuration { message: format!("Failed to read file: {}", e) })?;
 
     parse_iat_from_buffer(&buffer)
 }
@@ -301,11 +301,10 @@ fn parse_iat_from_disk(file_path: &str) -> Result<Vec<ImportEntry>> {
 /// Parse IAT from memory buffer
 #[cfg(windows)]
 fn parse_iat_from_buffer(buffer: &[u8]) -> Result<Vec<ImportEntry>> {
-    use std::mem;
 
     let reader = |_pid: u32, offset: usize, size: usize| -> Result<Vec<u8>> {
         if offset + size > buffer.len() {
-            return Err(GhostError::MemoryReadError("Buffer overflow".to_string()));
+            return Err(GhostError::MemoryRead { message: "Buffer overflow".to_string() });
         }
         Ok(buffer[offset..offset + size].to_vec())
     };
@@ -424,7 +423,7 @@ fn read_cstring(
         offset += 16;
 
         if offset > 512 {
-            return Err(GhostError::MemoryReadError("String too long".to_string()));
+            return Err(GhostError::MemoryRead { message: "String too long".to_string() });
         }
     }
 }

ghost-core/src/thread.rs

@@ -284,7 +284,6 @@ mod platform {
         pid: u32,
         memory_regions: &[crate::MemoryRegion],
     ) -> Result<super::ThreadHijackingResult> {
-        use windows::Win32::System::Diagnostics::Debug::ReadProcessMemory;
         use windows::Win32::System::Threading::{
             GetThreadContext, OpenProcess, ResumeThread, SuspendThread, PROCESS_QUERY_INFORMATION,
             PROCESS_VM_READ, THREAD_GET_CONTEXT, THREAD_SUSPEND_RESUME,

ghost-core/src/yara_engine.rs

@@ -410,7 +410,7 @@ impl DynamicYaraEngine {
     /// Read memory from a specific process and region
     #[cfg(target_os = "windows")]
     fn read_process_memory(pid: u32, region: &MemoryRegion) -> Result<Vec<u8>, GhostError> {
-        use windows::Win32::Foundation::{CloseHandle, HANDLE};
+        use windows::Win32::Foundation::CloseHandle;
         use windows::Win32::System::Diagnostics::Debug::ReadProcessMemory;
         use windows::Win32::System::Threading::{OpenProcess, PROCESS_VM_READ};