clean up and standardize types across the codebase, unify atomic operations, improve UTF-8 handling throughout the system, remove obsolete input and named queue interfaces, redesign process preparation and creation, tighten IPC and service boundaries, improve error handling and reliability, minor documentation cleanup, fix doom surfaces, fix panic in ini parsing.

code/user/personalities/posix/posix_internal.h

@@ -105,7 +105,7 @@ typedef struct POSIX_THREAD_STATE {
 } POSIX_THREAD_STATE;
 
 // Initializes process-local POSIX state and attaches the initial thread.
-uint32_t PosixRuntimeInitializeProcess(void);
+KSTATUS PosixRuntimeInitializeProcess(void);
 
 // Returns the POSIX state for the current process after startup.
 POSIX_PROCESS_STATE* PosixRuntimeProcessState(void);
@@ -117,10 +117,10 @@ POSIX_THREAD_STATE* PosixRuntimeThreadState(void);
 POSIX_LOGICAL_PROCESS_STATE* PosixRuntimeLogicalProcessState(void);
 
 // Attaches POSIX state to the current native TEB.
-uint32_t PosixRuntimeAttachThread(void);
+KSTATUS PosixRuntimeAttachThread(void);
 
 // Attaches a thread while seeding its inherited persistent signal mask.
-uint32_t PosixRuntimeAttachThreadWithSignalMask(uint64_t signalMask);
+KSTATUS PosixRuntimeAttachThreadWithSignalMask(uint64_t signalMask);
 
 // Allocates one borrowed logical child and pins its inherited descriptor snapshot.
 KSTATUS PosixVforkBeginBorrowedChild(POSIX_VFORK_CHILD_STATE** childOut);