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/tests/stats_abi_smoke/stats_abi_smoke.c

@@ -45,7 +45,7 @@ static void fail(const char* what) {
 }
 
 // Fails the test with one status value.
-static void fail_status(const char* what, uint32_t status) {
+static void fail_status(const char* what, KSTATUS status) {
     print("stats_abi_smoke: ");
     print(what);
     print(" status=");
@@ -70,7 +70,7 @@ static void expect_status(const char* what, uint32_t got, uint32_t expected) {
 // Verifies fixed-size stats classes report and fill their public header.
 static void check_fixed_stats(void) {
     size_t required = 0;
-    uint32_t status = SysQueryKernelStats(SYS_KERNEL_STATS_SCHEDULER, 0, 0, &required);
+    KSTATUS status = SysQueryKernelStats(SYS_KERNEL_STATS_SCHEDULER, 0, 0, &required);
     if (status != NTLSTATUS_SUCCESS) fail_status("scheduler size", status);
     if (required != sizeof(SYS_SCHEDULER_STATS)) fail("scheduler required size mismatch");
 
@@ -125,7 +125,7 @@ static void check_fixed_stats(void) {
 // Verifies CPU stats use a size-reported trailing-record layout.
 static void check_cpu_stats(void) {
     size_t required = 0;
-    uint32_t status = SysQueryKernelStats(SYS_KERNEL_STATS_CPU, 0, 0, &required);
+    KSTATUS status = SysQueryKernelStats(SYS_KERNEL_STATS_CPU, 0, 0, &required);
     if (status != NTLSTATUS_SUCCESS) fail_status("cpu size", status);
     if (required < sizeof(SYS_CPU_STATS) + sizeof(SYS_CPU_STAT)) fail("cpu required size too small");