add system time, clean up pci into pci.sys, clean up syscall names, fix USERAPC1 typo

code/user/apps/shell_native/shell_native.c

@@ -77,12 +77,35 @@ static void printUIntWidth(uint32_t n, size_t width) {
     printUInt(n);
 }
 
+static void printUIntZeroWidth(uint32_t n, size_t width) {
+    uint32_t digits = u64Digits(n);
+    while (width > digits) { print("0"); width--; }
+    printUInt(n);
+}
+
 static void printUInt64Width(uint64_t n, size_t width) {
     uint32_t digits = u64Digits(n);
     if (width > digits) printSpaces(width - digits);
     printUInt64(n);
 }
 
+static void printDirTime(const SYS_SYSTEM_TIME* t) {
+    if (!t || !(t->Flags & SYS_TIME_FLAG_VALID)) {
+        print("---- -- -- --:--  ");
+        return;
+    }
+    printUIntZeroWidth(t->Year, 4);
+    print("-");
+    printUIntZeroWidth(t->Month, 2);
+    print("-");
+    printUIntZeroWidth(t->Day, 2);
+    print(" ");
+    printUIntZeroWidth(t->Hour, 2);
+    print(":");
+    printUIntZeroWidth(t->Minute, 2);
+    print("  ");
+}
+
 static void printStringWidth(const char* s, size_t width) {
     size_t len = s ? strlen(s) : 0;
     if (s) print(s);
@@ -95,7 +118,7 @@ static void printStringWidth(const char* s, size_t width) {
 static void readLine(char* buf, int len) {
     int pos = 0;
     while (true) {
-        char c = SysKbReadChar();
+        char c = SysReadKeyboardChar();
         if (!c) { SysYield(); continue; }
         if (c == '\r' || c == '\n') { print("\n"); break; }
         if ((c == '\b' || c == 127) && pos > 0) { pos--; print("\b \b"); continue; }
@@ -120,6 +143,7 @@ static void cmd_help() {
     print("Available commands:\n"
           "  help              - Show this list\n"
           "  mem               - Show memory usage\n"
+          "  time              - Show system wall-clock time\n"
           "  stats             - Show scheduler/CPU/PMM telemetry\n"
           "  ps                - List processes\n"
           "  dir [path]        - List directory contents\n"
@@ -226,6 +250,34 @@ static void cmd_stats(void) {
     print("    1024+:    "); printUInt64(pmm.FreeRunHistogram[7]); print("\n");
 }
 
+
+static void cmd_time(void) {
+    SYS_SYSTEM_TIME t;
+    uint32_t status = SysGetSystemTime(&t);
+    if (status != 0) {
+        print("time: failed: ");
+        printUInt(status);
+        print("\n");
+        return;
+    }
+
+    printUIntZeroWidth(t.Year, 4); print("-");
+    printUIntZeroWidth(t.Month, 2); print("-");
+    printUIntZeroWidth(t.Day, 2); print(" ");
+    printUIntZeroWidth(t.Hour, 2); print(":");
+    printUIntZeroWidth(t.Minute, 2); print(":");
+    printUIntZeroWidth(t.Second, 2); print(".");
+    printUIntZeroWidth(t.Millisecond, 3);
+    print(" epoch="); printUInt64(t.EpochSeconds);
+    print(" flags=0x"); printUInt(t.Flags);
+    if (t.Flags & SYS_TIME_FLAG_TZ_KNOWN) {
+        print(" tz="); printInt(t.TimeZoneMinutes);
+    } else {
+        print(" tz=unspecified");
+    }
+    print("\n");
+}
+
 static void cmd_mem(void) {
     SYS_MEMORY_STATUS st;
     if (SysGetMemoryStatus(&st) != 0) {
@@ -338,6 +390,8 @@ static void cmd_dir(const char* path) {
 
     SYS_DIR_ENTRY ke;
     while (SysReadDir(hDir, &ke) == 0) {
+        printDirTime(&ke.LastWriteTime);
+
         // Corrected Attribute Check: 0x10 is the Directory bit in FAT
         if (ke.Attr & 0x10) {
             print("<DIR> ");
@@ -397,7 +451,7 @@ static int runCommand(const char* cmd) {
     if (!cmd || *cmd == '\0') return 0;
     if (strcmp(cmd, "exit") == 0) return 1;
     if (strcmp(cmd, "help") == 0) { cmd_help(); return 0; }
-    if (strcmp(cmd, "clear") == 0) { SysScreenClear(0x012456); return 0; }
+    if (strcmp(cmd, "clear") == 0) { SysClearScreen(0x012456); return 0; }
     if (strncmp(cmd, "crash", 5) == 0) {
         // Check the sub-option trailing "crash " (offset 6)
         if (strcmp(cmd + 6, "void") == 0) {
@@ -437,6 +491,7 @@ static int runCommand(const char* cmd) {
         }
     }
     if (strcmp(cmd, "mem") == 0) { cmd_mem(); return 0; }
+    if (strcmp(cmd, "time") == 0 || strcmp(cmd, "date") == 0) { cmd_time(); return 0; }
     if (strcmp(cmd, "stats") == 0 || strcmp(cmd, "telemetry") == 0) { cmd_stats(); return 0; }
     if (strcmp(cmd, "ps") == 0) { cmd_ps(); return 0; }
     if (strcmp(cmd, "dir") == 0) { cmd_dir("."); return 0; }
@@ -453,7 +508,7 @@ static int runCommand(const char* cmd) {
     if (create_process(program, &hProc, cmd) == 0) {
         SysWaitForProcess(hProc);
         SysCloseHandle(hProc);
-        while (SysKbPoll()) (void)SysKbReadChar();
+        while (SysPollKeyboard()) (void)SysReadKeyboardChar();
     } else { print("shell: launch failed\n"); }
     return 0;
 }