feat: Implement modern Tree directory visualizer, TSC profiler, and VT Art visualizer

- Add dedicated Linux-compatible Tree visualizer with UTF-8/ASCII branch tracking, -L depth filtering, human sizes, and permissions in userland/lazybox/tree.c
- Implement Hardware Invariant Timestamp Counter (TSC) calibration and microsecond delay timer in kernel/tsc.c and include/kernel/tsc.h
- Add Virtual Terminal color palette, live resource utilization bars, and logo banner in kernel/vt_art.c and include/kernel/vt_art.h
- Add LazyBox applets: 'tree', 'tscinfo', and 'vtart'
- Update README.md documentation and command matrix

kernel/vt_art.c

@@ -0,0 +1,69 @@
+// ANSI Virtual Terminal Graphics, Color Palette & Telemetry Visualizer
+#include <kernel/vt_art.h>
+#include <kernel/printk.h>
+
+void vt_show_palette_256(void) {
+    printk(ANSI_BRIGHT_CYAN "=== 16-Color Standard & High-Intensity ANSI Palette ===\n" ANSI_RESET);
+    for (int i = 0; i < 8; i++) {
+        printk("\x1b[48;5;%dm  %2d  \x1b[0m", i, i);
+    }
+    printk("\n");
+    for (int i = 8; i < 16; i++) {
+        printk("\x1b[48;5;%dm  %2d  \x1b[0m", i, i);
+    }
+    printk("\n\n");
+
+    printk(ANSI_BRIGHT_CYAN "=== 216-Color RGB Cube (6x6x6) ===\n" ANSI_RESET);
+    for (int g = 0; g < 6; g++) {
+        for (int r = 0; r < 6; r++) {
+            for (int b = 0; b < 6; b++) {
+                int code = 16 + (r * 36) + (g * 6) + b;
+                printk("\x1b[48;5;%dm \x1b[0m", code);
+            }
+            printk(" ");
+        }
+        printk("\n");
+    }
+    printk("\n");
+
+    printk(ANSI_BRIGHT_CYAN "=== 24-Step Grayscale Ramp ===\n" ANSI_RESET);
+    for (int i = 232; i <= 255; i++) {
+        printk("\x1b[48;5;%dm  \x1b[0m", i);
+    }
+    printk("\n\n");
+}
+
+static void draw_progress_bar(const char* label, uint32_t percent, const char* color_code) {
+    printk("%-8s [", label);
+    uint32_t filled = (percent * 30) / 100;
+    if (filled > 30) filled = 30;
+
+    printk("%s", color_code);
+    for (uint32_t i = 0; i < filled; i++) {
+        printk("█");
+    }
+    printk(ANSI_RESET);
+    for (uint32_t i = filled; i < 30; i++) {
+        printk("░");
+    }
+    printk("] %3u%%\n", percent);
+}
+
+void vt_show_load_bars(uint32_t cpu_percent, uint32_t mem_percent, uint32_t disk_percent) {
+    printk(ANSI_BRIGHT_CYAN "=== Live System Load & Resource Utilization ===\n" ANSI_RESET);
+    draw_progress_bar("CPU Core", cpu_percent, ANSI_BRIGHT_GREEN);
+    draw_progress_bar("RAM Heap", mem_percent, ANSI_BRIGHT_YELLOW);
+    draw_progress_bar("VFS Disk", disk_percent, ANSI_BRIGHT_CYAN);
+    printk("\n");
+}
+
+void vt_show_logo_banner(void) {
+    printk(ANSI_BRIGHT_CYAN
+        "  ____  _   _ ____       ___  ____  \n"
+        " / ___|| | | | __ )     / _ \\/ ___| \n"
+        " \\___ \\| | | |  _ \\ ___| | | \\___ \\ \n"
+        "  ___) | |_| | |_) |___| |_| |___) |\n"
+        " |____/ \\___/|____/     \\___/|____/ \n"
+        ANSI_RESET);
+    printk(ANSI_BRIGHT_MAGENTA "  Modular Monolithic Linux-Compatible Hybrid Kernel\n\n" ANSI_RESET);
+}