refactor/feature/fix: Major refactor of codebase

refactor(stdio): replace console/terminal command system with buffer-based stdio
- Introduced stdio.pas as the unified command I/O layer.
- All 31 command procedures across 15 files now receive stdin_buf,
  stdout_buf, and stderr_buf (POutBuf) instead of a single outbuf.
- vterminal.pas creates all three buffers per command invocation and
  displays both stdout and stderr.
- Deleted console.pas, terminal.pas, and 9 obsolete windowing programs
  (shell, splash, edit, memview, themer, netlog, vmlog, vmstate, udpcat).
- Migrated all registerCommand calls to stdio, rewrote vterminal
  processCommand to use stdio.findCommand, and added proper error
  routing to stderr for invalid params, bad paths, and system errors.

refactor(syslog): replace console logging with serial-backed syslog
- Introduced syslog.pas for kernel-level logging over serial/dev.
- Migrated all boot logging in kernel.pas from console.outputln/
  writestringln to syslog.logln/writestringln.
- Converted 19 fault handlers, hashmap, lists, scheduler, tracer, net,
  udp, and all driver init paths to use syslog.
- Rewrote BSOD in util.pas (50+ calls) from console to syslog.
- Removed CONSOLE_SLOW_REDRAW, TRGB565, TRGB565Pair, and HWND
  from system.pas.

fix(keyboard): add ring buffer and proper press/release cycling for LVGL input
- Replaced the single last_key/key_pressed slot in lvgl.pas with a
  16-entry ring buffer (kb_buf, kb_head, kb_tail) to prevent ISR
  overwrites when typing fast.
- Added a kb_pending_release flag so each keystroke gets a
  full PRESSED->RELEASED cycle before the next key is consumed —
  LVGL requires this pairing and was silently dropping intermediate
  keys when receiving consecutive PRESSED events without
  intervening releases.

feat(vterminal): use Hack monospace font for terminal output
- Added Hack Regular 14px (hack_14.c) as a custom LVGL font.
- Removed the .static_bitmap field from the generated font file
  (not present in LVGL 9.2 lv_font_t struct).
- Declared the hack_14 external symbol in lvgl.pas and switched
  vterminal's text label from lv_font_montserrat_14 to hack_14
  for proper monospace terminal rendering.

src/include/bios_data_area.pas

@@ -75,7 +75,7 @@ procedure tick_update(data : void);
 implementation
 
 uses
-    console, vmemorymanager;
+    vmemorymanager;
 
 procedure tick_update(data : void);
 begin

src/include/hashmap.pas

@@ -22,7 +22,7 @@ unit hashmap;
 interface
 
 uses
-    md5, util, strings, lmemorymanager, console, tracer;
+    md5, util, strings, lmemorymanager, tracer, syslog;
 
 type
     DPHashItem = ^PHashItem;
@@ -265,23 +265,23 @@ var
 begin
     for i:=0 to map^.Size-1 do begin
         if map^.table[i] <> nil then begin
-            writestring('Map[');
-            writeint(i);
-            writestring(']->(0)="');
-            writestring(map^.table[i]^.key);
-            writestring('"');
+            syslog.writestring('Map[');
+            syslog.writeint(i);
+            syslog.writestring(']->(0)="');
+            syslog.writestring(map^.table[i]^.key);
+            syslog.writestring('"');
             item:= map^.table[i]^.next;
             c:=1;
             while item <> nil do begin
-                writestring('->(');
-                writeint(c);
-                writestring(')="');
-                writestring(item^.key);
-                writestring('"');
+                syslog.writestring('->(');
+                syslog.writeint(c);
+                syslog.writestring(')="');
+                syslog.writestring(item^.key);
+                syslog.writestring('"');
                 inc(c);
                 item:= item^.next;
             end;
-            writestringln(' ');
+            syslog.writestringln(' ');
         end;
     end;
 end;

src/include/lists.pas

@@ -22,7 +22,7 @@ unit lists;
 interface
 
 uses
-    console,
+    syslog,
     lmemorymanager,
     tracer,
     util;
@@ -1119,28 +1119,28 @@ var
   testStr2: pchar;
 begin
   { --- Test Managed Linked List --- }
-  console.writeString('--- Testing Managed Linked List ---');
+  syslog.writeString('--- Testing Managed Linked List ---');
   ll := LL_New(sizeof(uint32));
   for i := 1 to 3 do
   begin
     p := LL_Add(ll);
     puint32(p)^ := i;  // Store the value (1, 2, 3)
   end;
-  console.writeString('Managed Linked List Size: ');
-  console.writeintln(LL_Size(ll));
+  syslog.writeString('Managed Linked List Size: ');
+  syslog.writeintln(LL_Size(ll));
   for i := 0 to LL_Size(ll) - 1 do
   begin
     p := LL_Get(ll, i);
-    console.writeString('Element ');
-    console.writeint(i);
-    console.writeString(': ');
-    console.writeintln(puint32(p)^);
+    syslog.writeString('Element ');
+    syslog.writeint(i);
+    syslog.writeString(': ');
+    syslog.writeintln(puint32(p)^);
   end;
   LL_Free(ll);
 
   { --- Test String Linked List --- }
-  console.writeString('');
-  console.writeString('--- Testing String Linked List ---');
+  syslog.writeString('');
+  syslog.writeString('--- Testing String Linked List ---');
   testStr := stringNew(5);
   PuInt8(testStr)^ := ord('H');
   PuInt8(testStr + 1)^ := ord('e');
@@ -1159,65 +1159,65 @@ begin
   strList := STRLL_New;
   STRLL_Add(strList, testStr);
   STRLL_Add(strList, testStr2);
-  console.writeString('String Linked List Size: ');
-  console.writeintln(STRLL_Size(strList));
+  syslog.writeString('String Linked List Size: ');
+  syslog.writeintln(STRLL_Size(strList));
   for i := 0 to STRLL_Size(strList) - 1 do
   begin
-    console.writeString('String ');
-    console.writeint(i);
-    console.writeString(': ');
-    console.writeString(STRLL_Get(strList, i));
+    syslog.writeString('String ');
+    syslog.writeint(i);
+    syslog.writeString(': ');
+    syslog.writeString(STRLL_Get(strList, i));
     
   end;
   STRLL_Free(strList);
 
   { --- Test Dynamic List --- }
-  console.writeString('');
-  console.writeString('--- Testing Dynamic List ---');
+  syslog.writeString('');
+  syslog.writeString('--- Testing Dynamic List ---');
   dlist := DL_New(sizeof(uint32));
   for i := 1 to 5 do
   begin
     intPtr := DL_Add(dlist);
     intPtr^ := i * 10;  // Store values: 10, 20, 30, 40, 50
   end;
-  console.writeString('Dynamic List Size: ');
-  console.writeintln(DL_Size(dlist));
+  syslog.writeString('Dynamic List Size: ');
+  syslog.writeintln(DL_Size(dlist));
   for i := 0 to DL_Size(dlist) - 1 do
   begin
     intPtr := DL_Get(dlist, i);
-    console.writeString('Element ');
-    console.writeint(i);
-    console.writeString(': ');
-    console.writeintln(intPtr^);
+    syslog.writeString('Element ');
+    syslog.writeint(i);
+    syslog.writeString(': ');
+    syslog.writeintln(intPtr^);
   end;
 
   { Insert a new element at index 2 }
   intPtr := DL_Insert(dlist, 2);
   if intPtr <> nil then
     intPtr^ := 999;  // Inserted value 999 at index 2
-  console.writeString('After insertion at index 2, size: ');
-  console.writeintln(DL_Size(dlist));
+  syslog.writeString('After insertion at index 2, size: ');
+  syslog.writeintln(DL_Size(dlist));
   for i := 0 to DL_Size(dlist) - 1 do
   begin
     intPtr := DL_Get(dlist, i);
-    console.writeString('Element ');
-    console.writeint(i);
-    console.writeString(': ');
-    console.writeintln(intPtr^);
+    syslog.writeString('Element ');
+    syslog.writeint(i);
+    syslog.writeString(': ');
+    syslog.writeintln(intPtr^);
   end;
 
   { Delete element at index 3 }
   if DL_Delete(dlist, 3) then
-    console.writeString('Deleted element at index 3.');
-  console.writeString('After deletion, size: ');
-  console.writeintln(DL_Size(dlist));
+    syslog.writeString('Deleted element at index 3.');
+  syslog.writeString('After deletion, size: ');
+  syslog.writeintln(DL_Size(dlist));
   for i := 0 to DL_Size(dlist) - 1 do
   begin
     intPtr := DL_Get(dlist, i);
-    console.writeString('Element ');
-    console.writeint(i);
-    console.writeString(': ');
-    console.writeintln(intPtr^);
+    syslog.writeString('Element ');
+    syslog.writeint(i);
+    syslog.writeString(': ');
+    syslog.writeintln(intPtr^);
   end;
   DL_Free(dlist);
 end;

src/include/md5.pas

@@ -26,7 +26,6 @@ interface
 uses
     util,
     lmemorymanager,
-    console,
     tracer;
 
 const

src/include/strings.pas

@@ -46,9 +46,6 @@ function boolToString(b : boolean; ext : boolean) : pchar;
 
 implementation
 
-uses
-    console;
-
 function hexStringToInt(str : pchar) : uint32;
 var
     result : uint32;

src/include/system.pas

@@ -27,7 +27,6 @@ const
      KERNEL_PAGE_NUMBER = KERNEL_VIRTUAL_BASE SHR 22;
      BSOD_ENABLE = true;
      TRACER_ENABLE = true;
-     CONSOLE_SLOW_REDRAW = false; //Redraws the Window manager after every character, but slows performance.
 
 type
     //internal types
@@ -83,7 +82,6 @@ type
     PDouble = ^Double;
 
     Void = ^uInt32;
-    HWND = uint32;
 
     yord = uInt8;
     xord = uInt8;
@@ -128,19 +126,6 @@ type
     TMask = bitpacked array[0..7] of Boolean;
     PMask = ^TMask;
 
-    TRGB565 = bitpacked record
-      B : UBit5;
-      G : UBit6;
-      R : UBit5
-    end;
-    PRGB565 = ^TRGB565;
-
-    TRGB565Pair = bitpacked record
-      Background : TRGB565;
-      Foreground : TRGB565;
-    end;
-    PRGB565Pair = ^TRGB565Pair;
-
     PText = ^Text;
 
     { ---- Types required by FPC 3.2.2 compiler internals ---- }