ChangeLog:

- big commit.

libc/gfx/gfx_core.c

@@ -13,7 +13,7 @@
  *   gfx_set_draw_page    / get   — updates _gfx_addr_base for the new page
  *   gfx_set_bank         / get   — sets the W3 page byte (0x50..0x5F)
  *   gfx_wait_vsync               — EI; HALT until next frame interrupt
- *   gfx_pal_load / gfx_pal_set   — BIOS $A4 PIC_SET_PAL wrappers
+ *   (palette wrappers live in gfx_palette.c, backed by libc/video/palette.c)
  *
  * Shared state (extern from this file):
  *   _gfx_addr_base   — 0xC000 for page 0, 0xC140 for page 1.  Every
@@ -136,43 +136,6 @@ void gfx_wait_vsync(void) __naked
     __endasm;
 }
 
-/* ---- Palette (BIOS $A4 PIC_SET_PAL) ----------------------------- */
-
-static uint8_t  pal_num_;
-static uint8_t  pal_start_;
-static uint8_t  pal_count_;
-static uint16_t pal_data_;
-
-void gfx_pal_load(uint8_t pal_num, uint8_t start, uint8_t count,
-                  const uint8_t *data)
-{
-    pal_num_   = pal_num;
-    pal_start_ = start;
-    pal_count_ = count;
-    pal_data_  = (uint16_t)(uintptr_t)data;
-
-    __asm
-        push  ix
-        ld    a, (_pal_start_)
-        ld    e, a                  ; E = start
-        ld    a, (_pal_count_)
-        ld    d, a                  ; D = count (0 → 256)
-        ld    hl, (_pal_data_)      ; HL = data
-        ld    b, #0xFF              ; mask
-        ld    a, (_pal_num_)        ; A = palette number
-        ld    c, #0xA4              ; BIOS PIC_SET_PAL
-        rst   #0x08
-        pop   ix
-    __endasm;
-}
-
-void gfx_pal_set(uint8_t pal_num, uint8_t idx,
-                 uint8_t r, uint8_t g, uint8_t b)
-{
-    uint8_t entry[4];
-    entry[0] = b;
-    entry[1] = g;
-    entry[2] = r;
-    entry[3] = 0;
-    gfx_pal_load(pal_num, idx, 1, entry);
-}
+/* Palette wrappers (gfx_pal_load / gfx_pal_set / gfx_pal_get /
+ * gfx_pal_get_color / gfx_pal_reset) moved to gfx_palette.c — see also
+ * libc/video/palette.c for the shared low-level $A4 / $A6 implementation. */