libc: сплит «1 функция = 1 модуль» — вся библиотека, wildcard-сборка

- bios/conio/env/errno/gfx/io/mem/mouse/stdio/stdlib/string/sys/time/
  video разложены по модулям: общие статики и helpers — в internal
  _-модулях (_conio.h/_mouse.h/_gfx.h/_palette.h/_atexit.h/_time.h)
- lib/Makefile: LIBC_C = wildcard libc/*/*.c — гранулярность файлов
  = гранулярность DCE линкера
- эффект _CODE: gfx_text 6986→2568 Б, gfx_mous −1745, gfx_demo/d16
  −542; ранее timedir −3270, ls −3098, stattest −2995
- комментарии оставшихся модулей переведены на русский; puts: убран
  мёртвый pchars; videomode_raw разложен на get/set
- docs/libc-split-asm-cases.md — правила asm-связок между модулями;
  docs/libc-roadmap.md — план этапа
- восстановлен examples/mdview/SAMPLE.MD (нужен make floppy)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

lib/Makefile

@@ -20,52 +20,10 @@ CC_FLAGS  := -mz80 --no-std-crt0 --std-c99 --opt-code-size $(INC)
 
 BUILD     := $(PROJ_ROOT)/lib/build
 
-# All libc C modules.
-LIBC_C := \
-    libc/sys/atexit.c \
-    libc/conio/conio.c \
-    libc/conio/cprintf.c \
-    libc/conio/text_palette.c \
-    libc/bios/text.c \
-    libc/io/dir.c \
-    libc/video/videomode_raw.c \
-    libc/video/palette.c \
-    libc/errno/_errno_set.c \
-    libc/env/env.c \
-    libc/errno/errno.c \
-    libc/io/fsdir.c \
-    libc/io/lseek.c \
-    libc/mouse/mouse.c \
-    libc/io/open.c \
-    libc/io/read.c \
-    libc/time/sleep.c \
-    libc/time/time.c \
-    libc/time/posix_time.c \
-    libc/io/unlink.c \
-    libc/io/stat.c \
-    libc/mem/bank_io_w3.c \
-    libc/mem/bank_io_w1.c \
-    libc/mem/mem_estex.c \
-    libc/mem/mem_bios.c \
-    libc/gfx/gfx_core.c \
-    libc/gfx/gfx_palette.c \
-    libc/gfx/gfx_raw_common.c \
-    libc/gfx/gfx_raw_256.c \
-    libc/gfx/gfx_raw_16.c \
-    libc/gfx/gfx_256.c \
-    libc/gfx/gfx_16.c \
-    libc/gfx/gfx_font.c \
-    libc/gfx/gfx_text_256.c \
-    libc/gfx/gfx_text_16.c \
-    libc/stdio/getchar.c \
-    libc/stdio/putchar.c \
-    libc/stdio/puts.c \
-    libc/stdlib/minmax.c \
-    libc/file/file.c \
-    libc/stdio/hex_print.c \
-    libc/stdio/dec_print.c \
-    libc/string/strlwr.c \
-    libc/string/strupr.c
+# All libc C modules — every .c under libc/<area>/ becomes its own .rel.
+# One PUBLIC function per file (see docs/libc-split-asm-cases.md): the
+# linker pulls whole .rel modules, so file granularity == DCE granularity.
+LIBC_C := $(patsubst $(PROJ_ROOT)/%,%,$(wildcard $(PROJ_ROOT)/libc/*/*.c))
 
 # Runtime modules to bundle (pulled by symbol references from libc-using code).
 # NOTE: runtime/bank.s is NOT bundled — its trampoline depends on the banking