The L1 surface, group by group

The numbered 162, mapped to where each group's declarations live. (Regenerate the raw tables any time: make api-docs -> INTERFACES.md - every declaration with file and line.)

Group 1-57 - the core foundation

The original extension surface: framebuffer access (l1_ext_fb_get_info), the font-engine registration protocol (l1_ext_register_font_engine + the screen_font_engine ops struct), the console hook (l1_ext_set_console_hook / l1_ext_console_hook), configuration (l1_ext_config_read/write/get_all), the update chain entry (l1_ext_check_update + async), power (shutdown/suspend/halt/reboot

• suspend returns 0 after a live S3 resume), and the shell bridge (l1_ext_shell_register_command_ex, list_commands_a_z / by_wp). All in l1/l1_ext.h.

+8 - block driver items

driver_block_register / read / write / flush (+ set_ops), driver_block_ahci_init, driver_block_nvme_init, driver_block_ata_dma_init (each taking the discovered pci_dev). drivers/block/driver_block_blk.h.

+13 - NIC driver items

driver_nic_register / send / recv / link_status / get_mac plus the per-family init entry points (e1000e, igb, ixgbe, rtl8139, rtl8168, rtl8125, rtl810x, bcm57xx). drivers/nic/driver_nic.h.

+7 - A/B update items

The ota_ab family: slots, flags, verify, install. kernel/ota/ota_ab.h.

+26 - sound driver items

driver_snd_register / play / stop / set_rate / set_volume / get_caps + probe_all/make_tone + the per-hw init entries (hda, ac97, sb16, es1370, virtio) + the lookup/listing helpers. drivers/snd/driver_snd.h.

+11 - dynamic loading

elf_load_dynamic, ldso_run, so_load/so_unload, symbol_resolve, dlsym_impl/dlopen_impl/dlclose_impl, reloc_apply, elf_get_needed. l1/l1_wp8b.h.

+7 - shell built-ins and jobs

shell_run, shell_register_builtin / unregister_builtin, tool_register / tool_list, job_create / job_list / job_control. l1/l1_wp8cd.h.

+9 - process/fd/memory API

sys_proc_exec / sys_proc_exit, pipe_create, fd_dup / fd_dup2, signal_send / signal_return, sys_mem_mmap / munmap / mprotect / brk, sys_chdir - the Unix-shaped surface userprogs/ builds on. l1/l1_wp8a.h.

+8 - TUI extension items

The first TUI declarations in tui/tui_ext.h.

+16 - watchdog/logging/health

klog 6 (klog_write / set_level / set_level_enabled / flush / rotate / filter_set, kernel/lib/lib_klog.h lines 72-106) + watchdog 5 (register / start / feed / stop / set_timeout, kernel/core/core_watchdog.h lines 74-83) + health 5 (get_cpu / get_mem / get_tasks / get_io / export, kernel/core/core_health.h lines 76-85).

Outside the numbering (documented, real)

• config/check-update: 5 interfaces.
• rule-9 self-hosting: 5 interfaces (the in-kernel GRUB payload behind install/abdisk/grub-install).
• The full TUI widget surface beyond the numbered 8 (37 declarations total in tui/tui_ext.h).