Docs/cleanup: refresh CONTEXT, update ISurface status, remove dead code

- rewrite CONTEXT.md for the current architecture, interfaces, netvars,
  menu tree, bones/ESP, aimbot/vischeck, triggerbot, silent aim and ABH
- update ISURFACE_STATUS.md: DrawLine slot, current menu/config path,
  9 build TUs, current file layout
- remove the stale root-level `tree` file
- drop unused class_health_off/per-class health scan (NPC HP is not
  networked), surf_call_slot, and unused scancode helpers

1 files changed, 0 insertions, 24 deletions

diff --git a/src/menu.cpp b/src/menu.cpp
index c3bb9ae..d628873 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -217,22 +217,6 @@ static std::string config_path() {
   return dir + "/config";
 }
 
-[[maybe_unused]] static const char *sdl_scancode_name(int sc) {
-  if (sc == 0)
-    return "None";
-  static char buf[32];
-  snprintf(buf, sizeof(buf), "Key%d", sc);
-  return buf;
-}
-
-[[maybe_unused]] static int parse_sdl_scancode(const char *s) {
-  if (strcmp(s, "None") == 0 || strcmp(s, "") == 0)
-    return 0;
-  if (strncmp(s, "Key", 3) == 0)
-    return atoi(s + 3);
-  return 0;
-}
-
 static void config_save() {
   FILE *f = fopen(config_path().c_str(), "w");
   if (!f)
@@ -758,14 +742,6 @@ void outer_draw() {
   surf_pop_make_current(panel);
 }
 
-// Call an arbitrary ISurface vtable slot with up to 2 long args (cdecl thiscall
-// on i386: this first, rest on stack).
-long surf_call_slot(void *surf, int slot, long a1, long a2) {
-  void **vt = *(void ***)surf;
-  using Fn = long (*)(void *, long, long);
-  return ((Fn)vt[slot])(surf, a1, a2);
-}
-
 // ---------------------------------------------------------------------------
 // ISurface discovery — try known modules and all loaded .so files
 // ---------------------------------------------------------------------------