Item ESP: make 0 = unlimited explicit and persistent

- config_load now accepts max_dist=0 instead of clamping it to 250, so the
  "unlimited" setting survives a restart.
- The Max distance slider shows "All" at 0 and its tooltip documents 0 =
  unlimited; the categories log prints max=All.
- Skip unclassified entities before projecting them / computing distance.
- Keep the removed prop/crate debug logging and the user's rule that the
  distance slider applies to every tag.

1 files changed, 9 insertions, 3 deletions

diff --git a/src/gui.cpp b/src/gui.cpp
index e826ba9..b512ef3 100644
--- a/src/gui.cpp
+++ b/src/gui.cpp
@@ -193,6 +193,7 @@ struct Ctrl {
   int *ival;  // CK_SLIDER
   int min, max;
   int action; // CK_BUTTON
+  bool zero_unlimited; // slider: value 0 displays as "All"
 };
 
 struct Card {
@@ -243,6 +244,7 @@ static void add_ctrl(int card, int kind, const char *label, const char *desc,
   c.min = min;
   c.max = max;
   c.action = action;
+  c.zero_unlimited = false;
   g_cards[card].n++;
 }
 static void add_toggle(int card, const char *label, const char *desc,
@@ -364,8 +366,9 @@ static void build_cards() {
   add_toggle(items, "Show distance", "Append the distance in units.",
              &g_item_distance);
   add_slider(items, "Max distance",
-             "Items farther away than this are not tagged.", 250, 10000,
-             &g_item_max_dist);
+             "0 = unlimited; otherwise items farther away are hidden.", 0,
+             10000, &g_item_max_dist);
+  g_ctrls[g_nctrl - 1].zero_unlimited = true;
 
   int spread = add_card(3, &g_spread, "Spread control",
                         "Choose a server shot seed that tightens the cone.",
@@ -1290,7 +1293,10 @@ static void draw_slider(const Rect &clip, const Rect &cr, int y, int rh,
   int kx = track.x + fw - S(4.0f);
   fill(Rect{kx, track.y - S(4.0f), S(8.0f), S(16.0f)}, C_ACCENT, &clip);
   char val[32];
-  snprintf(val, sizeof(val), "%d", value);
+  if (ct.zero_unlimited && value == 0)
+    snprintf(val, sizeof(val), "All");
+  else
+    snprintf(val, sizeof(val), "%d", value);
   text_in(clip, cr.x + cr.w - S(52.0f), y + (rh - g_body_h) / 2, val,
           g_font_body, g_body_h, 0, C_TEXT);
 }