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, 3 insertions, 2 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 7a1ee33..0ecf80c 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -284,8 +284,9 @@ vocabulary / decisions.
 - Scans the client entity list every 100 ms and tags health, ammo, armor/suit,
   world weapon pickups, the two supply-crate models and generic items.
 - Each tag is a colored marker with a name and optional distance, filtered by
-  category toggles and a max-distance slider (default 5000 units). Drawn
-  through walls and independently of the hostile NPC ESP.
+  category toggles and a max-distance slider (default 5000 units; 0 means
+  unlimited and displays as "All"). Drawn through walls and independently of
+  the hostile NPC ESP.
 - Ammo labels are specific where the model is known: pistol, SMG, AR2, .357,
   crossbow, shotgun, sniper, flares, AR2 grenade, RPG rocket, plus ammo-crate
   variants. Unknown ammo falls back to "Ammo".