Logging: per-session file and debug-gated verbose logs

- Open /tmp/hl2hake.log once in the library constructor with "w" so each
  session starts clean, use line buffering, flush each line, and close it via
  atexit. No more fopen/fclose per message.
- Add logd() for verbose diagnostics, enabled only with HL2H_DEBUG=1.
- Move ESP/NPC scans, item-prop/item-classification logs, aimbot/silent-aim/
  melee/triggerbot/spread details, jumpbug tracking, bone dumps, netvar dumps,
  cmd-modified and ground-trace noise to logd().
- Keep logf() for lifecycle, config, warnings/errors, GUI open/close, item
  category/tagging summaries and item-crate detections so crate debugging
  works without the ESP stream.
- Supply crates now respect the max-distance slider (user change), with the
  stale comment and CONTEXT updated.
- Document HL2H_DEBUG=1 in play.sh and CONTEXT.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/menu.cpp b/src/menu.cpp
index 9d07b72..6d7143d 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -682,7 +682,7 @@ void outer_draw() {
   }
   if (font_reset && g_font) {
     g_font = 0;
-    logf("font: reset (local entity change)");
+    logd("font: reset (local entity change)");
   }
 
   bool overlay_font = true;
@@ -697,7 +697,7 @@ void outer_draw() {
         continue;
       if (surf_set_font_glyph_set(g_font, families[fi], 16, 400, 0, 0, 0x400,
                                   0x20, 0xFF)) {
-        logf("outer_draw: font family %s", families[fi]);
+        logd("outer_draw: font family %s", families[fi]);
         font_ok = true;
       } else {
         g_font = 0;