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, 1 insertions, 0 deletions

diff --git a/play.sh b/play.sh
index 4e52b6c..ff756aa 100755
--- a/play.sh
+++ b/play.sh
@@ -1,6 +1,7 @@
 #!/bin/sh
 # Launch HL2 with hl2hake preloaded (through Steam's bundled 32-bit runtime).
 # Extra args are passed to the game, e.g.: ./play.sh -windowed +map d1_trainstation_01
+# Set HL2H_DEBUG=1 to include verbose diagnostic logging.
 set -e
 GAME="$HOME/.local/share/Steam/steamapps/common/Half-Life 2"
 LIB="$(cd "$(dirname "$0")" && pwd)/libhl2hake.so"