native: perf telemetry, 2 frames in flight, 120 Hz pacing, GPU shadow map

- --perf-log CSV + logcat telemetry (perf_log.h, EterBase/PerfCounters.h),
  incl. display refresh rate / app vsync rate, thermal, CPU clocks;
  tools/pull_perf_logs.sh + tools/perf_summary.py
- Vulkan renderer: two frames in flight, in-frame texture uploads (no
  vkQueueWaitIdle), --fps-cap / --refresh-rate / --frames-in-flight
- Android: ANativeWindow_setFrameRate, ADPF performance hint,
  appCategory=game (ColorOS no longer drops to 60 Hz when idle)
- Character shadow map rendered on the GPU into an offscreen render target
  instead of CPU rasterization + per-frame 1 MB upload; --cpu-shadow keeps
  the old path. Device (120 Hz, 32 mobs): 75 -> ~115 fps, script thread
  8.9 -> 3.4 ms. draw_capture format v10.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/pull_perf_logs.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+# Copies the Android client's --perf-log files (native_render/perf_log.h) to ./perf-logs and prints a
+# summary of the newest one. The phone must be connected with USB debugging; the files can also be
+# taken off the phone without a PC from Android/data/org.metin2port.client/files/perf.
+set -e
+PKG=org.metin2port.client
+OUT=${1:-perf-logs}
+mkdir -p "$OUT"
+adb pull "/sdcard/Android/data/$PKG/files/perf/." "$OUT"
+newest=$(ls -t "$OUT"/perf-*.csv 2>/dev/null | head -1)
+[ -n "$newest" ] && python3 "$(dirname "$0")/perf_summary.py" "$newest"