start: mirror every run to simple_lastrun.log (overwritten each start)

start.sh tees its console (exec > >(tee ...)) and exports PYTHONUNBUFFERED
so the log stays live; start.bat does the same through PowerShell
Tee-Object (UTF-16 on PS 5.1, UTF-8 on PS 7+).  The log carries card keys
and request payloads of the test cards, so it is gitignored and must not
be committed - read it for the latest server output instead of
copy-pasting the console.

.gitignore

@@ -5,3 +5,4 @@ __pycache__/
 dist/
 build/
 AGENTS.md
+simple_lastrun.log

start.bat

@@ -2,28 +2,35 @@
 REM pysim-simple-server start script for Windows
 REM Starts the server, preferring the venv if it exists.
 REM PC/SC is built into Windows, so defaults to reader 0.
+REM Every run is mirrored to simple_lastrun.log (overwritten on each start) with
+REM PowerShell Tee-Object, so the latest server output can be read without
+REM copy-pasting the console.  The log contains card keys (test cards) and is
+REM gitignored.  (Windows PowerShell 5.1 writes it as UTF-16; PowerShell 7+ as
+REM UTF-8.)
 
 set VENV_DIR=%~dp0.venv
+set LOG=%~dp0simple_lastrun.log
+set PYTHONUNBUFFERED=1
 
 if exist "%VENV_DIR%\Scripts\pysim-simple-server.exe" (
     echo Starting pysim-simple-server from venv on http://127.0.0.1:8080
-    echo Press Ctrl+C to stop.
-    "%VENV_DIR%\Scripts\pysim-simple-server.exe" --http-port 8080 -p 0 %*
+    echo Log: simple_lastrun.log (overwritten on each start^). Press Ctrl+C to stop.
+    "%VENV_DIR%\Scripts\pysim-simple-server.exe" --http-port 8080 -p 0 %* 2>&1 | powershell -NoProfile -Command "$input | Tee-Object -FilePath '%LOG%'"
     goto :eof
 )
 
 if exist "%~dp0pysim_simple_server\__main__.py" (
     echo Starting pysim-simple-server from source on http://127.0.0.1:8080
-    echo Press Ctrl+C to stop.
-    python -m pysim_simple_server --http-port 8080 -p 0 %*
+    echo Log: simple_lastrun.log (overwritten on each start^). Press Ctrl+C to stop.
+    python -m pysim_simple_server --http-port 8080 -p 0 %* 2>&1 | powershell -NoProfile -Command "$input | Tee-Object -FilePath '%LOG%'"
     goto :eof
 )
 
 where pysim-simple-server >nul 2>&1
 if %errorlevel% equ 0 (
     echo Starting pysim-simple-server on http://127.0.0.1:8080
-    echo Press Ctrl+C to stop.
-    pysim-simple-server --http-port 8080 -p 0 %*
+    echo Log: simple_lastrun.log (overwritten on each start^). Press Ctrl+C to stop.
+    pysim-simple-server --http-port 8080 -p 0 %* 2>&1 | powershell -NoProfile -Command "$input | Tee-Object -FilePath '%LOG%'"
     goto :eof
 )
 

start.sh

@@ -4,10 +4,18 @@ set -e
 # pysim-simple-server start script
 # Starts the server, preferring the venv if it exists.
 # Auto-detects PC/SC reader if available.
+# Every run is mirrored to simple_lastrun.log (overwritten on each start) so the
+# latest server output can be read without copy-pasting the console.
 
 SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 VENV_DIR="$SCRIPT_DIR/.venv"
 
+# Console + log file.  The log contains card keys and request payloads (test
+# cards) - it is gitignored and must not be committed.
+LOG_FILE="$SCRIPT_DIR/simple_lastrun.log"
+exec > >(tee "$LOG_FILE") 2>&1
+export PYTHONUNBUFFERED=1   # keep the log live: a piped stdout is block-buffered
+
 # Auto-detect reader
 READER_ARGS=""
 if command -v pcscd > /dev/null 2>&1; then
@@ -27,6 +35,7 @@ elif command -v pysim-simple-server &> /dev/null; then
     SERVER="pysim-simple-server"
 elif [ -f "$SCRIPT_DIR/pysim_simple_server/__main__.py" ]; then
     echo "Starting pysim-simple-server from source on http://127.0.0.1:8080"
+    echo "Log: simple_lastrun.log (overwritten on each start)."
     cd "$SCRIPT_DIR" && python3 -m pysim_simple_server --http-port 8080 $READER_ARGS "$@"
     exit $?
 else
@@ -37,6 +46,7 @@ else
 fi
 
 echo "Starting pysim-simple-server on http://127.0.0.1:8080"
+echo "Log: simple_lastrun.log (overwritten on each start)."
 echo "Press Ctrl+C to stop."
 echo "Extra arguments are passed to the server (e.g. ./start.sh --gsmtap)."
 $SERVER --http-port 8080 $READER_ARGS "$@"