rename OTAMan → SIMple (v2.3.0)

- package pysim_otaman_server → pysim_simple_server; distribution and
  console script pysim-otaman-server → pysim-simple-server
- PWA branding SIMple: title, header, manifest, help EN/RU, GitHub links
- localStorage keys otaman_* → simple_* (clean break, no migration)
- export filenames simple-cards.json / simple-custom-files.json
- service worker cache simple-v189
- README/docs/setup/start scripts updated; no 'otaman' left in the tree

start.bat

@@ -1,33 +1,33 @@
 @echo off
-REM pysim-otaman-server start script for Windows
+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.
 
 set VENV_DIR=%~dp0.venv
 
-if exist "%VENV_DIR%\Scripts\pysim-otaman-server.exe" (
-    echo Starting pysim-otaman-server from venv on http://127.0.0.1:8080
+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-otaman-server.exe" --http-port 8080 -p 0
+    "%VENV_DIR%\Scripts\pysim-simple-server.exe" --http-port 8080 -p 0
     goto :eof
 )
 
-if exist "%~dp0pysim_otaman_server\__main__.py" (
-    echo Starting pysim-otaman-server from source on http://127.0.0.1:8080
+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_otaman_server --http-port 8080 -p 0
+    python -m pysim_simple_server --http-port 8080 -p 0
     goto :eof
 )
 
-where pysim-otaman-server >nul 2>&1
+where pysim-simple-server >nul 2>&1
 if %errorlevel% equ 0 (
-    echo Starting pysim-otaman-server on http://127.0.0.1:8080
+    echo Starting pysim-simple-server on http://127.0.0.1:8080
     echo Press Ctrl+C to stop.
-    pysim-otaman-server --http-port 8080 -p 0
+    pysim-simple-server --http-port 8080 -p 0
     goto :eof
 )
 
-echo Error: pysim-otaman-server not installed.
+echo Error: pysim-simple-server not installed.
 echo Run setup.bat first or install manually:
-echo   pip install pysim-otaman-server
+echo   pip install pysim-simple-server
 pause