Merge pysim-otaman-server into otaman (monorepo, v1.7.0)

- Move PWA into frontend/; server package at pysim_otaman_server/
- Server now serves the PWA (same origin -> no CORS/PNA): static file handler
  + --web-dir flag + injects window.PYSIM_EMBEDDED marker into index.html
- Frontend defaults to relative API base when embedded (pysimBase = '')
- Version 1.7.0 aligned: server.py VERSION, pyproject.toml, PWA header
- SW cache bump otaman-v7 -> otaman-v8
- Docs: combined README + docs/api.md endpoint reference; update links
- Fix stale package.json repository URL

start.bat

@@ -0,0 +1,33 @@
+@echo off
+REM pysim-otaman-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
+    echo Press Ctrl+C to stop.
+    "%VENV_DIR%\Scripts\pysim-otaman-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
+    echo Press Ctrl+C to stop.
+    python -m pysim_otaman_server --http-port 8080 -p 0
+    goto :eof
+)
+
+where pysim-otaman-server >nul 2>&1
+if %errorlevel% equ 0 (
+    echo Starting pysim-otaman-server on http://127.0.0.1:8080
+    echo Press Ctrl+C to stop.
+    pysim-otaman-server --http-port 8080 -p 0
+    goto :eof
+)
+
+echo Error: pysim-otaman-server not installed.
+echo Run setup.bat first or install manually:
+echo   pip install pysim-otaman-server
+pause