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

pyproject.toml

@@ -3,16 +3,16 @@ requires = ["setuptools", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [project]
-name = "pysim-otaman-server"
-version = "2.2.21"
-description = "HTTP REST server wrapping pysim for the OTAMan PWA"
+name = "pysim-simple-server"
+version = "2.3.0"
+description = "HTTP REST server wrapping pysim for the SIMple PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.
 # Declaring it here would make pip resolve its full tree (including the SMPP
 # bridge -> Twisted -> twisted-iocpsupport, which needs MSVC on Windows).
 
 [project.scripts]
-pysim-otaman-server = "pysim_otaman_server.__main__:main"
+pysim-simple-server = "pysim_simple_server.__main__:main"
 
 [tool.setuptools.packages.find]
-include = ["pysim_otaman_server*"]
+include = ["pysim_simple_server*"]