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

docs/scp81-findings.md

@@ -5,7 +5,7 @@ Purpose: record **every attempted configuration and its outcome**, so the same
 variations are not repeated. Add rows as tests are run; keep the confirmed
 rules section current.
 
-Setup: `pysim_otaman_server` with a PC/SC reader, the PWA SCP81 tab (or
+Setup: `pysim_simple_server` with a PC/SC reader, the PWA SCP81 tab (or
 `POST /api/scp81/bip`), the card triggered by its SMS-PP push / the Location
 status event. Server log at `GET /api/scp81/log`, script state at
 `GET /api/scp81/script`, proactive history at `GET /api/proactive-log`.