scp81: UI framing options, permissive TLS, drop the Apache-header mimicry (v2.2.14)

Listener Options block (applied at Start, persisted in localStorage, Reset to
defaults): HTTP framing - chunked body, chunk size (0 = one TLS record),
keep-alive, Connection header, compact headers, Next-URI (unchecked = omit);
script framing - indefinite/definite Command Scripting template, CR tag,
targeted app; link events (now parsed on the common start path, so every mode
honors them). scp81OptionsFromForm() is unit-tested.

TLS is automatic: 'auto' (min 1.0, max 1.2 + :@SECLEVEL=0) is the new
default, all six PSK suites are offered and OpenSSL negotiates the highest;
the negotiated version/cipher is logged (tls-handshake) and reported as
version_seen/cipher_seen in /api/scp81/status, and a handshake failing for a
TLS/cipher reason logs tls-handshake-failed (post-handshake record errors
stay tls-error). tls_version/cipher/keylog/answer_delay stay as API-only pins.

Dropped the Apache-style header mimicry completely: no Date/Server/
X-Powered-By, no Content-Length-before-Content-Type ordering, no Content-Type
on 204 - the minimal response set is X-Admin-Protocol (+ X-Admin-Next-URI /
Targeted-Application), Content-Type on 200s, and Transfer-Encoding or
Content-Length per the chunked flag. Docs, help (EN/RU), READMEs and the
AGENTS notes updated; SW cache otaman-v180.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-otaman-server"
-version = "2.2.13"
+version = "2.2.14"
 description = "HTTP REST server wrapping pysim for the OTAMan PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.