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.

frontend/help.html

@@ -327,6 +327,7 @@
 		<li><strong>Pass-through (card destination)</strong> — no listener and no target: the terminal connects each BIP channel to the destination the card requests in OPEN CHANNEL (Other address + Transport level port, TCP client remote only; the specs define no default port, so an incomplete request fails the channel). TLS is terminated by that platform, and the server's network is used (lab only).</li>
 		<li><strong>Capture (dump)</strong> — accepts the card's TCP channel and logs whatever it sends (e.g. the TLS ClientHello) without answering.</li>
 	</ul>
+	<p class="mb-2">The <strong>Options</strong> block (applied at <strong>Start</strong>, remembered in the browser) exposes the HTTP framing &mdash; <strong>chunked</strong> body / <strong>chunk size</strong> (0 = the whole response in one TLS record), keep-alive, the Connection header, compact headers and the Next-URI (unchecked = omit the header) &mdash; and the script framing (indefinite <code class="font-mono text-sm">AE 80 …</code> / definite <code class="font-mono text-sm">AA</code> Command Scripting template, comprehension-required tags, targeted application). <strong>Link events</strong> (Channel status ENVELOPEs, TS 102 223 &sect;7.5.11) apply to every mode. TLS itself has no settings: the listener offers TLS 1.0&ndash;1.2 and all PSK suites and lets the card negotiate; the state line and the TLS log show the version/cipher actually used, and a handshake that fails for a TLS/cipher reason is logged as <code class="font-mono text-sm">tls-handshake-failed</code>.</p>
 	<p class="mb-2"><strong>Script</strong> selects the command list served over the session — <strong>None</strong> (leave the server's configured script) or one of the scripts from the <strong>Scripts</strong> pill; the chosen list is sent to the server when the listener starts.</p>
 	<p class="text-sm mb-3">The state line shows the listener, the negotiated identity and live channels (bytes in/out). <strong>Script results (R-APDUs)</strong> lists each served C-APDU with its R-APDU/SW and a <em>done/total</em> progress; the <strong>HTTP OTA log</strong> records OPEN/CLOSE CHANNEL, SEND/RECEIVE DATA and every TLS/HTTP/script step (<code class="font-mono text-sm">tls-handshake</code>, <code class="font-mono text-sm">tls-request</code>, <code class="font-mono text-sm">script-send</code>, <code class="font-mono text-sm">script-rapdu</code>, <code class="font-mono text-sm">script-page</code>, <code class="font-mono text-sm">script-done</code>, <code class="font-mono text-sm">data-available</code>, <code class="font-mono text-sm">peer-close</code>), with <strong>Clear</strong>.</p>
 	<h3 id="scp81-scripts" class="text-lg font-medium mb-2">5.2 Scripts</h3>