v3.35.0: EF.SMSP decoded editor (the full SMS-parameter form)

TS 31.102 4.2.27 scope: alpha; TP-DA and TS-SCA with their own length
conventions (DA = digits, SCA = octets, 0 = default SMSC) and a TON
select; TP-PID; TP-DCS with TS 23.038 hints; the relative TP-VP with the
TS 23.040 ladder; a per-parameter "absent (the ME default applies)"
state.  Unchanged slots are copied verbatim (the live fixture's
DCS-absent 00 and present VP FF survive), alphanumeric TON-5 addresses
stay read-only, and every checked record is validated before any write.

Decoder fixes: the parameter-indicator bits were shifted (SCA on 5,
PID on 2, DCS on 3, VP on 4; the spec is DA/SCA/PID/DCS/VP on bits 1-5
with 6-8 reserved, 1 = absent), and the TP-DA length was read as octets
instead of digits (TS 23.040 9.1.2.5).

Live fixture: ffffffffffffffffffffffffffe9ffffffffffffffffffffffff07919733824009f0ffffffff0000ff
(SCA +79332804900, PID 00, DCS absent/00, VP FF) round-trips
byte-identically.

1022 Python + 1058 frontend green; simple-v468.

frontend/help.html

@@ -408,7 +408,7 @@
 	<ul class="list-disc list-inside text-sm space-y-1 mb-3">
 		<li><strong>Read raw / Read decoded</strong> — read the selected file as a hex dump or as a decoded field table (client-side EF decoders: IMSI, ICCID, SPN, PLMN lists, LOCI/PSLOCI/EPSLOCI, ADN/MSISDN, service tables, SUME, …); the decoded table is built in the browser from the same raw bytes (no server-side decode). The highlighted pill is the current view; clicking either pill (re-)reads the file. <strong>Read decoded</strong> is disabled when the client-side decoders do not cover the file (name/FID check, before reading).</li>
 		<li><strong>Edit raw</strong> — edit the raw hex data, <strong>Save</strong> to write back (or <strong>Cancel</strong>); transparent files use a textarea, record files one input per record with selection checkboxes. <strong>Edit raw</strong> switches to the hex view first and reads the file if needed.</li>
-		<li><strong>Edit decoded</strong> — edit the file through its own decoded form, encoded in the browser and written with the normal update path. The encoders cover <strong>EF.SPN</strong>, <strong>EF.PNN</strong>, the PLMN lists (<strong>PLMNsel / FPLMN / EHPLMN</strong> and the access-technology lists <strong>PLMNwAcT / OPLMNwAcT / HPLMNwAcT</strong>), the dialling-number files (<strong>ADN / FDN / SDN / MSISDN / LND / BDN</strong>), the service tables (<strong>UST / IST / EST</strong>; <strong>SST</strong> stays read-only until the SIM allocated/activated editor exists), <strong>ACC</strong>, <strong>PHASE</strong>, <strong>HPPLMN</strong>, <strong>AD</strong>, <strong>ICCID / IMSI</strong> (behind a confirmation — writing them changes the card identity) and the cell-broadcast lists (<strong>CBMI / CBMID / CBMIR</strong>). A transparent file gets one form (SPN fields, PLMN rows with add/remove, PNN items with add/remove); a record file gets one form per record with a selection checkbox that is auto-checked when a field changes, so only the edited records are written. <strong>Save</strong> validates every selected record before writing anything; files without an encoder keep the button disabled with a tooltip. Extension pointers (EF.EXT1–EF.EXT5) and the BDN comparison-method byte are preserved, and editing a number that continues in an extension file is refused.</li>
+		<li><strong>Edit decoded</strong> — edit the file through its own decoded form, encoded in the browser and written with the normal update path. The encoders cover <strong>EF.SPN</strong>, <strong>EF.PNN</strong>, the PLMN lists (<strong>PLMNsel / FPLMN / EHPLMN</strong> and the access-technology lists <strong>PLMNwAcT / OPLMNwAcT / HPLMNwAcT</strong>), the dialling-number files (<strong>ADN / FDN / SDN / MSISDN / LND / BDN</strong>), the service tables (<strong>UST / IST / EST</strong>; <strong>SST</strong> stays read-only until the SIM allocated/activated editor exists), <strong>ACC</strong>, <strong>PHASE</strong>, <strong>HPPLMN</strong>, <strong>AD</strong>, <strong>ICCID / IMSI</strong> (behind a confirmation — writing them changes the card identity) the cell-broadcast lists (<strong>CBMI / CBMID / CBMIR</strong>) and <strong>EF.SMSP</strong> (the full SMS-parameter form: alpha, TP-DA and TS-SCA with their addressing rules and TON, TP-PID, TP-DCS and the relative TP-VP, each with an <em>absent (the ME default applies)</em> toggle and live DCS/validity hints). A transparent file gets one form (SPN fields, PLMN rows with add/remove, PNN items with add/remove); a record file gets one form per record with a selection checkbox that is auto-checked when a field changes, so only the edited records are written. <strong>Save</strong> validates every selected record before writing anything; files without an encoder keep the button disabled with a tooltip. Extension pointers (EF.EXT1–EF.EXT5) and the BDN comparison-method byte are preserved, and editing a number that continues in an extension file is refused.</li>
 		<li><strong>Probe all files</strong> — walks the whole tree (including custom files) and marks every entry present (normal) or absent (red ✗, no expand arrow); empty-but-present DFs show <code class="font-mono text-sm">(empty)</code>. Shows progress <em>N / total</em>, can be stopped, and finishes with a present/absent summary. Files are only verified when expanded or probed — browsing stays lazy.</li>
 		<li><strong>ADM</strong> — files that need the administrator PIN fail with <code class="font-mono text-sm">6982</code>/<code class="font-mono text-sm">9804</code>; if the matching card preset (same ICCID) carries an ADM key, a <strong>Verify ADM</strong> button appears next to the error and the header badge (<code class="font-mono text-sm">ADM ✓/✗ ⚿</code>) becomes clickable. Every wrong key consumes an attempt: the remaining attempts are shown and a retry asks for confirmation. A blocked ADM cannot be recovered here — it needs the card&rsquo;s unblock key.</li>
 	</ul>