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.

CHANGELOG.md

@@ -9,6 +9,28 @@ every change carries a descriptive commit message.
 
 ## [Unreleased]
 
+## [3.35.0] — 2026-10-23
+
+### Added
+
+- **EF.SMSP decoded editor** — the full SMS-parameter form (TS 31.102 §4.2.27): alpha,
+  TP-Destination Address and TS-Service Centre Address (each with its own length
+  convention and a TON select; an empty SCA means the default SMSC), TP-PID, TP-DCS and
+  the relative TP-VP — every parameter with an *absent (the ME default applies)* toggle.
+  Live hints decode the DCS (TS 23.038 §4: coding group, alphabet, class, compression,
+  message-waiting) and the relative validity period (TS 23.040 §9.2.3.12.1).  Unchanged
+  parameters keep their exact bytes (a card quirk such as a DCS marked absent with byte
+  `00` survives), alphanumeric TON addresses are preserved read-only, and all checked
+  records are validated before anything is written.
+
+### Fixed
+
+- `efDecSmsp` mapped the parameter indicators shifted (SCA on bit 5, PID on bit 2, DCS
+  on bit 3, VP on bit 4); the spec order is DA/SCA/PID/DCS/VP on bits 1–5 with bits 6–8
+  reserved — a record with a mixed indicator (e.g. `E9`) showed DCS and hid VP.
+- The read-only EF.SMSP view decoded the TP-DA length as octets, although it is the digit
+  count (TS 23.040 §9.1.2.5); a slot padded with `00` gained phantom digits.
+
 ## [3.34.0] — 2026-10-23
 
 ### Added