v3.34.0: Edit decoded wave 2 — service tables, scalars, PLMN lists, BCD, CB lists

New client-side editors: the service tables EF.UST/IST/EST (a filterable
bit grid; unmodelled bits and the file length preserved), EF.ACC,
EF.PHASE, EF.HPPLMN, EF.AD (op-mode enum, additional info, MNC length
incl. 0 and the 3-byte SIM form), the PLMN-only lists
EF.PLMNsel/FPLMN/EHPLMN, EF.ICCID/EF.IMSI behind a confirmation, and the
cell-broadcast lists EF.CBMI/CBMID/CBMIR.

Framework: a bits form kind, a per-entry model(dec) hook, a per-entry
confirm prompt and hex fields.

Decoder fixes: EF.ACC class numbering (byte1 b8..b1 = 15..8, byte2 =
7..0), EF.AD operation mode (whole byte) and its MNC length rules,
EF.SST decoded with the SIM 2-bit allocated/activated layout (editing
stays disabled until that UI exists), and the EF.IMSI parity nibble
(9 odd / 1 even).  A no-edit save of the new list files no longer
writes all-FF (the collected rows and the encoders disagreed on the
value shape).

Decoded editing for EF.DIR/EF.ARR/EF.SMS/EF.PBR is postponed by
decision (read-only viewing is enough); the survey records it.

1022 Python + 1033 frontend green; simple-v467.

frontend/sw.js

@@ -1,4 +1,4 @@
-const CACHE = 'simple-v466';
+const CACHE = 'simple-v467';
 const URLS = [
   'index.html',
   'help.html',