The file manager gains a client-side decoded editor. EF_ENCODERS pairs
each editable EF with a pure encoder and a form schema (fields / list /
items); the file is read raw, the decoder fills the form, the browser
re-encodes it and the existing update path writes it.
Shapes: SPN (display-condition bits + Annex A text), PLMNwAcT/
OPLMNwAcT/HPLMNwAcT (rows with PLMN + ACT, add/remove),
ADN/FDN/SDN/MSISDN/LND/BDN (one form per record with a checkbox that
auto-checks on change; BCD, length and EXT handling; BDN's own X+15
layout) and PNN (per-record TLV items 43/45/80, add/remove, unknown
TLVs preserved).
Unchanged fields are copied verbatim (SSC/extended-BCD numbers, PLMN
rows including unmodelled satellite ACT bits, PNN codings/AddCI bits,
all-FF files, the BDN comparison-method byte), every checked record is
validated and encoded before anything is written, and edits that would
break a reference are refused.
Also: docs/decoded-editing.md (the spec survey behind the design and
the release waves), the efPlmnAct EC-GSM-IoT-only 0x88 fix, the PNN
spare-bit decode fix, and the /api/write|read cmd2-exception
false-success fix.
1022 Python + 1013 frontend green; simple-v466.
