The release selector lives in the preset rather than a global chip: presets
already travel with the card (ICCID auto-selection, export/import), and the
operations that will consume the release are preset-aware.
- presets.py: the optional `release` field (4-18; empty = unspecified) joins
PRESET_FIELDS; a value outside 4-18 is refused on save/import; the store
schema version is 5.
- catrelease.py: DEFAULT_RELEASE = 12 and preset_release() - the effective
release is the preset's own value, else Rel-12 (the safe level for cards
whose release is not known; an unset release never filters anything away).
The PWA mirrors both (CAT_RELEASE_DEFAULT + presetRelease()), drift-guarded.
- Cards tab: the editor's header row gains a compact CAT release select
(unspecified / pre-Rel-6 stored as 5 / Rel-6 ... Rel-18); the empty option
names the Rel-12 default and the tooltip explains the guard; the field is
collected, cleared and restored with the other form fields.
- Nothing filters yet: the Simulator's event parameters (stage 3) will use
the effective release.
- docs/api.md + help EN/RU updated; sw cache simple-v368.