- Store source files as named CustomInstrumentFile rows per def
- Render sidebar with disclosure groups
- Drive editor via Monaco project models with activePath
- Validate Add/Rename/Delete dialogs and submit on Enter
- Fork installed hook packs into editable custom instruments
- Reload instances on def change; clear stale compat reasons live
- Focus editor on selection (native + Monaco)
Each instrument carries an InstrumentCompatibility (platforms,
osIDs, archs; nil set means any). Hook pack manifests and custom
defs declare it; tracer and codeshare default to universal.
System parameters are queried lazily via SystemParametersCache,
keyed by device id and invalidated when devices disappear.
Restoring an incompatible instrument now marks it with a reason
on its InstrumentRef instead of attaching.
Ole André Vadla Ravnås