Verbatim move of the per-decky mutation-interval modal (~60 LOC)
into its own file. Saves null when the toggle is off, minutes
otherwise.
- New DeckyFleet/IntervalEditor.tsx
- IntervalEditor.test.tsx covers null-current disabled path,
numeric-current enabled path, and CANCEL not firing onSave.
- src/test/fixtures/decky.ts now derives DeckyFixture from the
canonical Decky type (the fixture's loose swarm shape was
missing host_address/host_status; aligning to Decky catches
that statically).
anti
b6ff288dcf