fix(queries): stop writing keys that carry no information

Saving a generated entry wrote `"query": ""` and `"flat": true` alongside its
generator. Both reload correctly, so nothing was broken, but queries.json is
meant to be hand-edited and each redundant key is one more thing to read past.
A generated entry has no query of its own, and the sent generator already
implies flat.

Written now only when they say something, which is the rule `pinned` and
`account` already followed: `query` is skipped for a generated entry in favour
of `generated`, and `flat` is skipped when the generator implies it.

Omitting `flat` is only safe because loadSavedQueries() reapplies it from the
generator, so the two are coupled: the mutation that stops reapplying it fails
this test and one other, in both suites. That is deliberate, since a round-trip
test can otherwise pass while quietly writing less than it reads.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions