Two fixes needed to make the DM harness actually pass end-to-end:
1. Bind the loopback relay to 127.0.0.2 instead of 127.0.0.1.
Quartz's `RelayTag.parse` (called from `ChatMessageRelayListEvent.
relays()`) rejects any URL for which `isLocalHost()` returns true —
the substring check matches `"127.0.0.1"` among others. That means a
kind:10050 event whose `relay` tag reads `ws://127.0.0.1:8090/`
silently parses to an empty relay list, and `RecipientRelayFetcher`
reports `dmInbox == []`. Under strict mode `dm send` then correctly
refuses with `no_dm_relays` — hiding an otherwise-valid test setup.
`127.0.0.2` is the cleanest fix: still pure loopback (no network
traffic, no config needed), not matched by `isLocalHost()`, and
Linux binds any IP in 127.0.0.0/8 without setup. The Marmot harness
is unaffected because its tests never depend on parsing their own
kind:10051/10002 relay tags back out — they hit the bootstrap
fallback path.
marmot/setup.sh's `start_local_relay` now reads `${RELAY_HOST:-
127.0.0.1}` so both harnesses can share it; the DM harness sets
`RELAY_HOST=127.0.0.2` by default and exposes `--host` as an escape
hatch.
2. Replace dm-06 cursor-advance check with `--since` filter check.
The original assertion ("second no-flag `dm list` returns 0") was
wrong for the actual design: `filterGiftWrapsToPubkey` always
subtracts a 2-day lookback from `since` (required to catch NIP-59's
randomised `created_at`), so a repeat no-flag query legitimately
re-pulls everything in the last two days. The cursor advances the
scan window for efficiency, not for idempotency. dm-06 now verifies
`--since` actually filters: query with `--since <newest + 2 days +
1 hour>` — after the filter's lookback subtraction, the effective
floor lands past every message, and the list comes back empty.
Also: added `protoc` to the DM preflight checks so the missing-dep
error comes before 4 failed cargo retries.
Result on this machine: 6/6 pass, two clean runs in a row.
Claude
b8a642b406