We only ever told Pete about outcomes. Nothing emitted when an expedition
*started*, which is why the two bored adventurers walked into dungeons and the
news feed said nothing at all — it wasn't broken, it had nothing to say.
Two halves:
A roster snapshot, pushed every 2 minutes. Deliberately NOT on the durable fact
queue: a fact is history and losing it loses it forever, so it retries. A
snapshot is a photograph of the present, and a retried one is a lie — by the
time it lands, she's moved. The next tick carries the truth. That's also what
lets Pete's staleness timer work: if we stay down, nothing arrives, and the
board stops claiming to be live instead of insisting forever that Josie is
still in holymachina.
And a "departure" bulletin when a bored adventurer lets itself out.
The snapshot omits opted-out players rather than anonymizing them, and carries a
board token distinct from every event token, so a standing row can't become the
key that links a player's dispatches back together.
The player_meta scan folds last_player_action_at/created_at in Go instead of
COALESCE()ing in SQL — modernc rebuilds time.Time from the declared column type
and COALESCE erases it. A failed scan here would publish an empty board and
every adventurer would vanish from the page.
Closes the two deferred code-review follow-ups on the adventure-news
seam, plus folds in two pre-committed WIP fixes.
A. Privacy — the public GUID no longer leaks a stable per-player id.
Replaced userHash(userID)=sha256(userID)[:6] with
eventToken(userID, discriminator)=HMAC-SHA256(salt, userID‖disc).
The salt is 32 random bytes, auto-generated once and persisted in the
durable news_config table (cached via sync.Once). Because each event
uses a distinct HMAC message, tokens are a PRF output and are BOTH
uncomputable from a Matrix handle (no enumeration of a player's
events, incl. ones anonymized after !news optout) AND mutually
unlinkable (a named event can't be walked back to a player's other,
anonymized events). Updated all emit sites: pete.go zone, dnd_combat
death, adventure_duel rival, dnd_setup arrival, achievements
milestone, bootstrap x3.
B. Taxonomy — repeat zone clears were mislabeled zone_first. Now emit
zone_clear (bulletin) vs zone_first (realm-first, priority). Adopted
the invariant GUID-prefix == event_type, which also fixes latent
permalink mislabels (achv->milestone, rival->rival_result rendered a
neutral "Dispatch" on their permalink pages).
Folded-in WIP fixes: create the news_config table b42beec's
newsEmissionOn reads but never created; reap sent pete_emit_queue rows
in RunMaintenance; don't burn a retry attempt when shutdown cancels an
in-flight send.
Tests: TestEventToken (salted/stable/per-event/persisted),
TestEmitZoneClearTaxonomy (first->zone_first, repeat->zone_clear),
updated pete_test.go prefixes. Full internal suite + vet green.
Unshipped. Deploy Pete first (it must know zone_clear), then gogobee.
