Pete Adventure News: emit seam, !news command, cold-start backfill

gogobee's game-side of Pete's push-based Adventure news feed. Emits
structured event *facts* (not prose) to Pete's ingest endpoint over a
durable queue; Pete owns voice/authoring/publishing.

- internal/peteclient: durable pete_emit_queue + retry sender; Fact
  payload; FEATURE_PETE_NEWS master switch.
- pete.go: emitFact enforces runtime kill-switch + per-player opt-out
  (anonymize, never drop); zone-clear + realm-first tiering; !news
  command (player optout/optin, admin on/off).
- bootstrap_pete_news.go: cold-start backfill replays deaths +
  single-holder achievements + zone realm-firsts, backdated + NoPush,
  idempotent, fires only once the seam is live; seeds news_realm_firsts.
- Emit sites: death, zone_first, rival_result, milestone, arrival.
- db.go: pete_emit_queue, news_optout (+opted_out_at), news_realm_firsts.

Unshipped. Deploy Pete first, then set FEATURE_PETE_NEWS + ingest env.

Claude-Session: https://claude.ai/code/session_017mEwUmmS7aQTP2NQXj6rUa

internal/peteclient/client_test.go

@@ -0,0 +1,91 @@
+package peteclient
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"sync"
+	"testing"
+
+	"gogobee/internal/db"
+)
+
+// TestEmitDrainRoundTrip proves the durable path: Emit queues a fact, the sender
+// POSTs it to Pete with bearer auth, and the row is marked sent (so it won't
+// re-send), while a duplicate GUID collapses to one delivery.
+func TestEmitDrainRoundTrip(t *testing.T) {
+	if err := db.Init(t.TempDir()); err != nil {
+		t.Fatal(err)
+	}
+
+	var mu sync.Mutex
+	var got []Fact
+	var gotAuth string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/api/ingest/adventure" {
+			t.Errorf("unexpected path %q", r.URL.Path)
+		}
+		body, _ := io.ReadAll(r.Body)
+		var f Fact
+		_ = json.Unmarshal(body, &f)
+		mu.Lock()
+		got = append(got, f)
+		gotAuth = r.Header.Get("Authorization")
+		mu.Unlock()
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	std = &Client{cfg: Config{IngestURL: srv.URL, Token: "tok", Enabled: true}, http: srv.Client()}
+
+	Emit(Fact{GUID: "death:a:1", EventType: "death", Tier: "priority", Subject: "Brannigan", OccurredAt: 1})
+	Emit(Fact{GUID: "death:a:1", EventType: "death", Tier: "priority", Subject: "Brannigan", OccurredAt: 1}) // dup guid
+
+	std.drain(context.Background())
+
+	mu.Lock()
+	defer mu.Unlock()
+	if len(got) != 1 {
+		t.Fatalf("delivered %d facts, want 1 (dup should collapse)", len(got))
+	}
+	if got[0].Subject != "Brannigan" {
+		t.Errorf("subject = %q", got[0].Subject)
+	}
+	if gotAuth != "Bearer tok" {
+		t.Errorf("auth header = %q", gotAuth)
+	}
+
+	var pending int
+	if err := db.Get().QueryRow(`SELECT count(*) FROM pete_emit_queue WHERE sent_at IS NULL`).Scan(&pending); err != nil {
+		t.Fatal(err)
+	}
+	if pending != 0 {
+		t.Errorf("%d rows still pending after successful drain", pending)
+	}
+
+	// A second drain re-sends nothing.
+	std.drain(context.Background())
+	if len(got) != 1 {
+		t.Errorf("re-drained a sent row: %d deliveries", len(got))
+	}
+}
+
+// TestEmitDisabledNoQueue: when disabled, Emit is a durable no-op.
+func TestEmitDisabledNoQueue(t *testing.T) {
+	if err := db.Init(t.TempDir()); err != nil {
+		t.Fatal(err)
+	}
+	std = &Client{cfg: Config{Enabled: false}, http: http.DefaultClient}
+	Emit(Fact{GUID: "disabled-guid", EventType: "death", OccurredAt: 1})
+	var n int
+	// db.Init is a process singleton, so this may share state with other tests;
+	// scope the check to this fact's guid.
+	if err := db.Get().QueryRow(`SELECT count(*) FROM pete_emit_queue WHERE guid = 'disabled-guid'`).Scan(&n); err != nil {
+		t.Fatal(err)
+	}
+	if n != 0 {
+		t.Errorf("disabled Emit queued %d rows, want 0", n)
+	}
+}