adventure: count the treasures an adventurer has actually found

A treasure_found fact turns loot into a trophy: a story-grade find lands on the
who page as a stat tile, a named row in a Treasures found showcase, and a trail
entry linking back to the dispatch. A realm-first hoard rides the priority tier
the way zone_first does, and gets the same star and callout.

The item name travels in the fact's stakes field, which the events log now keeps
(a new nullable column, backfilled to NULL for older rows). Counting is only ever
from the fact, never the vault snapshot, so a bought sword is never a trophy and a
history that predates the fact is a clean zero.

This is a new event_type, so Pete's ingest must be deployed before gogobee emits
one, or the first finds park forever on the retry ladder.

internal/web/templates/who.html

@@ -153,7 +153,7 @@
   <section class="mt-8 rounded-3xl bg-[color:var(--card)] border-2 border-[color:var(--ink)]/10 p-6 shadow-pete">
     <h2 class="font-display text-xl font-bold mb-4">The record</h2>
 
-    <div class="grid grid-cols-2 sm:grid-cols-4 gap-2">
+    <div class="grid grid-cols-2 sm:grid-cols-5 gap-2">
       <div class="rounded-2xl bg-[color:var(--ink)]/5 px-2 py-3 text-center">
         <div class="font-display text-2xl font-bold leading-none">{{.Trophies.BossKills}}</div>
         <div class="text-[10px] uppercase tracking-wider text-[color:var(--ink)]/50 mt-1.5">bosses down</div>
@@ -162,6 +162,10 @@
         <div class="font-display text-2xl font-bold leading-none">{{.Trophies.ZoneClears}}</div>
         <div class="text-[10px] uppercase tracking-wider text-[color:var(--ink)]/50 mt-1.5">zones cleared</div>
       </div>
+      <div class="rounded-2xl bg-[color:var(--ink)]/5 px-2 py-3 text-center">
+        <div class="font-display text-2xl font-bold leading-none">{{.Trophies.TreasuresFound}}</div>
+        <div class="text-[10px] uppercase tracking-wider text-[color:var(--ink)]/50 mt-1.5">treasure{{if ne .Trophies.TreasuresFound 1}}s{{end}}</div>
+      </div>
       <div class="rounded-2xl bg-[color:var(--ink)]/5 px-2 py-3 text-center">
         <div class="font-display text-2xl font-bold leading-none">{{.Trophies.Deaths}}</div>
         <div class="text-[10px] uppercase tracking-wider text-[color:var(--ink)]/50 mt-1.5">death{{if ne .Trophies.Deaths 1}}s{{end}}</div>
@@ -172,9 +176,9 @@
       </div>
     </div>
 
-    {{if or .Trophies.BossFirsts .Trophies.ZoneFirsts}}
+    {{if or .Trophies.BossFirsts .Trophies.ZoneFirsts .Trophies.TreasureFirsts}}
     <p class="mt-3 text-sm text-theme-adventure font-semibold">
-      ★ {{.Trophies.BossFirsts}} realm-first boss{{if ne .Trophies.BossFirsts 1}}es{{end}}{{if .Trophies.ZoneFirsts}}, {{.Trophies.ZoneFirsts}} first clear{{if ne .Trophies.ZoneFirsts 1}}s{{end}}{{end}} — nobody had done it before.
+      ★ {{if .Trophies.BossFirsts}}{{.Trophies.BossFirsts}} realm-first boss{{if ne .Trophies.BossFirsts 1}}es{{end}}{{end}}{{if and .Trophies.BossFirsts (or .Trophies.ZoneFirsts .Trophies.TreasureFirsts)}}, {{end}}{{if .Trophies.ZoneFirsts}}{{.Trophies.ZoneFirsts}} first clear{{if ne .Trophies.ZoneFirsts 1}}s{{end}}{{end}}{{if and .Trophies.ZoneFirsts .Trophies.TreasureFirsts}}, {{end}}{{if .Trophies.TreasureFirsts}}{{.Trophies.TreasureFirsts}} first hoard{{if ne .Trophies.TreasureFirsts 1}}s{{end}}{{end}}. Nobody had done it before.
     </p>
     {{end}}
 
@@ -208,6 +212,20 @@
       {{end}}
     </div>
 
+    {{if .Trophies.Treasures}}
+    <div class="mt-6 pt-4 border-t border-[color:var(--ink)]/10">
+      <h3 class="font-display text-lg font-bold mb-3">Treasures found</h3>
+      <ul class="space-y-1.5 text-sm max-h-56 overflow-y-auto pr-1">
+        {{range .Trophies.Treasures}}
+        <li class="flex items-baseline justify-between gap-3">
+          <span class="flex-1">💎 {{.Item}}{{if .First}} <span class="text-theme-adventure" title="first in the realm to pull this hoard">★</span>{{end}}</span>
+          {{if .Zone}}<span class="text-xs text-[color:var(--ink)]/45 shrink-0">{{.Zone}}</span>{{end}}
+        </li>
+        {{end}}
+      </ul>
+    </div>
+    {{end}}
+
     {{if .Trophies.Milestones}}
     <div class="mt-6 pt-4 border-t border-[color:var(--ink)]/10">
       <h3 class="font-display text-lg font-bold mb-3">Milestones</h3>