/trace grows a turn-decisions table under the rule trace (V-564)

Both tables answer the same question, who won and who lost, one about nudges
and the other about utterances, so they share a page rather than splitting the
nav. A turn is one collapsible row; never_asked is coloured like a block,
because it usually is one. A read failure is logged and the rule trace above it
still renders: a daemon too old to know the method is the ordinary case during
a rolling deploy.

cmd/mavweb/trace.html

@@ -1,9 +1,9 @@
 {{template "shellTop" "trace"}}
 <h1>Rule Trace</h1>
-<div class="hint mb-4">{{.Now | ago}} — winner: <strong>{{if .Winner}}{{.Winner}}{{else}}nothing fired{{end}}</strong></div>
+<div class="hint mb-4">{{.Tick.Now | ago}} — winner: <strong>{{if .Tick.Winner}}{{.Tick.Winner}}{{else}}nothing fired{{end}}</strong></div>
 <div class=scroll><table class=mono>
 <tr><th>rule<th>sev<th>predicate<th>gate<th>blocked by<th>detail<th>selected<th>lost to</tr>
-{{range .Rules}}<tr>
+{{range .Tick.Rules}}<tr>
 <td>{{.RuleName}}</td>
 <td>{{.Severity}}</td>
 <td class={{if .PredicateResult}}green{{else}}gray{{end}}>{{.PredicateResult}}</td>
@@ -21,5 +21,25 @@
 <td>{{.LostTo}}</td>
 </tr>{{end}}
 </table></div>
+
+<h1 class=mt-4>Turn Decisions</h1>
+<div class="hint mb-4">Who claimed each utterance, who lost it, and who was never asked. In memory, newest first, cleared on restart.</div>
+{{if not .Turns}}<div class=hint>no turn has run since the daemon started</div>{{end}}
+{{range .Turns}}
+<details class=mb-4>
+<summary><span class=mono>{{.Utterance}}</span> — <strong>{{if .Winner}}{{.Winner}}{{else}}nobody{{end}}</strong> <span class=hint>{{.Ts | ago}}</span></summary>
+<div class=scroll><table class=mono>
+<tr><th>stage<th>claimant<th>would have been<th>score<th>outcome<th>why</tr>
+{{range .Claims}}<tr>
+<td>{{.Stage}}</td>
+<td>{{.Claimant}}</td>
+<td>{{if .Intent}}{{.Intent}}{{else}}—{{end}}</td>
+<td>{{if .HasScore}}{{printf "%.3f" .Score}}{{else}}—{{end}}</td>
+<td class={{if eq .Outcome "won"}}green{{else if eq .Outcome "never_asked"}}red{{else}}gray{{end}}>{{.Outcome}}</td>
+<td>{{.Reason}}</td>
+</tr>{{end}}
+</table></div>
+</details>
+{{end}}
 {{template "shellBottom"}}
 </html>