feat(web): say what reconciliation did, and never claim a second opinion that was not there

Reconciled: the two engines, the deciding model and the exact counts; the contested
spots (changed or uncertain) listed with a minute mark and both readings, the first
50 shown and the rest counted from the exact totals. Single-engine and
model-unavailable results say why. A nil reconciliation renders nothing. Readings are
escaped. Mutation-checked: the cap, the minute rounding and the 'more' count.

uploads.go and the templ pair are one commit: the helpers and the template need each other.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/web/uploads.templ

@@ -2,6 +2,7 @@ package web
 
 import (
 	"fmt"
+	"strconv"
 	"time"
 
 	"git.d-ma.be/mathias/tapir/internal/domain"
@@ -65,6 +66,7 @@ templ uploadStatus(u domain.UploadedTranscript, chatEnabled bool) {
 					Transcribed { uploads.FormatDuration(time.Duration(u.AudioSeconds * float64(time.Second))) }
 					of audio by <span class="chip">{ u.Endpoint }</span>.
 				</p>
+				@reconciliationNote(u.Reconciliation)
 				if chatEnabled {
 					<p><a class="btn" href={ templ.SafeURL("/uploads/" + u.ID + "/chat") }>Ask about this recording</a></p>
 				}
@@ -123,3 +125,48 @@ templ videoNotice(hadVideo bool) {
 		</p>
 	}
 }
+
+// reconciliationNote says what was done when two engines transcribed the audio
+// (ADR-034), and never claims a second opinion that was not there: nil means a single
+// engine and renders nothing. Spots the model changed or was unsure about are listed
+// with a minute mark and both readings so the user can check them against the audio.
+templ reconciliationNote(r *domain.Reconciliation) {
+	if r != nil {
+		switch r.Status {
+			case domain.ReconcileDone:
+				<div class="reconciliation">
+					<p>
+						Reconciled from two transcripts ({ r.Base } and { r.Alt }):
+						{ strconv.Itoa(r.Disputes) } differences,
+						{ strconv.Itoa(r.AutoResolved) } settled automatically,
+						{ strconv.Itoa(r.Adjudicated) } decided by the model ({ r.Reconciler }),
+						{ strconv.Itoa(r.Unsure) } uncertain.
+					</p>
+					if len(r.Contested) > 0 {
+						<details>
+							<summary>Spots to check against the audio</summary>
+							<ul>
+								for _, c := range shownSpots(r) {
+									<li>
+										{ minuteMark(c.Seconds) }: { c.Base } / { c.Alt } —
+										if c.Unsure {
+											<span class="chip chip-warn">uncertain</span> kept { c.Used }
+										} else {
+											<span class="chip">changed</span> used { c.Used }
+										}
+									</li>
+								}
+							</ul>
+							if moreSpots(r) > 0 {
+								<p class="muted">and { strconv.Itoa(moreSpots(r)) } more not listed</p>
+							}
+						</details>
+					}
+				</div>
+			case domain.ReconcileSingle:
+				<p class="muted reconciliation">Only one engine produced this transcript ({ r.Reason }), so there was no second opinion to reconcile it with.</p>
+			case domain.ReconcileSkipped:
+				<p class="muted reconciliation">Two transcripts were made but could not be reconciled ({ r.Reason }); the text shown is { r.Base }'s, unreconciled.</p>
+		}
+	}
+}