v0.297.0: burn-down round 2 — 24 small rows (R-591 R-568 R-567 R-363 R-547 R-10 R-552 R-251 R-104 R-619 R-362 R-675 R-256 R-257 R-240 R-365 R-425 R-565 R-564 R-603 R-454 R-208 R-457-swept) + the banner countdown and deepCopyStack twins; MinAgent 0.131.0

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/web/disk_health.go

@@ -2,6 +2,7 @@ package web
 
 import (
 	"context"
+	"sort"
 	"strconv"
 	"sync"
 	"time"
@@ -137,8 +138,16 @@ func (s *Server) diskHealthRows(ctx context.Context) []DiskHealthRow {
 	}
 	s.diskHealth.mu.Unlock()
 
+	// R-568: the agent's response order is not stable between calls, so the card used to swap its
+	// rows between visits. Order by the durable identity (diskKey) — the same key the persisted
+	// state uses — so "the second disk" is the same disk on every visit. Stable, so two entries for
+	// one physical disk keep their relative order. Pinned by TestDiskHealthRows_OrderIsStable.
+	disks := make([]agentapi.DiskInfo, len(resp.Disks))
+	copy(disks, resp.Disks)
+	sort.SliceStable(disks, func(i, j int) bool { return diskKey(disks[i]) < diskKey(disks[j]) })
+
 	var rows []DiskHealthRow
-	for _, d := range resp.Disks {
+	for _, d := range disks {
 		if !isPhysicalDisk(d) {
 			continue
 		}