v0.275.0: a backup's data and its version travel together (R-696, 07 §6.6, D4 option A); R-695, R-691, R-694

The unit's data files are stamped with the versions that wrote them; the capture keeps the
definition the data belongs to; a restore never starts data under another version's
definition (unit restores refuse a mismatch; the off-site restore writes the snapshot's
definition); every tier's time is its data's; the conversion-copy release needs a dump on
the new engine. File-browser sync single-flight + no empty kept folder (R-695); the kept
view joins the folder's owning group, language switch resyncs (R-691); a restore-generated
login is not shown as the password (R-694). Red-proofs in
felhom.eu/documentation/audits/version-travel-2026-09-26/.

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

controller/internal/backup/runsummary_test.go

@@ -24,7 +24,7 @@ func (h *admissionHarness) digestOf(kind string) *RunSummary {
 	doneAdm := h.m.beginAdmissionRun()
 	doneSum := h.m.beginRunSummary(kind, "run-test")
 	h.m.runVolumeDumps()
-	h.m.captureAllRecoveryUnits()
+	h.m.captureAllRecoveryUnits(false)
 	h.m.emitRunSummary()
 	doneSum()
 	doneAdm()
@@ -153,7 +153,7 @@ func TestRunSummary_RefreshSweepHasNoRunID(t *testing.T) {
 		defer h.m.beginAdmissionRun()()
 		defer h.m.beginRunSummary(runKindRefresh, "")()
 		defer h.m.emitRunSummary()
-		h.m.captureAllRecoveryUnits()
+		h.m.captureAllRecoveryUnits(false)
 	}()
 	if got == nil {
 		t.Fatal("the periodic sweep emitted no digest — with the per-app event now record-only, a " +