Fixes a defect shipped in v0.154.0, found by the operator on the first live
click-through of the new wizard.
backup.Manager carries TWO running booleans. `running` (read by IsRunning) is the
concurrency single-flight, acquired inside the background goroutine — and
RestoreOffboxScratch never acquires it at all. `opRunning` (read by RestoreStatus) is the
display flag, set synchronously by BeginRestoreOp in the handler.
The wizard sourced OpRunning from IsRunning(), so for „Ellenőrzés" and the full-restore
preparation — its two most-used and longest actions, both streaming from restic — the
execution step was unreachable: the page offered all three intents with live buttons
while a restore was running, and the progress banner contradicted the phase strip on the
same screen. Pressing anything there would have been refused by the handler, which is the
exact "offering a control guaranteed to fail" dishonesty R-48 exists to remove.
Fix: restoreOpInFlight(st) behind a documented seam, fed by a SINGLE RestoreStatus() read
per render so the strip, the suppression decision and the running-op name cannot diverge.
Why the tests missed it: the Scenario-E table proved deriveWizardStep behaves correctly
GIVEN OpRunning=true, but nothing proved the handler ever computes true — hollow at
exactly that seam. TestRestoreOpInFlight_UsesDisplayFlagNotConcurrencyFlag now drives a
real Manager through BeginRestoreOp and asserts the render suppresses every form.
Red-proofed against the v0.154.0 shape.
Also: „Eredmény" was a dead label. The strip's highlight is now its own derived Phase,
separate from Step — a finished restore returns to the intent step (everything available
again) while the strip reads „Eredmény" and an outcome card shows the result. Bounded by
restoreResultWindow (10 min) so a stale result cannot look fresh, and bound to the app so
a finished bookstack restore does not light immich's page with bookstack's message. The
card survives a reload; the redirect flash does not.
No new agent coupling — MinAgent stays 0.90.0.
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