Series URL repair: owner-typed, gated by the poller's own fetch gate (#151)

backend/internal/web/admin_series_detail.go

@@ -24,11 +24,14 @@ type seriesDetailView struct {
 	Cover   string
 	Chapter string // Latest Chapter number, or "—" before the first capture
 	Checked string // how long ago the poller last checked, or "never"
+	// URL is the stored source address, prefilled into the repair input —
+	// the one stored string this page renders back into a form (issue #151).
+	URL     string
+	Readers int
 	// Corrected is the correction marker's text, "" while no Correction
 	// stands: "corrected <age> ago" — the copy that says the value is the
 	// owner's, and it dies with the stamp (a machine write of the number).
 	Corrected string
-	Readers   int
 
 	// Marks, one per hygiene fact, rendered only while it holds.
 	Unpollable     bool // no SeriesURL to fetch
@@ -106,6 +109,7 @@ func (h *Handler) seriesDetailView(a store.AdminSeries) seriesDetailView {
 		Kind:           a.Kind,
 		Title:          a.Title,
 		Cover:          h.store.CoverWireURL(a.CoverAddress),
+		URL:            a.SeriesURL,
 		Readers:        a.ReaderCount,
 		Unpollable:     a.SeriesURL == "",
 		NoCover:        a.CoverAddress == "",