Unify page routing and harden acquire wiring after review (#62)

backend/main.go

@@ -328,16 +328,22 @@ func main() {
 	// Cover from one fetch, at creation, instead of waiting out a poll queue
 	// ordered by Reader count. Off the write path: the hook returns as soon
 	// as the goroutine is started.
+	var tlsFetch latest.Fetcher
 	if f, err := latest.NewTLSFetcher(); err != nil {
-		log.Printf("creation-time acquisition disabled, cannot build client: %v", err)
+		log.Printf("creation-time acquisition: plain-TLS Sites disabled, cannot build client: %v", err)
 	} else {
-		var browserCover latest.BrowserCoverFetcher
-		if b, ok := browser.(latest.BrowserCoverFetcher); ok {
-			browserCover = b
-		}
+		tlsFetch = f
+	}
+	var browserCover latest.BrowserCoverFetcher
+	if b, ok := browser.(latest.BrowserCoverFetcher); ok {
+		browserCover = b
+	}
+	// The Acquirer must survive a TLS client failure: kagane needs only the
+	// sidecar, and novelfull degrades to whatever is left.
+	if tlsFetch != nil || browser != nil {
 		acq := &latest.Acquirer{
 			Store:             s,
-			Fetch:             f,
+			Fetch:             tlsFetch,
 			BrowserFetch:      browser,
 			BrowserCoverFetch: browserCover,
 			Covers:            latest.NewCoverFetcher(),