feat(core,app,android,ios,cli): look up new titles after every crawl, show presses and work on iOS

Metadata was only fetched after adding a share (mobile) or from the
Settings buttons (desktop), so a show or episode that turned up in an
existing share stayed bare. Every crawl is now followed by a match run
when enrichment is on; `plan` makes no requests for a library that is
already matched. A stored episode guide is fetched again when a file
newer than it has no named entry, and daily for two weeks while an
aired episode is still unnamed.

Removing a share now carries its watch state to any other share holding
the same file, `pstr remove` drops the share's catalog rows, and the app
forgets catalog rows of shares no longer configured — an older `pstr
remove` left them, and every episode showed twice.

iOS, for a slow iPad:
- swipe back on a settings page uses its own edge strip; on the whole
  page it also pressed the row under the finger and opened the metadata
  sheet
- "Change match" from the tile menu opens once the menu has dismissed,
  not after a guessed 350 ms that a slow device missed
- the activity banner tracks each running line by itself (also Android),
  so overlapping work no longer leaves it spinning forever
- buttons, tiles and rows draw their press; marking watched shows at
  once; remove/repair share, sign out and deletions show the banner;
  the player says "Opening…" while the stream opens
- posters are read into a reserved buffer instead of a byte at a time

ios/ProtonStream/Player/PlayerView.swift

@@ -73,10 +73,12 @@ struct PlayerView: View {
 
                 // Only while nothing else explains the still picture: an error
                 // is the more useful thing to say.
-                if player.stalled && host.playbackError == nil {
+                if (host.opening || player.stalled) && host.playbackError == nil {
                     VStack(spacing: 12) {
                         ProgressView().controlSize(.large).tint(scheme.primary)
-                        if player.buffering {
+                        if host.opening {
+                            Text("Opening…").textStyle(.labelMedium).foregroundStyle(scheme.onSurface)
+                        } else if player.buffering {
                             Text(player.cachePercent > 0 ? "Buffering… \(Int(player.cachePercent.rounded()))%" : "Buffering…")
                                 .textStyle(.labelMedium).foregroundStyle(scheme.onSurface)
                         }
@@ -295,7 +297,7 @@ private struct CompactIcon: View {
                 .frame(width: 40, height: 40)
                 .contentShape(Rectangle())
         }
-        .buttonStyle(.plain)
+        .buttonStyle(PressableStyle(circle: true, wash: .white))
         .disabled(!enabled)
         .accessibilityLabel(label)
     }
@@ -342,7 +344,7 @@ private struct UpNextCard: View {
                                 }
                                 .clipShape(RoundedRectangle(cornerRadius: Corner.standard))
                         }
-                        .buttonStyle(.plain)
+                        .buttonStyle(PressableStyle(wash: .white))
                         .accessibilityLabel("Play now")
                         VStack(alignment: .leading, spacing: 2) {
                             Text("Up next in \(remaining)s").textStyle(.labelMedium).foregroundStyle(scheme.onSurfaceVariant)
@@ -515,7 +517,7 @@ private struct EpisodeSheet: View {
             .background(current ? scheme.secondaryContainer : .clear)
             .contentShape(Rectangle())
         }
-        .buttonStyle(.plain)
+        .buttonStyle(.pressable)
     }
 }