Add in-app diagnostic logging + resilient inbox; bump to 1.2

- LogStore: bounded in-memory + persisted log of API calls and errors,
  viewable and shareable from Settings → View logs.
- GiteaClient: log every request/response status (esp. 404s).
- Inbox: a single failing repo no longer wipes the whole inbox — per-repo
  errors are caught, logged, and the rest still load.
- Bump to 1.2 so SideStore offers the update.

GiteaPR/Settings/LogsView.swift

@@ -0,0 +1,77 @@
+import SwiftUI
+import UIKit
+
+/// Diagnostic log viewer. Shows the in-memory/persisted log entries with a
+/// Share button (so the user can send logs to Hermes) and a Clear button.
+struct LogsView: View {
+    @ObservedObject private var store = LogStore.shared
+    @State private var showShare = false
+
+    var body: some View {
+        Group {
+            if store.entries.isEmpty {
+                ContentUnavailableView(
+                    "No logs yet",
+                    systemImage: "doc.text",
+                    description: Text("Run the app and reproduce the issue, then come back here."))
+            } else {
+                List {
+                    ForEach(store.entries.reversed()) { entry in
+                        VStack(alignment: .leading, spacing: 2) {
+                            HStack {
+                                Text(entry.level.rawValue)
+                                    .font(.caption2.weight(.bold))
+                                    .foregroundColor(color(for: entry.level))
+                                Text(entry.timestamp, style: .time)
+                                    .font(.caption2)
+                                    .foregroundColor(.secondary)
+                            }
+                            Text(entry.message)
+                                .font(.caption.monospaced())
+                                .textSelection(.enabled)
+                        }
+                        .padding(.vertical, 2)
+                    }
+                }
+            }
+        }
+        .navigationTitle("Logs")
+        .navigationBarTitleDisplayMode(.inline)
+        .toolbar {
+            ToolbarItem(placement: .primaryAction) {
+                Button {
+                    showShare = true
+                } label: {
+                    Image(systemName: "square.and.arrow.up")
+                }
+                .disabled(store.entries.isEmpty)
+            }
+            ToolbarItem(placement: .cancellationAction) {
+                Button("Clear") { store.clear() }
+                    .disabled(store.entries.isEmpty)
+            }
+        }
+        .sheet(isPresented: $showShare) {
+            ShareSheet(text: store.text)
+        }
+    }
+
+    private func color(for level: LogStore.Entry.Level) -> Color {
+        switch level {
+        case .info: return .secondary
+        case .warn: return .orange
+        case .error: return .red
+        }
+    }
+}
+
+/// Minimal share sheet wrapper (ShareLink is iOS 16+; this is explicit).
+struct ShareSheet: UIViewControllerRepresentable {
+    let text: String
+
+    func makeUIViewController(context: Context) -> UIActivityViewController {
+        UIActivityViewController(activityItems: [text], applicationActivities: nil)
+    }
+    func updateUIViewController(_ uiViewController: UIActivityViewController,
+                                context: Context) {}
+}