Document public Gitea update mirror

README.md

@@ -9,6 +9,8 @@ APIs directly:
 - server URL management for Tailscale `100.x.y.z:3000` APIs
 - quick server selectors for `100.89.0.2`, `100.89.0.4`, `100.89.0.9`,
   `100.89.0.11`, and `100.89.0.116`
+- one-tap probe for the preset Tailscale APIs, showing health/version and
+  session counts
 - native tmux session list
 - create, rename, send command, split pane, select pane, kill pane, pin, mute,
   and kill session through HTTP API
@@ -80,10 +82,10 @@ https://github.com/neatstudio/tmux-browser-android/releases/latest/download/tmux
 https://github.com/neatstudio/tmux-browser-android/releases/latest/download/latest.json
 ```
 
-Those GitHub links are the stable public install/update channel. Gitea releases
-are mirrored for internal tracking, but the current Gitea org/repo visibility
-keeps anonymous release downloads behind login, so phones should use GitHub for
-no-login install and in-app updates.
+Those GitHub links are the primary public install/update channel. Gitea releases
+are mirrored as a second public source. This Gitea instance does not support the
+GitHub-style `/releases/latest/download/...` URL, so the app uses the Gitea
+Release API as the stable Gitea update entrypoint.
 
 Plain branch builds only create Actions artifacts; they are useful for CI
 verification, but releases are the stable download/update channel.
@@ -141,13 +143,19 @@ https://github.com/neatstudio/tmux-browser-android/releases/latest/download/tmux
 ```
 
 The app tries the selected update source first, then falls back to the GitHub
-manifest and the Gitea release API. GitHub is the reliable no-login source today.
-The Gitea API endpoint is:
+manifest and the Gitea release API. The Gitea API endpoint is:
 
 ```text
 https://gitea.neatcn.com/api/v1/repos/tmux/tmux-browser-android/releases/latest
 ```
 
+Gitea tag-specific assets are also public, for example:
+
+```text
+https://gitea.neatcn.com/tmux/tmux-browser-android/releases/download/v0.1.7/latest.json
+https://gitea.neatcn.com/tmux/tmux-browser-android/releases/download/v0.1.7/tmux-android.apk
+```
+
 In the app:
 
 - Tap `Update` on the main screen to check `latest.json`, download the APK,

app/src/main/java/com/neatstudio/tmuxandroid/MainActivity.java

@@ -447,6 +447,7 @@ public final class MainActivity extends Activity {
     private void showMainActions() {
         String[] items = {
                 "Health",
+                "Probe Tailscale APIs",
                 "Server status",
                 "Timeline",
                 "Preferences",
@@ -476,63 +477,66 @@ public final class MainActivity extends Activity {
                             showRaw("Health", () -> api.health());
                             break;
                         case 1:
-                            showRaw("Server status", () -> api.serverStatus());
+                            probeServerProfiles();
                             break;
                         case 2:
-                            showRaw("Timeline", () -> api.timeline(50));
+                            showRaw("Server status", () -> api.serverStatus());
                             break;
                         case 3:
-                            showRaw("Preferences", () -> api.preferences());
+                            showRaw("Timeline", () -> api.timeline(50));
                             break;
                         case 4:
-                            showRaw("All session details", () -> api.sessionsAll());
+                            showRaw("Preferences", () -> api.preferences());
                             break;
                         case 5:
-                            showRaw("Pane details", () -> api.sessionsPanes());
+                            showRaw("All session details", () -> api.sessionsAll());
                             break;
                         case 6:
-                            showRaw("Kanban projects", () -> api.kanbanProjects());
+                            showRaw("Pane details", () -> api.sessionsPanes());
                             break;
                         case 7:
-                            promptCreateKanbanProject();
+                            showRaw("Kanban projects", () -> api.kanbanProjects());
                             break;
                         case 8:
-                            promptDeleteKanbanProject();
+                            promptCreateKanbanProject();
                             break;
                         case 9:
-                            promptRemoveKanbanSession();
+                            promptDeleteKanbanProject();
                             break;
                         case 10:
-                            promptGroupMessages();
+                            promptRemoveKanbanSession();
                             break;
                         case 11:
-                            promptSendGroupMessage();
+                            promptGroupMessages();
                             break;
                         case 12:
-                            promptScanGroupMessage();
+                            promptSendGroupMessage();
                             break;
                         case 13:
-                            promptPostHookEvent();
+                            promptScanGroupMessage();
                             break;
                         case 14:
-                            promptUploadImageFile();
+                            promptPostHookEvent();
                             break;
                         case 15:
-                            promptUploadImageUrl();
+                            promptUploadImageFile();
                             break;
                         case 16:
-                            promptImagePreviewInfo();
+                            promptUploadImageUrl();
                             break;
                         case 17:
-                            promptOpenImagePreview();
+                            promptImagePreviewInfo();
                             break;
                         case 18:
-                            openExternalUrl(BuildConfig.DEFAULT_APK_URL);
+                            promptOpenImagePreview();
                             break;
                         case 19:
-                            showUpdateSourcePicker();
+                            openExternalUrl(BuildConfig.DEFAULT_APK_URL);
                             break;
                         case 20:
+                            showUpdateSourcePicker();
+                            break;
+                        case 21:
                             showPermissionsAndUpdateStatus();
                             break;
                         default:
@@ -958,8 +962,8 @@ public final class MainActivity extends Activity {
         text.append("Selected manifest:\n")
                 .append(prefs.getString("update_url", BuildConfig.DEFAULT_UPDATE_URL))
                 .append('\n');
-        text.append("GitHub manifest:\n").append(BuildConfig.DEFAULT_UPDATE_URL).append('\n');
-        text.append("Gitea release API:\n").append(BuildConfig.DEFAULT_GITEA_UPDATE_URL).append('\n');
+        text.append("GitHub primary manifest:\n").append(BuildConfig.DEFAULT_UPDATE_URL).append('\n');
+        text.append("Gitea public mirror API:\n").append(BuildConfig.DEFAULT_GITEA_UPDATE_URL).append('\n');
         text.append('\n');
         text.append("Network: manifest permission, no runtime grant required\n");
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
@@ -1020,6 +1024,36 @@ public final class MainActivity extends Activity {
         showMessage("Update source: " + url);
     }
 
+    private void probeServerProfiles() {
+        progressBar.setVisibility(View.VISIBLE);
+        setStatus("Probing Tailscale APIs...");
+        executor.execute(() -> {
+            StringBuilder text = new StringBuilder();
+            for (String url : SERVER_PROFILES) {
+                text.append(url).append('\n');
+                try {
+                    SessionApiClient client = new SessionApiClient(url);
+                    JSONObject health = new JSONObject(client.health());
+                    List<SessionSummary> sessions = client.getSessions();
+                    text.append("  ok: true\n");
+                    text.append("  version: ")
+                            .append(health.optString("version", "unknown"))
+                            .append(" ")
+                            .append(health.optString("commit", ""))
+                            .append('\n');
+                    text.append("  sessions: ").append(sessions.size()).append('\n');
+                } catch (Exception error) {
+                    text.append("  failed: ").append(error.getMessage()).append('\n');
+                }
+                text.append('\n');
+            }
+            runOnUiThread(() -> {
+                progressBar.setVisibility(View.GONE);
+                showTextDialog("Tailscale APIs", text.toString());
+            });
+        });
+    }
+
     private void openInstallPermissionSettings() {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
             showMessage("Install permission is allowed on this Android version");