Fix server flow and keyboard insets

.gitea/workflows/android.yaml

@@ -1,4 +1,4 @@
-name: Gitea Android Compile Check
+name: Gitea Android APK
 
 on: [push]
 
@@ -6,9 +6,13 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Compile Android APK
+      - name: Build Android APK
         env:
           CLONE_TOKEN: ${{ secrets.TMUX_GITEA_TOKEN }}
+          ANDROID_KEYSTORE_BASE64: ${{ secrets.ANDROID_KEYSTORE_BASE64 }}
+          ANDROID_KEYSTORE_PASSWORD: ${{ secrets.ANDROID_KEYSTORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+          ANDROID_KEY_PASSWORD: ${{ secrets.ANDROID_KEY_PASSWORD }}
         run: |
           set -eu
 
@@ -26,8 +30,12 @@ jobs:
           rm -rf "${WORKDIR}"
           SERVER_URL="${GITHUB_SERVER_URL:-https://gitea.neatcn.com}"
           REPOSITORY="${GITHUB_REPOSITORY:-tmux/tmux-browser-android}"
-          AUTH_SERVER_URL="$(printf '%s' "${SERVER_URL}" | sed "s#https://#https://gouki:${CLONE_TOKEN}@#")"
-          git clone "${AUTH_SERVER_URL}/${REPOSITORY}.git" "${WORKDIR}"
+          if [ -n "${CLONE_TOKEN:-}" ]; then
+            AUTH_SERVER_URL="$(printf '%s' "${SERVER_URL}" | sed "s#https://#https://gouki:${CLONE_TOKEN}@#")"
+            git clone "${AUTH_SERVER_URL}/${REPOSITORY}.git" "${WORKDIR}"
+          else
+            git clone "${SERVER_URL}/${REPOSITORY}.git" "${WORKDIR}"
+          fi
           cd "${WORKDIR}"
           git checkout "${GITHUB_SHA:-main}"
 
@@ -53,17 +61,105 @@ jobs:
           yes | sdkmanager --licenses >/dev/null || true
           sdkmanager "platforms;android-35" "build-tools;35.0.0" "platform-tools"
 
-          VERSION_NAME="0.1.${GITHUB_RUN_NUMBER:-0}"
-          VERSION_CODE=$((2000 + ${GITHUB_RUN_NUMBER:-0}))
-          gradle :app:assembleDebug \
+          REF="${GITHUB_REF:-}"
+          REF_NAME="${GITHUB_REF_NAME:-}"
+          if [ -z "${REF_NAME}" ]; then
+            REF_NAME="${REF##*/}"
+          fi
+          PUBLISH_RELEASE=0
+          if [ "${REF#refs/tags/v}" != "${REF}" ]; then
+            PUBLISH_RELEASE=1
+            VERSION_NAME="${REF_NAME#v}"
+            MAJOR="$(printf '%s' "${VERSION_NAME}" | cut -d. -f1)"
+            MINOR="$(printf '%s' "${VERSION_NAME}" | cut -d. -f2)"
+            PATCH="$(printf '%s' "${VERSION_NAME}" | cut -d. -f3)"
+            VERSION_CODE=$((MAJOR * 1000000 + MINOR * 1000 + PATCH))
+          else
+            VERSION_NAME="0.1.${GITHUB_RUN_NUMBER:-0}"
+            VERSION_CODE=$((3000 + ${GITHUB_RUN_NUMBER:-0}))
+          fi
+
+          SIGNED=false
+          if [ -n "${ANDROID_KEYSTORE_BASE64:-}" ]; then
+            echo "${ANDROID_KEYSTORE_BASE64}" | base64 -d > release.jks
+            {
+              echo "storeFile=release.jks"
+              echo "storePassword=${ANDROID_KEYSTORE_PASSWORD}"
+              echo "keyAlias=${ANDROID_KEY_ALIAS}"
+              echo "keyPassword=${ANDROID_KEY_PASSWORD}"
+            } > signing.properties
+            SIGNED=true
+          fi
+
+          if [ "${PUBLISH_RELEASE}" = "1" ] && [ "${SIGNED}" != "true" ]; then
+            echo "Gitea release publishing requires ANDROID_KEYSTORE_BASE64 and signing secrets." >&2
+            exit 1
+          fi
+          if [ "${PUBLISH_RELEASE}" = "1" ] && [ -z "${CLONE_TOKEN:-}" ]; then
+            echo "Gitea release publishing requires TMUX_GITEA_TOKEN." >&2
+            exit 1
+          fi
+
+          if [ "${SIGNED}" = "true" ]; then
+            BUILD_TASK=":app:assembleRelease"
+          else
+            BUILD_TASK=":app:assembleDebug"
+          fi
+          gradle "${BUILD_TASK}" \
             -PversionCode="${VERSION_CODE}" \
             -PversionName="${VERSION_NAME}" \
             -PrepoSlug="neatstudio/tmux-browser-android"
 
           mkdir -p release
           APK_PATH="$(find app/build/outputs/apk -name '*.apk' | sort | tail -n 1)"
-          cp "${APK_PATH}" release/tmux-android-gitea-compile-check.apk
-          ls -lh release/tmux-android-gitea-compile-check.apk
-          sha256sum release/tmux-android-gitea-compile-check.apk
-          echo "Gitea-built APK is a compile check only."
-          echo "Do not publish it as a release asset; release APKs are GitHub-built and mirrored byte-for-byte to Gitea."
+          cp "${APK_PATH}" release/tmux-android.apk
+          cp "${APK_PATH}" "release/tmux-android-${VERSION_NAME}.apk"
+          SHA256="$(sha256sum release/tmux-android.apk | awk '{print $1}')"
+          TAG="v${VERSION_NAME}"
+          APK_URL="https://gitea.neatcn.com/tmux/tmux-browser-android/releases/download/${TAG}/tmux-android.apk"
+          RELEASE_PAGE_URL="https://gitea.neatcn.com/tmux/tmux-browser-android/releases/tag/${TAG}"
+          cat > release/latest.json << JSON
+          {
+            "versionCode": ${VERSION_CODE},
+            "versionName": "${VERSION_NAME}",
+            "apkUrl": "${APK_URL}",
+            "sha256": "${SHA256}",
+            "releasePageUrl": "${RELEASE_PAGE_URL}",
+            "minSdk": 26
+          }
+          JSON
+          ls -lh release/tmux-android.apk release/latest.json
+          sha256sum release/tmux-android.apk
+
+          if [ "${PUBLISH_RELEASE}" != "1" ]; then
+            echo "Gitea main build completed as compile check."
+            exit 0
+          fi
+
+          API_ROOT="https://gitea.neatcn.com/api/v1/repos/tmux/tmux-browser-android"
+          RELEASE_BODY='{"tag_name":"'"${TAG}"'","target_commitish":"main","name":"tmux Android '"${VERSION_NAME}"'","body":"Android APK for tmux-ui remote testing.","draft":false,"prerelease":false}'
+          if ! curl -fsSL -X POST \
+            -H "Authorization: token ${CLONE_TOKEN}" \
+            -H "Content-Type: application/json" \
+            -d "${RELEASE_BODY}" \
+            "${API_ROOT}/releases" \
+            -o /tmp/gitea-release.json; then
+            curl -fsSL -H "Authorization: token ${CLONE_TOKEN}" \
+              "${API_ROOT}/releases/tags/${TAG}" \
+              -o /tmp/gitea-release.json
+          fi
+          RELEASE_ID="$(sed -n 's/.*"id":\([0-9][0-9]*\).*/\1/p' /tmp/gitea-release.json | head -1)"
+          if [ -z "${RELEASE_ID}" ]; then
+            echo "Cannot resolve Gitea release id." >&2
+            cat /tmp/gitea-release.json >&2
+            exit 1
+          fi
+          curl -fsSL -X POST -H "Authorization: token ${CLONE_TOKEN}" \
+            -F "attachment=@release/tmux-android.apk;type=application/vnd.android.package-archive" \
+            "${API_ROOT}/releases/${RELEASE_ID}/assets?name=tmux-android.apk" \
+            -o /tmp/gitea-apk-asset.json
+          curl -fsSL -X POST -H "Authorization: token ${CLONE_TOKEN}" \
+            -F "attachment=@release/latest.json;type=application/json" \
+            "${API_ROOT}/releases/${RELEASE_ID}/assets?name=latest.json" \
+            -o /tmp/gitea-latest-asset.json
+          echo "Published Gitea release ${TAG}."

.github/workflows/android.yml

@@ -2,8 +2,6 @@ name: Android APK
 
 on:
   push:
-    branches:
-      - main
     tags:
       - "v*"
   pull_request:
@@ -27,10 +25,12 @@ jobs:
         run: |
           if [[ "${GITHUB_REF}" == refs/tags/v* ]]; then
             VERSION_NAME="${GITHUB_REF_NAME#v}"
+            IFS='.' read -r MAJOR MINOR PATCH <<< "${VERSION_NAME}"
+            VERSION_CODE=$((MAJOR * 1000000 + MINOR * 1000 + PATCH))
           else
             VERSION_NAME="0.1.${GITHUB_RUN_NUMBER}"
+            VERSION_CODE=$((1000 + GITHUB_RUN_NUMBER))
           fi
-          VERSION_CODE=$((1000 + GITHUB_RUN_NUMBER))
           echo "VERSION_NAME=${VERSION_NAME}" >> "${GITHUB_ENV}"
           echo "VERSION_CODE=${VERSION_CODE}" >> "${GITHUB_ENV}"
 

README.md

@@ -88,31 +88,32 @@ base64 -w 0 tmux-android-release.jks
 Branch builds and manual workflow runs create Actions artifacts only. Use them
 to verify grouped changes before publishing.
 
-Publish a release build by pushing a `v*` tag. A tag should be reserved for a
-coherent feature/test batch, not every small UI or text change. Tag publishing
-creates a GitHub Release with:
+Gitea is the primary build and update channel. Normal `main` pushes run the
+Gitea Android workflow for compile checks, while GitHub no longer builds every
+main push. Publish a release build by pushing a `v*` tag after a coherent
+feature/test batch, not every small UI or text change.
+
+Tag publishing can create GitHub Release assets with:
 
 ```text
 https://github.com/neatstudio/tmux-browser-android/releases/latest/download/tmux-android.apk
 https://github.com/neatstudio/tmux-browser-android/releases/latest/download/latest.json
 ```
 
-Gitea is the app's default install/update channel because phones may not be able
-to reach GitHub reliably. GitHub remains an optional 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.
+Gitea is also the app's default install/update channel because phones may not be
+able to reach GitHub reliably. GitHub remains an optional 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.
 
-Release APKs must be identical on GitHub and Gitea. The canonical APK is the
-GitHub Release asset built by `.github/workflows/android.yml`; publish to Gitea
-by mirroring that same `tmux-android.apk` byte-for-byte and uploading a
-Gitea-specific `latest.json` whose `apkUrl` points at the Gitea asset but whose
-`versionCode`, `versionName`, and `sha256` match the GitHub manifest. Do not use
-a separately built Gitea APK as a release asset unless it is proven to have the
-same SHA-256 as the GitHub APK. This keeps Android signatures and update
-compatibility identical no matter which platform the phone can reach.
+Release APKs on GitHub and Gitea should either be the exact same file or be
+built from the same tag with the same signing keystore, `versionCode`, and
+`versionName`. The Gitea workflow publishes release assets only when signing
+secrets are present. Unsigned Gitea builds remain compile checks and must not be
+used for automatic in-place updates.
 
-Plain branch builds only create Actions artifacts; they are useful for CI
-verification, but releases are the stable download/update channel.
+Plain branch builds are useful for CI verification, but releases are the stable
+download/update channel.
 
 Unsigned/debug workflow artifacts are useful only for smoke testing install and
 launch. Automatic in-place updates require release APKs signed with the same
@@ -123,18 +124,16 @@ incompatible package.
 
 The terminal screen connects to `/ws/terminal` and sends the upstream protocol
 messages unchanged: `attach`, `input`, `resize`, `scroll`, and `clear-history`.
-The first Android UI renders terminal output as monospace text with basic ANSI
-SGR color support. The terminal view stays bottom-aligned when output is short,
-auto-scrolls as data arrives, and adjusts its bottom inset when the soft keyboard
-opens. Rendering is throttled and the local terminal buffer is capped so opening
-busy sessions does not block the UI thread. Input typed before the terminal
-attach message is sent is queued and flushed after the WebSocket client is ready.
-It is enough for shell-oriented remote testing, but it is not yet a complete
-xterm-compatible renderer for full-screen TUIs such as `vim` or `top`.
+The Android UI renders terminal output through a lightweight screen buffer with
+cursor movement, line clearing, screen clearing, basic ANSI SGR color support,
+and throttled redraws. It is enough for shell-oriented remote testing, but it is
+not yet a complete xterm-compatible renderer for full-screen TUIs such as `vim`
+or `top`.
 
-The terminal toolbar and shortcut row include tmux prefix helpers. The app sends
-the same control bytes a keyboard would send, for example `Ctrl+B`, `Ctrl+B d`,
-`Ctrl+B c`, `Ctrl+B n`, and `Ctrl+B p`.
+The terminal input area is a native multi-line composer with a paged accessory
+bar for editing keys, control keys, tmux prefix helpers, navigation keys, and
+common shell symbols. The app sends the same control bytes a keyboard would
+send, for example `Ctrl+B`, `Ctrl+B d`, `Ctrl+B c`, `Ctrl+B n`, and `Ctrl+B p`.
 
 All app features are native Android controls. Complex server objects such as
 preferences, timeline events, group messages, and image metadata currently use

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

@@ -67,6 +67,7 @@ public final class MainActivity extends Activity {
     private static final String OLD_LOCAL_DEFAULT_URL = "http://127.0.0.1:3000";
     private static final String OLD_GITHUB_DEFAULT_UPDATE_URL = "https://github.com/neatstudio/tmux-browser-android/releases/latest/download/latest.json";
     private static final String DEFAULT_TAILSCALE_URL = "http://100.89.0.116:3000";
+    private static final String PAGE_SERVERS = "Servers";
     private static final String PAGE_SESSIONS = "Sessions";
     private static final String PAGE_PROJECTS = "Projects";
     private static final String PAGE_TOOLS = "Tools";
@@ -97,7 +98,7 @@ public final class MainActivity extends Activity {
     private EditText inputField;
     private View terminalComposerBar;
     private String activeSessionName;
-    private String activeMainPage = PAGE_SESSIONS;
+    private String activeMainPage = PAGE_SERVERS;
     private String pendingImageUploadSession;
     private TerminalScreenBuffer terminalScreen = new TerminalScreenBuffer(DEFAULT_TERMINAL_COLS, DEFAULT_TERMINAL_ROWS);
     private final StringBuilder queuedTerminalInput = new StringBuilder();
@@ -133,7 +134,7 @@ public final class MainActivity extends Activity {
             getWindow().setStatusBarColor(Color.rgb(17, 20, 24));
             getWindow().setNavigationBarColor(Color.rgb(17, 20, 24));
         }
-        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
+        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING);
         api = new SessionApiClient(getServerUrl());
         setContentView(createRoot());
         updateManager = new UpdateManager(this, prefs, new UpdateManager.Callback() {
@@ -147,8 +148,7 @@ public final class MainActivity extends Activity {
                 showMessage(message);
             }
         });
-        renderSessionScreen();
-        refreshSessions();
+        renderServerScreen();
         connectAppEvents();
         maybeCheckForUpdates();
     }
@@ -177,7 +177,9 @@ public final class MainActivity extends Activity {
         view.setOnApplyWindowInsetsListener((target, insets) -> {
             int bottom = insets.getSystemWindowInsetBottom();
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
-                bottom = insets.getInsets(WindowInsets.Type.systemBars()).bottom;
+                int systemBottom = insets.getInsets(WindowInsets.Type.systemBars()).bottom;
+                int imeBottom = insets.getInsets(WindowInsets.Type.ime()).bottom;
+                bottom = Math.max(systemBottom, imeBottom);
             }
             target.setPadding(
                     0,
@@ -191,16 +193,94 @@ public final class MainActivity extends Activity {
         view.post(view::requestApplyInsets);
     }
 
+    private void renderServerScreen() {
+        closeTerminalSocket();
+        activeSessionName = null;
+        activeMainPage = PAGE_SERVERS;
+        projectList = null;
+        root.removeAllViews();
+        root.addView(createMainTabs(PAGE_SERVERS), new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                dp(48)
+        ));
+        root.addView(progressBar, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                dp(3)
+        ));
+
+        ScrollView scroll = new ScrollView(this);
+        LinearLayout content = pageContent();
+        content.addView(infoBlock(
+                "Server",
+                "Active API: " + getServerUrl() + "\nHTTP and WebSocket use port 3000."
+        ));
+
+        content.addView(sectionTitle("Tailscale servers"));
+        for (String url : SERVER_PROFILES) {
+            content.addView(serverProfileCard(url), matchWrap());
+        }
+
+        content.addView(sectionTitle("Custom server"));
+        content.addView(createServerBar());
+        content.addView(actionPanel(
+                actionButton("Open sessions", view -> openSessionPage()),
+                actionButton("Probe all", view -> probeServerProfiles()),
+                actionButton("Health", view -> showRaw("Health", () -> api.health())),
+                actionButton("Update", view -> renderUpdateScreen())
+        ));
+        scroll.addView(content);
+        root.addView(scroll, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                0,
+                1
+        ));
+        root.addView(statusText, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                dp(28)
+        ));
+        setStatus("Servers");
+    }
+
+    private View serverProfileCard(String url) {
+        String label = url.replace("http://", "").replace(":3000", "");
+        LinearLayout card = new LinearLayout(this);
+        card.setOrientation(LinearLayout.VERTICAL);
+        card.setPadding(dp(12), dp(11), dp(12), dp(11));
+        card.setBackground(rounded(Color.rgb(27, 33, 40), 8, Color.rgb(45, 54, 64), 1));
+
+        TextView title = new TextView(this);
+        title.setText(label);
+        title.setTextColor(Color.WHITE);
+        title.setTextSize(16);
+        title.setTypeface(Typeface.DEFAULT_BOLD);
+        TextView meta = bodyText(url);
+        meta.setPadding(0, dp(4), 0, dp(8));
+
+        LinearLayout actions = new LinearLayout(this);
+        actions.setOrientation(LinearLayout.HORIZONTAL);
+        actions.addView(toolbarButton("Use", view -> {
+            selectServer(url);
+            openSessionPage();
+        }));
+        actions.addView(toolbarButton("Probe", view -> probeSingleServer(url)));
+
+        card.addView(title);
+        card.addView(meta);
+        card.addView(actions);
+        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT
+        );
+        params.bottomMargin = dp(8);
+        card.setLayoutParams(params);
+        return card;
+    }
+
     private void renderSessionScreen() {
         closeTerminalSocket();
         activeSessionName = null;
         activeMainPage = PAGE_SESSIONS;
         root.removeAllViews();
-        root.addView(createServerBar(), matchWrap());
-        root.addView(createServerProfileBar(), new LinearLayout.LayoutParams(
-                ViewGroup.LayoutParams.MATCH_PARENT,
-                dp(46)
-        ));
         root.addView(createMainTabs(PAGE_SESSIONS), new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 dp(48)
@@ -213,11 +293,23 @@ public final class MainActivity extends Activity {
         ScrollView scroll = new ScrollView(this);
         LinearLayout content = pageContent();
         content.addView(sessionSummaryBlock());
+        content.addView(sectionTitle("Session actions"));
+        content.addView(actionPanel(
+                actionButton("New session", view -> promptCreateSession()),
+                actionButton("Refresh", view -> refreshSessions()),
+                actionButton("New project", view -> promptCreateKanbanProject()),
+                actionButton("Projects", view -> renderProjectsScreen())
+        ));
         content.addView(sectionTitle("Tmux sessions"));
         LinearLayout list = new LinearLayout(this);
         list.setOrientation(LinearLayout.VERTICAL);
         list.setTag("session-list");
         content.addView(list);
+        content.addView(sectionTitle("Project groups"));
+        projectList = new LinearLayout(this);
+        projectList.setOrientation(LinearLayout.VERTICAL);
+        projectList.addView(projectStateText("Loading after sessions..."), matchWrap());
+        content.addView(projectList, matchWrap());
         scroll.addView(content);
         root.addView(scroll, new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
@@ -228,6 +320,13 @@ public final class MainActivity extends Activity {
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 dp(28)
         ));
+        setStatus("Sessions");
+    }
+
+    private void openSessionPage() {
+        renderSessionScreen();
+        refreshSessions();
+        refreshProjects();
     }
 
     private View sessionSummaryBlock() {
@@ -243,6 +342,7 @@ public final class MainActivity extends Activity {
         closeTerminalSocket();
         activeSessionName = null;
         activeMainPage = PAGE_TOOLS;
+        projectList = null;
         root.removeAllViews();
         root.addView(createServerBar(), matchWrap());
         root.addView(createMainTabs(PAGE_TOOLS), new LinearLayout.LayoutParams(
@@ -359,6 +459,7 @@ public final class MainActivity extends Activity {
         closeTerminalSocket();
         activeSessionName = null;
         activeMainPage = PAGE_UPDATE;
+        projectList = null;
         root.removeAllViews();
         root.addView(createServerBar(), matchWrap());
         root.addView(createMainTabs(PAGE_UPDATE), new LinearLayout.LayoutParams(
@@ -412,6 +513,7 @@ public final class MainActivity extends Activity {
         closeTerminalSocket();
         activeSessionName = null;
         activeMainPage = PAGE_ABOUT;
+        projectList = null;
         root.removeAllViews();
         root.addView(createServerBar(), matchWrap());
         root.addView(createMainTabs(PAGE_ABOUT), new LinearLayout.LayoutParams(
@@ -505,6 +607,11 @@ public final class MainActivity extends Activity {
     }
 
     private void addContextActions(LinearLayout actionRow) {
+        if (PAGE_SERVERS.equals(activeMainPage)) {
+            actionRow.addView(toolbarButton("Use", view -> saveServerAndRefresh()));
+            actionRow.addView(toolbarButton("Probe", view -> probeSingleServer(currentUrlInput())));
+            return;
+        }
         if (PAGE_SESSIONS.equals(activeMainPage)) {
             actionRow.addView(toolbarButton("New", view -> promptCreateSession()));
             actionRow.addView(toolbarButton("Refresh", view -> refreshSessions()));
@@ -573,10 +680,8 @@ public final class MainActivity extends Activity {
         row.setOrientation(LinearLayout.HORIZONTAL);
         row.setGravity(Gravity.CENTER_VERTICAL);
         row.setPadding(dp(8), dp(4), dp(8), dp(4));
-        row.addView(navButton(PAGE_SESSIONS, selected, view -> {
-            renderSessionScreen();
-            refreshSessions();
-        }));
+        row.addView(navButton(PAGE_SERVERS, selected, view -> renderServerScreen()));
+        row.addView(navButton(PAGE_SESSIONS, selected, view -> openSessionPage()));
         row.addView(navButton(PAGE_PROJECTS, selected, view -> renderProjectsScreen()));
         row.addView(navButton(PAGE_TOOLS, selected, view -> renderToolsScreen()));
         row.addView(navButton(PAGE_UPDATE, selected, view -> renderUpdateScreen()));
@@ -694,7 +799,9 @@ public final class MainActivity extends Activity {
     private void selectServer(String url) {
         prefs.edit().putString("server_url", url).apply();
         api = new SessionApiClient(url);
-        urlField.setText(url);
+        if (urlField != null) {
+            urlField.setText(url);
+        }
         setStatus("Selected " + url);
         connectAppEvents();
         if (PAGE_SESSIONS.equals(activeMainPage)) {
@@ -704,6 +811,14 @@ public final class MainActivity extends Activity {
         }
     }
 
+    private String currentUrlInput() {
+        if (urlField == null) {
+            return getServerUrl();
+        }
+        String text = urlField.getText().toString().trim();
+        return text.isEmpty() ? getServerUrl() : text;
+    }
+
     private void refreshSessions() {
         setStatus("Loading sessions from " + api.getBaseUrl());
         progressBar.setVisibility(View.VISIBLE);
@@ -971,6 +1086,7 @@ public final class MainActivity extends Activity {
 
     private void openTerminal(String sessionName) {
         activeSessionName = sessionName;
+        projectList = null;
         terminalScreen = new TerminalScreenBuffer(DEFAULT_TERMINAL_COLS, DEFAULT_TERMINAL_ROWS);
         queuedTerminalInput.setLength(0);
         terminalConnected = false;
@@ -1036,10 +1152,7 @@ public final class MainActivity extends Activity {
         bar.setGravity(Gravity.CENTER_VERTICAL);
         bar.setPadding(dp(8), dp(6), dp(8), dp(6));
         bar.setBackgroundColor(Color.rgb(17, 20, 24));
-        bar.addView(toolbarButton("Back", view -> {
-            renderSessionScreen();
-            refreshSessions();
-        }));
+        bar.addView(toolbarButton("Back", view -> openSessionPage()));
         TextView title = new TextView(this);
         title.setText(sessionName);
         title.setTextColor(Color.WHITE);
@@ -1592,6 +1705,33 @@ public final class MainActivity extends Activity {
         });
     }
 
+    private void probeSingleServer(String url) {
+        String normalized = normalizeServerUrl(url);
+        progressBar.setVisibility(View.VISIBLE);
+        setStatus("Probing " + normalized);
+        executor.execute(() -> {
+            try {
+                SessionApiClient client = new SessionApiClient(normalized);
+                JSONObject health = new JSONObject(client.health());
+                List<SessionSummary> sessions = client.getSessions();
+                String text = normalized + "\n"
+                        + "ok: true\n"
+                        + "version: " + health.optString("version", "unknown")
+                        + " " + health.optString("commit", "") + "\n"
+                        + "sessions: " + sessions.size();
+                runOnUiThread(() -> {
+                    progressBar.setVisibility(View.GONE);
+                    showTextDialog("API probe", text);
+                });
+            } catch (Exception error) {
+                runOnUiThread(() -> {
+                    progressBar.setVisibility(View.GONE);
+                    showMessage("Probe failed: " + error.getMessage());
+                });
+            }
+        });
+    }
+
     private void openInstallPermissionSettings() {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
             showMessage("Install permission is allowed on this Android version");
@@ -1677,6 +1817,11 @@ public final class MainActivity extends Activity {
                     showMessage(label + " done");
                     if (PAGE_PROJECTS.equals(activeMainPage)) {
                         refreshProjects();
+                    } else if (PAGE_SESSIONS.equals(activeMainPage)) {
+                        refreshSessions();
+                        if (projectList != null) {
+                            refreshProjects();
+                        }
                     } else if (activeSessionName == null) {
                         refreshSessions();
                     }
@@ -2509,8 +2654,7 @@ public final class MainActivity extends Activity {
     @Override
     public void onBackPressed() {
         if (activeSessionName != null) {
-            renderSessionScreen();
-            refreshSessions();
+            openSessionPage();
             return;
         }
         super.onBackPressed();