Add terminal group switcher

.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

@@ -59,6 +59,7 @@ public final class MainActivity extends Activity {
     private static final int MAX_TERMINAL_COLS = 140;
     private static final int MIN_TERMINAL_ROWS = 8;
     private static final int MAX_TERMINAL_ROWS = 80;
+    private static final int TERMINAL_KEYS_HEIGHT_DP = 76;
     private static final int STATUS_NORMAL = 0;
     private static final int STATUS_BUSY = 1;
     private static final int STATUS_SUCCESS = 2;
@@ -67,11 +68,13 @@ 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";
     private static final String PAGE_UPDATE = "Update";
     private static final String PAGE_ABOUT = "About";
+    private static final String TERMINAL_ENTER = "\n";
     private static final String[] SERVER_PROFILES = {
             "http://100.89.0.116:3000",
             "http://100.89.0.2:3000",
@@ -96,8 +99,9 @@ public final class MainActivity extends Activity {
     private ScrollView terminalScroll;
     private EditText inputField;
     private View terminalComposerBar;
+    private LinearLayout terminalGroupRow;
     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 +137,7 @@ 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 +151,7 @@ public final class MainActivity extends Activity {
                 showMessage(message);
             }
         });
-        renderSessionScreen();
-        refreshSessions();
+        renderServerScreen();
         connectAppEvents();
         maybeCheckForUpdates();
     }
@@ -177,7 +180,9 @@ 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 +196,94 @@ 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 +296,23 @@ 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 +323,13 @@ 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 +345,7 @@ 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 +462,7 @@ 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 +516,7 @@ 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 +610,11 @@ 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 +683,8 @@ 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 +802,9 @@ 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 +814,14 @@ 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);
@@ -970,7 +1088,9 @@ public final class MainActivity extends Activity {
     }
 
     private void openTerminal(String sessionName) {
+        closeTerminalSocket();
         activeSessionName = sessionName;
+        projectList = null;
         terminalScreen = new TerminalScreenBuffer(DEFAULT_TERMINAL_COLS, DEFAULT_TERMINAL_ROWS);
         queuedTerminalInput.setLength(0);
         terminalConnected = false;
@@ -983,6 +1103,10 @@ public final class MainActivity extends Activity {
         terminalRows = DEFAULT_TERMINAL_ROWS;
         root.removeAllViews();
         root.addView(createTerminalTopBar(sessionName), matchWrap());
+        root.addView(createTerminalGroupBar(), new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                dp(38)
+        ));
 
         terminalScroll = new ScrollView(this);
         terminalScroll.setFillViewport(true);
@@ -1018,11 +1142,12 @@ public final class MainActivity extends Activity {
         root.addView(terminalComposerBar, matchWrap());
         root.addView(createAccessoryBar(), new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
-                dp(48)
+                dp(TERMINAL_KEYS_HEIGHT_DP)
         ));
         terminalScroll.post(() -> {
             resizeTerminalToViewport(false);
             connectTerminal(sessionName);
+            refreshTerminalGroupSessions(sessionName);
         });
         inputField.post(() -> {
             inputField.requestFocus();
@@ -1034,24 +1159,136 @@ public final class MainActivity extends Activity {
         LinearLayout bar = new LinearLayout(this);
         bar.setOrientation(LinearLayout.HORIZONTAL);
         bar.setGravity(Gravity.CENTER_VERTICAL);
-        bar.setPadding(dp(8), dp(6), dp(8), dp(6));
+        bar.setPadding(dp(5), dp(5), dp(5), dp(5));
         bar.setBackgroundColor(Color.rgb(17, 20, 24));
-        bar.addView(toolbarButton("Back", view -> {
-            renderSessionScreen();
-            refreshSessions();
-        }));
+        bar.addView(terminalToolButton("‹", view -> openSessionPage()));
         TextView title = new TextView(this);
         title.setText(sessionName);
         title.setTextColor(Color.WHITE);
-        title.setTextSize(16);
+        title.setTextSize(15);
         title.setTypeface(Typeface.DEFAULT_BOLD);
-        title.setPadding(dp(10), 0, dp(10), 0);
-        bar.addView(title, new LinearLayout.LayoutParams(0, dp(42), 1));
-        bar.addView(toolbarButton("Reconnect", view -> connectTerminal(sessionName)));
-        bar.addView(toolbarButton("More", view -> showTerminalActions(sessionName)));
+        title.setSingleLine(true);
+        title.setPadding(dp(8), 0, dp(8), 0);
+        bar.addView(title, new LinearLayout.LayoutParams(0, dp(36), 1));
+        bar.addView(terminalToolButton("↻", view -> connectTerminal(sessionName)));
+        bar.addView(terminalToolButton("⋯", view -> showTerminalActions(sessionName)));
         return bar;
     }
 
+    private HorizontalScrollView createTerminalGroupBar() {
+        HorizontalScrollView scroller = new HorizontalScrollView(this);
+        scroller.setHorizontalScrollBarEnabled(false);
+        scroller.setBackgroundColor(Color.rgb(13, 17, 22));
+
+        terminalGroupRow = new LinearLayout(this);
+        terminalGroupRow.setOrientation(LinearLayout.HORIZONTAL);
+        terminalGroupRow.setGravity(Gravity.CENTER_VERTICAL);
+        terminalGroupRow.setPadding(dp(5), dp(3), dp(5), dp(3));
+        terminalGroupRow.addView(groupLabel("group..."));
+
+        scroller.addView(terminalGroupRow, new HorizontalScrollView.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT,
+                ViewGroup.LayoutParams.MATCH_PARENT
+        ));
+        return scroller;
+    }
+
+    private void refreshTerminalGroupSessions(String sessionName) {
+        executor.execute(() -> {
+            try {
+                String text = api.kanbanProjects();
+                runOnUiThread(() -> renderTerminalGroupSessions(sessionName, text));
+            } catch (Exception error) {
+                runOnUiThread(() -> {
+                    if (sessionName.equals(activeSessionName) && terminalGroupRow != null) {
+                        terminalGroupRow.removeAllViews();
+                        terminalGroupRow.addView(groupLabel("group failed"));
+                    }
+                });
+            }
+        });
+    }
+
+    private void renderTerminalGroupSessions(String sessionName, String text) {
+        if (!sessionName.equals(activeSessionName) || terminalGroupRow == null) {
+            return;
+        }
+        terminalGroupRow.removeAllViews();
+        try {
+            JSONObject rootObject = new JSONObject(text == null || text.isEmpty() ? "{}" : text);
+            JSONArray projects = rootObject.optJSONArray("projects");
+            if (projects == null) {
+                terminalGroupRow.addView(groupLabel("no group"));
+                return;
+            }
+            for (int projectIndex = 0; projectIndex < projects.length(); projectIndex++) {
+                JSONObject project = projects.optJSONObject(projectIndex);
+                if (project == null) {
+                    continue;
+                }
+                JSONArray agents = project.optJSONArray("agents");
+                if (!projectContainsSession(agents, sessionName)) {
+                    continue;
+                }
+                terminalGroupRow.addView(groupLabel(compactLabel(project.optString("name", "group"), 14)));
+                for (int agentIndex = 0; agents != null && agentIndex < agents.length(); agentIndex++) {
+                    JSONObject agent = agents.optJSONObject(agentIndex);
+                    String agentSession = agentSessionName(agent);
+                    if (!agentSession.isEmpty()) {
+                        terminalGroupRow.addView(groupSessionButton(agentSession, agentSession.equals(sessionName)));
+                    }
+                }
+                return;
+            }
+            terminalGroupRow.addView(groupLabel("no group"));
+        } catch (Exception error) {
+            terminalGroupRow.addView(groupLabel("group parse"));
+        }
+    }
+
+    private boolean projectContainsSession(JSONArray agents, String sessionName) {
+        if (agents == null) {
+            return false;
+        }
+        for (int index = 0; index < agents.length(); index++) {
+            if (sessionName.equals(agentSessionName(agents.optJSONObject(index)))) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private String agentSessionName(JSONObject agent) {
+        if (agent == null) {
+            return "";
+        }
+        return defaultValue(agent.optString("sessionName", ""), agent.optString("name", ""));
+    }
+
+    private TextView groupLabel(String text) {
+        TextView label = new TextView(this);
+        label.setText(text);
+        label.setTextColor(Color.rgb(139, 148, 158));
+        label.setTextSize(11);
+        label.setTypeface(Typeface.DEFAULT_BOLD);
+        label.setGravity(Gravity.CENTER_VERTICAL);
+        label.setPadding(dp(5), 0, dp(6), 0);
+        return label;
+    }
+
+    private Button groupSessionButton(String sessionName, boolean active) {
+        Button button = terminalToolButton(compactLabel(sessionName, 12), view -> {
+            if (!sessionName.equals(activeSessionName)) {
+                openTerminal(sessionName);
+            }
+        });
+        if (active) {
+            button.setTextColor(Color.rgb(8, 12, 18));
+            button.setBackground(rounded(Color.rgb(86, 211, 219), 7, Color.rgb(86, 211, 219), 1));
+        }
+        return button;
+    }
+
     private void showSessionActions(String sessionName) {
         String[] items = {
                 "Status",
@@ -1212,12 +1449,18 @@ public final class MainActivity extends Activity {
         inputField.setCursorVisible(true);
         inputField.setFocusableInTouchMode(true);
         inputField.setGravity(Gravity.TOP | Gravity.START);
-        inputField.setImeOptions(EditorInfo.IME_ACTION_NONE);
+        inputField.setImeOptions(EditorInfo.IME_ACTION_SEND | EditorInfo.IME_FLAG_NO_EXTRACT_UI);
         inputField.setInputType(InputType.TYPE_CLASS_TEXT
                 | InputType.TYPE_TEXT_FLAG_MULTI_LINE
                 | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS);
         styleComposerInput(inputField);
         inputField.setOnEditorActionListener((view, actionId, event) -> {
+            if (actionId == EditorInfo.IME_ACTION_SEND
+                    || actionId == EditorInfo.IME_ACTION_GO
+                    || actionId == EditorInfo.IME_ACTION_DONE) {
+                sendLine();
+                return true;
+            }
             if (event != null
                     && event.getKeyCode() == KeyEvent.KEYCODE_ENTER
                     && event.isShiftPressed()
@@ -1592,6 +1835,33 @@ 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 +1947,11 @@ 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();
                     }
@@ -1758,21 +2033,41 @@ public final class MainActivity extends Activity {
         scroller.setHorizontalScrollBarEnabled(false);
         scroller.setBackgroundColor(Color.rgb(22, 27, 34));
 
-        LinearLayout row = new LinearLayout(this);
-        row.setOrientation(LinearLayout.HORIZONTAL);
-        row.setGravity(Gravity.CENTER_VERTICAL);
-        row.setPadding(dp(6), dp(4), dp(6), dp(4));
-        addAccessoryButton(row, "<", view -> setTerminalKeyPage(terminalKeyPage - 1));
-        addPageLabel(row);
-        addAccessoryPageKeys(row);
-        addAccessoryButton(row, ">", view -> setTerminalKeyPage(terminalKeyPage + 1));
-        scroller.addView(row, new HorizontalScrollView.LayoutParams(
+        LinearLayout pad = new LinearLayout(this);
+        pad.setOrientation(LinearLayout.VERTICAL);
+        pad.setPadding(dp(5), dp(4), dp(5), dp(4));
+
+        LinearLayout firstRow = terminalKeyRow();
+        LinearLayout secondRow = terminalKeyRow();
+        addAccessoryButton(firstRow, "<", view -> setTerminalKeyPage(terminalKeyPage - 1));
+        addPageLabel(firstRow);
+        addAccessoryPageKeys(firstRow, secondRow);
+        addAccessoryButton(firstRow, ">", view -> setTerminalKeyPage(terminalKeyPage + 1));
+        pad.addView(firstRow, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT,
+                0,
+                1
+        ));
+        pad.addView(secondRow, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT,
+                0,
+                1
+        ));
+
+        scroller.addView(pad, new HorizontalScrollView.LayoutParams(
                 ViewGroup.LayoutParams.WRAP_CONTENT,
                 ViewGroup.LayoutParams.MATCH_PARENT
         ));
         return scroller;
     }
 
+    private LinearLayout terminalKeyRow() {
+        LinearLayout row = new LinearLayout(this);
+        row.setOrientation(LinearLayout.HORIZONTAL);
+        row.setGravity(Gravity.CENTER_VERTICAL);
+        return row;
+    }
+
     private void addPageLabel(LinearLayout row) {
         TextView label = new TextView(this);
         label.setText(accessoryPageName());
@@ -1780,62 +2075,64 @@ public final class MainActivity extends Activity {
         label.setTextSize(11);
         label.setGravity(Gravity.CENTER);
         label.setTypeface(Typeface.DEFAULT_BOLD);
-        row.addView(label, new LinearLayout.LayoutParams(dp(58), ViewGroup.LayoutParams.MATCH_PARENT));
+        row.addView(label, new LinearLayout.LayoutParams(dp(44), ViewGroup.LayoutParams.MATCH_PARENT));
     }
 
-    private void addAccessoryPageKeys(LinearLayout row) {
+    private void addAccessoryPageKeys(LinearLayout topRow, LinearLayout bottomRow) {
         switch (terminalKeyPage) {
             case 1:
-                addSoftKey(row, "Esc", "\u001b");
-                addSoftKey(row, "Tab", "\t");
-                addSoftKey(row, "^C", "\u0003");
-                addSoftKey(row, "^D", "\u0004");
-                addSoftKey(row, "^L", "\u000c");
-                addSoftKey(row, "^R", "\u0012");
-                addSoftKey(row, "^A", "\u0001");
-                addSoftKey(row, "^E", "\u0005");
+                addSoftKey(topRow, "Esc", "\u001b");
+                addSoftKey(topRow, "Tab", "\t");
+                addSoftKey(topRow, "^C", "\u0003");
+                addSoftKey(topRow, "^D", "\u0004");
+                addSoftKey(topRow, "^L", "\u000c");
+                addSoftKey(bottomRow, "^R", "\u0012");
+                addSoftKey(bottomRow, "^A", "\u0001");
+                addSoftKey(bottomRow, "^E", "\u0005");
+                addSoftKey(bottomRow, "^U", "\u0015");
+                addSoftKey(bottomRow, "^K", "\u000b");
                 break;
             case 2:
-                addSoftKey(row, "Left", "\u001b[D");
-                addSoftKey(row, "Right", "\u001b[C");
-                addSoftKey(row, "Up", "\u001b[A");
-                addSoftKey(row, "Down", "\u001b[B");
-                addSoftKey(row, "Home", "\u001b[H");
-                addSoftKey(row, "End", "\u001b[F");
-                addSoftKey(row, "PgUp", "\u001b[5~");
-                addSoftKey(row, "PgDn", "\u001b[6~");
-                addSoftKey(row, "Tmux", "\u0002");
-                addSoftKey(row, "Detach", "\u0002d");
-                addSoftKey(row, "New", "\u0002c");
-                addSoftKey(row, "Prev", "\u0002p");
-                addSoftKey(row, "Next", "\u0002n");
+                addSoftKey(topRow, "←", "\u001b[D");
+                addSoftKey(topRow, "→", "\u001b[C");
+                addSoftKey(topRow, "↑", "\u001b[A");
+                addSoftKey(topRow, "↓", "\u001b[B");
+                addSoftKey(topRow, "Hm", "\u001b[H");
+                addSoftKey(bottomRow, "End", "\u001b[F");
+                addSoftKey(bottomRow, "Pg↑", "\u001b[5~");
+                addSoftKey(bottomRow, "Pg↓", "\u001b[6~");
+                addSoftKey(bottomRow, "^B", "\u0002");
+                addSoftKey(bottomRow, "Dch", "\u0002d");
+                addSoftKey(bottomRow, "New", "\u0002c");
+                addSoftKey(bottomRow, "Prev", "\u0002p");
+                addSoftKey(bottomRow, "Next", "\u0002n");
                 break;
             case 3:
-                addTextKey(row, "/", "/");
-                addTextKey(row, "-", "-");
-                addTextKey(row, "_", "_");
-                addTextKey(row, ".", ".");
-                addTextKey(row, "~", "~");
-                addTextKey(row, "|", "|");
-                addTextKey(row, "&", "&");
-                addTextKey(row, ";", ";");
-                addTextKey(row, "$", "$");
-                addTextKey(row, "Space", " ");
+                addTextKey(topRow, "/", "/");
+                addTextKey(topRow, "-", "-");
+                addTextKey(topRow, "_", "_");
+                addTextKey(topRow, ".", ".");
+                addTextKey(topRow, "~", "~");
+                addTextKey(bottomRow, "|", "|");
+                addTextKey(bottomRow, "&", "&");
+                addTextKey(bottomRow, ";", ";");
+                addTextKey(bottomRow, "$", "$");
+                addTextKey(bottomRow, "Space", " ");
                 break;
             case 0:
             default:
-                addComposerButton(row, "Left", () -> moveComposerCursor(-1));
-                addComposerButton(row, "Right", () -> moveComposerCursor(1));
-                addSoftKey(row, "Up", "\u001b[A");
-                addSoftKey(row, "Down", "\u001b[B");
-                addSoftKey(row, "Enter", "\r");
-                addAccessoryButton(row, "NL", view -> insertComposerText("\n"));
-                addSoftButton(row, "Paste", view -> pasteClipboard());
-                addAccessoryButton(row, "Back", view -> backspaceComposerText());
-                addAccessoryButton(row, "Kbd", view -> showKeyboard());
-                addAccessoryButton(row, "Hide", view -> hideKeyboard());
-                addAccessoryButton(row, "Bottom", view -> scrollTerminalBottom());
-                addAccessoryButton(row, "Select", view -> toggleTerminalSelection());
+                addComposerButton(topRow, "←", () -> moveComposerCursor(-1));
+                addComposerButton(topRow, "→", () -> moveComposerCursor(1));
+                addSoftKey(topRow, "↑", "\u001b[A");
+                addSoftKey(topRow, "↓", "\u001b[B");
+                addSoftKey(topRow, "↵", TERMINAL_ENTER);
+                addAccessoryButton(topRow, "NL", view -> insertComposerText("\n"));
+                addSoftButton(bottomRow, "Pst", view -> pasteClipboard());
+                addAccessoryButton(bottomRow, "⌫", view -> backspaceComposerText());
+                addAccessoryButton(bottomRow, "⌨", view -> showKeyboard());
+                addAccessoryButton(bottomRow, "⌄", view -> hideKeyboard());
+                addAccessoryButton(bottomRow, "⇣", view -> scrollTerminalBottom());
+                addAccessoryButton(bottomRow, "Sel", view -> toggleTerminalSelection());
                 break;
         }
     }
@@ -1936,17 +2233,16 @@ public final class MainActivity extends Activity {
         }
         String text = inputField.getText().toString();
         if (text.isEmpty()) {
-            sendTerminalInput("\r");
+            sendTerminalInput(TERMINAL_ENTER);
             return;
         }
-        String normalized = text.replace("\r\n", "\n").replace('\r', '\n').replace('\n', '\r');
-        if (!normalized.endsWith("\r")) {
-            normalized = normalized + "\r";
+        String normalized = text.replace("\r\n", "\n").replace('\r', '\n');
+        if (!normalized.endsWith(TERMINAL_ENTER)) {
+            normalized = normalized + TERMINAL_ENTER;
         }
         terminalFollowOutput = true;
         sendTerminalInput(normalized);
         inputField.setText("");
-        hideKeyboard();
         setStatus("Sent " + text.length() + " chars");
     }
 
@@ -2093,7 +2389,7 @@ public final class MainActivity extends Activity {
         root.removeViewAt(composerIndex + 1);
         root.addView(createAccessoryBar(), composerIndex + 1, new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
-                dp(48)
+                dp(TERMINAL_KEYS_HEIGHT_DP)
         ));
     }
 
@@ -2223,6 +2519,22 @@ public final class MainActivity extends Activity {
         return button;
     }
 
+    private Button terminalToolButton(String label, View.OnClickListener listener) {
+        Button button = toolbarButton(label, listener);
+        button.setTextSize(label.length() <= 2 ? 16 : 10);
+        button.setPadding(dp(5), 0, dp(5), 0);
+        button.setMinWidth(dp(label.length() <= 2 ? 36 : 48));
+        button.setMinimumWidth(dp(label.length() <= 2 ? 36 : 48));
+        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.WRAP_CONTENT,
+                dp(30)
+        );
+        params.leftMargin = dp(2);
+        params.rightMargin = dp(2);
+        button.setLayoutParams(params);
+        return button;
+    }
+
     private void styleInput(EditText input) {
         input.setTextColor(Color.rgb(240, 246, 252));
         input.setHintTextColor(Color.rgb(139, 148, 158));
@@ -2286,14 +2598,24 @@ public final class MainActivity extends Activity {
 
     private void addSoftButton(LinearLayout row, String label, View.OnClickListener listener) {
         Button button = toolbarButton(label, listener);
-        button.setTextSize(11);
-        button.setPadding(dp(8), 0, dp(8), 0);
-        button.setMinWidth(dp("Space".equals(label) ? 72 : 50));
-        button.setMinimumWidth(dp("Space".equals(label) ? 72 : 50));
-        row.addView(button, new LinearLayout.LayoutParams(
+        button.setTextSize(isArrowLabel(label) ? 17 : 10);
+        button.setPadding(dp(5), 0, dp(5), 0);
+        int width = "Space".equals(label) ? 64 : (isArrowLabel(label) ? 38 : 44);
+        button.setMinWidth(dp(width));
+        button.setMinimumWidth(dp(width));
+        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.WRAP_CONTENT,
                 ViewGroup.LayoutParams.MATCH_PARENT
-        ));
+        );
+        params.leftMargin = dp(2);
+        params.rightMargin = dp(2);
+        params.topMargin = dp(1);
+        params.bottomMargin = dp(1);
+        row.addView(button, params);
+    }
+
+    private boolean isArrowLabel(String label) {
+        return "←".equals(label) || "→".equals(label) || "↑".equals(label) || "↓".equals(label);
     }
 
     private TextView bodyText(String text) {
@@ -2312,6 +2634,17 @@ public final class MainActivity extends Activity {
         return value == null || value.isEmpty() ? fallback : value;
     }
 
+    private String compactLabel(String value, int maxChars) {
+        if (value == null) {
+            return "";
+        }
+        String trimmed = value.trim();
+        if (trimmed.length() <= maxChars) {
+            return trimmed;
+        }
+        return trimmed.substring(0, Math.max(1, maxChars - 1)) + "…";
+    }
+
     private LinearLayout.LayoutParams matchWrap() {
         return new LinearLayout.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
@@ -2509,8 +2842,7 @@ public final class MainActivity extends Activity {
     @Override
     public void onBackPressed() {
         if (activeSessionName != null) {
-            renderSessionScreen();
-            refreshSessions();
+            openSessionPage();
             return;
         }
         super.onBackPressed();

scripts/mirror-gitea-release.sh

@@ -0,0 +1,115 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat >&2 <<'EOF'
+Usage: scripts/mirror-gitea-release.sh TAG APK_PATH [VERSION_CODE] [VERSION_NAME]
+
+Mirrors an already-built APK to the Gitea release for TAG and uploads a
+Gitea-specific latest.json.
+
+Token source:
+  TMUX_GITEA_TOKEN environment variable, or hidden stdin prompt.
+EOF
+}
+
+if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
+  usage
+  exit 0
+fi
+
+if [ "$#" -lt 2 ] || [ "$#" -gt 4 ]; then
+  usage
+  exit 2
+fi
+
+TAG="$1"
+APK_PATH="$2"
+VERSION_NAME="${4:-${TAG#v}}"
+
+if [ ! -f "$APK_PATH" ]; then
+  echo "APK not found: $APK_PATH" >&2
+  exit 1
+fi
+
+if [ -n "${3:-}" ]; then
+  VERSION_CODE="$3"
+else
+  IFS=. read -r MAJOR MINOR PATCH <<EOF
+$VERSION_NAME
+EOF
+  VERSION_CODE=$((MAJOR * 1000000 + MINOR * 1000 + PATCH))
+fi
+
+TOKEN="${TMUX_GITEA_TOKEN:-}"
+if [ -z "$TOKEN" ]; then
+  printf "Gitea token: " >&2
+  IFS= read -rs TOKEN
+  printf "\n" >&2
+fi
+
+if [ -z "$TOKEN" ]; then
+  echo "Missing Gitea token." >&2
+  exit 1
+fi
+
+API_ROOT="https://gitea.neatcn.com/api/v1/repos/tmux/tmux-browser-android"
+RELEASE_PAGE_URL="https://gitea.neatcn.com/tmux/tmux-browser-android/releases/tag/${TAG}"
+APK_URL="https://gitea.neatcn.com/tmux/tmux-browser-android/releases/download/${TAG}/tmux-android.apk"
+SHA256="$(sha256sum "$APK_PATH" | cut -d " " -f 1)"
+WORK_DIR="$(mktemp -d)"
+trap 'rm -rf "$WORK_DIR"' EXIT
+
+LATEST_JSON="${WORK_DIR}/latest.json"
+cat > "$LATEST_JSON" <<JSON
+{
+  "versionCode": ${VERSION_CODE},
+  "versionName": "${VERSION_NAME}",
+  "apkUrl": "${APK_URL}",
+  "sha256": "${SHA256}",
+  "releasePageUrl": "${RELEASE_PAGE_URL}",
+  "minSdk": 26
+}
+JSON
+
+RELEASE_JSON="${WORK_DIR}/release.json"
+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 ${TOKEN}" \
+  -H "Content-Type: application/json" \
+  -d "$BODY" \
+  "${API_ROOT}/releases" \
+  -o "$RELEASE_JSON"; then
+  curl -fsSL \
+    -H "Authorization: token ${TOKEN}" \
+    "${API_ROOT}/releases/tags/${TAG}" \
+    -o "$RELEASE_JSON"
+fi
+
+RELEASE_ID="$(sed -n 's/^{"id":\([0-9][0-9]*\),.*/\1/p' "$RELEASE_JSON" | head -1)"
+if [ -z "$RELEASE_ID" ]; then
+  echo "Cannot resolve Gitea release id for ${TAG}." >&2
+  exit 1
+fi
+
+upload_asset() {
+  local file="$1"
+  local name="$2"
+  local type="$3"
+  curl -fsSL \
+    -X POST \
+    -H "Authorization: token ${TOKEN}" \
+    -F "attachment=@${file};type=${type}" \
+    "${API_ROOT}/releases/${RELEASE_ID}/assets?name=${name}" \
+    -o "${WORK_DIR}/${name}.asset.json"
+}
+
+upload_asset "$APK_PATH" "tmux-android.apk" "application/vnd.android.package-archive"
+upload_asset "$LATEST_JSON" "latest.json" "application/json"
+
+echo "Mirrored ${TAG} to Gitea release ${RELEASE_ID}"
+echo "versionCode=${VERSION_CODE}"
+echo "versionName=${VERSION_NAME}"
+echo "sha256=${SHA256}"