Merge pull request #9223 from ThomasWaldmann/cockpit

borg --cockpit: show TUI based on Textual

pyproject.toml

@@ -46,6 +46,7 @@ pyfuse3 = ["pyfuse3 >= 3.1.1"]
 nofuse = []
 s3 = ["borgstore[s3] ~= 0.3.0"]
 sftp = ["borgstore[sftp] ~= 0.3.0"]
+cockpit = ["textual>=6.8.0"]  # might also work with older versions, untested
 
 [project.urls]
 "Homepage" = "https://borgbackup.org/"

src/borg/archiver/__init__.py

@@ -337,6 +337,7 @@ class Archiver(
         parser.add_argument(
             "-V", "--version", action="version", version="%(prog)s " + __version__, help="show version number and exit"
         )
+        parser.add_argument("--cockpit", dest="cockpit", action="store_true", help="Start the Borg TUI")
         parser.common_options.add_common_group(parser, "_maincommand", provide_defaults=True)
 
         common_parser = argparse.ArgumentParser(add_help=False, prog=self.prog)
@@ -646,6 +647,23 @@ def main():  # pragma: no cover
             print(msg, file=sys.stderr)
             print(tb, file=sys.stderr)
             sys.exit(EXIT_ERROR)
+
+        if args.cockpit:
+            # Cockpit TUI operation
+            try:
+                from ..cockpit.app import BorgCockpitApp
+            except ImportError as err:
+                print(f"ImportError: {err}", file=sys.stderr)
+                print("The Borg Cockpit feature has some additional requirements.", file=sys.stderr)
+                print("Please install them using: pip install 'borgbackup[cockpit]'", file=sys.stderr)
+                sys.exit(EXIT_ERROR)
+
+            app = BorgCockpitApp()
+            app.borg_args = [arg for arg in sys.argv[1:] if arg != "--cockpit"]
+            app.run()
+            sys.exit(EXIT_SUCCESS)  # borg subprocess RC was already shown on the TUI
+
+        # normal borg CLI operation
         try:
             with sig_int:
                 exit_code = archiver.run(args)

src/borg/cockpit/__init__.py

@@ -0,0 +1,5 @@
+"""
+Borg Cockpit - Terminal User Interface for BorgBackup.
+
+This module contains the TUI implementation using Textual.
+"""

src/borg/cockpit/app.py

@@ -0,0 +1,124 @@
+"""
+Borg Cockpit - Application Entry Point.
+"""
+
+import asyncio
+import time
+
+from textual.app import App, ComposeResult
+from textual.widgets import Header, Footer
+from textual.containers import Horizontal, Container
+
+from .theme import theme
+
+
+class BorgCockpitApp(App):
+    """The main TUI Application class for Borg Cockpit."""
+
+    from .. import __version__ as BORG_VERSION
+
+    TITLE = f"Cockpit for BorgBackup {BORG_VERSION}"
+    CSS_PATH = "cockpit.tcss"
+    BINDINGS = [("q", "quit", "Quit"), ("ctrl+c", "quit", "Quit"), ("t", "toggle_translator", "Toggle Translator")]
+
+    def compose(self) -> ComposeResult:
+        """Create child widgets for the app."""
+        from .widgets import LogoPanel, StatusPanel, StandardLog
+
+        yield Header(show_clock=True)
+
+        with Container(id="main-grid"):
+            with Horizontal(id="top-row"):
+                yield LogoPanel(id="logopanel")
+                yield StatusPanel(id="status")
+
+            yield StandardLog(id="standard-log")
+
+        yield Footer()
+
+    def get_theme_variable_defaults(self):
+        # make these variables available to ALL themes
+        return {
+            "pulsar-color": "#ffffff",
+            "pulsar-dim-color": "#000000",
+            "star-color": "#888888",
+            "star-bright-color": "#ffffff",
+            "logo-color": "#00dd00",
+        }
+
+    def on_load(self) -> None:
+        """Initialize theme before UI."""
+        self.register_theme(theme)
+        self.theme = theme.name
+
+    def on_mount(self) -> None:
+        """Initialize components."""
+        from .runner import BorgRunner
+
+        self.query_one("#logo").styles.animate("opacity", 1, duration=1)
+        self.query_one("#slogan").styles.animate("opacity", 1, duration=1)
+
+        self.start_time = time.monotonic()
+        self.process_running = True
+        args = getattr(self, "borg_args", ["--version"])  # Default to safe command if none passed
+        self.runner = BorgRunner(args, self.handle_log_event)
+        self.runner_task = asyncio.create_task(self.runner.start())
+
+        # Speed tracking
+        self.total_lines_processed = 0
+        self.last_lines_processed = 0
+        self.speed_timer = self.set_interval(1.0, self.compute_speed)
+
+    def compute_speed(self) -> None:
+        """Calculate and update speed (lines per second)."""
+        current_lines = self.total_lines_processed
+        lines_per_second = float(current_lines - self.last_lines_processed)
+        self.last_lines_processed = current_lines
+
+        status_panel = self.query_one("#status")
+        status_panel.update_speed(lines_per_second / 1000)
+        if self.process_running:
+            status_panel.elapsed_time = time.monotonic() - self.start_time
+
+    async def on_unmount(self) -> None:
+        """Cleanup resources on app shutdown."""
+        if hasattr(self, "runner"):
+            await self.runner.stop()
+
+    async def action_quit(self) -> None:
+        """Handle quit action."""
+        if hasattr(self, "speed_timer"):
+            self.speed_timer.stop()
+        if hasattr(self, "runner"):
+            await self.runner.stop()
+        if hasattr(self, "runner_task"):
+            await self.runner_task
+        self.query_one("#logo").styles.animate("opacity", 0, duration=2)
+        self.query_one("#slogan").styles.animate("opacity", 0, duration=2)
+        await asyncio.sleep(2)  # give the user a chance the see the borg RC
+        self.exit()
+
+    def action_toggle_translator(self) -> None:
+        """Toggle the universal translator."""
+        from .translator import TRANSLATOR
+
+        TRANSLATOR.toggle()
+        # Refresh dynamic UI elements
+        self.query_one("#status").refresh_ui_labels()
+        self.query_one("#standard-log").update_title()
+        self.query_one("#slogan").update_slogan()
+
+    def handle_log_event(self, data: dict):
+        """Process a event from BorgRunner."""
+        msg_type = data.get("type", "log")
+
+        if msg_type == "stream_line":
+            self.total_lines_processed += 1
+            line = data.get("line", "")
+            widget = self.query_one("#standard-log")
+            widget.add_line(line)
+
+        elif msg_type == "process_finished":
+            self.process_running = False
+            rc = data.get("rc", 0)
+            self.query_one("#status").rc = rc

src/borg/cockpit/cockpit.tcss

@@ -0,0 +1,201 @@
+/* Borg Cockpit Stylesheet */
+
+Screen {
+    background: $surface;
+}
+
+Header {
+    dock: top;
+    background: $primary;
+    color: $secondary;
+    text-style: bold;
+}
+
+Header * {
+    background: $primary;
+    color: $secondary;
+    text-style: bold;
+}
+
+.header--clock, .header--title, .header--icon {
+    background: $primary;
+    color: $secondary;
+    text-style: bold;
+}
+
+.header--clock {
+    dock: right;
+}
+
+Footer {
+    background: $background;
+    color: $primary;
+    dock: bottom;
+}
+
+.footer--key {
+    background: $background;
+    color: $primary;
+    text-style: bold;
+}
+
+.footer--description {
+    background: $background;
+    color: $primary;
+    text-style: bold;
+}
+
+.footer--highlight {
+    background: $primary;
+    color: $secondary;
+}
+
+#standard-log-content {
+    scrollbar-background: $background;
+    scrollbar-color: $primary;
+    /* Hide horizontal scrollbar and clip long lines at the right */
+    overflow-x: hidden;
+    text-wrap: nowrap;
+}
+
+#standard-log {
+    border: double $primary;
+}
+
+#main-grid {
+    /* Simple vertical stack: top row content-sized, log fills remaining space */
+    layout: vertical;
+    /* Fill available area between header and footer */
+    height: 1fr;
+    /* Allow shrinking when space is tight */
+    min-height: 0;
+    margin: 0 1;
+}
+
+#top-row {
+    border: double $primary;
+    /* If content grows too large, scroll rather than pushing the log off-screen */
+    overflow-y: auto;
+    /* Adjust this if status or logo panel shall get more/less height. */
+    height: 16;
+}
+
+#logopanel {
+    width: 50%;
+    /* Stretch to the full height of the top row so the separator spans fully */
+    height: 100%;
+    border-right: double $primary;
+    text-align: center;
+    layers: base overlay;
+    /* Make logo panel not influence row height beyond status; clip overflow */
+    overflow: hidden;
+}
+
+Starfield {
+    layer: base;
+    width: 100%;
+    /* Size to content and get clipped by the panel */
+    height: 100%;
+    min-height: 0;
+}
+
+Pulsar {
+    layer: overlay;
+    width: 3;
+    height: 3;
+    content-align: center middle;
+    color: $pulsar-color;
+    transition: color 4s linear;
+}
+
+Slogan {
+    layer: overlay;
+    width: auto;
+    height: 1;
+    content-align: center middle;
+    color: #00ff00;
+    transition: color 1s linear;
+    opacity: 0;
+    max-height: 100%;
+    overflow: hidden;
+}
+
+Logo {
+    layer: overlay;
+    width: auto;
+    /* Size to its intrinsic content, clipped by the panel */
+    height: auto;
+    opacity: 0;
+    max-height: 100%;
+    overflow: hidden;
+}
+
+Slogan.dim {
+    color: #005500;
+}
+
+Pulsar.dim {
+    color: $pulsar-dim-color;
+}
+
+#status {
+    width: 50%;
+    /* Let height be determined by content so the row can size to content */
+    height: auto;
+    /* Prevent internal content from forcing excessive height; allow scrolling */
+    overflow-y: auto;
+}
+
+/* Ensure the log always keeps at least 5 rows visible */
+#standard-log {
+    min-height: 5;
+    /* Explicitly claim the remaining space in the grid */
+    height: 1fr;
+}
+
+/* Within the log panel (a Vertical container), keep the title to 1 line and let content fill the rest */
+#standard-log-title {
+    height: 1;
+}
+
+#standard-log-content {
+    /* Allow the RichLog to expand within the log panel */
+    height: 1fr;
+}
+
+.panel-title {
+    background: $primary;
+    color: $secondary;
+    padding: 0 1;
+    text-style: bold;
+}
+
+#speed-sparkline {
+    width: 100%;
+    height: 4;
+    margin-bottom: 1;
+}
+
+.status {
+    color: $primary;
+}
+
+.errors-ok {
+    color: $success;
+}
+
+.errors-warning {
+    color: $warning;
+}
+
+.rc-ok {
+    color: $success;
+}
+
+.rc-warning {
+    color: $warning;
+}
+
+.rc-error {
+    color: $error;
+}

src/borg/cockpit/runner.py

@@ -0,0 +1,74 @@
+"""
+Borg Runner - Manages Borg subprocess execution and output parsing.
+"""
+
+import asyncio
+import logging
+import os
+import sys
+from typing import Optional, Callable, List
+
+
+class BorgRunner:
+    """
+    Manages the execution of the borg subprocess and parses its JSON output.
+    """
+
+    def __init__(self, command: List[str], log_callback: Callable[[dict], None]):
+        self.command = command
+        self.log_callback = log_callback
+        self.process: Optional[asyncio.subprocess.Process] = None
+        self.logger = logging.getLogger(__name__)
+
+    async def start(self):
+        """
+        Starts the Borg subprocess and processes its output.
+        """
+        if self.process is not None:
+            self.logger.warning("Borg process already running.")
+            return
+
+        cmd = [sys.executable, "-m", "borg"] + self.command
+
+        self.logger.info(f"Starting Borg process: {cmd}")
+
+        env = os.environ.copy()
+        env["PYTHONUNBUFFERED"] = "1"
+
+        try:
+            self.process = await asyncio.create_subprocess_exec(
+                *cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE, env=env
+            )
+
+            async def read_stream(stream, stream_name):
+                while True:
+                    line = await stream.readline()
+                    if not line:
+                        break
+                    decoded_line = line.decode("utf-8", errors="replace").rstrip()
+                    if decoded_line:
+                        self.log_callback({"type": "stream_line", "stream": stream_name, "line": decoded_line})
+
+            # Read both streams concurrently
+            await asyncio.gather(read_stream(self.process.stdout, "stdout"), read_stream(self.process.stderr, "stderr"))
+
+            rc = await self.process.wait()
+            self.log_callback({"type": "process_finished", "rc": rc})
+
+        except Exception as e:
+            self.logger.error(f"Failed to run Borg process: {e}")
+            self.log_callback({"type": "process_finished", "rc": -1, "error": str(e)})
+        finally:
+            self.process = None
+
+    async def stop(self):
+        """
+        Stops the Borg subprocess if it is running.
+        """
+        if self.process and self.process.returncode is None:
+            self.logger.info("Terminating Borg process...")
+            try:
+                self.process.terminate()
+                await self.process.wait()
+            except ProcessLookupError:
+                pass  # Process already dead

src/borg/cockpit/theme.py

@@ -0,0 +1,29 @@
+"""
+Borg Theme Definition.
+"""
+
+from textual.theme import Theme
+
+theme = Theme(
+    name="borg",
+    primary="#00FF00",
+    secondary="#000000",  # text on top of $primary background
+    error="#FF0000",
+    warning="#FFA500",
+    success="#00FF00",
+    accent="#00FF00",  # highlighted interactive elements
+    foreground="#00FF00",  # default text color
+    background="#000000",
+    surface="#000000",  # bg col of lowest layer
+    panel="#444444",  # bg col of panels, containers, cards, sidebars, modal dialogs, etc.
+    dark=True,
+    variables={
+        "block-cursor-text-style": "none",
+        "input-selection-background": "#00FF00 35%",
+        "pulsar-color": "#ffffff",
+        "pulsar-dim-color": "#000000",
+        "star-color": "#888888",
+        "star-bright-color": "#ffffff",
+        "logo-color": "#00dd00",
+    },
+)

src/borg/cockpit/translator.py

@@ -0,0 +1,55 @@
+"""
+Universal Translator - Converts standard English into Borg Speak.
+"""
+
+BORG_DICTIONARY = {  # English -> Borg
+    # UI Strings
+    "**** You're welcome! ****": "You will be assimilated! ",
+    "Files: ": "Drones: ",
+    "Unchanged: ": "Unchanged: ",
+    "Modified: ": "Modified: ",
+    "Added: ": "Assimilated: ",
+    "Other: ": "Other: ",
+    "Errors: ": "Escaped: ",
+    "RC: ": "Termination Code: ",
+    "Log": "Subspace Transmissions",
+}
+
+
+class UniversalTranslator:
+    """
+    Handles translation of log messages.
+    """
+
+    def __init__(self, enabled: bool = True):
+        # self.enabled is the opposite of "Translator active" on the TUI,
+        # because in the source, we translate English to Borg.
+        self.enabled = enabled  # True: English -> Borg
+
+    def toggle(self):
+        """Toggle translation state."""
+        self.enabled = not self.enabled
+        return self.enabled
+
+    def translate(self, message: str) -> str:
+        """Translate a message if enabled."""
+        if not self.enabled:
+            return message
+
+        # Full matching first
+        if message in BORG_DICTIONARY:
+            return BORG_DICTIONARY[message]
+
+        # Substring matching next
+        for key, value in BORG_DICTIONARY.items():
+            if key in message:
+                return message.replace(key, value)
+
+        return message
+
+
+# Global Instance
+TRANSLATOR = UniversalTranslator(enabled=False)
+
+# Global translation function
+T = TRANSLATOR.translate

src/borg/cockpit/widgets.py

@@ -0,0 +1,430 @@
+"""
+Borg Cockpit - UI Widgets.
+"""
+
+import random
+import time
+
+from rich.markup import escape
+from textual.app import ComposeResult
+from textual.reactive import reactive
+from textual.widgets import Static, RichLog
+from textual.containers import Vertical, Container
+from ..helpers import classify_ec
+from .translator import T, TRANSLATOR
+
+
+class StatusPanel(Static):
+    elapsed_time = reactive(0.0, init=False)
+    files_count = reactive(0, init=False)  # unchanged + modified + added + other + error
+    unchanged_count = reactive(0, init=False)
+    modified_count = reactive(0, init=False)
+    added_count = reactive(0, init=False)
+    other_count = reactive(0, init=False)
+    error_count = reactive(0, init=False)
+    rc = reactive(None, init=False)
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.speed_history = [0.0] * SpeedSparkline.HISTORY_SIZE
+
+    def compose(self) -> ComposeResult:
+        with Vertical():
+            yield SpeedSparkline(self.speed_history, id="speed-sparkline")
+            yield Static(T("Speed: 0/s"), id="status-speed")
+
+            with Vertical(id="statuses"):
+                yield Static(T("Elapsed: 00d 00:00:00"), classes="status", id="status-elapsed")
+                yield Static(T("Files: 0"), classes="status", id="status-files")
+                yield Static(T("Unchanged: 0"), classes="status", id="status-unchanged")
+                yield Static(T("Modified: 0"), classes="status", id="status-modified")
+                yield Static(T("Added: 0"), classes="status", id="status-added")
+                yield Static(T("Other: 0"), classes="status", id="status-other")
+                yield Static(T("Errors: 0"), classes="status error-ok", id="status-errors")
+                yield Static(T("RC: RUNNING"), classes="status", id="status-rc")
+
+    def update_speed(self, kfiles_per_second: float):
+        self.speed_history.append(kfiles_per_second)
+        self.speed_history = self.speed_history[-SpeedSparkline.HISTORY_SIZE :]
+        # Use our custom update method
+        self.query_one("#speed-sparkline").update_data(self.speed_history)
+        self.query_one("#status-speed").update(T(f"Speed: {int(kfiles_per_second * 1000)}/s"))
+
+    def watch_error_count(self, count: int) -> None:
+        sw = self.query_one("#status-errors")
+        if count == 0:
+            sw.remove_class("errors-warning")
+            sw.add_class("errors-ok")
+        else:
+            sw.remove_class("errors-ok")
+            sw.add_class("errors-warning")
+        sw.update(T(f"Errors: {count}"))
+
+    def watch_files_count(self, count: int) -> None:
+        self.query_one("#status-files").update(T(f"Files: {count}"))
+
+    def watch_unchanged_count(self, count: int) -> None:
+        self.query_one("#status-unchanged").update(T(f"Unchanged: {count}"))
+
+    def watch_modified_count(self, count: int) -> None:
+        self.query_one("#status-modified").update(T(f"Modified: {count}"))
+
+    def watch_added_count(self, count: int) -> None:
+        self.query_one("#status-added").update(T(f"Added: {count}"))
+
+    def watch_other_count(self, count: int) -> None:
+        self.query_one("#status-other").update(T(f"Other: {count}"))
+
+    def watch_rc(self, rc: int):
+        label = self.query_one("#status-rc")
+        if rc is None:
+            label.update(T("RC: RUNNING"))
+            return
+
+        label.remove_class("rc-ok")
+        label.remove_class("rc-warning")
+        label.remove_class("rc-error")
+
+        status = classify_ec(rc)
+        if status == "success":
+            label.add_class("rc-ok")
+        elif status == "warning":
+            label.add_class("rc-warning")
+        else:  # error, signal
+            label.add_class("rc-error")
+
+        label.update(T(f"RC: {rc}"))
+
+    def watch_elapsed_time(self, elapsed: float) -> None:
+        if TRANSLATOR.enabled:
+            # There seems to be no official formula for stardates, so we make something up.
+            # When showing the stardate, it is an absolute time, not relative "elapsed time".
+            ut = time.time()
+            sd = (ut - 1735689600) / 60.0  # Minutes since 2025-01-01 00:00.00 UTC
+            msg = f"Stardate {sd:.1f}"
+        else:
+            seconds = int(elapsed)
+            days, seconds = divmod(seconds, 86400)
+            h, m, s = seconds // 3600, (seconds % 3600) // 60, seconds % 60
+            msg = f"Elapsed: {days:02d}d {h:02d}:{m:02d}:{s:02d}"
+        self.query_one("#status-elapsed").update(msg)
+
+    def refresh_ui_labels(self):
+        """Update static UI labels with current translation."""
+        self.watch_elapsed_time(self.elapsed_time)
+        self.query_one("#status-files").update(T(f"Files: {self.files_count}"))
+        self.query_one("#status-unchanged").update(T(f"Unchanged: {self.unchanged_count}"))
+        self.query_one("#status-modified").update(T(f"Modified: {self.modified_count}"))
+        self.query_one("#status-added").update(T(f"Added: {self.added_count}"))
+        self.query_one("#status-other").update(T(f"Other: {self.other_count}"))
+        self.query_one("#status-errors").update(T(f"Errors: {self.error_count}"))
+
+        if self.rc is not None:
+            self.watch_rc(self.rc)
+        else:
+            self.query_one("#status-rc").update(T("RC: RUNNING"))
+
+
+class StandardLog(Vertical):
+    def compose(self) -> ComposeResult:
+        yield Static(T("Log"), classes="panel-title", id="standard-log-title")
+        yield RichLog(id="standard-log-content", highlight=False, markup=True, auto_scroll=True, max_lines=None)
+
+    def update_title(self):
+        self.query_one("#standard-log-title").update(T("Log"))
+
+    def add_line(self, line: str):
+        # TODO: make this more generic, use json output from borg.
+        # currently, this is only really useful for borg create/extract --list
+        line = line.rstrip()
+        if len(line) == 0:
+            return
+
+        markup_tag = None
+        if len(line) >= 2:
+            if line[1] == " " and line[0] in "EAMUdcbs+-":
+                # looks like from borg create/extract --list
+                status_panel = self.app.query_one("#status")
+                status_panel.files_count += 1
+                status = line[0]
+                if status == "E":
+                    status_panel.error_count += 1
+                elif status in "U-":
+                    status_panel.unchanged_count += 1
+                elif status in "M":
+                    status_panel.modified_count += 1
+                elif status in "A+":
+                    status_panel.added_count += 1
+                elif status in "dcbs":
+                    status_panel.other_count += 1
+
+                markup_tag = {
+                    "E": "red",  # Error
+                    "A": "white",  # Added regular file (cache miss, slow!)
+                    "M": "white",  # Modified regular file (cache hit, but different, slow!)
+                    "U": "green",  # Updated regular file (cache hit)
+                    "d": "green",  # directory
+                    "c": "green",  # char device
+                    "b": "green",  # block device
+                    "s": "green",  # socket
+                    "-": "white",  # excluded
+                    "+": "green",  # included
+                }.get(status)
+
+        log_widget = self.query_one("#standard-log-content")
+
+        safe_line = escape(line)
+        if markup_tag:
+            safe_line = f"[{markup_tag}]{safe_line}[/]"
+
+        log_widget.write(safe_line)
+
+
+class Starfield(Static):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # Generate a unique seed for this instance to ensure random
+        # distribution per session but stable appearance during resize.
+        self._seed = random.randint(0, 1000000)  # nosec B311 - UI-only randomness, not for crypto
+
+    def on_mount(self) -> None:
+        self.call_after_refresh(self._update_art)
+
+    def on_resize(self, event) -> None:
+        self._update_art()
+
+    def _update_art(self) -> None:
+        """Render starfield."""
+        w, h = self.size
+        # Don't try to render if too small
+        if w < 10 or h < 5:
+            return
+
+        # Use our instance seed to keep stars "static" (same pattern) during resize
+        random.seed(self._seed)
+
+        star_density = 0.1
+        big_star_chance = 0.1
+
+        from .theme import theme
+
+        star_color = f"[{theme.variables['star-color']}]"
+        star_bright_color = f"[{theme.variables['star-bright-color']}]"
+
+        # 1. Create canvas (Starfield)
+        canvas = [[(" ", "")] * w for _ in range(h)]
+        for y in range(h):
+            for x in range(w):
+                if random.random() < star_density:  # nosec B311 - visual effect randomness
+                    if random.random() < big_star_chance:  # nosec B311 - visual effect randomness
+                        char = "*"
+                        color = star_bright_color
+                    else:
+                        char = random.choice([".", "·"])  # nosec B311 - visual effect randomness
+                        color = star_color
+                    canvas[y][x] = (char, color)
+
+        # 2. Render to string
+        c_reset = "[/]"
+        final_lines = []
+        for row in canvas:
+            line_str = ""
+            for char, color in row:
+                if char == " ":
+                    line_str += " "
+                else:
+                    line_str += f"{color}{escape(char)}{c_reset}"
+            final_lines.append(line_str)
+
+        art_str = "\n".join(final_lines)
+        self.update(art_str)
+
+
+class Pulsar(Static):
+    PULSAR_ART = "\n".join([" │ ", "─*─", " │ "])
+    H = 3
+    W = 3
+
+    def on_mount(self) -> None:
+        self.set_interval(4.0, self.pulse)
+        self.update_art()
+
+    def pulse(self) -> None:
+        self.toggle_class("dim")
+
+    def update_art(self) -> None:
+        self.update(self.PULSAR_ART)
+
+
+class Slogan(Static):
+    SLOGAN = "**** You're welcome! ****"
+    H = 1
+    W = len(SLOGAN)
+
+    def on_mount(self) -> None:
+        self.update(self.SLOGAN)
+        self.set_interval(1.0, self.pulse)
+
+    def pulse(self) -> None:
+        self.toggle_class("dim")
+
+    def update_slogan(self):
+        self.update(T(self.SLOGAN))
+
+
+class Logo(Static):
+    BORG_ART = [
+        "██████╗  ██████╗ ██████╗  ██████╗ ",
+        "██╔══██╗██╔═══██╗██╔══██╗██╔════╝ ",
+        "██████╔╝██║   ██║██████╔╝██║  ███╗",
+        "██╔══██╗██║   ██║██╔══██╗██║   ██║",
+        "██████╔╝╚██████╔╝██║  ██║╚██████╔╝",
+        "╚═════╝  ╚═════╝ ╚═╝  ╚═╝ ╚═════╝ ",
+    ]
+    H = len(BORG_ART)
+    W = max(len(line) for line in BORG_ART)
+
+    def on_mount(self) -> None:
+        from .theme import theme
+
+        logo_color = theme.variables["logo-color"]
+
+        lines = []
+        for line in self.BORG_ART:
+            lines.append(f"[bold {logo_color}]{escape(line)}[/]")
+        self.update("\n".join(lines))
+
+
+class LogoPanel(Container):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self._seed = random.randint(0, 1000000)  # nosec B311 - UI-only randomness, not for crypto
+
+    def compose(self) -> ComposeResult:
+        yield Starfield()
+        yield Logo(id="logo")
+        yield Slogan(id="slogan")
+        yield Pulsar()
+
+    def on_resize(self, event) -> None:
+        w, h = self.size
+        # Needs enough space to position reasonably
+        if w > 4 and h > 4:
+            random.seed(self._seed)
+
+            # Exclusion Zone Calculation
+            # --------------------------
+
+            # Logo top-left
+            logo_y = (h - Logo.H) // 2 - 1
+            logo_x = (w - Logo.W) // 2
+
+            # Slogan top-left
+            slogan_y = logo_y + Logo.H + 2
+            slogan_x = (w - Slogan.W) // 2
+
+            # Forbidden area
+            # --------------
+            # Combined rect over Logo and Slogan
+            f_y1 = logo_y
+            f_y2 = slogan_y + Slogan.H
+            f_x1 = min(logo_x, slogan_x)
+            f_x2 = max(logo_x + Logo.W, slogan_x + Slogan.W)
+
+            # Update Logo and Slogan position
+            # Note: In the overlay layer, widgets stack vertically.
+            # Logo is at y=0 (height Logo.H).
+            # Slogan is at y=Logo.H (height Slogan.H).
+            # Pulsar is at y=Logo.H+Slogan.H (height Pulsar.H)
+            # We must subtract these flow positions from the desired absolute positions.
+            self.query_one(Logo).styles.offset = (logo_x, logo_y)
+            self.query_one(Slogan).styles.offset = (slogan_x, slogan_y - Logo.H)
+
+            # Pulsar: styles.offset moves the top-left corner.
+            # So if offset is (px, py), it occupies x=[px, px+Pulsar.W), y=[py, py+Pulsar.H).
+
+            # Find a valid Pulsar position
+            for _ in range(20):
+                # Random position
+                max_x = max(0, w - Pulsar.W)
+                max_y = max(0, h - Pulsar.H)
+
+                px = random.randint(0, max_x)  # nosec B311 - visual placement randomness
+                py = random.randint(0, max_y)  # nosec B311 - visual placement randomness
+
+                # Pulsar Rect:
+                p_x1, p_y1 = px, py
+                p_x2, p_y2 = px + Pulsar.W, py + Pulsar.H
+
+                # Check intersection with forbidden rect
+                overlap_x = (p_x1 < f_x2) and (p_x2 > f_x1)
+                overlap_y = (p_y1 < f_y2) and (p_y2 > f_y1)
+
+                if overlap_x and overlap_y:
+                    continue  # Try again
+
+                # No overlap!
+                offset_x, offset_y = px, py - (Logo.H + Slogan.H)
+                break
+            else:
+                # Fallback if no safe spot found (e.g. screen too small):
+                # Place top-left or keep last valid. random 0,0 is safe-ish.
+                offset_x, offset_y = 0, 0 - (Logo.H + Slogan.H)
+            self.query_one(Pulsar).styles.offset = (offset_x, offset_y)
+
+
+class SpeedSparkline(Static):
+    """
+    Custom 4-line height sparkline.
+    """
+
+    HISTORY_SIZE = 99
+    BLOCKS = [".", " ", "▂", "▃", "▄", "▅", "▆", "▇", "█"]
+
+    def __init__(self, data: list[float] = None, **kwargs):
+        super().__init__(**kwargs)
+        self._data = data or []
+
+    def update_data(self, data: list[float]):
+        self._data = data
+        self.refresh_chart()
+
+    def refresh_chart(self):
+        if not self._data:
+            self.update("")
+            return
+
+        width = self.size.width or self.HISTORY_SIZE
+        # Slice data to width
+        dataset = self._data[-width:]
+        if not dataset:
+            self.update("")
+            return
+
+        max_val = max(dataset) if dataset else 1.0
+        max_val = max(max_val, 1.0)  # Avoid div by zero
+
+        # We have 4 lines, each can take 8 levels. Total 32 levels.
+        # Normalize each data point to 0..32
+
+        lines = [[], [], [], []]
+
+        for val in dataset:
+            # Scale to 0-32
+            scaled = (val / max_val) * 32
+
+            # Generate 4 stacked chars
+            for i in range(4):
+                # i=0 is top line, i=3 is bottom line
+                # Thresholds: Top(24), Mid-High(16), Mid-Low(8), Low(0)
+                threshold = (3 - i) * 8
+                level = int(scaled - threshold)
+                level = max(0, min(8, level))
+                lines[i].append(self.BLOCKS[level])
+
+        # Join lines
+        rows = ["".join(line) for line in lines]
+        self.update("\n".join(rows))
+
+    def on_resize(self, event):
+        self.refresh_chart()