revert: remove all retro demoscene TUI features

Removes CRT shader, plasma canvas, tracker view, oscilloscope,
BBS boot sequence, retro themes, and their integration into
app.py and dashboard.py.

Reverts PRs #277, #278, #279, #281, #284, #290, #291.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: chernistry

src/bernstein/cli/advanced_cmd.py

@@ -78,16 +78,6 @@ def live(interval: float, classic: bool, no_splash: bool) -> None:
 
             render_startup_splash(console, config=visual_cfg, **_build_live_splash_context(seed_path, seed_cfg))
 
-        if not no_splash:
-            import asyncio as _asyncio
-
-            from rich.console import Console as _BootConsole
-
-            from bernstein.tui.boot_sequence import play_boot_sequence
-
-            _boot_console = _BootConsole()
-            _asyncio.run(play_boot_sequence(_boot_console, no_splash=False, project_dir=Path(".")))
-
         from bernstein.cli.dashboard import BernsteinApp as DashboardApp
 
         app = DashboardApp()

src/bernstein/cli/dashboard.py

@@ -39,10 +39,6 @@
 
 from bernstein.cli.icons import get_agent_icon, get_icons, get_status_icon
 from bernstein.cli.visual_theme import PALETTE, budget_color, model_color, role_color, sample_gradient, status_color
-from bernstein.tui.crt_shader import CRTMode, CRTShader
-from bernstein.tui.oscilloscope import OscilloscopeWidget
-from bernstein.tui.plasma import PlasmaCanvas
-from bernstein.tui.tracker_view import TrackerView
 
 logger = logging.getLogger(__name__)
 
@@ -1371,23 +1367,6 @@ class BernsteinApp(App[None]):
         overflow-y: auto;
         border-right: heavy $border;
     }
-
-    #retro-bar {
-        height: auto;
-        max-height: 20;
-    }
-
-    #plasma-canvas {
-        height: 12;
-    }
-
-    #tracker-view {
-        height: 16;
-    }
-
-    #oscilloscope {
-        height: 16;
-    }
     """
 
     #: Resize debounce delay in seconds (TUI-001).
@@ -1406,10 +1385,6 @@ class BernsteinApp(App[None]):
         Binding("d", "compare_task", "Diff"),
         Binding("v", "compare_task", "Diff", show=False),
         Binding("i", "inspect_task", "Open", show=False),
-        Binding("C", "toggle_crt", "CRT"),
-        Binding("P", "toggle_plasma", "Plasma"),
-        Binding("T", "toggle_tracker", "Tracker"),
-        Binding("O", "toggle_scope", "Scope"),
     ]
 
     def __init__(self, **kw: Any) -> None:
@@ -1428,7 +1403,6 @@ def __init__(self, **kw: Any) -> None:
         self._last_activity: list[str] = []
         self._compare_mark: str | None = None  # first task ID for compare
         self._resize_timer: object | None = None  # debounce timer handle (TUI-001)
-        self._crt_shader = CRTShader(CRTMode.OFF)
 
     def compose(self) -> ComposeResult:
         yield DashboardHeader(id="header-bar")
@@ -1442,10 +1416,6 @@ def compose(self) -> ComposeResult:
         with Vertical(id="activity-bar"):
             yield Static("ACTIVITY", classes="col-header")
             yield RichLog(id="activity-log", wrap=True, markup=True, auto_scroll=True)
-        with Vertical(id="retro-bar"):
-            yield PlasmaCanvas(id="plasma-canvas")
-            yield TrackerView(id="tracker-view")
-            yield OscilloscopeWidget(id="oscilloscope")
         with Horizontal(id="expert-row"):
             yield ExpertCostPanel(id="expert-cost")
             yield ExpertBanditPanel(id="expert-bandit")
@@ -1507,9 +1477,6 @@ def on_mount(self) -> None:
             except Exception as exc:
                 logger.warning("Failed to read evolve.json: %s", exc)
 
-        # Retro-demoscene widgets hidden by default (toggled via keybindings)
-        self.query_one("#retro-bar").display = False
-
         # Write startup messages to activity log
         log = self.query_one("#activity-log", RichLog)
         log.write(_format_activity_line("system", "Bernstein starting..."))
@@ -1562,7 +1529,6 @@ def _check_agents_file(self) -> None:
                         costs: dict[str, Any] = {}
                         self._update_agents(agents, costs)
                         self._update_activity(agents)
-                        self._update_retro_widgets(agents)
             except Exception:
                 pass
 
@@ -1678,7 +1644,6 @@ def _apply_data(self, data: dict[str, Any]) -> None:
         }
         self._update_stats(data.get("status"), tasks, data.get("agents", []), costs, monitoring)
         self._update_activity(data.get("agents", []))
-        self._update_retro_widgets(data.get("agents", []))
 
     # -- Agents --
 
@@ -1786,7 +1751,7 @@ def _get_boot_log(self) -> str:
                     # Truncate module prefix for readability.
                     if ": " in msg:
                         msg = msg.split(": ", 1)[1]
-                    msg = msg[:80].replace("[", r"\[")
+                    msg = msg[:80]
                     # Color by level.
                     if level == "ERROR":
                         lines.append(f"[red]{time_part}[/] [bold red]ERR[/]  {msg}")
@@ -2258,66 +2223,6 @@ def action_toggle_expert(self) -> None:
         else:
             self.notify("Novice mode  [e] to toggle on", severity="information", timeout=3)
 
-    def action_toggle_crt(self) -> None:
-        """Cycle CRT phosphor shader mode."""
-        mode = self._crt_shader.cycle_mode()
-        self.notify(f"CRT: {mode.value}", timeout=2)
-
-    def action_toggle_plasma(self) -> None:
-        """Show/hide the demoscene plasma canvas."""
-        retro = self.query_one("#retro-bar")
-        plasma = self.query_one("#plasma-canvas", PlasmaCanvas)
-        plasma.display = not plasma.display
-        # Show retro bar if any retro widget is visible
-        retro.display = (
-            plasma.display
-            or self.query_one("#tracker-view", TrackerView).display
-            or self.query_one("#oscilloscope", OscilloscopeWidget).display
-        )
-
-    def action_toggle_tracker(self) -> None:
-        """Show/hide the tracker-style task monitor."""
-        retro = self.query_one("#retro-bar")
-        tracker = self.query_one("#tracker-view", TrackerView)
-        tracker.display = not tracker.display
-        retro.display = (
-            self.query_one("#plasma-canvas", PlasmaCanvas).display
-            or tracker.display
-            or self.query_one("#oscilloscope", OscilloscopeWidget).display
-        )
-
-    def action_toggle_scope(self) -> None:
-        """Show/hide the braille oscilloscope."""
-        retro = self.query_one("#retro-bar")
-        scope = self.query_one("#oscilloscope", OscilloscopeWidget)
-        scope.display = not scope.display
-        retro.display = (
-            self.query_one("#plasma-canvas", PlasmaCanvas).display
-            or self.query_one("#tracker-view", TrackerView).display
-            or scope.display
-        )
-
-    def _update_retro_widgets(self, agents: list[dict[str, Any]]) -> None:
-        """Feed agent data to retro-demoscene widgets."""
-        plasma = self.query_one("#plasma-canvas", PlasmaCanvas)
-        if plasma.display:
-            plasma.update_activity(len(agents))
-
-        tracker = self.query_one("#tracker-view", TrackerView)
-        if tracker.display:
-            tracker.update_agents(agents)
-
-        scope = self.query_one("#oscilloscope", OscilloscopeWidget)
-        if scope.display:
-            scope.update_agents(agents)
-            samples: dict[str, float] = {}
-            for a in agents:
-                sid = a.get("session_id", a.get("id", ""))
-                if sid:
-                    samples[sid] = a.get("tokens_per_sec", 0.0)
-            if samples:
-                scope.add_samples(samples)
-
     def action_stop_bernstein(self) -> None:
         """Backward-compatible stop -- delegates to drain."""
         self.action_graceful_quit()

src/bernstein/tui/app.py

@@ -13,11 +13,7 @@
 from textual.binding import Binding, BindingType
 from textual.containers import Vertical
 
-from bernstein.tui.crt_shader import CRTMode, CRTShader
-from bernstein.tui.oscilloscope import OscilloscopeWidget
-from bernstein.tui.plasma import PlasmaCanvas
 from bernstein.tui.timeline import TaskTimeline, TimelineEntry
-from bernstein.tui.tracker_view import TrackerView
 from bernstein.tui.widgets import (
     ActionBar,
     AgentLogWidget,
@@ -129,10 +125,6 @@ class BernsteinApp(App[None]):
         Binding("w", "toggle_coordinator", "Coordinator", show=True),
         Binding("a", "toggle_approvals", "Approvals", show=True),
         Binding("l", "toggle_tool_observer", "Tool calls", show=True),
-        Binding("C", "toggle_crt", "CRT", show=True),
-        Binding("P", "toggle_plasma", "Plasma", show=True),
-        Binding("T", "toggle_tracker", "Tracker", show=True),
-        Binding("O", "toggle_oscilloscope", "Scope", show=True),
         Binding("/", "scratchpad_filter", "Filter scratchpad", show=False),
         Binding("escape", "close_action_bar", "Close", show=False),
         Binding("up", "cursor_up", "Up", show=False),
@@ -153,7 +145,6 @@ def __init__(self, poll_interval: float = _POLL_INTERVAL) -> None:
         self._action_bar_visible = False
         self._current_rows: list[TaskRow] = []
         self._log_offsets: dict[str, int] = {}  # session_id → last-read byte offset
-        self._crt_shader = CRTShader(CRTMode.OFF)
 
     # -- layout ---------------------------------------------------------------
 
@@ -168,9 +159,6 @@ def compose(self) -> ComposeResult:
             yield CoordinatorDashboard(id="coordinator-dashboard")
             yield ApprovalPanel(id="approval-panel")
             yield ToolObserverWidget(id="tool-observer")
-            yield PlasmaCanvas(id="plasma-canvas")
-            yield TrackerView(id="tracker-view")
-            yield OscilloscopeWidget(id="oscilloscope")
             yield ActionBar(id="action-bar")
             yield AgentLogWidget(id="agent-log")
         yield ShortcutsFooter(id="shortcuts-footer")
@@ -185,9 +173,6 @@ def on_mount(self) -> None:
         self.query_one("#coordinator-dashboard", CoordinatorDashboard).display = False
         self.query_one(_APPROVAL_PANEL_SELECTOR, ApprovalPanel).display = False
         self.query_one("#tool-observer", ToolObserverWidget).display = False
-        self.query_one("#plasma-canvas", PlasmaCanvas).display = False
-        self.query_one("#tracker-view", TrackerView).display = False
-        self.query_one("#oscilloscope", OscilloscopeWidget).display = False
 
         self._load_historical_logs()
         self.set_interval(self._poll_interval, self.action_refresh)
@@ -269,30 +254,6 @@ def action_refresh(self) -> None:
         if self.query_one("#task-timeline", TaskTimeline).display:
             self.run_worker(self._refresh_timeline())
 
-        # Retro widget data flow
-        agents_data: list[Any] = data.get("agents", [])
-
-        plasma = self.query_one("#plasma-canvas", PlasmaCanvas)
-        if plasma.display:
-            plasma.update_activity(len(agents_data))
-
-        tracker = self.query_one("#tracker-view", TrackerView)
-        if tracker.display:
-            tracker.update_agents(agents_data)
-
-        scope = self.query_one("#oscilloscope", OscilloscopeWidget)
-        if scope.display:
-            scope.update_agents(agents_data)
-            samples: dict[str, float] = {}
-            for a in agents_data:
-                if isinstance(a, dict):
-                    agent = cast("dict[str, Any]", a)
-                    sid = agent.get("session_id", "")
-                    if sid:
-                        samples[str(sid)] = float(agent.get("tokens_per_sec", 0.0))
-            if samples:
-                scope.add_samples(samples)
-
     def action_toggle_timeline(self) -> None:
         """Show/hide the task execution timeline."""
         timeline = self.query_one("#task-timeline", TaskTimeline)
@@ -436,26 +397,6 @@ def _refresh_coordinator_dashboard(self) -> None:
         rows.sort(key=lambda row: {"coordinator": 0, "worker": 1}.get(classify_role(row.role), 2))
         self.query_one("#coordinator-dashboard", CoordinatorDashboard).refresh_data(rows)
 
-    def action_toggle_crt(self) -> None:
-        """Cycle CRT phosphor shader mode."""
-        mode = self._crt_shader.cycle_mode()
-        self.notify(f"CRT: {mode.value}", timeout=2)
-
-    def action_toggle_plasma(self) -> None:
-        """Show/hide the demoscene plasma canvas."""
-        plasma = self.query_one("#plasma-canvas", PlasmaCanvas)
-        plasma.display = not plasma.display
-
-    def action_toggle_tracker(self) -> None:
-        """Show/hide the tracker-style task monitor."""
-        tracker = self.query_one("#tracker-view", TrackerView)
-        tracker.display = not tracker.display
-
-    def action_toggle_oscilloscope(self) -> None:
-        """Show/hide the braille oscilloscope."""
-        scope = self.query_one("#oscilloscope", OscilloscopeWidget)
-        scope.display = not scope.display
-
     def action_toggle_action_bar(self) -> None:
         """Toggle the action bar for the selected task."""
         action_bar = self.query_one(ActionBar)