Wire NotificationBus into main and Gradio UI

Create NotificationBus in __main__.py and inject into scheduler and UI.
Gradio subscribes as the "gradio" listener with a 10-second polling
timer that displays notifications in a banner above the chatbot.
ClickUp status shown in the header bar.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cheddahbot/__main__.py

@@ -58,17 +58,26 @@ def main():
     except Exception as e:
         log.warning("Tool system not available: %s", e)
 
+    # Notification bus (UI-agnostic)
+    notification_bus = None
+    try:
+        from .notifications import NotificationBus
+        log.info("Initializing notification bus...")
+        notification_bus = NotificationBus(db)
+    except Exception as e:
+        log.warning("Notification bus not available: %s", e)
+
     # Phase 3+: Scheduler
     try:
         from .scheduler import Scheduler
         log.info("Starting scheduler...")
-        scheduler = Scheduler(config, db, agent)
+        scheduler = Scheduler(config, db, agent, notification_bus=notification_bus)
         scheduler.start()
     except Exception as e:
         log.warning("Scheduler not available: %s", e)
 
     log.info("Launching Gradio UI on %s:%s...", config.host, config.port)
-    app, css = create_ui(agent, config, llm)
+    app, css = create_ui(agent, config, llm, notification_bus=notification_bus)
     app.launch(
         server_name=config.host,
         server_port=config.port,

cheddahbot/ui.py

@@ -13,16 +13,26 @@ if TYPE_CHECKING:
     from .agent import Agent
     from .config import Config
     from .llm import LLMAdapter
+    from .notifications import NotificationBus
 
 log = logging.getLogger(__name__)
 
 _CSS = """
 .contain { max-width: 900px; margin: auto; }
 footer { display: none !important; }
+.notification-banner {
+    background: #1a1a2e;
+    border: 1px solid #16213e;
+    border-radius: 8px;
+    padding: 10px 16px;
+    margin-bottom: 8px;
+    font-size: 0.9em;
+}
 """
 
 
-def create_ui(agent: Agent, config: Config, llm: LLMAdapter) -> gr.Blocks:
+def create_ui(agent: Agent, config: Config, llm: LLMAdapter,
+              notification_bus: NotificationBus | None = None) -> gr.Blocks:
     """Build and return the Gradio app."""
 
     available_models = llm.list_chat_models()
@@ -30,15 +40,24 @@ def create_ui(agent: Agent, config: Config, llm: LLMAdapter) -> gr.Blocks:
     current_model = llm.current_model
 
     exec_status = "available" if llm.is_execution_brain_available() else "unavailable"
+    clickup_status = "enabled" if config.clickup.enabled else "disabled"
 
     with gr.Blocks(title="CheddahBot") as app:
         gr.Markdown("# CheddahBot", elem_classes=["contain"])
         gr.Markdown(
             f"*Chat Brain:* `{current_model}`  |  "
-            f"*Execution Brain (Claude Code CLI):* `{exec_status}`",
+            f"*Execution Brain (Claude Code CLI):* `{exec_status}`  |  "
+            f"*ClickUp:* `{clickup_status}`",
             elem_classes=["contain"],
         )
 
+        # -- Notification banner --
+        notification_display = gr.Markdown(
+            value="",
+            visible=False,
+            elem_classes=["contain", "notification-banner"],
+        )
+
         with gr.Row(elem_classes=["contain"]):
             model_dropdown = gr.Dropdown(
                 choices=model_choices,
@@ -191,6 +210,22 @@ def create_ui(agent: Agent, config: Config, llm: LLMAdapter) -> gr.Blocks:
             except Exception as e:
                 return None, f"Voice chat error: {e}"
 
+        def poll_notifications():
+            """Poll the notification bus for pending messages."""
+            if not notification_bus:
+                return gr.update(value="", visible=False)
+
+            messages = notification_bus.get_pending("gradio")
+            if not messages:
+                return gr.update()  # No change
+
+            # Format notifications as markdown
+            lines = []
+            for msg in messages[-5:]:  # Show last 5 notifications max
+                lines.append(f"**Notification:** {msg}")
+            banner = "\n\n".join(lines)
+            return gr.update(value=banner, visible=True)
+
         # -- Wire events --
 
         model_dropdown.change(on_model_change, [model_dropdown], None)
@@ -209,6 +244,12 @@ def create_ui(agent: Agent, config: Config, llm: LLMAdapter) -> gr.Blocks:
             [voice_output, voice_status],
         )
 
+        # Notification polling timer (every 10 seconds)
+        if notification_bus:
+            notification_bus.subscribe("gradio", lambda msg, cat: None)  # Register listener
+            timer = gr.Timer(10)
+            timer.tick(poll_notifications, None, [notification_display])
+
         # Load conversation list on app start
         app.load(_load_conversations, None, [conv_list])