feat: component wiring integration — orphan cleanup, Memory page, WS handlers

Memory page: Added REST endpoints (routes/memory.ts, 3 GETs: list/daily/dreams),
React route in App.tsx, nav link in ProjectSidebar (Brain icon).

Orphan components wired: KeyboardShortcutsDialog (? key in AppShell),
McpResponseDisplay (MCP tool results in ToolCallLine), CacheShapeBadge
(StatsLine in MessageBubble). MessageBoundary + MessageListErrorBoundary
confirmed already wired in MarkdownRenderer/MessageList.

Dead code cleanup: useDraftPersistence integrated into ChatInput
(localStorage draft save/restore/clear on send). message-parts barrel
made canonical — MessageBubble imports from it; StatsLine updated with
CacheShapeBadge parity. api.settings.inference typed wrapper added;
InferenceSettings raw fetch replaced.

WS frame handlers: reasoning_delta (accumulates like delta), tool_trace_start,
tool_trace_finish, collision_warning, agent_message acknowledged in
useSessionStream. CollisionWarningEvent + AgentMessageEvent added to
sessionEvents union. Forwarding in useCoderUserEvents. reasoning_delta
+ collision_warning added to web WsFrame type. useSidebar default case
fixes pre-existing fallthrough error.

Workflow engine: services/workflow/index.ts documented as experimental;
coder flow-runner (apps/coder/src/services/flow-runner.ts) is canonical.

Verification: web type-check clean, server build clean, 627 tests pass.

apps/web/src/hooks/sessionEvents.ts

@@ -279,6 +279,23 @@ export interface BattleUpdatedEvent {
   cross_exam_id?: string;
 }
 
+// Collision warning: published when the BooCoder detects multiple agents
+// editing the same file concurrently. Advisory only — writes are not blocked.
+export interface CollisionWarningEvent {
+  type: 'collision_warning';
+  file_path: string;
+  agents: string[];
+}
+
+// Inter-agent message: one agent step sends a live message to another step
+// in the same flow run.
+export interface AgentMessageEvent {
+  type: 'agent_message';
+  from_agent: string;
+  to_agent: string;
+  content: string;
+}
+
 // Re-export arena API shapes for consumers that need the full battle data.
 export type { BattleShape, ContestantShape, CrossExaminationShape };
 
@@ -318,7 +335,9 @@ export type SessionEvent =
   | OpenArenaPaneEvent
   | BattleStartedEvent
   | ContestantUpdatedEvent
-  | BattleUpdatedEvent;
+  | BattleUpdatedEvent
+  | CollisionWarningEvent
+  | AgentMessageEvent;
 type Listener = (event: SessionEvent) => void;
 
 const listeners = new Set<Listener>();

apps/web/src/hooks/useCoderUserEvents.ts

@@ -9,8 +9,10 @@ import { useEffect } from 'react';
 import { WsFrameSchema } from '@boocode/contracts/ws-frames';
 import { sessionEvents } from './sessionEvents';
 import type {
+  AgentMessageEvent,
   BattleStartedEvent,
   BattleUpdatedEvent,
+  CollisionWarningEvent,
   ContestantUpdatedEvent,
   FlowRunStartedEvent,
   FlowRunStepUpdatedEvent,
@@ -61,6 +63,19 @@ export function useCoderUserEvents(): void {
           sessionEvents.emit(frame as unknown as ContestantUpdatedEvent);
         } else if (frame.type === 'battle_updated') {
           sessionEvents.emit(frame as unknown as BattleUpdatedEvent);
+        } else if (frame.type === 'agent_message') {
+          sessionEvents.emit({
+            type: 'agent_message',
+            from_agent: frame.sender_step_id,
+            to_agent: frame.channel ?? '',
+            content: frame.content,
+          } as AgentMessageEvent);
+        } else if (frame.type === 'collision_warning') {
+          sessionEvents.emit({
+            type: 'collision_warning',
+            file_path: frame.file_path,
+            agents: frame.agents,
+          } as CollisionWarningEvent);
         }
       };
 

apps/web/src/hooks/useSessionStream.ts

@@ -324,6 +324,23 @@ function applyFrame(state: State, frame: WsFrame): State {
     case 'channel_delta': {
       return state;
     }
+    case 'reasoning_delta': {
+      const next = state.messages.map((m) => {
+        if (m.id !== frame.message_id) return m;
+        const chunk = frame.content ?? '';
+        return { ...m, reasoning_text: (m.reasoning_text ?? '') + chunk };
+      });
+      return { ...state, messages: next };
+    }
+    case 'tool_trace_start':
+    case 'tool_trace_finish':
+    case 'collision_warning':
+    case 'agent_message': {
+      if (typeof console !== 'undefined') {
+        console.debug(`ws-frame (acknowledged): ${frame.type}`, frame);
+      }
+      return state;
+    }
     default: {
       return state;
     }

apps/web/src/hooks/useSidebar.ts

@@ -202,6 +202,10 @@ function applyEvent(prev: SidebarResponse, event: import('./sessionEvents').Sess
     case 'battle_updated':
       // Consumed by useWorkspacePanes / ArenaPane / ArenaLauncherDialog; sidebar has no stake.
       return prev;
+    case 'collision_warning':
+    case 'agent_message':
+      // Published by BooCoder on the coder user channel; sidebar has no stake.
+      return prev;
     case 'project_archived': {
       const next = prev.projects.filter((p) => p.id !== event.project_id);
       if (next.length === prev.projects.length) return prev;
@@ -229,6 +233,8 @@ function applyEvent(prev: SidebarResponse, event: import('./sessionEvents').Sess
       });
       return changed ? { ...prev, projects } : prev;
     }
+    default:
+      return prev;
   }
 }