refactor(routes): rename /agents and /agent-setup to /scouts and /scout-setup

Rename routes/agents.py → routes/scouts.py and routes/agent_setup.py →
routes/scout_setup.py. Update APIRouter prefix/tags in scouts.py to
/scouts and scouts. Update main.py router registration, device_ws.py
import, and test_journey_v2.py import/patch paths to use scout_setup.

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

app/api/routes/device_ws.py

@@ -39,7 +39,7 @@ from fastapi import APIRouter, WebSocket, WebSocketDisconnect
 from jose import JWTError, jwt
 from sqlalchemy import update
 
-from app.api.routes.agent_setup import handle_journey_message, handle_journey_start
+from app.api.routes.scout_setup import handle_journey_message, handle_journey_start
 from app.config.settings import settings
 from app.core.agent_runner import trigger_pending_runs
 from app.core.agent_session_buffer import session_buffer

app/api/routes/scouts.py

@@ -1,12 +1,12 @@
-"""Agent routes.
+"""Scout routes.
 
 Backend responsibilities are intentionally minimal:
-    GET  /agents/catalog         — static catalog for UI display
-    POST /agents/can-create      — billing eligibility check
-    POST /agents/trigger         — trigger a local agent run
+    GET  /scouts/catalog         — static catalog for UI display
+    POST /scouts/can-create      — billing eligibility check
+    POST /scouts/trigger         — trigger a local scout run
 
-Agent configuration is owned by the Electron app and is not persisted
-in backend agent-config tables.
+Scout configuration is owned by the Electron app and is not persisted
+in backend scout-config tables.
 """
 
 from __future__ import annotations
@@ -40,7 +40,7 @@ from app.schemas import (
 
 logger = logging.getLogger(__name__)
 
-router = APIRouter(prefix="/agents", tags=["agents"])
+router = APIRouter(prefix="/scouts", tags=["scouts"])
 
 
 # ── Datetime helpers ──────────────────────────────────────────────────

app/main.py

@@ -124,12 +124,12 @@ def create_app() -> FastAPI:
     app.add_middleware(SanitizerMiddleware)
     app.add_middleware(TierRateLimitMiddleware)
 
-    from app.api.routes import agents, auth, billing, chat, device_ws, memory
+    from app.api.routes import scouts, auth, billing, chat, device_ws, memory
 
     app.include_router(auth.router,       prefix="/api/v1")
     app.include_router(chat.router,       prefix="/api/v1")
     app.include_router(billing.router,    prefix="/api/v1")
-    app.include_router(agents.router,     prefix="/api/v1")
+    app.include_router(scouts.router,     prefix="/api/v1")
     app.include_router(device_ws.router,  prefix="/api/v1")
     app.include_router(memory.router,     prefix="/api/v1")