chore(core): stage 1 contracts — dialog, API schemas + fixtures, integrations, monitoring, modules

Freeze interfaces between lanes A (bot), B (backend), C (dashboard) so three developers work in
parallel without touching each other's files: dialog Event/Reply + engine registry with echo stub,
integration protocols with in-memory defaults, MonitoringService with noop stub, /api/v1 schemas
with fixture-backed routes, frozen main.py wiring, config/modules.yaml + due_scales(), DAR-5,
tzdata, Andrey trajectory, lanes in WORKFLOW, ADR-010.

Refs #34

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/main.py

@@ -1,4 +1,4 @@
-"""Application entrypoint: FastAPI API (+ scheduler and Telegram bot once implemented)."""
+"""Application entrypoint: FastAPI API + scheduler + Telegram bot (frozen wiring, #34)."""
 
 import logging
 from collections.abc import AsyncGenerator
@@ -7,9 +7,12 @@ from contextlib import asynccontextmanager
 from fastapi import FastAPI
 from sqlalchemy.exc import SQLAlchemyError
 
+from app.api.routes import router
+from app.channels import telegram
 from app.config import get_settings
 from app.db.bootstrap import init_db
 from app.db.session import dispose
+from app.scheduler import jobs as scheduler
 
 # Logs carry only tokens, states and event codes — never PII or raw message text.
 logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(name)s %(message)s")
@@ -27,12 +30,17 @@ async def lifespan(_: FastAPI) -> AsyncGenerator[None, None]:
         # In compose Postgres is required and healthy before the app starts; this branch is for running the
         # API (and its tests) without a database. Endpoints touching the DB will fail until it is reachable.
         log.error("db init failed, continuing without db: %s", type(exc).__name__)
-    # Scheduler (#13) and Telegram bot (#11) hook in here.
+    # Lanes fill these in (#13, #11); main.py itself stays frozen (#34).
+    await scheduler.start()
+    await telegram.start()
     yield
+    await telegram.stop()
+    await scheduler.stop()
     await dispose()
 
 
 app = FastAPI(title="PTSRaiAgent API", version="0.1.0", lifespan=lifespan)
+app.include_router(router)
 
 
 @app.get("/health")