refactor(backend)!: separate algorithm and data layers

Reorganize algorithm packages by business responsibility, move orchestration into services, and keep database access behind pooled repositories.

Harden analysis API validation, remove unsafe legacy simulation endpoints, and add regression and architecture boundary coverage.

BREAKING CHANGE: legacy algorithm module paths and obsolete simulation endpoints are removed.

app/infra/db/timescaledb/repositories/analysis.py

@@ -4,7 +4,7 @@ from uuid import UUID
 
 from psycopg import AsyncConnection, Connection, sql
 
-from app.services.time_api import parse_utc_time
+from app.domain.time import parse_utc_time
 
 
 class AnalysisResultsRepository:

app/infra/db/timescaledb/repositories/realtime.py

@@ -2,7 +2,7 @@ from typing import List, Any, Dict
 from datetime import datetime, timedelta
 from collections import defaultdict
 from psycopg import AsyncConnection, Connection, sql
-from app.services.time_api import parse_utc_time
+from app.domain.time import parse_utc_time
 
 
 class RealtimeRepository: